Original Operating Instructions V-VGA / V-VGC - Elmo Rietschle
Original Operating Instructions V-VGA / V-VGC - Elmo Rietschle
Original Operating Instructions V-VGA / V-VGC - Elmo Rietschle
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Malfunctions: Causes and elimination<br />
Fault Cause Troubleshooting Important<br />
The vacuum pump<br />
produces a abnormal<br />
noise<br />
(The blades making<br />
a hammering noise<br />
when starting from<br />
cold is normal if it<br />
disappears within<br />
two minutes as the<br />
operating temperature<br />
increases)<br />
Water in lubricating<br />
oil<br />
The pump housing is worn<br />
(chatter marks)<br />
26 | www.gd-elmorietschle.com © Gardner Denver Schopfheim GmbH, Gardner Denver Deutschland GmbH<br />
Repair by manufacturer or<br />
authorised workshop<br />
Blades are damaged Repair by manufacturer or<br />
authorised workshop<br />
Vacuum pump or its oil is too<br />
cold<br />
The lubricating oil is too viscous<br />
Note the ambient temperature<br />
and the intake temperature<br />
The oil viscosity must comply<br />
with ISO VG 46 as per DIN<br />
51519<br />
Pump sucks in water Install water interceptor upstream<br />
of the pump<br />
The pump sucks in more water<br />
vapour than is suitable for<br />
its water vapour compatibility<br />
Pump only works for a short<br />
time and therefore does not<br />
reach its normal operating<br />
temperature<br />
<strong>Elmo</strong> <strong>Rietschle</strong><br />
Service<br />
<strong>Elmo</strong> <strong>Rietschle</strong><br />
Service<br />
Section 2.3<br />
Section 7.2.2<br />
—<br />
Contact the manufacturer for<br />
increased gas ballast —<br />
Let the pump continue to run<br />
with a closed suction side<br />
after extracting the water<br />
vapour until the water has<br />
evaporated from the oil<br />
Please contact <strong>Elmo</strong> <strong>Rietschle</strong> Service for other malfunctions or those that cannot be eliminated.<br />
—
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