VACUUBRAND RC 5 - Manual (Page 10)

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 10 of 28
Use and operation
Method of operation
The RC 5 is a four-stage vacuum pump consisting of an oil-sealed, two-stage rotary
pump with a series-connected two-stage diaphragm-pump. The two units are mounted
on a common shaft and are connected directly to the drive motor. The dry-running
compressor-type diaphragm pump permanently evacuates the oil reservoir of the ro-
tary pump, thus considerably increasing the latter’s maximum vapour inlet pressure
and chemical resistance.
With the gas ballast valve closed, the rotary vane pump shuts off vacuum-tight. This,
in turn, prolongs the intervals between oil changes and improves corrosion resis-
tance. The oil system incorporates an oil pump; this forced-lubrication system ensures
an adequate supply of oil to the pump unit even at high inlet pressures. A mechanical
retaining valve in the oil system prevents oil suck-back into the vacuum system.
The oil mist filter of the rotary vane pump removes 99 % of the oil mist. If an exhaust
waste vapour condenser is fitted (available on request), the vapours handled by the
pump can be condensed to a large extent and either recycled or disposed off in ac-
cordance with regulations.
handle
inlet
outlet
(hose nozzle)
oil mist filter
oil outlet
mains switch
oil inlet
rating plate with
mark Min./Max.
for oil level
manual gas ballast
valve RC 5