Oil Leaks Out Of Air Filter; Full; Safety Relief Valve Blows Off; Oil Inside The Unit - KAESER SM 8 Service Manual

11.2.4

Oil leaks out of air filter

Possible cause:
Oil level in separator tank is too high.
Inlet valve faulty.
11.2.5 Full -- load/Idle sequence occurs too frequently (short cycles)
Possible cause:
Receiver tank size is too small or there
is no tank.
Diameter of hose connecting the unit
to the receiver tank is too small.
Minimum pressure check valve leaks.
Flow is restricted at discharge.
11.2.6

Safety relief valve blows off

Possible cause:
System does not discharge at idle.
Oil separator cartridge is contamina-
ted.
Minimum pressure check valve does
not open.
Safety relief valve not properly sized
for the pressure of the compressor
unit.
11.2.7

Oil inside the unit

Possible cause:
Socket is still in the hose coupling at
the separator tank.
Safety valve has blown off.
Oil is coming out of air filter.
Hose coupling on separator tank is
loose.
Oil cooler leaks.
Appendix
Remedy:
Drain oil to correct level.
Find the fault and replace the defective
part.
Remedy:
Consult authorized KAESER distributor
for recommended tank size.
Connecting hose diameter should not
be smaller than the air discharge pipe
diameter. Install larger hose if neces-
sary.
Check the valve and replace defective
parts.
Look for plugged filters, partially
closed valves, frozen pipes or malfunc-
tioning pressure regulators.
Remedy:
Make sure ball valve in vent line is
open. Check the control lines, inlet
valve and combined control/vent valve.
Replace defective parts as needed.
Check the cartridge pressure differen-
tial and replace cartridge if necessary.
Check the valve for blockage and re-
place defective parts as necessary.
Check blow ---off pressure and com-
pare to name plate of the compressor.
Replace if necessary.
Remedy:
Remove the socket from the coupling.
See chapter 11.2.5.
See chapter 11.2.4.
Tighten coupling or replace as
needed.
Replace oil cooler.
11 --- 69