LEFT CONTROL CONSOLE - OVERVIEW

LEFT CONTROL CONSOLE

LEFT CONTROL CONSOLE - OVERVIEW

PROGRAMMED DRILL CONTROL PUSHBUTTON — OPTION

The programmed drill control pushbutton is used to activate or deactivate the programmed drill control system on the machine.

OPERATING MODE SELECTOR SWITCH

This four-position switch is used to select one of three drill operating modes.

PROPEL - Enables all propel functions while disabling the winch, mast and all rotary and pulldown/ hoist functions.

DRILL - Enables all drilling functions while disabling all propel functions.

MAST/WINCH - Enables all mast and winch functions while disabling all propel functions.

REMOTE - Enables all propel functions to be operated from the remote control unit and disables the cab operator controls.

PULLDOWN / HOIST SPEED RANGE SELECTOR SWITCH

The pulldown/hoist speed range selector switch controls the operating mode and speed range of the hoist/pulldown drive when in a drilling mode of operation. The operating mode selector switch must be in the DRILL position for this speed selector to function.

The switch is a four-position switch with the following designations: PULLDOWN, HOIST LOW, HOIST HIGH, and PIPE RACK/JOINT.

In the PULLDOWN setting, which is used for normal drilling, full pulldown force is available but the speed range for both pulldown and hoisting is limited to about 25 FPM (7.62 MPM).

The HOIST LOW and HOIST HIGH settings are used for pipe raising at high speeds.

In the HOIST LOW position full hoisting and lowering force is allowed, but the speed is allowed to reach a higher level (typically about 25 FPM [7.62 MPM]).

In the HOIST HIGH position maximum head speed capability is allowed for both hoisting and lowering. Typically about 75 FPM (22.86 MPM).

As a result of obtaining a higher speed, the hoist force capability at full speed is not as large as is obtainable in the HOIST LOW position.

In the PIPE RACK/JOINT position, the speed limit is reduced to 25 FPM (7.62 MPM) the down force is limited to head and drill steel weight. This is the switch position for any pipe rack operation.

NOTE: Pipe rack operation also requires the rotary head assembly to be above the pipe racks before operation is allowed.

HOIST BRAKE SWITCH

The hoist brake switch is a two-position switch used to set or release the hoist brake. This switch must be in the RELEASE position before the hoist/pulldown drive is allowed to move the mast machinery. Placing the switch into the SET position during the machine operation immediately disables hoist/pulldown drive operation.

Under normal operating conditions, the hoist/pulldown speed rheostat should be set to “OFF” before setting the brake.

NOTE: Applying the hoist brake is a spring action. After the HOIST BRAKE switch is turned to the SET position, the brake coil is de-energized allowing the springs in the brake to apply force to the brake discs.

When releasing the hoist brake, the brake coil is energized; compressing the springs, which release pressure on the brake discs.

MAIN AIR VALVE SWITCH

This two-position switch is used to control the butterfly valve on the air compressor’s discharge line. The operating mode switch must be in the DRILL position (in other modes it defaults to the closed position).

OPEN - Opens the butterfly valve.

CLOSE - Closes the butterfly valve and causes the air compressor to run unloaded.

DEPTH INDICATOR RESET PUSH-BUTTON

The depth indicator reset push-button is used to zero out the depth meter, as shown on the operator’s display monitor, when one hole is completed and another is to be started.

EMERGENCY STOP PUSH-BUTTON

The emergency stop push-button on the left control console is a large red mushroom head pushbutton switch. Pressing the emergency stop push-button will shut-down the air compressor, hydraulic systems and shut-off all controls. It will also simultaneously provide immediate mechanical braking. This button should only be used in emergency situations.

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

BIT VIEW HATCH SWITCH

This two-position switch is used to move the hatch for viewing the drill bit on the ground. Moving the switch to the CLOSE position will close the hatch. Turning the switch to the OPEN position will open the hatch.

LEFT JOYSTICK (DUAL FUNCTION) - PROPEL TRACK / WINCH

NOTE: A neutral lock is provided to prevent accidental movement of the joystick. The joystick automatically returns to neutral and the lock is engaged anytime that the joystick is released. To enable movement of the joystick, lift up on the lock (located below the joystick knob). Speed of operation increases as the joystick’s position is deflected farther away from neutral.

LEFT TRACK PROPEL - Use to control the propel speed and direction for the left track when the OPERATING MODE switch is at the PROPEL position.

NOTE: The propel brake must be released, the jacks fully retracted, the boarding stairs up.

1. PUSH the joystick away from you to propel the left track forward.

2. PULL the joystick toward you to propel the left track in reverse.

WINCH - Use to control the winch hoist/lowering speed, along with the direction of travel when the OPERATING MODE switch is in the MAST/WINCH position.

1. PUSH the joystick away from you to hoist or raise the winch hook.

2. PULL the joystick toward you to lower the winch hook.

ROTARY DRIVE SPEED SELECTOR SWITCH

The rotary speed selector switch is a three position switch located above the rotary rheostat. This switch determines the speed/torque range of the rotary motor. In the LOW position, the motor has the highest torque capability but is limited in speed to about 85-100 RPM at the bit. In the HIGH position, the motor has a higher speed capability (110-140 RPM range) but motor torque will be less (typically 68% to 74%). The MEDIUM position provides for operation between the HIGH and LOW positions.

The switch should be set to the range that most closely matches the desired bit speed range. The LOW setting is sufficient for most conditions. If more speed is desired, select the desired range as needed.

HOIST/PULLDOWN RHEOSTAT

The hoist/pulldown rheostat controls the speed and direction of the hoist-pulldown motor for hoisting or lowering the rotary drive unit.

Turning the rheostat in the hoist direction from the “0” position will raise the rotary drive unit. Maximum speed is available at full clockwise position.

Turning the rheostat in the pulldown direction from the “0” position will lower the rotary drive unit. Maximum speed is available at full counterclockwise position.

NOTE: The rheostat utilizes a reference scale and pointer. When the rheostat is turned, the pointer indicates, on the reference scale, the relative percentage of full speed being set.

The panels with controls as shown on the following pages are typical of what could be included on a console.

DUST CONTROL ON/OFF SWITCH — OPTION

The dust collector switch is a two position switch used to start the fan on the dust collector hopper. When the switch is in the OFF position, it will shut the dust collector fan motor off.

DUST CURTAIN SWITCH — OPTION

The dust curtain switch is a two-position switch. Turning the switch to the UP position will raise the dust curtains. Turning it to the LOWER position will lower the dust curtains.

DUST CONTROL FLOW CONTROL — OPTION

This switch is not used on this application.

UNDER DECK SPRAYERS — OPTION

This switch is not used on this application.