MMD Equipment 400S-6B1 - Manual (Page 37)

5. Periodic Inspection/Maintenance
5-7
5.6.5 Change Compressor Oil
Refilling of compressor oil
When you refill the separator receiver tank with compressor oil,
stop the engine, and make sure that the pressure gauge
indicates 0psi ( 0bar ) 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. W010
Do not mix compressor oil
Be sure to use recommended oil listed below.
Viscosity of the oil varies depending on the temperature and other environmental conditions.
Select one from the recommended oil listed below.
Maker and Brand of Recommended Oil
Maker Brand
HULS ANDEROL 3032
MOBIL RARUS SHC 1024
TEXACO SYN-STER DE32
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
compressor 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
accident like ignition in a separator receiver tank. Be sure to change the oil completely at every
scheduled interval.
(Procedures)
① Remove the oil filler cap“2”of separator receiver tank“1”.
② Open drain valve“3”to discharge waste oil from the tank.
③ In case of replacement, completely discharge all the oil left
in the compressor body, separator receiver tank“1”, 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.
④ Be sure to close drain valve“3”after the wasted oil is
completely discharged.
⑤ Fill the designated quantity of new oil into the oil filler port.
⑥ After oiling, tighten the cap“2”in its place while paying
attention not to let dust get in the tank.
⑦ Start the engine for a short while, then replenish the oil to
fill shortage. Repeat this procedure for 2 to 3 times to check
if the oil level has reached its appropriate point. Be careful
not to overfill the oil.
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