Oerlikon Sogevac SV28 BI, Operating Instructions Manual

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2.2 Inlet connection (see chapter 1.1)
The inlet flange can be connected with a vacuum-tight flexible hose and/or
pipe. The pipes should cause no stresses on the pump’s flanges. If necessary,
compensators must be installed.
Restriction of the pipes must be avoided in order not to decrease the pumping
speed of the pump. The nominal diameter of the pipes has to be at least the
same as the diameter of pump’s inlet flange.
When removing condensable vapours, a gas ballast valve must be installed or
opened.
The inlet pressure must not be above atm. pressure.
2.3 Connection to exhaust side
No isolation or restricting devices should be installed in the exhaust line of the
pump. If an exhaust line is installed, it must at least have the same diameter as
the exhaust flange. It should be installed in a manner so that no condensate can
enter the pump (siphon, slope).
Warning: The maximum exhaust pressure must neither exceed 1.15 bar absolute
(0.15 bar relative), nor fall under atmosphere pressure minus 15 mbar.
2.4 Oil filling (see chapter 1.1.4)
The necessary oil is supplied in a can beside the pump. To fill in the oil, unscrew
the oil fill plug and fill in until the oil level reaches the “MAX” mark beside the oil
sight glass.
2.5. Electrical connection (see chapters 1.1.4 and 1.1.5)
The electrical installation may only be conducted by a specialist. Local
regulations have to be followed.
. Voltage and frequency mentioned on the motor nameplate must correspond
with the supply voltage and frequency.
. The drive motor must be protected against overloads according to local
regulations and IEC 60204-1.
. To check the direction of rotation of pumps, flick pump on. If the direction
of rotation is not identical with the one indicated by the arrow sticking on the
motor hood, then inverse any two of the 3 electrical phases in the terminal box.
Looking at the motor fan cover, the direction of rotation has to be counter-
clockwise.
Installation
9 GA02331_002_01 -09/2007 - © Oerlikon Leybold Vacuum
Warning
single-phase connection diagram