VACUUBRAND RC 5 - Manual (Page 11)

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 11 of 28
☞ The inlet is marked ”IN” and the outlet is market ”EX”.
Caution: Failure to connect the inlet and outlet lines correctly will cause excessive
pressure and the risk of bursting.
☞ Make perfectly sure that the pump is not blocked or sealed on the outlet side and
that no excessive back-pressure can build up on the outlet side.
The pump is supplied dry, in order to ensure that oil cannot make its way from the
rotary vane pump into the housing of the oil mist filter. A can containing 1 litre of rotary-
pump oil is supplied with the pump. Before starting the pump for the first time,
remove the oil filler plug from the top of the rotary vane pump housing and pour in the
oil as described below.
Attention! Because new oil contains gas, a considerable degree of foaming can oc-
cur during operation with new oil, and oil could penetrate the oil separator.
☞ Pour only approx. 400 ml of oil into the pump (bringing oil level to ”min.” mark,
approx.).
☞ Reinstall the oil filler plug and with inlet line closed, operate the pump for approx.
5-10 minutes.
☞ Add approx. 100 ml of oil. As a rule, it is not necessary to use the maximum quan-
tity of oil. Do not overfill!
Note: The pump must be operated in the normal position. 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.
When installing pump in a vacuum system, avoid throttling losses.
☞ Use connecting pipes with large diameter and keep them as short as possible.
☞ Line nominal diameter must be at least equal to that of pump inlet connection.
☞ Reduce the transmission of vibration and prevent loading due to rigid pipelines.
Insert elastic hoses or flexible elements as couplings between the pump and rigid
pipes. Attention: Flexible elements tend to shrink when evacuated.
Protection of the pump and the environment:
☞ Protect pump against foreign matter.
☞ Install isolation valve (see section ”accessories”) for heat-up/run-out phase at inlet
connection.
☞ Prevent backflow of condensate from outlet line into pump.
☞ Prevent release of oil vapours, toxic or hazardous gases:
Install outlet line and dispose of vapours in accordance with regulations, use an
exhaust vapour condenser (available on request).
Make sure the ventilation is adequate if the pump is installed in a housing or if ambient
temperature is elevated (ambient temperature min. 12°C, max. 40 °C).
If a single-phase motor overheats, it is shut down by an embedded thermostatic cut-
out in the winding. Three-phase motors are equipped with a circuit-breaker which
isolates all the poles in the event of an overload.
The pump does not reach its rated pumping speed, ultimate vacuum or max. inlet
pressure for vapour and chemical resistance until it has reached operating tempera-
ture (after approx. 30 minutes).
☞ If necessary, use isolation valve (see section ”accessories”).
☞ Evacuation can commence at any pressure equal or lower than atmospheric pres-
sure.
☞ The pump can operate continuously at any pressure lower than atmospheric pres-
sure. Oil consumption increases at inlet pressures in excess of 100 mbar.
Consequently, check oil level at more frequent intervals.