Cat Electric Rope Shovel 295HD Mining Shovel Operator'S Manual - PDF DOWNLOAD

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BUCYRUS

295HD Ml~ING StiOVIIL 0PrERA1rOR'S MANILJAIL SN:141343 SN:141344 SN:141345

Manual No.

"10720

Bucyrus International, Inc. 1100 Milwaukee Ave.• P.O.Box 500 • South Milwaukee, Wisconsin 53172-0500 USA

BI624060

BUCYRUS INTERNATIONAL, Inc. 295HD Electric Mining Shovel

Manual No. 10720

Aug 2009

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BUCYRUS INTERNATIONAL, Inc. 295HD Electric Mining Shovel

DANGER: THIS MANUAL PROVIDES INFORMATION AND DATA FOR THE MAINTENANCE AND OPERATION OF THIS MACHINE. ALL ELECTRICAL EQUIPMENT MUST BE SERVICED BY QUALIFIED INDIVIDUALS WHO HAVE BEEN PROPERLY TRAINED TO WORK WITH HIGH VOLTAGE SYSTEMS, VARIABLE FREQUENCY AC DRIVES, AND/ OR WARD LEONARD LOOP DC DRIVES. FAILURE TO COMPLY COULD RESULT IN PERSONAL INJURY OR DEATH.

DANGER: DO NOT ATTEMPT MECHANICAL OR ELECTRICAL MAINTENANCE ON THIS MACHINE WITHOUT A FULL UNDERSTANDING OF EACH COMPONENT’S OPERATION AND FUNCTION. COMPONENTS UTILIZING ELECTRICAL POWER, AIR PRESSURE, HYDRAULIC PRESSURE AND COMPRESSION OR TENSION SPRINGS FOR OPERATION MUST BE DEACTIVATED AND ISOLATED PRIOR TO DISASSEMBLY. The FEEDER CABLE must contain a provision for a ground connection, especially whenever 2,300 volts or greater are used. At the substation, the power line must terminate (see paragraph on ground circuits) to a suitable permanent ground. At the machine, the power line must securely terminate through a bolted connection to the machine frame. This provides a constant ground for the machine and its electrical equipment. Failure to provide this adequate ground endangers employees and equipment.

THE NEED FOR A POWER LINE GROUNDING CIRCUIT ADEQUATE FOR THE MACHINE CANNOT BE OVEREMPHASIZED. Without a good grounding system, high voltages exist between the machine and the ground. The portable trail cable and power lines supplying electric energy to the machine must have a ground wire, ample in capacity, running parallel to the main wires over the entire distance from the transformer to the machine. A suitable grounding system must be used at the transformer. Consult your local electrical supplier for details.

DANGER: DUE TO THE INHERENT DANGERS IN THE OPERATION OF HIGH VOLTAGE ELECTRICAL EQUIPMENT, A SAFE GROUNDING SYSTEM IS REQUIRED THAT INCLUDES GROUND CONDUCTORS IN THE CABLE, A NEUTRAL GROUNDING RESISTOR, AND RELATED RELAYS AND SWITCHGEAR. A GROUND CONTINUITY CHECK SYSTEM IS ALSO RECOMMENDED.

Aug 2009

Manual No. 10720

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BUCYRUS INTERNATIONAL, Inc. 295HD Electric Mining Shovel

Manual No. 10720

Aug 2009

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SECTION 2 OPERATION Table of Contents GENERAL INFORMATION ............................................................................................................ 5 OPERATION NEAR ELECTRICAL LINES ................................................................................ 5 OPERATOR’S CONTROLS .......................................................................................................... 7 Operator’s Cab ................................................................................................................. 7

PRIMARY OPERATING CONTROLS ...................................................................................... 8 Operator’s Control Consoles in the Cab .......................................................................... 8

CONTROLS ON THE LEFT CONSOLE ............................................................................ 9 LEFT JOYSTICK ......................................................................................................... 9 DIPPER TRIP .............................................................................................................. 9 SIGNAL HORN ............................................................................................................. 9 RADIO .......................................................................................................................... 9 HOIST BRAKE ........................................................................................................... 10 CROWD BRAKE ........................................................................................................ 10 SWING BRAKE .......................................................................................................... 10 PROPEL BRAKE........................................................................................................ 10 Left Control Console ....................................................................................................... 10

CLIMATE CONTROL PANEL ..................................................................................... 10 WINDSHIELD WIPER SWITCH ................................................................................. 10 WINDSHIELD WASHER SWITCH .............................................................................. 10 CONTROLS ON THE RIGHT CONSOLE ........................................................................ 11 RIGHT JOYSTICK ..................................................................................................... 11 CONTROL STOP PUSHBUTTON ............................................................................. 12 CONTROL RESET PUSHBUTTON .......................................................................... 12 Right Control Console .................................................................................................... 12

DIG/PROPEL TRANSFER SWITCH ................................................................................ 13 EMERGENCY STOP PUSHBUTTON ....................................................................... 13 MAIN POWER OFF PUSHBUTTON .......................................................................... 13 EARTH CONTINUITY LOCKOUT PUSHBUTTON .................................................... 14 TELEPHONE ............................................................................................................. 14 OPERATOR’S SEAT ................................................................................................................... 14 Operator’s Seat - Front View .......................................................................................... 14

WINDSHIELD WIPERS .......................................................................................................... 17 WINDSHIELD WASHER ........................................................................................................ 17 PRE-START CHECKS ................................................................................................................ 18 WALKAROUND GROUND LEVEL INSPECTION ................................................................... 18 ON-BOARD INSPECTION ..................................................................................................... 19 MACHINE START-UP, OPERATION AND SHUTDOWN .............................................................. 20 START-UP ............................................................................................................................. 20 Start-Up Control Locations ............................................................................................. 20

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RESTARTING AFTER AN ELECTRICAL FAULT.................................................................... 22 OPERATION .......................................................................................................................... 23 STOPPING THE MACHINE ................................................................................................... 23 MACHINE SHUTDOWN ........................................................................................................ 24 MACHINERY MOTIONS ........................................................................................................ 25 HOIST MOTION .............................................................................................................. 25 CROWD MOTION ........................................................................................................... 26 PROPEL MOTION ........................................................................................................... 27 Propel - Straight Forward/Reverse ................................................................................. 27

