VACUUBRAND RZ 8 - 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 90 77 / 17/04/2008
page 13 of 20
Before starting maintenance, isolate the pump from the vacuum system and the elec-
trical supply so that the pump cannot be operated accidentally.
Has the pump been exposed to dangerous or corrosive gases?
Take appropriate safety measures (e. g. safety-clothing and protective goggles) to avoid
inhalation and skin contact.
The pump and the oil may be contaminated with pumped chemicals which have been
pumped, adopt suitable decontamination measures if necessary.
Aging of the oil necessitates oil change in case of darker colour (see new oil), strange
odour of the oil or foreign particles.
Depending on individual cases (especially if corrosive gases or vapours have been
pumped) it may be efficient to check the oil at appropriate intervals.
Under normal operating conditions:
☞ Check oil level every time before starting the pump.
☞ Carry out the first oil change after 100 hours operation time.
☞ Change oil on a yearly basis at the latest.
☞ Dispose of the used oil, which may be contaminated by chemicals, according to all
applicable regulations.
Oil change:
☞ Heat pump to operating temperature before changing oil.
➨ Isolate the pump from the electrical supply and admit air.
☞ Choose suitable pad, oil may drop.
➨ Remove oil drain plug below the rating plate, note O-ring.
➨ Tilt pump and catch oil in a suitable container.
☞ Dispose of the used oil according to the regulations.
➨ Reassemble oil drain plug with O-ring.
➨ To flush the pump, pour in fresh oil (approx. 50 ml) through the pump inlet.
➨ Operate the pump briefly, drain flushing oil and repeat flushing procedure if neces-
sary.
➨ Remove oil filler plug.
➨ Fill in fresh oil through the oil inlet port until oil level reaches mark Max..
➨ Close oil filler plug.
oil inlet
oil outlet
rating plate with marks
Min. / Max. for oil level
inlet
outlet
sight glass for oil level
Oil change