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5
CI Maintenance
To Minimize Rotary Vane Foreline Pump
Damage from Ammonia
Air ballasting for an hour every day removes most of the ammonia from the
pump oil. This will greatly increase the life of the pump.
Only perform this procedure if the pump is at normal operating temperature.
C AU T I O N
The water vapor in air can cause condensation of the ammonia at the ballast
valve if the pump is cold.
The pump may be dangerously hot. Wear insulating gloves before you touch it
WAR N IN G
or the ballast valve.
Procedure
1 Turn the ballast valve on the foreline pump
Ballast valve
Figure 16.
2 Leave the ballast valve open for one hour. You can continue to run samples
86
aligned. The sound of the pump will get much louder.
Minimizing ammonia damage
while the pump is ballasting.
7250 Accurate-Mass Q-TOF Troubleshooting and Maintenance Manual
(Figure
16) until the 1s are
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Troubleshooting
