Wren KLW4120, Operation And Maintenance Manual

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1. The inspection before operating
(1).Please shut off the pump and inspect whether the position of the power connection is loose or
not. If it is loose, please tighten it.
(2).Please inspect whether the hydraulic oil in the oil reservoir is enough or not, if it is not enough,
please fill the oil in time.
(3).The pump is still working when the direction of the air valve is changed, please build up pressure
and inspect whether the whole equipment is normal or not.
(4).Please inspect whether the house and other equipments are leaky or not, if this happened,
please inspect to find the reason and repair it or replace it.
2.The inspection in operation
When inspecting the following items, if there is abnormal situation, please shut off the pump and
repair it.
(1)Please inspect whether there are abnormal condition or not in the course of raising the pressure.
(2)Please inspect whether the houses and other equipments are leaky or not.
(3)Please inspect whether there is some abnormal noise, rocking and smell or not during the
operation of the motor.
(4)Please inspect whether the temperature of hydraulic oil is too high or not.
3.The inspection after finishing the operation of the pump.
(1)Making sure the pump must be turn down.
(2)Please inspect whether there are leaky or abnormal condition or not. If there is abnormal
situation,please inspect to find the reason and repair it
(3)Please clean it after using the pump.
4.Refer to changing the hydraulic oil
The oil should be replaced once a year principally. If there are following abnormal conditions, please
replace the oil immediately.
(1)If dust mixes with the oil, please replace the oil.
(2)If there is abnormal smell, please replace the oil.
(3)If the water mixes with the oil, the colour of the oil has been changed into milkiness, please
replace the oil.
(4)If the colour of the oil has been changed into black-brown, please replace the oil.
5.The way replacing the hydraulic oil
(1)Please loosen the oil filler port of oil reservoir.
(2)Please take down the screw on the flank of the oil reservoir, let hydraulic oil out.
(3)Please clean the inner and filter of the oil reservoir.
(4)Please install the screw and fill the oil reservoir with the hydraulic oil.
WARNING: If the oil splashes into your eyes, please wash with clean water for at least 15 minutes,
and Then see doctor immediately. If the oil splashes to your skin, please wash it with clean water
and soap.
WARNING: Waste hydraulic oil bellows to industrial waste, it should be dealt with by special
companies.
MAINTENANCE AND INSPECTION