SWING MOTION ............................................................................................................. 28 PROPER SWING MOTION ............................................................................................. 29 STEERING WHILE IN PROPEL MODE ........................................................................... 30 COUNTER-ROTATION TURNS ...................................................................................... 32 POSITIONING THE MACHINE .................................................................................................... 33 BACK-UP METHOD .............................................................................................................. 33 DRIVE-BY METHOD ............................................................................................................. 34 START OF THE DIG CYCLE ........................................................................................... 35 Force the Dipper Lip into the Bank ................................................................................. 35 Variations on Dipper Penetration .................................................................................... 36 Dig with the Dipper Beneath the Boom Point .................................................................. 37

ENGAGING THE BANK ................................................................................................... 37 SLOPE LIMITATIONS ...................................................................................................... 39 Slope vs. Degrees .......................................................................................................... 39 Rollover and Operation Limits ........................................................................................ 39

EXCAVATED MATERIAL ........................................................................................................ 39 OPERATION CHECKS .......................................................................................................... 40 OPERATING HINTS .............................................................................................................. 41 STOPPING THE MACHINE ................................................................................................... 42 MACHINE SHUTDOWN ........................................................................................................ 42 SPECIFICATIONS ....................................................................................................................... 43 APPROXIMATE COMPONENT WEIGHTS .................................................................................. 45

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SECTION 2 OPERATION

GENERAL INFORMATION This section of the manual will assist in the operation of this machine. It provides the operator with the location and explanation of the controls, instructions for machine operation and certain maneuvering techniques. Throughout this section and the remainder of the manual, the use of the terms “LEFT, RIGHT, FRONT and REAR” refer to machine locations as viewed by the operator sitting in the operator’s seat in the cab.

Safe operation of the machine minimizes production delays and costly damage to equipment. Carefully study and follow all recommended procedures in this manual. Safety guidelines are intended to prevent accidents from occurring and are provided in the interest of all mine personnel. Overall safety depends upon the use of good judgment and the alertness of the entire mining crew. Refer to Section 1 of this manual for specific safety precautions.

OPERATION NEAR ELECTRICAL LINES DANGER:

HIGH VOLTAGE! The following precautions shall be complied with whenever operating around or near electrical distribution and transmission lines.

Working in the vicinity of electrical power lines presents a very serious hazard and special precautions must be taken. For purposes of this manual we are considering the entire machine or its load, in any position, that can reach to within the minimum distance specified by local, state and federal regulations.

Safe operating practices require that you maintain the maximum possible distance from the lines and never violate the minimum clearances.

Before working in the vicinity of power lines, always take the following precautions: •

Always contact the owners of the power lines or the nearest electric utility before beginning work.

•

You and the electrical utility representative must jointly determine what specific precautions must be taken to ensure safety.

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•

It is the responsibility of the user and the electric utility to see that necessary precautions are taken.

•

Consider all lines to be power lines and treat all power lines as energized even though it is known that the power is shut off and the line is visibly grounded.

•

Slow down the operating cycle. Reaction time may be too slow and distances may be misjudged.

•

Caution all ground personnel to stand clear of the machine at all times.

•

Use a signal person to guide the machine into close quarters. The sole responsibility of the signal person is to observe the approach of the machine to the power line. The signal person must be in direct communication with the operator and the operator must pay close attention to the signals.

DANGER:

HIGH VOLTAGE! Death or injury could result should any part of the machine come within the minimum distance of an energized power line specified by local, state and federal regulations.

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OPERATOR’S CONTROLS The operator must become familiar with the machine and its operating controls before operating the machine.

The operating controls will be grouped as primary and secondary controls, depending upon their location. The primary controls are the controls located in the operator’s cab and the secondary controls are the controls located in the machinery house.

Operator’s Cab

The descriptions listed should familiarize the operator with each control’s location and functional use. The terms left, right, forward and reverse indicate directions with the operator seated in the cab, facing forward, with the boom extending over the take-up axle of the crawlers.

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PRIMARY OPERATING CONTROLS

Operator’s Control Consoles in the Cab

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CONTROLS ON THE LEFT CONSOLE LEFT JOYSTICK The Left Joystick controls the crowd/horn/dipper trip and propel. It is the vertical handle mounted on the left console of the operator’s seat. This joystick will spring return to neutral when released.

During normal operation, pushing the joystick forward will extend the dipper handle and dipper into the bank. Pulling the joystick rearward will retract the dipper handle and dipper toward the machine. The neutral position between the crowd and retract functions is defined by a detent that is easily felt. The rate of motion is controlled by varying the distance the joystick is moved from the neutral (center) position. Full forward or full rearward position provides maximum speed to the handle. Moving the joystick to neutral will cause a braking action slowing the crowding or retracting handle. Reversing the joystick will cause the motion to stop and if the joystick is held in this position, it will change the direction of the motion.

With the propel transfer switch in the PROPEL position, pushing the joystick forward will cause the left crawler to move forward. Pulling the joystick to the rear will cause the left crawler to move in the reverse direction. The crowd/retract motion is locked out electrically when the machine is in the propel mode.

Refer to JOYSTICK CONFIGURATION in this section of the manual to view the standard and alternate configurations for the Right and Left Joysticks.

DIPPER TRIP The dipper trip is part of the left joystick function in the standard configuration. Moving the joystick to the right will activate the dipper trip mechanism which releases the dipper door latch. The dipper trip is operational throughout the entire range of the crowd motion.

SIGNAL HORN Moving the Left Joystick (in the standard configuration) to the left will activate the signal horn. The signal horn is operational throughout the entire movement range of the crowd motion.

RADIO The radio supplied with your machine is an AM/FM Stereo radio with the capability to play cassette tapes in the player incorporated. This is a quality piece of sound equipment and will provide long term operation.

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HOIST BRAKE A selector switch used to set or release the Hoist Brake.

CROWD BRAKE A selector switch used to set or release the Crowd Brake.

SWING BRAKE A selector switch used to set or release the Swing Brake.

PROPEL BRAKE A selector switch used to set or release the Propel Brake.

Left Control Console

CLIMATE CONTROL PANEL The Climate Control Panel contains a rheostat controller on the top portion of the panel which is used to tailor the temperature of the air delivered to the operator’s cab within the selected mode of operation.

The Mode switch is provided to set the basic mode of operation for the roof mounted air conditioning/ heater unit.

