Book 43212455 (11/03)
36
LUBRICATION
Both compressor lubrication and cooling are
accomplished by the compressor lubricating oil.
The oil is forced from the oil storage reservoir,
under system pressure, through an oil cooler
and an oil filter directly to the compressor.
When the compressor is operating at low
capacity, some of the oil may bypass the cooler
through a thermostatically controlled bypass
valve. This valve bypasses varying amounts of
oil, depending upon the temperature, until the oil
being circulated reaches a temperature of 185
°
F
(85
°
C) thus maintaining a higher average oil
temperature thereby reducing the possibility of
water vapor condensation in the oil.
Typical Lubricating and Cooling Oil System
Relatively cool lubricating oil is admitted under
pressure to the compressor bearings and is also
injected in metered amounts, directly to the rotor
chamber. All of the oil thus introduced mixes
with, and passes on with the air being
compressed, thus removing the heat of
compression to a large degree. On its way to
the final discharge connection, the air passes
through a receiver/separator. A scavenger line
returns any remaining separated oil back to the
inlet of the compressor.
Fill the oil storage reservoir in the
receiver/separator with new oil before operating
the unit. Recharge the compressor by first
removing the air filter and pouring about two
gallons (7.57 liters) of oil into the compressor
inlet.
NOTE
Recharging of the compressor with oil is
absolutely necessary on units that have been
placed in extended storage (6 months or more).
Summary of Contents for HP600CMH
Page 8: ...Book 43212455 11 03 8 IMPORTANT SAFETY INSTRUCTIONS ...
Page 9: ...Book 43212455 11 03 9 ...
Page 10: ...Book 43212455 11 03 10 ...
Page 14: ...Book 43212455 11 03 14 fold ...
Page 37: ...Book 43212455 11 03 37 ...
Page 44: ......