R90 - 160N / R90 - 160I / R90 - 160NE / R90 - 160IE
http://www.ingersollrandproducts.com
9
10.0 MAINTENANCE
Coolant filter change procedure
Loosen filter element with the correct tool.
Remove the element from the housing.
Place the old element in a sealed bag and dispose of
in a safe way.
Clean the mating face of the housing.
Remove the new
Ingersoll Rand
replacement
element from its protective package.
Apply a small amount of coolant to the element seal.
Screw the new element down until the seal makes
contact with the housing, then hand tighten a
further half turn.
Start the compressor and check for leaks and check
the coolant level.
Separator element checking procedure
With the compressor running on load, check the
separator differential pressure via the Intellisys controller.
It will be necessary to change the element if the
differential pressure equals zero or exceeds 1 bar
(15 psig).
Separator element change procedure
Remove the fitting that holds the scavenge tube
into the tank and withdraw the tube assembly
Disconnect the piping from the tank cover. Tag the
lines if required. Remove all the capscrews securing
the cover to the tank except the screw opposite
the pivot bolt which should be left engaged by 2-3
threads with at least 6.5mm (0.25”) clearance from
the screw head to the lid. Rotate the jacking bolt
clockwise until the cover lifts off the tank at least
2mm (0.08”) all the way around the tank. The cover
can now be rotated to allow access to inside the
tank.
Carefully lift the separator element up and out of the
tank. Discard the faulty element.
Clean the sealing surface on both the tank and its
cover. Check the tank to be absolutely certain that
no foreign objects such as rags or tools have been
allowed to fall into the tank. Install replacement
element down into the tank after checking the new
element seal/gasket for possible damage. Center the
element up within the tank. Rotate the tank cover
back into position taking care not to damage the
seal/gasket , and locate the cover using 2 capscrews
but do not tighten down.
Completely remove the pivot bolt and tighten
the cover bolts in a cross-pattern to prevent over-
tightening one side of the cover. An improperly
tightened cover will likely result in a leak.
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WARNING
Unscrew the jacking bolt sufficiently to ensure that
the cover can be fully tightened down without im-
parting any stress onto the jacking points. Tighten
down the cover bolts.
Tank cover bolt (M16 size) torque values 200 N-m
(150 ft-lb) Inspect tank scavenge screen and orifice.
Clean if necessary following instructions below.
Install scavenge tube down into the tank until the
tube just touches the separator element and then
raise it 1/8inch (3 mm). Tighten fittings.
Install the regulation lines in their original position.
Start unit, check for leaks, place in service.
RECOMMENDED BOLT TIGHTENING
CROSS PATTERN
Start the compressor and check for leaks and
coolant level.
CAUTION
Do not use any form of sealant on either the separa-
tor tank or the separator tank cover faces.
Separator tank / Pressure system
At 2000 hour intervals, inspect the external surfaces of
the airend and separator tank, including all fittings, for
visible signs of impact damage, excessive corrosion and
abrasions. When changing the separator element inspect
the internal components and surfaces. Any suspect parts
should be replaced before the compressor is put back
into service.
The separator tank should also be tested and inspected
in accordance with any national or local codes that may
exist.
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