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www.gd-elmorietschle.com
© Gardner Denver Schopfheim GmbH, Gardner Denver Deutschland GmbH
Malfunctions: Causes and elimination
Fault
Cause
Troubleshooting
Important
The machine makes a
abnormal noise
(The blades making
a hammering noise
when starting from
cold is normal if it
disappears within two
minutes as the op-
erating temperature
increases)
The pump housing is worn
(chatter marks)
Repair by manufacturer or
authorised workshop
Elmo Rietschle
Service
Blades are damaged
Repair by manufacturer or
authorised workshop
Elmo Rietschle
Service
Vacuum pump or its oil is too
cold
Note the ambient temperature
and the intake temperature
The lubricating oil is too vis-
cous
The oil viscosity must comply
with ISO VG 32 or 46 as per
DIN ISO 3448
Water in lubricating oil Pump sucks in water
Install water interceptor up-
stream of the pump
—
The pump sucks in more wa-
ter vapour than is suitable for
its water vapour compatibility
Contact the manufacturer for
increased gas ballast
—
Pump only works for a short
time and therefore does not
reach its normal operating
temperature
Let the pump continue to run
with a closed suction side
after extracting the water
vapour until the water has
evaporated from the oil
—
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
Tel. 071 918 60 60, Mail: [email protected]