MMD Equipment 185S-5C2 part 2 - Manual (Page 8)

5. Periodic Inspection/Maintenance
5-8
W010
5.5.5 Change compressor oil
[At 300 hours for the first change and at every 500 hours thereafter]
When you refill the separator receiver tank with compressor oil,
stop the engine, and make sure that the pressure gauge indicates
0MPa and there is no residual pressure in it, and then gradually
loosen the oil filler cap for refilling oil.
Note residual pressure in the receiver tank could force both
extremely hot compressed air and oil to jet out and you may be
scalded or seriously injured.
Even continuous oil replenishment cannot improve its deteriorated
condition. Be sure to change the oil completely at every scheduled interval.
Do not mix it with other brand oil, or it will cause poor performance and shorten the life of the compres-
sor oil. (But fresh compressor oil could accept a mixture of small amount of different brands.)
Running the unit with old and deteriorated compressor oil will cause damage to bearings, or serious ac-
cident like ignition in a separator receiver tank. Be sure to change the oil completely at every scheduled
interval.
Follow the designated regulations to dispose of compressor oil.
＜ Procedure＞
① Remove the oil filler cap“1”of separator receiver
tank.
② Open drain valve“2”to discharge waste oil from the
tank.
③ After removing drain plug“3”of oil cooler, open drain
plug“4”provided inside and also dispose of condensed
oil and water from oil cooler.
④ Completely discharge all the oil left separator re-
ceiver tank, pipes and oil cooler. If wasted oil is left
in the unit, this residual oil will greatly shorten the
life of the newly replenished oil.
⑤ Be sure to close drain valves“2”,“4”and close the
drain plug“3”after the used oil is completely dis-
charged.
⑥ Fill the designated quantity of new oil through the
oil filler port. [Quantity of oil：approx.3.96gal.(15L)]
⑦ After oiling, tighten the cap“1”in its place while
paying attention not to let dust get in the tank.
⑧ Start the engine for a short while, then replenish the
oil to fill shortage. Repeat this procedure for 1 to 2
times to check if the oil level has reached its appro-
priate point. Be careful not to overfill the oil.
When changing compressor oil, drainage takes a
longer time if oil is cold. But it is absolutely neces-
sary to drain compressor oil completely without fail.
1
Refilling of compressor oil
A100108
Separator
Receiver tank
4 3
2
A100109