Installation
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300407956_002_C1 - 01/2017 - © Leybold
Mounting the adapter on the LEYVAC
C- and CC-type pumps:
Firstly remove the cover and the housing lid.
When fitting the adapter onto the LEYVAC, ensure that the O-ring will not
slip.
Place the O-ring on the inlet of the LEYVAC and bolt the adapter onto the
pump, tightening torque 50 ± 5 Nm.
C- and CC-type pumps:
Re-fit the housing lid,
before
mounting the
RUVAC.
Mounting the RUVAC
When fitting the RUVAC onto the adapter, ensure that the gasket will not slip.
Place the O-ring in the adapter groove and attach the RUVAC to the adapter,
Push the studs through the flanges and secure both ends with the nuts,
tightening torque 50 ± 5 Nm.
After fitting the adapter, we recommend conducting a leak search. For com-
missioning the pump combination please note the information given in the
Operating Instruction for the RUVAC.
3.7.2 Non-return Valve and Silencers
The non-return valve is a fitting for shutting off which is attached to the
ex haust flange for the LEYVAC. It prevents gas from flowing back into the
pump.
If the pump is to be connected directly to the exhaust piping, we recommend
the use of a spring-loaded valve which can be mounted in either direction.
For extremely dusty processes, we recommend the use of a self-cleaning
ball-type valve. This must
only
be mounted vertically.
The standard silencer comes with a built-in non-return valve which operates
both vertically and horizontally.
For processes involving much condensate there are two options for fitting the
silencer. All silencers may be fitted vertically
only
in combination with a drain-
able elbow (cf. Section 1.4).
With a horizontal version the supplied elbow can be used; in this case the
serviceable silencer
must
be attached, to ensure that the ball valve is the
lowest point of the exhaust system.
