Manitowoc Grove GRT880, Operator'S Manual

Page: 125 / 202

Grove
Published 3-25-2020, Control # 643-04
3-61
GRT880 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
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.
Ensure battery heater coolant valve is turned OFF in ambient
temperatures above -9°C (15°F).
Air Diverter
An air diverter directs warmed air collected from under the
engine hood when temperature is below -9°C (15°F) to
preheat the air intake going to the engine.
Ensure air diverter is switched to outside air intake in
ambient temperatures above -9°C (15°F).
Super Capacitor
The super capacitor provides additional cranking during cold
weather startup. The super capacitor is connected to the
standard batteries with an isolation relay. The positive relay
feed is activated when the key is in the crank and run
positions.The super capacitor allows the starter to be
cranked for 30 seconds then cycled off for 60 seconds before
cranking again until the engine starts.
If crane has been left with battery disconnected for an
extended period of time, super capacitor will need up to
30 minutes to charge before having full cranking capacity.
Capacitor charge can be measured by the following:
• Turn battery disconnect to on position.
• Press black button located on top of capacitor:
• If light flashes green, capacitor is charging and may not
successfully start machine.
• If light is solid green, capacitor is charged and ready for
starting.
Any other color or flash pattern may indicate an error. Refer
to decal located on capacitor.
Diesel Fuel
Diesel fuel with low temperature characteristics is required to
operate the engine down to an ambient temperature range
from - 40°C (-40°F) to 49°C (120°F). Refer to the applicable
engine manual for proper specifications.
Use correct grade of fuel for prevailing temperature. Diesel
fuel should have a cloud point of 6°C (10°F) less than the
lowest expected temperature. In case of emergency,
kerosene may be added to the fuel to bring the cloud point
down to the required temperature.This will minimize clogging
of filters and small passages by wax crystals. Addition of
kerosene is NOT recommended for general use. Refer to
Arctic Lubricants and Conditions , page 5-4 of this operator
manual.
Operation Below -40°C (-40°F)
For crane operation below -40°C (-40°F), derate load chart
capacities by 6.60% for each degree Celsius or by 3.67% for
each degree Fahrenheit below -40°C (-40°F).
Crane Warm-up Procedures
The following procedures must be taken to properly warm
different crane components before operating crane.
NOTE: For temperatures below -9°C (15°F) refer to arctic
lubricants and conditions in the Operator and
Service Manuals.
Before starting crane, ensure appropriate lubricants are used
for ambient temperatures in which the crane will operate (a
list of lubricants and temperature ranges can be found in the
Lubrication section of your crane’s
Operator Manual , by
contacting your local Grove distributor, or by contacting
Manitowoc Crane Care directly).
CAUTION
Engine Damage Hazard!
If Ultra Low Sulfur fuel is not used in engines that require
it, the engine warranty will be void. Engine performance
will quickly deteriorate and it may stop running.
CAUTION
Crane Damage Hazard!
Operating crane with incorrect lubricants and fluids for the
prevailing ambient temperature and/or failing to
adequately warm crane before cold weather operation
can lead to a failure of a crane component or system.
Always use Grove recommended lubricants and fluids for
prevailing ambient temperature. Properly start and warm
crane using cold weather procedures found in this
Operator Manual and supplement before operating crane
at full load.