The Blower Speed switch controls the volume of air being moved by the unit.

WINDSHIELD WIPER SWITCH The windshield wiper switch is located on the Operator Display monitor console at the left of the left operator’s console. It controls the speed of the wipers, as well as the starting and stopping of the wipers.

WINDSHIELD WASHER SWITCH The windshield washer switch is located with the windshield wiper switch on the Operator Display

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monitor console. It controls the supply to the washer reservoir which powers the washers.

CONTROLS ON THE RIGHT CONSOLE RIGHT JOYSTICK The Right Joystick controls the hoist/swing and propel. It is a joystick mounted on the right console of the operator’s seat. The joystick is used to control the hoist, swing and right crawler motions of the machine. The position of the propel transfer switch will determine whether this joystick controls the hoist motion or the crawler motion.

With the propel transfer switch in the dig position, and during normal operation, pushing the joystick forward will lower the dipper. Pulling the joystick to the rear will hoist the dipper. The neutral position between the hoist and lower functions is defined by a detent that is easily felt.

The speed of moving the dipper is controlled by varying the distance the joystick is moved from the neutral (center) position. The full forward or full rearward position provides maximum speed to the dipper. Moving the joystick to neutral will cause a braking action slowing the hoisting or lowering motion. Reversing the joystick will cause the motion to stop and if the joystick is held in this position, it will change the direction of the motion.

NOTE:

When the right joystick is used in the hoist/lower mode it is a spring returned switch.

That is, it will return to the neutral position when it is released.

Moving the joystick to the left from the neutral position will cause the machine to swing to the left.

Moving the joystick to the right will cause the machine to rotate to the right. The swing motion is operational throughout the entire movement range of hoisting or lowering the dipper. The swing rate of acceleration is controlled by varying the distance the joystick is moved from the neutral position. Moving the joystick to the neutral position will not stop the swing motion but will allow the machine to coast. To stop or change direction the control joystick is moved past the neutral point in the opposite direction. The rate of deceleration is controlled by varying the distance the joystick is moved from the neutral position in the opposite direction.

Refer to JOYSTICK CONFIGURATION in this section of the manual to view the alternate configurations for the Right and Left Joysticks.

With the propel transfer switch in the propel position, pushing the joystick forward will cause the right crawler to move forward. Pulling the joystick to the rear will cause the right crawler to move in the reverse direction. The hoist motion is locked out electrically when the machine is in the propel mode.

NOTE:

When the JOYSTICK is used in the swing mode the switch is a spring returned switch.

That is, it will return to the neutral position when it is released.

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CONTROL STOP PUSHBUTTON The control stop pushbutton is a pushbutton located on the right operator’s console. Normally it is used to de-energize controls after the machine has been safely stopped by placing motion controls in neutral.

Actuation of this pushbutton when motions are running will cause all motions to automatically electrically brake to a stop and, when the motion speed has reached less than 5% speed, set all mechanical brakes. If the motions are already stopped, the brakes will be set and power is removed immediately. A similar switch is located on the front panel of the PLC control cabinet that can be used during testing of the machine.

DANGER:

THE OPERATOR SHOULD NEVER LEAVE THE OPERATOR’S SEAT BEFORE PRESSING THE CONTROL STOP PUSHBUTTON. Setting only the mechanical brakes with individual switches is not a sufficient safeguard to prevent machine damage and/or personnel hazards.

CONTROL RESET PUSHBUTTON CAUTION:

This is not an automatic reset system. All controls must be returned to neutral before the control reset button is pushed.

Right Control Console

The control reset pushbutton is a pushbutton located on the right operator’s console. The reset pushbutton restores control to all motions if no additional faults exist. This pushbutton is inoperative until the main power start control has been actuated.

If a control fault occurs that shuts down a motion, all motions will automatically be shut down together.

At this time the operator should set all brakes. If the fault clears, the motion may be reset by pressing this pushbutton. If the fault does not clear, the unfaulted motions can be restarted by pressing this pushbutton to enable these motions to re-position themselves.

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DIG/PROPEL TRANSFER SWITCH The Dig/Propel Transfer Switch is used to switch between the two primary operating modes of the machine. The current mode of operation will be indicated on the Operator’s screen on the Operator’s Display.

IMPORTANT: • WHILE IN THE DIG MODE, THE PROPEL CONTROLS ARE DISABLED. • WHILE IN THE PROPEL MODE, THE DIG CONTROLS ARE DISABLED. The recommended procedure to transfer from dig to propel is to bring all motions to a controlled stop by the operator. Turn the hoist brake switch and crowd brake switch to the SET position and then press the control stop pushbutton. Turn the transfer switch from DIG to PROPEL. When the indicator on the Operator Display screen indicates that the transfer has been completed, push control reset and turn the propel brake switch to release.

EMERGENCY STOP PUSHBUTTON The machine stop/emergency stop pushbutton is located on the right operator’s console. It is used to remove power from the machine motions after the motions have been stopped in the normal manner. A second purpose of the pushbutton is to stop the machine under operational emergency conditions. Pushing this button will provide electrical and immediate mechanical braking simultaneously. Therefore, this button should only be used if the operator intends the harshest braking of all motions. If the machine is in motion, power will remain on the motions in order to provide electrical braking for a few seconds. If the machine is in motion or stopped, this button will power the DC bus to approximately zero voltage quickly after the time delay.

CAUTION:

PRESSING THIS BUTTON WHEN ANY DRIVE IS IN MOTION MAY RESULT IN COMPONENT DAMAGE.

A second pushbutton that also provides the functions as described above is located in the remote start console and is labeled “machine stop.”

MAIN POWER OFF PUSHBUTTON The main power off pushbutton is located on the right operator’s console. It is used only to immediately remove power from the drives in case of an electrical emergency involving component failure or fire.

CAUTION:

PUSHING THE “POWER OFF” PUSHBUTTON WHILE IN MOTION WILL IMMEDIATELY SET THE MECHANICAL BRAKES AND REMOVE INCOMING HIGH VOLTAGE FROM THE DRIVES. THIS ACTION MAY RESULT IN COMPONENT DAMAGE. It will also result in the inability to power the DC bus voltage down to a low value. This voltage will decay slowly, taking several minutes.

