Replacement Of Oil Filter Element - Hitachi HISCREW V PLUS NEXT Series Instruction Manual

8. PERIODIC MAINTENANCE [Oil Filter Element]

8.6 Replacement of Oil Filter Element

Oil
Separator
Tank
46
Oil Filter
Element
Close
Open
Oil Pan
① Press the STOP button.
② Disconnect the power.
③ Close the Stop Valve on the discharge side.
④ Open the front door and wait until the oil separator
tank internal pressure gauge reads 0 MPa.
⑤ Remove the front door.
⑥ Place an oil pan to receive lubricant.
⑦ Make sure the level of the oil on the oil level gauge
does not exceed the oil filter element's lower end.
(If the level is higher than the oil filter element's
lower end, drain oil from the oil drain port.)
⑧ Unfasten and remove the oil filter by a tool like filter
wrench.
⑨ Take a gasket of new oil filter element, and spread
lubricant on it, then screw it in the head as before.
⑩ Fasten the element by the hand without use of a tool
like filter wrench.
CAUTION
● If a tool like filter wrench or pipe wrench is
used to fasten the oil filter element, ele-
ment's housing part may be damaged or
deformed, and will cause leak or breaking.
Be sure to fasten it by the hand tightly.
● When the Oil Filter clogged, lubricant sup-
ply to the compressor lessens and dis-
charged air temperature rises.
This makes Discharge air Temperature
Relay to actuate and the compressor even-
tually stops. Also, lubricant feeding to the
bearings becomes insufficient and this may
cause shutdown of the unit.
The HISCREW employs two oil filter elements.
Replace both at the same time.
● Be careful not to bum yourself because
immediately after power off, the oil filter ele-
ments, and surrounding pipes are hot.