RT800E OPERATOR MANUAL

Backup Alarm (Not Shown)

The Backup Alarm is an audio system used to warn personnel outside the crane when the crane is backing up. The alarm system is electrical and consists of the backup alarm and its associated wiring. The alarm is connected to the electrical wiring for the transmission reverse solenoids. It is activated when the transmission shifter is in the reverse position. The backup alarm is installed in the rear outrigger box behind the grill plate.

Emergency Exit

The windshield is considered the Emergency Exit. In an emergency, push out on the windshield and escape through the opening.

Operating Procedures

Pre-Starting Checks

A complete walk-around visual inspection of the crane should always be made with special attention to structural damage, loose equipment, leaks, or other conditions that would require immediate correction for safety of operation. The following checklist items are suggested specifically for the operator’s benefit to make certain his crane is prepared for starting the day’s work.

Fuel Supply

Check the fuel level and make sure the cap is on tight.

Engine Oil

Check the oil level in the crankcase and fill to the FULL mark on the dipstick. Do not overfill.

Engine Coolant

Check the coolant level in the radiator sight gauge and fill to the proper level. Do not overfill and check to make sure the radiator and reservoir caps are secure.

Batteries

Check that the battery cables and clamps are tight and not corroded.

Signal and Running Lights

Check all signal and running lights for proper operation. Replace burned out lamps with those of the same number or equivalent.

Foot and Parking Brakes

Check the foot and parking brakes for proper operation.

Daily Lubrication

Make certain that all components requiring daily lubrication have been serviced. (Refer to Section 5, Lubrication.)

Operating Controls And Procedures

Hydraulic Reservoir and Filter

Check hydraulic fluid quantity level and filter condition indicator. Check breather for cleanliness and ensure it is secure.

Tires

Check for severe cuts, foreign objects embedded in treads, and for correct inflation pressures. A tire inflation chart, providing the correct air pressures, is located in the Load Chart Book in the crane cab.

Wire Rope

Inspect wire rope in accordan ce with applicable Federal Regulations.

Inspect sheaves, guards, guides, drums, flanges, and any other surfaces that may come in contact with the rope for any condition that could cause possible damage to the rope.

Hook Block

Visually inspect for nicks, gouges, cracks, and evidence of any other damage. Replace any hook that contains cracks or shows evidence of excessive deformation of the hook opening, including twist. Be sure the safety latch is free and aligned.

Air Cleaner

Check the filter restriction indicator. Check filter and tubing for security.

Cold Weather Operation

The following recommendations are for operating Grove cranes in regions with ambient temperatures below -9°C (15°F) which are considered arctic.

NOTE: Additional information regarding cold weather operation is available through your Cummins dealer/service center under Service Bulletin 3379009.

Use particular care to ensure that cranes being operated in very cold temperatures are operated and maintained in accordance with the procedures as provided by Manitowoc. Therefore, always ensure adequate lubrication during system warm-up and proper operation of all crane functions when operating in cold weather and regardless of the oil viscosity of the crane’s lubr icants, always follow the cold weather start-up and operating procedures described in the Operator Manual. To ensure adequate lubrication during system warm-up and proper operation of all crane functions, (Refer to Lubricants and Lubrication Intervals, page 5-1.) If in doubt of the suitability of a specific fluid or lubricant, check with an authorized Manitowoc distributor or Manitowoc Crane Care. Cranes should have appropriate hydraulic oil, lubricants, and other auxiliary items required for operation in sub-zero temperatures.

Manitowoc recommends the crane is equipped with the following cold weather accessories:

-29°C (-20°F) Package

• Transmission heater

• Swivel heater

• Battery heater

• Fuel heater

• Engine hood insulation

• Fan clutch

• Radiator air shutters

• Air diverter

• Diesel fired cab heater

• Cold weather alternator

• Fluids suitable to -29°C (-20°F)

- Arctic windshield washer fluid

- Arctic fuel

-40°C (-40°F) Package

• Coolant heater (to circulate warm coolant through heaters and engine)

• Transmission heater

• Swivel heater

• Battery heater

• Fuel heater

• Engine hood insulation

• Fan clutch

• Radiator shutters

• Air diverter

• Diesel fired cab heater

• Cold weather alternator

• Super-capacitor starting system

• Fluids suitable to -40°C (-40°F):

- Arctic windshield washer fluid

- Arctic fuel

Individual crane functions should be operated to ensure they are sufficiently warmed prior to performing a lift.

Operation of cranes at full rated capacities in ambient temperatures between -9°C and -40°C (15°F and -40°F) or lower should be accomplished only by competent operators who possess the skill, experience, and dexterity to ensure smooth operation. Shock loading shall be avoided. See

Section 5 of this manual for more detailed information on operation of cranes down to -40°C (-40°F).

Component Coolant Heater

A diesel fueled coolant heater circulates warm coolant through engine and crane components when operating during arctic temperatures. The coolant heater should be activated 2 hours before starting the crane to allow sufficient time to preheat fluids and assist with easy start-up conditions.

WARNING Explosion Hazard!

Before switching on, check if the heater can be operated at the current site of the crane. There is a danger of explosion when using the heater around combustible objects! Do not park the vehicle near objects that are flammable.

Use caution near the exhaust tailpipe as it will also become very hot.

NOTE: Operation of the heater is not permissible:

•At locations where flammable gas or vapors are found or can be formed (example: at fuel stations and chemical factories)

•At locations where explosive dust is found or can be formed (example: coal, wood or grain dust).

•There is a risk of suffocation when using the heater!

• Do not operate the heater in enclosed spaces (example: garages).

To activate the heater, ensure the fuel supply valve from the heater fuel reservoir is turned to the ON position. Ensure the battery disconnect switch is turned to the ON position and push the activation button at the heater control panel. A green light will illuminate indicating the system is activated. The start-up and shutdown cycles may take approximately 2 minutes for initialization. Ensure the coolant, transmission heater, swivel, battery heater, in-line fuel pump, in-line fuel heater, and hydraulic reservoir heater are heating properly.

To de-activate the heater, push the button at the heater control panel. The green light will turn off indicating the system is de-activated. The shutdown cycle may take approximately 2 minutes.

NOTE: Accelerated discharging of battery will occur when the crane engine is switched off. If you run the heater while the crane engine is stopped, the batteries voltage will need to be recharged after short periods of time.