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EARTH CONTINUITY LOCKOUT PUSHBUTTON The earth continuity lockout pushbutton is used to trip the breaker that supplies power to the machine.

When the machine is operating, this pushbutton should be used to shutdown the machine only when removal of power to the machine is required.

TELEPHONE A telephone is located at the rear of the right control console. This telephone is connected to other phone stations throughout the machine.

OPERATOR’S SEAT

Operator’s Seat - Front View

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The operator’s seat has been selected to provide a maximum of operator comfort along with easy control access for increased productivity. The seat has numerous adjustments allowing it to be tailored to meet the individual needs of each operator.

Weight Adjustment The seat should be adjusted for the operator’s weight by pulling the actuator lever of the automatic weight and height adjuster while the operator is sitting in the seat and the machine is stationary.

Height Adjustment The seat height is adjusted pneumatically by pulling or pressing the adjustment lever as required to obtain the position required. DO NOT operate the compressor unit for more than 1 minute continuously.

Seat Cushion Angle Adjustment The angle of the seat cushion can be adjusted individually from the back. Lift the handle and exert pressure in the desired direction while seated. Release handle once the required position is achieved.

Seat Depth Adjustment The depth of the seat pan can be individually adjusted. Lift the handle and slide the seat pan forward or backwards to position. Release the handle when the desired position is obtained.

Armrest Adjustment The armrests can be adjusted to fit the individual needs of each operator or folded up and placed out of the way.

To adjust the armrest height loosen the manual friction knobs on the outboard side of the armrest allowing the armrests to pivot. Move the armrest to any desired position within its range and retighten when desired.

To raise the arm rests; lift at front and stow vertically.

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Headrest Adjustment The headrest can easily be adjusted by lifting, or tilting, headrest to the desired position.

Lumbar Support The curvature of the backrest can be adjusted pneumatically by pressing the switches on the lower left rear of the backrest.

Backrest Adjustment The backrest is adjusted by lifting the lever and then releasing once the desired position is obtained.

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WINDSHIELD WIPERS There are two electrically operated windshield wipers on the front window of the cab: one for the lower portion of the window and one for the upper portion of the window.

Check the wiper blades to make sure they swing freely across the window without contacting the window frame. Reposition the pantograph arm on the wiper motor shaft if necessary to prevent contact with the window frame.

Frequently check the condition of the wiper blades and replace if damaged.

WINDSHIELD WASHER An optional electric operated windshield washer unit supplies a cleaning agent to the windshield through spray nozzles when activated. When operating in warm climates, water may be used as the agent. In areas where freezing temperatures are encountered, a suitable commercial windshield washer solvent with anti-freezing characteristics is recommended.

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PRE-START CHECKS Before starting, inspect the machine to ensure it is ready to be put into operation. Failure to make such a routine check could result in unnecessary downtime. For example: an undetected oil leak could result in a dry gearcase, eventually leading to excessive gear wear or destruction, seized bearings or other mechanical problems. Broken strands in the hoist ropes, crowd rope, retract rope or structural strands could, if undetected, result in serious injury or damage to the machine or haulage unit. A few minutes spent inspecting the machine often results in considerable savings in time and machine efficiency.

WALKAROUND GROUND LEVEL INSPECTION Check the following areas daily during a general walkaround inspection: 1.

Check the areas under and around the crawlers for signs of oil leaks. If single droplets are noticed, leakage is minimal. Determine the point of leakage and make a note of it on the log sheet. If pooling of oil is noticed, determine the source and take corrective action immediately.

Determine if loose hardware, a defective gasket, a combination of both, or a similar problem is responsible. Tighten hardware or replace defective gaskets.

2.

Inspect the crawler belts for missing links or lock pins, excessive belt sag, cracked shoes or other deterioration. Check the oil level in the propel planetary gearcase. Add oil as required.

3.

Check the swing rack and pinion guards for rocks, dirt and other debris that will interfere with the operation of the machine. Inspect the swing rack gear and rollers for the proper lubricant film.

DANGER:

HIGH VOLTAGE! THE MACHINE TRAIL CABLE CARRIES A LETHAL

VOLTAGE. Handle the cable in an approved manner with appropriate rubber gloves and insulated hooks or tongs.

4.

Visually inspect the trail cable for cuts, abrasions and other damage.

5.

Visually inspect exterior of machinery house for damage or evidence of internal leakage.

6.

Inspect the dipper trip mechanism, rope, latch bar and associated hardware for damage, adjustment and wear.

7.

Inspect the dipper door, hardware and bumpers for damage and excessive wear.

8.

Inspect fulcrum attachment points, take up cylinders and spacers, and dipper handle for damage, excessive wear and evidence of adequate lubrication.

9.

Inspect boom bumper for security and damage.

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10.

Inspect the dipper and tooth adapters for tightness and excessive wear.

11.

Inspect padlocks for damage, wear and evidence of adequate lubrication.

12.

Check both the running ropes and the boom structural strands for broken strands and loose sockets.

ON-BOARD INSPECTION Check the following areas daily on board the machine: 1.

Visually inspect the swing, crowd and hoist gearcases for oil levels and leaks. Repair or service as required.

2.

Visually inspect all machinery for loose bolts, nuts, clamps or unusual deterioration. Repair as required.

3.

Visually inspect the open gears of the swing, crowd and hoist machinery for proper lubricant film and evidence of adequate lubrication from the automatic lubricant dispensing system.

4.

Visually inspect hoist and crowd ropes for wear, lubrication and evidence of birdcaging near the drum attachment beckets.

5.

Check the oil level in the air compressor. Add oil if required.

6.

Check lubricant supply level in the air system lubricator and lube system lubricators.

7.

Inspect the automatic lubrication central pumping stations for any signs of malfunctioning.

Check the lubricant supply and refill tanks if required.

8.

Visually inspect swing, crowd and hoist brake assemblies for damage, wear and evidence of an overheated condition.

9.

Check the operator’s cab for cleanliness and visual condition of controls and location of special equipment that may be required by the mine site. Check all operating controls for freedom of movement. Controls should move freely without binding.

10.

Clean windows of operator’s cab.

11.

Inspect all walkways and stairways to ensure there are no obstructions or fluids creating a safety hazard.

12.

Ensure ladder(s), steps and/or man basket are raised and properly stowed.

13.

Service manual lubrication points.

NOTE:

Detailed information on the proper servicing of these components can be found in Sections 3 and 4 of this manual.

