Product Manual

6.3
Maintenance
6.1.3 Air oil separator element (spin on
type)
To disassemble the existing air oil separator
 Switch off and isolate the machine from the service line.
 Vent air oil separator tank pressure and allow the tank
to cool for a few minutes.
 Hold the air oil separator outer shell by the removed
strap belt and rotate it counterclockwise, until it
completely unscrews.
 The hex adapter must be in the air oil separator head
during disassembly.
 Check the recommended life of the air oil separator. If
the recommended life is over, replace it with a new air
oil separator.
Assembly of the new separator
 Ensure the gasket of the separator is not damaged.
 Clean the gasket-seating surface with a clean cloth.
 Apply a thin film of oil on the mating surface of the
gasket.
 Replace the separator and rotate it clockwise by hand.
 Ensure no oil leaks from the mating surface. In case of
leaking, check the gasket.
 After tightening by hand, rotate the separator further by
hand for one and a half rotations.
6.1.4 Oil filter (spin on type)
Disassembly of existing oil filter
 Switch off and isolate the machine from the service line.
 Vent air oil separator tank pressure and allow the tank
to cool for a few minutes.
 Allow it to cool for a few minutes.
 Hold the filter shell by the removed strap belt and
rotate it counterclockwise, until it completely unscrews.
Assembly of new oil filter
 Ensure the gasket of the oil filter is not damaged.
 Clean the seating surface with clean cotton.
 Apply a thin film of oil on the mating surface of the
gasket.
 Replace the oil filter and rotate it clockwise manually.
 After tightening, rotate it further by hand for one and a
half rotations.
 Ensure no oil leaks from the mating surface.
6.1.5 Oil cooler
External cleaning of oil cooler
 Isolate the machine from the service line.
 Vent separator tank pressure before performing
maintenance activities.
 Use compressed air less than 36 psi g (2.5 bar) to clean
the outer surface of the cooler.
 Replace the vent cover.
Internal cleaning of cooler
 Use a 5 percent% (by volume) mixture of caustic soda
in water. Circulate this mixture at 140oF (60°C) in the
cooler for 5 hours. If required, increase the duration of
circulation.
6.1.6 Belt maintenance
The belts must be tensioned regularly in order to avoid
compressor efficiency loss, belt slippage, and belt failures.
The belts are re-tensioned once every 2000 hrs.
To tension the belt:
 Switch off and isolate the machine from the service line.
 Isolate the machine from power supply.
 Unlock and remove the belt guard, rear panel, and
motor side panel.
 Do not tension belts when hot. Let them cool down to
<140°F (60°C) before performing belt maintenance.
Do not burn or dispose of the cotton lint in the cooler fins.
This may lead to deformation of the cooler.
It may also lead to expansion of the cooler joints, resulting
in leakage.
AIR OIL SEPERATOR
OIL FILTER