Oerlikon 10926, Operating Instructions Manual

Page: 34 / 44

34 GAET02307_002_10 - 06/2008 - © Œrlikon Leybold Vacuum
Troubleshooting
Fault Possible cause Remedy Reference
section *
Oil in intake line Oil comes from the vacuum system. Check the vacuum system.
or in vacuum Anti-suckback valve is obstructed. Clean or repair the valve. 5.4-G
vessel. Sealing surfaces of anti-suckback valve Clean or repair the intake port and valve. 5.4-G
are damaged or dirty.
Oil level is too high. Drain the excess oil. 5.4-B
Pump’s oil Exhaust filters are clogged or damaged. Replace the filters. 5.4-C
consumption too Nozzle of float valve is clogged. Check the valve, clean the nozzle. 5.4-I
high, oil mist at Oil level is too high. Drain the excess oil. 5.4-B
exhaust.
Oil is turbid. Condensation. Degas the oil or change the oil and clean 4.1/5.4-B
the pump.
Precaution: open the gas ballast valve or
insert a condensate trap.
Clean the gas ballast intake filter. 5.4-G
Pump is Oil level is very low Add oil. 5.4-B
excessively noisy. (oil is no longer visible).
Oil filter is clogged. Change the oil and filter. 5.4-B
Coupling elements worn Install new coupling element 5.4-J
Large vacuum leak in system. Repair vacuum leak. 5.4-J/K
* Reference section: This coluum refers to the section in the Operating Instructions that contains the applicable repair information.
1) Bubble test : Let the pump run at operating temperature with degassed oil, without gas ballast and with closed intake port.
Immerse the exhaust line in a bucket of water. If a steady stream of bubbles appear, the pump has an external leak.
NB: For any other operation as described before, return the pump to a Œrlikon Leybold Vacuum service center.
Never mount used seals. Always mount new seals.