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MACHINE START-UP, OPERATION AND SHUTDOWN START-UP Whether starting the machine for the first time, or starting after the machine has been in service for some time, the procedures are essentially the same.

1.

Perform all pre-start checks listed in PRE-START CHECKS in this section of the manual.

2.

Raise the boarding stair, making sure it is secured in the raised position. The limit switch at the top of the stair will not close and the controls will not energize if the stair is not in the fullyraised position.

Start-Up Control Locations

3.

In the operator’s cab check that all brake switches are in the SET position and that the joysticks are in the neutral position. Then go to the electrical room at the rear of the machinery house.

4.

At the AC control cabinet verify that the uninterruptable breaker is in the ON position. At the distribution panel, verify that all breakers are in the ON position.

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5.

At the remote starting console in the machinery house, use the following sequence to start the machine: a.

Verify that the green AUXILIARY GROUND FAULT light is lit.

CAUTION:

b.

NOTE:

6.

IF THE AUXILIARY GROUND FAULT LIGHT IS OFF, ALERT AN ELECTRICIAN AS SOON AS POSSIBLE. The machine may be operated with one fault but a second fault could cause damage to the machine and/or become a safety hazard. The fault should be cleared as soon as possible.

Verify that the green PHASE SEQUENCE light is lit. This indicates that the incoming power sequence is correct. If not, the light will be out and the machine will not start.

Electrical maintenance personnel must correct the problem.

This PHASE SEQUENCE light also indicates auxiliary power phase unbalance, phase loss or under-voltage. Any of these faults occurring while the machine is running will produce an alarm. In the event of such an alarm an electrician should be notified, however the machine may be operated.

c.

Verify that the PLC and drive cabinets’ green temperature lights are lit. If the cabinet temperature is too low or too high, the machine cannot be started.

d.

Verify that the green PLC POWER ON light is lit. This light should be on about 20 seconds after the UPS motor is started.

e.

Turn the AIR COMPRESSOR RUN switch to the run position or press the start pushbutton.

f.

Verify that the green SYSTEM READY light is lit.

g.

Press the SYSTEM RUN pushbutton. When this button is pressed, the system ready light will go out and the drive system will automatically power up.

h.

Verify that the red INCOMPLETE SEQUENCE light is out. If lit, call the electrician to troubleshoot the sequence.

In the operator’s cab, verify that the air pressure displayed on the operator’s display is correct.

The machine cannot be operated until the air pressure is at the specified rating.

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7.

Verify that the brake switches are in the set position, the joysticks are in the neutral position and the air pressure is at the correct pressure. Sound the signal horn and be sure all personnel are clear of machine.

8.

Turn the propel transfer switch to the DIG position. When the Operator Display lights indicate that the process is complete, press the control reset pushbutton to activate the controls.

9.

Turn the hoist, crowd and swing brake switches to their RELEASED position.

10.

Briefly actuate swing, crowd and hoist controls to make sure each motion is operational.

RESTARTING AFTER AN ELECTRICAL FAULT To restart the machine after the electrical control system has gone into a fault condition, proceed as follows: NOTE:

Before any or all motions can be reset, the following conditions must be met:

a.

No operator’s monitor special screens should be activated.

b.

For dig/propel motion the dig/propel transfer switch is in the position called for by the operator’s mode selector switch.

c.

The joystick for the motion being reset must be in the neutral position.

d.

The motion mechanical brake selector switch must be in the released position.

1.

For hoist or crowd travel limit faults, the motion will first slow down and then will stop, but the controls will remain active. Reversing the joystick will remove the fault and allow continued operation.

2.

For a boom jacking fault, the motion will stop but the controls will remain active. Reversing the left joystick will remove the fault and allow continued operation.

3.

If the boarding ladder is pulled down while the machine is in operation, an alarm message will be sent to the operator and swing and propel motions will be shut down. The hoist and crowd motions will remain active.

Once the ladder is back in position, the motions may be restarted by pressing the control reset pushbutton.

4.

For most other faults, the machine will be shut down and the brakes set. In these situations, the controls cannot be reset until the fault has been corrected by an electrician.

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OPERATION Efficient operation is essentially the result of understanding and applying the basic techniques related to each machine motion, to achieve fast, smooth and safe load cycles. The interrelated coordination of the hoist, swing and crowd motions results in efficient machine operation.

Each motion is described in the following paragraphs. The operator should thoroughly learn each motion, its purpose and how this knowledge can be applied in becoming a better operator.

When learning to handle the operator controls, be sure that all personnel are clear of the machine and that there is ample clearance with no danger spots around the machine, such as culverts, ditches, embankments and that the machine is not too close to the digging face or overhanging ledge and large rocks.

Use the Operator Display panel, in the operator’s cab, to assist in the operation of the machine.

The monitor allows a large number of messages to be sent to the operator from all portions of the control system. These messages fit into four basic categories: 1.

Normal routine operational messages.

2.

Alarm only.

3.

Delayed shutdown messages.

4.

Immediate faults and shutdowns.

This monitor also allows the setting of certain operating parameters for the machine. Refer to OPERATOR’S DISPLAY in this section of the manual for detailed descriptions of the Operator Display monitor screens and how they relate to the proper operation of the machine.

STOPPING THE MACHINE 1.

Return left and right joysticks to their center positions and set all brake switches.

2.

After all motions are stopped and brakes are set, press the CONTROL STOP pushbutton.

This action will remove power to the control units and set the brakes. The controls will become inoperative.

3.

To stop the machine completely and remove power from the drives, press the MACHINE STOP Pushbutton on the right operator’s console.

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MACHINE SHUTDOWN When shutting down the machine at the end of a shift proceed as follows: 1.

Park the machine on firm ground in a position where it cannot be damaged by a slide, falling rocks or flooding. In cold climates, be sure the crawler belts will not freeze into the ground.

2.

Place the dipper firmly on the ground.

3.

Make sure left and right joysticks are in their center positions.

4.

Make sure all brake switches are in their SET positions.

5.

Press the CONTROL STOP pushbutton. All primary controls should be de-energized.

6.

To de-energize the DC bus, press the MACHINE STOP pushbutton on the remote start console or the MACHINE STOP/EMERGENCY STOP pushbutton on the operator’s console.

7.

