Replacement Of Oil Filter Element - Hitachi HISCREW 2000 Series Instruction Manual

8.7 Replacement of Oil Filter Element

Oil Case
Head
Oil Filter Element
Close
Open
Saucer
8. PERIODIC MAINTENANCE [Oil Filter Element]
q Press the STOP button.
w Turn the POWER OFF.
e Close the Stop Valve on the discharge side.
r Wait for the inner pressure of the compressor
depressurized to the level of ambient air.
t Place a saucer to receive lubricant.
y Check the oil level gauge for oil level. If it is
higher than the oil filter element's center, re-
move the oil from the oil case as required.
u Unfasten and remove the oil filter by a tool
like filter wrench.
i Take a gasket of new oil filter element, and
spread lubricant on it, then screw it in the
head as before.
o Fasten the element by the hand without use of
a tool like filter wrench.
If a tool like filter wrench or pipe wrench
is used to fasten the oil filter element,
element'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
supply to the compressor lessens and
discharged air temperature rises.
This makes Discharge Temperature Re-
lay to actuate and the compressor even-
tually stops. Also, lubricant feeding to
the bearings becomes insufficient and
this may cause shutdown of the unit.
Be sure to change oil filter element peri-
odically.
CAUTION
49