Manitowoc Grove GRT8120, Operator'S Manual

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SAFETY INFORMATION GRT8120 OPERATOR MANUAL
2-40
Published 3-22-2021, Control # 702-02
caution handling and operating these components in sub-
zero temperatures, avoiding shock loading.
In freezing weather, park the crane in an area where it
cannot become frozen to the ground. The drive line can be
damaged when attempting to free a frozen crane.
If applicable to your crane, frequently check all air tanks for
water in freezing weather.
If applicable to your crane, always handle propane tanks
according to the supplier’s instructions.
Never store flammable materials on the crane.
If cold weather starting aids are provided on your crane, use
them. The use of aerosol spray or other types of starting
fluids containing ether/volatiles can cause explosions or fire.
TEMPERATURE EFFECTS ON HOOK
BLOCKS
The Hook Block Working Load Limit (WLL) is valid between
60°C (140°F) and the low temperature limit given on the
hook block identification plate with normal lifting precautions.
L i f t i n g a b o v e 7 5 % o f t h e Wo r k i n g L o a d L i m i t , a t
temperatures between the service temperature given on the
identification plate and -40°C (-40°F), must be done at a slow
and steady rate to avoid stress spikes.
75% of the Working Load Limit must not be exceeded when
lifting in temperatures below -40°C (-40°F).