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Technical Description
Starting and Running the Pump
74/140 Dual Stage Rotary Vane Pumps User Manual/ 87-900-937-01(L)
NOTE
Application of an oil trap filter is necessary to avoid pollution of the surrounding
atmosphere by the oil present in the exhaust duct during pump operation.
CAUTION!
Never block the pump exhaust line. This would cause overpressure in the casing
with the risk of breaking the glass window of the level indicator and/or expelling
the oil seal gasket.
Starting and Running the Pump
Before being put into service, in order to reach maximum vacuum,
the pump must be left running for about an hour with the gas ballast
valve open. This will eliminate any humidity from the oil.
WARNING!
The pump is designed for operation with neutral or non-corrosive fluids. It is
absolutely forbidden to use potentially explosive or flammable substances.
NOTE
If the pump is started with cold oil, initially more than normal noise will be
heard; this will last for a few minutes only until the oil reaches its working
temperature.
There are no special instructions for normal operation of the pump,
which is delivered to you after completion of a running-in cycle in the
factory. The maintenance operations for a pump in working
condition may be found on the Scheduled Maintenance Cards.
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