Waters GCT Premier - Rotary Pump Maintenance; Gas-Ballasting the Rotary Pump

Rotary pump maintenance 10-5
Rotary pump maintenance
Rotary pump:
Gas-ballasting the rotary pump
When the rotary vacuum pump draws large quantities of solvent vapors, the
vapors tend to condense in the pump oil and reduce pump efficiency.
Gas-ballasting purges condensed contaminants from the oil.
Gas-ballast the rotary pump on a weekly basis, or when any of the following
conditions apply:
• If the pump oil appears cloudy.
• If the vacuum pressure is higher than normal.
• If condensate forms in the rotary pump exhaust line.
• When changing the rotary pump oil.
• After CI or DCI operation.
Oil filler plugs Gas-ballast
control
Inlet port
O
il level
s
ight glass
O
il drain plug
Power switch