Place the air compressor switch on the remote start console in the STOP position.

8.

Close all windows in the cab and lock all cab doors.

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MACHINERY MOTIONS HOIST MOTION In standard configuration, Hoist motion is controlled by the operator’s right joystick. Set the propel transfer switch in the DIG mode. The crawlers should be positioned so that the digging is done over the front of the crawlers. Move the joystick between hoist and lower until a “feel” is developed for the height, depth range and speed at which the dipper moves. Practice the hoist function until movement can be stopped smoothly.

CAUTION: NOTE:

This joystick also controls the swing motion through left and right motions.

The following represents the standard configuration.

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CROWD MOTION In standard configuration, Crowd motion is controlled by the operator’s left joystick. Move the joystick to crowd and retract the dipper handle until a “feel” is developed for the limits and speed of the motion.

CAUTION: NOTE:

This joystick also controls the signal horn and dipper trip.

The following represents the standard configuration.

Practice the crowd and retract functions until the movement can be stopped smoothly. Combine the crowd and hoist functions and practice until smooth coordinated motions and subsequent machine effectiveness are achieved.

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PROPEL MOTION Propel motion is controlled by placing the propel transfer switch in the propel mode and actuating the left or right joystick. To propel in a straight forward direction, push forward on both the left and right joysticks at the same time. The speed is increased as the levers are displaced farther from neutral. To propel straight in reverse, pull equally both joysticks to the rear.

NOTE:

The control stop pushbutton must be pressed before the propel transfer switch can be activated.

DANGER:

THE HOIST AND CROWD BRAKES MUST BE SET WHENEVER IN THE PROPEL MODE.

Propel - Straight Forward/Reverse

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SWING MOTION In standard configuration, Swing motion is controlled by the operator’s right joystick. To swing in either direction, move the joystick lever in the direction of swing. Practice swinging in each direction until a “feel” is developed for start-up and stopping.

NOTE:

The joystick also controls the hoisting and lowering of the dipper through forward and backward motions.

DANGER:

Each motion - hoist or swing - is fully operational throughout the complete movement of the other motion.

NOTE:

When this joystick is used for propelling the machine, the hoist and crowd motions are electrically locked out.

NOTE:

The following represents the standard configuration.

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PROPER SWING MOTION Proper swing motion means smooth control and an efficient swing cycle. The swing motion is begun toward the haulage unit when the dipper is filled and is clear of the bank.

DANGER:

EXTENSIVE DAMAGE TO THE DIPPER HANDLE AND DIPPER CAN OCCUR IF THE MACHINE IS ROTATED BEFORE THE DIPPER CLEARS THE BANK.

The swing motion begins with acceleration to an optimum point at which the excavator is brought to a stop over the haulage unit. Maximum efficiency and minimum swing machinery wear are direct results of mastering the swing motion.

NOTE:

Improper swing motion results in erratic control and an inefficient swing cycle.

DANGER:

THE DIPPER SHOULD NEVER BE POSITIONED OVER PERSONNEL, TRAIL CABLES, RELATED ELECTRICAL EQUIPMENT OR OTHER EQUIPMENT. When the dipper is loaded, accidental tripping of the dipper door could result in death or serious injury to personnel and extensive damage to equipment. Empty dippers may contain small fragments of material that can be extremely dangerous when dropped from a considerable height. On long moves open the door on an empty dipper and lower the dipper to a point that permits moving without striking the ground.

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Time is required to accelerate any motion from zero to working speed and also to decelerate from working speed back to zero. THE TIME EXPENDED FOR ACCELERATING AND DECELERATING THE SWING REPRESENTS THE MAJOR PART OF THE ENTIRE DIG CYCLE. Therefore, the swing arcs must be kept to a minimum to obtain maximum operating efficiency. As an example: assuming that a 90° swing results in 100 percent of the maximum output, increasing the swing arc to 180° reduces output to 70 percent, while decreasing the swing arc to 45° increased the output to 126 percent. Therefore, a swing arc of 90° or less should usually be used.

Haul units should be positioned so their center line is approximately under or not more than slightly outside the swing path of the boom point. This substantially reduces the amount of dipper maneuvering required of the operator when positioning the dipper for dumping. Positioning of the haulage unit inside or outside the boom point makes it necessary to retract or crowd the dipper handle and dipper, which breaks the operator’s natural rhythm.

A clean, level pit floor must be maintained. A good operator will always clean the floor before moving into the bank. A clean and level floor grade is a requisite to safe and stable machine operation and reduces damage to crawler links and related components.

DANGER:

“SWEEPING” SHOULD NEVER BE ATTEMPTED WITH THE MACHINE. Sweeping consists of lowering the dipper to the ground and using the swing motion of the machine to move the dipper from side-to-side and “sweep” the pit floor. THE DIPPER, DIPPER HANDLE AND BOOM STRUCTURES CAN BE DAMAGED BY SWEEPING. A bulldozer or loader should be used to help the machine operator maintain a clean pit floor in conjunction with the shovel.

STEERING WHILE IN PROPEL MODE To make a gradual forward right turn, move the LEFT joystick (crowd) forward and leave the right joystick (hoist) in neutral.

To make a gradual forward left turn, move the RIGHT joystick (hoist) forward and leave the left joystick (crowd) in neutral.

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Whenever possible, gradual turns should be made in short increments of 15° to 20° maximum.

Propel straight for a short distance (usually 1/2 the length of the crawler belts) to clear the crawler belts of stone and other debris; then make another 15° to 20° turn. Continue until the turn is completed.

NOTE:

When steering in soft material such as sand, clay, etc., increments of less than 15° to 20° should be used to minimize material build up on the crawler belt roller path.

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COUNTER-ROTATION TURNS Although possible, a single sharp turn should be avoided to minimize material build up on the crawler belt roller path. This results in high loading of the crawler belt and associated propel components.

To make a sharp right turn, move the LEFT joystick forward and pull the RIGHT joystick to the rear.

To make a sharp left turn, move the RIGHT joystick forward and pull the LEFT joystick to the rear.

CAUTION: NOTE:

When using the counter-rotation method for turning, have a helper ensure that the trail cable does not get fouled and/or torn from the machine.

The ability of the machine to turn sharply is dependent on the surface on which the machine is setting. A soft surface will cause the crawlers to dig-in and machine to bogdown.

