Teral NSVM 25 Series, Инструкция по установке и эксплуатации

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NSVM, NSVMN
5
7.2 Others (Only for NSVM, NSVMN 25L, 25, 32 series)
Ø For these pumps, it is advisable to open the bypass
valve during start-up. The bypass valve connects
the suction and discharge sides of the
pump, thus making the filling procedure easier.
When the operation is stable, the bypass valve can
be closed.
Ø If the pumped liquids contains air, it is advisable to
leave the bypass valve open if the operating pressure
is lower than 85.32 PSI. If the operating pressure constantly
exceeds 85.32 PSI, the bypass valve must be closed.
Otherwise the material at the opening will be worn because
of the high liquid velocity.