KCP Heavy Industries Co., Ltd. Maintenance
7-12
7.7 Filter change
This maintenance describes how to change all the filters in the hydraulic system.
7.7.1 Checking Filters
You will find the service intervals in the maintenance summary at the start of this section.
All filter housings are equipped with indicators. Each indicator has green and red zone.
When the needle is in the red zone, the filter needs to be replaced.
► Insure that the hydraulic tank is pressurized with .8 bar of air.
► Hydraulic fluid has to be at operating temperature (40 C to 65 C).
► Set pump to maximum RPM.
► Check indicators. If the filters indicators are green or in the green zone the filters
are OK.
7.7.2 Preparation
The following tasks must be carried out before starting the filter change:
► Switch off the remote control.
► Switch the drive engine off.
► Reduce fluid and air pressure to zero.
► Secure the system against unauthorized starting – if you have any keyed switches,
remove the key and disconnect the voltage supply.
► Secure your working area and fix notices to the blocked controls and setting devices.
Danger
Dump the accumulator and air pressure in the hydraulic tank.
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Note ___________________________________________________________________
You must never attempt to clean Micronics filter elements. You must always replace them.
Before you fit the new filters, you must check that no O-rings and other sealing elements
are damaged.
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