OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-10 Published 3-23-2020, Control # 654-04
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.
NOTE: Operation of heater is NOT allowed:
• 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 heater in enclosed spaces
(example: garages).
To activate heater, make sure fuel supply valve from heater
fuel reservoir is turned to the ON position. Make sure battery
disconnect switch is turned to the ON position and push the
activation button at the heater control panel. A green light will
come on indicating system is activated. The start-up and
shutdown cycles may take approximately 2 minutes for
initialization. Make sure coolant, transmission heater, swivel,
battery heater, in-line fuel pump, in-line fuel heater, and
hydraulic reservoir heater are heating properly.
To deactivate heater, push button at heater control panel.
The green light will go off indicating system is deactivated.
Shutdown cycle takes approximately 2 minutes.
NOTE: Accelerated discharging of battery will occur when
crane engine is switched off. If heater is operated
with crane engine stopped, batteries will need to be
recharged after a short period of time.
Radiator Shutters
When starting engine, radiator shutters close and then
reopen when coolant temperature reaches 71°C (160°F).
Auxiliary Cab Heater
The crane cab is heated with an auxiliary air heating system
that runs independently of the engine. Heat is generated by
burning fuel taken from the heater fuel reservoir.
To heat the operator’s cab, activate the auxiliary diesel
heater and adjust temperature control switch mounted in the
overhead panel. The heating system fan delivers warm air
into an air distribution box. Air is circulated according to
control settings and then delivered into the cab by a fan
through various air extraction and air delivery vents.
Do not cover vents with bags, articles of clothing or any other
objects. Keep hot air inlet and hot air outlet free of dirt and
foreign material. Soiled or blocked hot air lines may cause
overheating, and result in damage.
The crane auxiliary cab heater can be operated when engine
is running or stopped as part of the programmable auxiliary
heating system. Maximum cab temperature is achieved by
running only the auxiliary heater and using the standard cab
heater fan when engine is sufficiently warmed up. The
standard hot water crane cab heater can also be turned on
after engine has started and is warmed to operating
temperature.
NOTE: When using heater at high altitudes, factory heater
setting must be re-calibrated for proper heater
operation.
• Heating at altitudes up to 1,500 m (4,900 ft)
Unlimited heating is possible
• Heating at altitudes over 1,500 m - 3,000 m (4,900 ft -
9,900 ft):
Heating is possible for short periods at this altitude
(example: driving over a mountain pass or taking a
break while traveling between job sites).
During longer stays, (example: construction job project), the
fuel supply must be adjusted to the altitude or the heater will
malfunction. This can be done by installing an air pressure
sensor kit (Grove part number 90037674). Contact an
authorized Grove distributor or Manitowoc Crane Care for
additional assistance.
NOTE: Accelerated discharging of battery will occur when
crane engine is switched off. If heater is operated
with crane engine stopped, batteries will need to be
recharged after a short period of time.
Battery Heater
An in-line battery coolant heater circulates warm coolant
under the battery when temperature is below -9°C (15°F).
The battery coolant heater should be activated 2 hours
before starting the crane to allow sufficient time to preheat
batteries and provide easy start-up conditions.
WARNING
Explosion Hazard!
Before switching on, check if heater can be operated at
current site of the crane. There is a danger of explosion
when using heater around combustible objects! Do not
park vehicle near objects that are flammable.
Use caution near heater exhaust tailpipe as it will also
become very hot.
To Next Page
Loading...
Need help?
General
