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Cause
Oil is unsuitable.
Remedy
Change the oil. Refer to
Cause
Oil cycle is obstructed.
Remedy
Clean or repair the oil lines and channels.
Fault
Oil in the intake line or the vacuum vessel
Cause
Oil comes from the vacuum system.
Remedy
Check the vacuum system.
Cause
Anti-suck back valve is obstruction.
Remedy
Clean or repair the valve. Refer to
Clean the intake port dirt-trap and anti-suck back
on page 46.
Cause
Sealing surfaces of anti-suck back valve is damaged or dirty.
Remedy
Clean or repair the inlet port and the anti-suck back valve. Refer to
port dirt-trap and anti-suck back valve
Cause
Oil level is too high.
Remedy
Drain the excess oil. Refer to
on page 43.
Fault
Oil is turbid
Cause
Condensation
Remedy
-Degas the oil or change the oil and clean the pump. Refer to
on page
44.
-To prevent condensation open the gas ballast valve or insert a condensate trap.
Fault
Pump is excessively noisy
Cause
Oil level is very low (Oil is no longer visible).
Remedy
Add oil. Refer to
Cause
Silencing nozzle is clogged.
Remedy
Clean or replace the silencing nozzle.
Cause
Intake pressure is too high.
Remedy
Lower the intake pressure.
Cause
Coupling element is worn.
Remedy
Install new coupling element. Refer to
Check the coupling and coupling element
page 47.
Cause
Vanes, bearings or other pump parts are damaged.
Remedy
Repair the pump. Contact Service.
300956027_002_A0 - 03/2022 - © Leybold
54
Fault finding
Содержание 1019040V00
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