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generally long-lasting antirust and antifreeze liquid (FD-2 type-35-degree), which is
not changed around the year, regardless of summer or winter. Generally, after being
used for one year, it should be let out for filtration and purification and then put to use
again. The cooling system is furnished with an auxiliary water tank (compensating),
on the wall of which are marked with “FULL” and “LOW”, between which the level
of antifreeze liquid should stay when the system is in use.
(2) Regularly check the sealing performance of the cooling system and the level of
antifreeze liquid and shoot the trouble as early as possible, otherwise, the auxiliary
water tank will lose its function, give wrong indication of level and finally shorten the
lifetime of the engine.
(3) When antifreeze liquid is used as cooling medium, it is strictly forbidden to add
water and different type of antifreeze liquid at will. Antifreeze liquid of same type
should be replenished after the liquid leaks or evaporates.
(4) If water is used as cooling medium, it probably freezes in cold winter when the
machine is not at work. In this case, the water should be discharged from the radiator.
After the radiator works for a period of time, it should be dismantled and put into
boiling soda solution for cleaning the scale or sediment accumulated on the inner
surface of it.
(5) During operation, if the radiator of forklift “boils” or the temperature of cooling
liquid is too high, do not open the cover of radiator immediately. If the cover needs to
be removed to find out the cause for it, reduce the rotational speed of engine to the
moderate, slowly rotate the cover and not remove it very soon so as to prevent
operators from being scalded by the splashing liquid. When recovering the radiator, it
must be screwed tightly, otherwise, the system may not be well enclosed and the
system pressure stipulated cannot be formed.
(6) Based on different working conditions, regularly clean the outer surface of the
radiator with detergent, compressed air or high-pressure water (no less than 4kg/cm
2
).
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