5.8 Shut-down
Note:
If the gas-ballast control is open and the motor is switched off for any reason, the pump
drive shaft may rotate in the reverse direction, causing a system pressure rise. To prevent
this, use a gas-ballast control valve (refer to
We recommend, as described in the procedure below, decontaminating the oil before
shutting down the pump; this will prevent damage to the pump by the contaminates in
the oil.
1.
Refer to
To decontaminate the oil on page 31
and decontaminate the oil, as
required.
2.
Close the vacuum system isolation-valve (if not already closed).
3.
Close gas-ballast (that is, turn the gas-ballast control clockwise).
4.
Switch off the electrical supply to the pump.
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A37310880_V - Operation
Summary of Contents for A37315903
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