Pfeiffer Vacuum HENA 202 Betriebsanleitung Seite 114

Malfunctions
Problem
Vacuum pump does not
reach the specified final
pressure
Pumping speed of vacuum
pump too low
Loss of operating fluid
Unusual noises during oper-
ation
Tbl. 11:
114/126
Possible causes
● Measurement result dis-
torted
● Vacuum pump or con-
nected accessory conta-
minated
● Operating fluid contami-
nated
● Operating fluid level too
low
● Leak in system
● Vacuum pump is dam-
aged
● The intake line is not suit-
ably dimensioned
● Exhaust pressure too
high
● Operating fluid separator
leaking
● Radial shaft seal ring
(RSSR) leaking
● Exhaust filter saturated or
contaminated
● Exhaust filter and seals
incorrectly assembled
● Operational loss of oper-
ating fluid
● Pumping system is conta-
minated or damaged
● Coupling worn
● Motor bearing is faulty
Troubleshooting for rotary vane pumps
Remedy
● Check the measurement instru-
ment.
● Check the final pressure without
system connected.
● Clean the vacuum pump.
● Check the components for con-
tamination.
● Operate the vacuum pump with
the gas ballast valve open over a
longer period.
● Change the operating fluid.
● Top up the operating fluid.
● Locate and eliminate the leak.
● Contact Pfeiffer Vacuum Serv-
ice.
● Make sure that connections are
short and cross sections ade-
quately dimensioned.
● Check exhaust line outlet open-
ings and exhaust side accesso-
ries.
● Check for leaks.
● Replace the seal as required.
● Contact Pfeiffer Vacuum Serv-
ice.
● Change the exhaust filter.
● Check that the exhaust filter and
seals are fitted correctly.
● Check the oil return in the oper-
ating fluid separator.
● Contact Pfeiffer Vacuum Serv-
ice.
● Contact Pfeiffer Vacuum Serv-
ice.
● Change the motor.
● Contact Pfeiffer Vacuum Serv-
ice.