CAUTION:

The propel brakes are released when either joystick is moved from neutral. The propel brakes are set when both joysticks are returned to neutral.

When moving the machine in a straight line, propel forward, which is in the direction of the take-up axle to reduce strain on the crawler belts and propel mechanism. When not possible and propelling to the rear, make sure the trail cable is clear of the machine and follow the signals given by the helper. The machine should be rotated in a position to allow the operator to face the direction of travel.

NOTE:

Turning when propelling to the rear requires that the master control be positioned in a direction opposite the actual direction in which the turn takes place.

The machine should be moved close to the bank in short and frequent moves to maintain digging efficiency. Movement should occur between the loadings of haul units.

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POSITIONING THE MACHINE There are two basic methods for positioning the machine at the working face of the bank: the “backup method” and the “drive-by method”. Both methods are acceptable and effective.

BACK-UP METHOD When using the back-up method, position the machine at the bank with the front of the machine facing the digging face. The haul units are spotted on both sides of the machine. The bank can be excavated until a 180° circular area of material has been removed from the bank. Once the material is removed, a 90° or greater swing will be required in order to load the haul units, requiring the machine to be moved.

To reposition the machine, propel to the rear, away from the bank, at an approximate 45° angle to the bank. When the machine is centered in-line with the untouched edge of the previous excavation, propel straight toward the bank and position the machine for further digging.

The back-up method will minimize the swing arc and reduce moving time, produce less bank toe area clean up and simplify handling of the trail cable, cable standard and trail cable boat.

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DRIVE-BY METHOD NOTE:

If mine conditions or equipment prevent the use of the following procedures, use the “Back-up Method” instead.

Position the machine crawlers parallel to the bank with the outer set of crawler tracks directly in line with the bank toe.

The haul units must approach the machine from the front, making a turn away from the machine as the unit’s front wheel approaches the outside crawler. Haul units then stop in a position to allow backing toward the point of the bank for loading.

During the load cycle, swing arc is to one side only and should not exceed 90°. The cycle time from one full haul unit to the next empty unit should not exceed the cycle time between successive dipper loads to each unit.

During the load cycle, the swing arc should not exceed 90°. The time between finishing one truck to the first digging cycle of the next should not exceed that of any cycle during a load.

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START OF THE DIG CYCLE

The crowd motion forces the dipper lip into the bank at the start of the digging cycle. It is the crowd thrust which enables the dipper lip and front opening to get into a column of material of sufficient cross section to fill the dipper rapidly.

Force the Dipper Lip into the Bank

There is a direct relationship between crowd depth of bank penetration and the distance the dipper must rise in the bank to fill the dipper. The deeper the “bite” the quicker the dipper will be filled, providing the hoist force is sufficient to cut the column of material. Do not attempt to lift the entire bank with each pass. As soon as the dipper is full, retract it from the bank and swing the machine to fill the truck.

Crowd penetration should be rapid just at the arc of entry and rise as the dipper enters the bank.

This will permit as much digging as possible near the base of the bank. This is of particular advantage when digging loose or blasted material. The greater the hoist force and crowd thrust, the faster the dipper filling time of the dig cycle. The crowd thrust should be maintained to hold the dipper in the bank while it is being hoisted. An added benefit of proper crowd thrust and hoist force is that the opposing vertical resistance of the bank material tends to have a “ramming” effect in the dipper front opening, minimizing voids and producing larger dipper loads.

It is important that the full cutting surface of the dipper contact the bank on each pass.

A full face cut combined with deep bank penetration will result in a full dipper for the least amount of hoist. A partial cut, even with deep bank penetration, requires a greater rise and tends to leave voids in the dipper, requiring additional passes to fill the haulage unit.

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Shallow bank penetration of the arc of entry and rise is ineffective and inefficient. A shaving cut dribbles material into the dipper resulting in voids and making additional passes necessary while accelerating dipper lip wear.

NOTE: A Deeper Bite = Quicker Fill Times

Digging should take place under the boom point for maximum shovel effectiveness. If necessary, the machine should be moved closer to the bank face, rather than extending the dipper handle.

Reaching for material results in a partially filled dipper and excessive crowd and retract time. Use caution not to damage the boom point sheaves when operating close to the high wall.

Variations on Dipper Penetration

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Overcrowding with the dipper lowered can result in lifting the boom. This jacking action can result in damaged components.

Overcrowding the dipper in the bank slows up the dipper loading process, thereby reducing machine efficiency.

Dig with the Dipper Beneath the Boom Point

ENGAGING THE BANK To make maximum use of the hoist rope pull, the dipper rise should be as close to vertical as possible. The dipper should enter the bank approximately under and behind the boom point. The actual cut should start a few degrees behind an imaginary vertical line from the front of the boom point sheaves. Proper bank engagement results in maximum hoisting force in line with the cut. When the dipper is too far forward, bank penetration will be minimal and the hoist and crowd forces will oppose each other rather than working together.

Make Effective Use of the Hoist Effort

Dipper capacity rating is the struck measure cubic yard capacity. When digging, a load greater or less than the rated capacity may be obtained, depending on the type of material. An efficient operation can be measured by the number of dipper loads required to load a haulage unit. When the dipper capacity is efficiently sized to the truck capacity, not less than three or more than five dippers full should be required to load a unit. Other factors such as improper sizing of haulage units to dipper, improper material fragmentation, etc., also must be considered.

Hoist Force Opposes Crowd Force

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In all types of digging the skilled operator must carefully control the desired depth of cut and control the hoist power requirements. Often, digging situations are encountered which require hoist and crowd motions to maneuver around oversize or lodged obstructions in the bank, rather than attempting to lift the entire bank.

DANGER:

MAINTAIN A DIGGING FACE WHICH AVOIDS ANY MAJOR SLIDES WHICH COULD CAUSE AN ACCIDENT. Examine the digging face for large boulders, large rocks, or frozen material which could slide and cause an accident. Avoid overhanging material.

Do not repeatedly stall the dipper in the bank, nor maintain a stall condition. The life expectancy of the hoist machinery and hoist ropes is directly related to the operator’s skill in avoiding stalling. Whenever stall conditions are encountered, back off on the hoist motion, retract the dipper, or do both. Avoid stall conditions at all times.

