Hyundai HL970A Operator's Manual page 43

Cautions when operating in specific areas
Operating in extermely cold environments
Do not attempt to start, stop or turn the machine suddenly as
this may cause it to slip. There is potential for the machine to slip.
Snow-covered or frozen ground may be slippery and
dangerous.
Idle operation of the machine may be required to elevate the
engine temperature during startup.
An impact resulting from a sudden movement of the boom or
the attachments at an extremely low temperature may cause
serious damage to the machine.
The working cycle or loading weight might be reduced to
lower than those under normal conditions.
Check the following conditions before operating the machine :
- Warm up the engine for 3~4 seconds when starting up the
engine.
- Always fully charge the battery. A discharged battery will
freeze earlier than a fully charged battery.
- Use engine oil and fuel that are appropriate for the
temperature.
- Keep the fuel tank full.
- Remove any moisture from the fuel tank, and change the
fuel filter regularly.
- If the fuel filter is frozen, the flow of fuel may be blocked.
- Pour the proper volume of antifreeze into the coolant.
- Wait until the various parts of the machine reach the
operating temperature after starting the engine.
- Make sure that every controller and function of the machine
operates normally.
- Remove any dirt, snow and ice from the machine after
completing the operation, and park the machine on a
wooden pallet.
Operating in extremely hot environments
Continuous operation of the machine for a long period of time
may cause the machine to overheat. Pay special attention
to prevent the overheating of respective parts such as the
engine and the hydraulic system, and stop the machine and
take a break if necessary.
Check the following conditions frequently :
- Check the level of the coolant in the radiator.
- Check the radiator grill for clogging by foreign pollutant,
and remove them, if any.
- Check the level of the battery electrolyte.
- If the battery will not be used for a long period of time, store
it in a cool place.
- Check the hydraulic system for oil leakage.
- Check the lubrication oil on the respective parts, and top
up the oil if necessary.
- If the paint coating of any parts has been effaced or
damaged, coat the parts with paints or treat them with an
anti-rust additive.
- Do not park the machine under direct light for a long period
of time.
- When parking or storing the machine outdoors, use the
proper cover to protect the machine from sunlight and dust.
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