VACUUBRAND RC 5 - Manual (Page 13)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 99 78 31 / 20/12/2006
page 13 of 28
The drive and all bearings are encapsulated and are packed with life-long lubricant.
Under normal operating conditions, the pump is maintenance-free. The valves and
diaphragms are wear parts. Aging of the oil in the rotary vane pump necessitates oil
changes.
Note: Any drop in the pumping speed of the diaphragm pump produces an increase in
pressure in the oil reservoir. Although this does not have a direct effect on the pump-
ing speed and ultimate vacuum attainable by the HYBRID pump, it does have a con-
siderable effect on the aging of the oil and the HYBRID pump’s chemical resistance.
Shutdown:
Has the diaphragm pump been exposed to condensate or was the pump used to
pump vapours?
☞ Allow pump to run on with gas ballast valve initially open, and then with gas ballast
valve closed.
Short-term:
☞ Restart not possible until 2 minutes have elapsed (cool-down phase of start-up
controller).
Long-term:
➨ Drain old oil.
➨ Pour in a small quantity of new oil and briefly operate pump (to flush system).
➨ Drain oil.
➨ Fill pump with new oil.
Before transporting pump, drain condensate from catch pots of separator on inlet
side and oil mist filter from outlet side.
Important: When transporting a pump containing oil, take great care not to tilt the
pump to an angle that would permit oil to make its way into the filter element. Drain oil
if necessary.