Description
16
130001398_002_C0 - 09/2016 - © Leybold
The pressure balance valve will not protect the pump from thermal over-
load if opened continuously.
1.1.4 Lubricants
RUVAC WH/WHU pumps described here are, as standard, prepared either
for operation with synthetic oil or the special lubricant perfluoropolyether
PFPE). Other types of oil (white oil, for example) upon request.
If synthetic oil and PFPE come into contact with each other they will emul-
sify. That’s why the pumps must only be run with the type of lubricant
specified for the pump. If you want to change the type of lubricant please
contact Leybold.
1.2 Standard Specification
RUVAC WH/WHU are supplied for vertical flow.
WH/WHU 4400 and 7000:
Before delivery the oil has been drained out. The
quantity of synthetic oil or PFPE which is required for operation, is supplied
separately with the pump..
WH/WHU 2500:
The pumps are filled with synthetic oil or PFPE.
All pumps are equipped with an intake screen in their intake flange and have
been vented with nitrogen to protect the pump against corrosion. The flanges
have been sealed off with adhesive foil.
The RUVAC WH 2500 pumps with an internal frequency converter are
supplied together with the frequency converter. RUVAC 2500 pumps intend-
ed for operation with an external frequency converter are supplied without
the frequency converter but with a 30 m long connecting cable for the built-in
Pt 1000 temperature sensor.
NOTICE
NOTICE