DANGER:

DO NOT SUSPEND A LOADED OR EMPTY DIPPER IN THE AIR WITH THE BRAKES SET FOR LONG TIME PERIODS. Lower the dipper to the ground if the machine is to be idle or unattended for any length of time. Failure to comply can result in personal injury or death of anyone beneath the dipper.

For most efficient production, the dipper should be loaded from the most remote point while waiting for a truck. When the truck is positioned, excavating should begin close to the haulage unit, progressively working away from the unit.

This technique saves time by allowing smooth, short dig cycles and eliminates excessive swing, crowd and retract motions.

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SLOPE LIMITATIONS While it is strongly recommended that the machine dig on level ground for the greatest possible productivity and the longest component life, limited operation on slopes up to 8% is, however; acceptable with only minimal adverse effects.

NOTE:

It is important to remember the difference between Slope Percent and Degrees!

Slope vs. Degrees

Rollover and Operation Limits

EXCAVATED MATERIAL It is important that the operator not only know the controls but recognize other aspects of the mining operation. Chief among these is the type of material to be excavated. It plays a great part in the overall efficiency of the machine.

Materials can be roughly divided into four categories.

1.

EASY DIGGING - This category includes all loose, free-flowing materials, such as sand and

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gravel deposits, stock pile materials such as finely crushed stone, ore fines, coal fines and any other similar materials. The dipper will usually obtain a heaped load.

2.

MEDIUM DIGGING - This category includes only materials which can be excavated from their natural beds without blasting and which break up in bulk with some voids. Such material includes clay, dry earth, clay-gravel mixtures, gravel with some boulders, certain types of ores and coal. The dipper will usually obtain a full load, with filling augmented by the material’s natural tendency to break apart when it encounters the dipper lip and teeth.

3.

HARD DIGGING - Included in this category are materials that require blasting, resulting in good fragmentation, but leaving large chunks which develop voids. Limestone, gypsum shale, cemented gravel, wet earth, clay and certain types of ore and overburden all fall within this category. The dipper will average less than a full load because of the resistance of the material against flow and voids due to blocky material

4.

VERY HARD DIGGING - This category includes all materials that require heavy blasting and give irregular fragmentation. Taconite, granite, laminar shale, certain types of limestone and conglomerate overburden fall into this category. The dipper will average considerably less than a full load, because of the large chunks and interlocking action of the material which block fill.

OPERATION CHECKS During machine operation there are several things to consider relative to safe, efficient machine operation.

1.

Check the motors for unusual noise, loss of power or failure to respond to controls.

2.

Check hoist, crowd, swing and propel machinery for unusual sounds and overheating of bearings.

3.

Avoid slack hoist ropes which could allow the ropes to become crossed on the drum, or skip a groove.

4.

Check the air gauge frequently and investigate immediately if there is a drop in air pressure.

Correct all air leaks.

5.

When propelling, check the engagement of the drive tumblers on the crawler belt links and adjust the belts to correct any improper alignment.

6.

When operating auxiliary functions, such as steering, note any tendency of the controls to jam or hang up. Check and correct any problems at the earliest opportunity.

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OPERATING HINTS The following hints are reminders of the do’s and don’ts related to excavator operation: • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

Engage the bank properly.

Load with the successive pass technique.

Maintain a clean pit floor.

Use proper hoist control.

Make effective use of the hoist pull.

Use proper crowd control.

Force the dipper lip into the bank at the arc of entry.

Crowd the dipper into the bank for deep penetration.

Make full face cuts for faster loading cycles.

Dig under the boom point.

Make smooth, safe swing cycles.

Keep swing arcs within 90°.

“Spot” the haulage units properly.

Keep the working faces free of projections.

Propel forward whenever possible rather than backward.

Move up to the bank frequently.

Dig over the take-up axle end of the crawlers whenever possible.

Make gradual turns when propelling.

Maintain adequate clearance between digging face and point sheaves.

Do not suspend a loaded dipper for an extended time.

Do not operate too close to material.

Do not operate with missing dipper teeth.

Do not stall hoist or crowd motions.

Do not reach for material.

Do not reach for haulage units.

Do not overcrowd and jack the boom or machine.

Do not make partial face cuts.

Do not make shallow bank penetration.

Do not make erratic swings.

Do not swing until dipper is clear of the bank.

Do not swing loaded or unloaded dippers over personnel or equipment.

Do not “sweep” pit floor.

Do not make sharp turns when propelling.

Do not make long inefficient moves.

Do not exceed swing arc of 90°.

Do not spot haulage units inside or outside the boom point swing arc.

Do not allow the dipper to contact the crawler belts.

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STOPPING THE MACHINE 1.

Return left and right joysticks to their center positions and set all brake switches after all motions have stopped.

2.

After all motions are stopped and brakes are set, press the CONTROL STOP pushbutton.

This action will remove power to the control units and set the brakes. The controls will become inoperative.

3.

To stop the machine completely and remove power from the drives, press the MACHINE STOP Pushbutton on the right operator’s console.

MACHINE SHUTDOWN When shutting down the machine at the end of a shift proceed as follows: 1.

Park the machine on firm ground in a position where it cannot be damaged by a slide, falling rocks or flooding. In cold climates, be sure the crawler belts will not freeze into the ground.

2.

Place the dipper firmly on the ground.

3.

Make sure left and right joysticks are in their center positions.

4.

Make sure all brake switches are in their SET positions.

5.

Press the CONTROL STOP pushbutton. All primary controls should be de-energized.

6.

To de-energize the DC bus, press the MACHINE STOP pushbutton on the remote start console or the MACHINE STOP/EMERGENCY STOP pushbutton on the operator’s console.

7.

Place the air compressor switch on the remote start console in the STOP position.

8.

Close all windows in the cab and lock all cab doors.

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2 - 44

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2 - 45

4745

2152

4120

1869

4000

1814

4120

1869

362000

164200

103600

46992

57900

26262

4900

2223

490

222

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Collector Ring Assembly Rotating Frame Assembly

2 - 46

1238

562

116750

52957

298600

135443

151950

68923

79700

36151

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108450

49192

35528

16115

4120

1869

490

222

BI624060

2 - 48

74100

33611

27510

12478

920

417

22930

10401

27622

12529

93

42

10535

4779

1350

612

1350

612

2620

1188

BI624060

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5460

2476

4745

2152

1744

791

500

227

BI624060

2 - 50

5350

2427

490

222