Ingersoll-Rand P250WJDU, Operating & Maintenance Manual

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Operating & Maintenance Manual Maintenance
44 Book: 22904767 (6/06) Rev. A
down of the unit. To correct this situation it
will be necessary to clean it using a cleaning
compound in accordance with the
manufacturer’s recommendations.
Compressor Oil
The lubricating and cooling oil must be
replaced every 500 hours of operation or six
(6) months, whichever comes first.
Receiver-separator Systems
WARNING
!
High pressure air can cause severe
injury or death from hot oil and flying
parts. Always relieve pressure before
removing caps, plugs, covers or other
parts from pressurized air system.
• Open service valve at end of machine.
• Ensure pressure is relieved, with BOTH:
— Discharge air pressure gauge reads
zero (0).
— No air discharging from service valve.
When draining oil, remove plug from the
separator tank drain fitting.
When adding oil, remove and replace (make
tight) plug on side of separator tank.
In the compressor lubricating and cooling
system, separation of the oil from the
compressed air takes place in the receiver-
separator tank. As the compressed air enters
the tank, the change in velocity and direction
drop out most of the oil from the air.
Additional separation takes place in the oil
separator element which is located in the top
of the tank.
Any oil accumulation in this separator
element is continuously drained off by means
of a scavenge tube which returns the
accumulated oil to the system.
The life of the oil separator element is
dependent upon the operating environment
(soot, dust, etc.) and should be replaced
every twelve months or 2000 hours. To
replace the element proceed as follows:
• Ensure the tank pressure is zero.
• Disconnect the hose from scavenge tube.
• Remove scavenge tube from tank cover.
• Disconnect service line from cover.
• Remove cover mounting screws.
• Remove cover and element.
• Remove any gasket material left on cover
or tank.
• Install new element.
NOTICE
Do not remove staples from
the element/gasket
connection.
• Place a straightedge across top of element
and measure from bottom of straightedge
to bottom of element (See Fig. 4.1).
• Replace scavenge tube in cover (cover is
still off of tank).
• Measure from bottom of cover to end of
scavenge tube. Measurement should be
from 1/8” to 1/4” less than the element
measurement. If not, cut to size.
• Remove scavenge tube.
• Reposition cover (use care not to damage
gaskets).
• Replace cover mounting screws: tighten in
a crisscross pattern.
• Reconnect service line. Replace scavenge
tube. Reconnect hose.
• Close service valve. Start unit and look for
leaks.