Purging Air From The Solvent Lines Or The Pump Heads; Opening The Drain Valve - Thermo Scientific Surveyor LC Pump Plus Hardware Manual

Purging Air from the Solvent Lines or the Pump Heads

Opening the Drain Valve

Thermo Scientific
 To replace a solvent reservoir filter
1. Unscrew the solvent reservoir filter from the solvent line.
2. Screw the new solvent reservoir filter onto the solvent line, and then insert the line into
the solvent reservoir bottle.
Tip If the solvent line is dry, turn on the pump, attach a syringe to the drain line,
open the drain valve, and then pull solvent into the line by drawing back the syringe
barrel.
3. Draw solvent through the new filter by purging the solvent line.
Tip If air bubbles still accumulate in the solvent line after replacing the solvent
reservoir filter, replace the solvent line.
Use the purge feature when you see air in a solvent line or you suspect the pump heads
contain air.
To purge air from the solvent lines or the pump heads, follow these steps:
1. Opening the Drain Valve
2. Using the Purge Feature
You must open the drain valve before you use the purge feature.
 To open the drain valve
Turn the drain valve knob 180° counterclockwise as shown in
Figure 70. Drain valve in the purge position
Open position
Purging Air from the Solvent Lines or the Pump Heads
Figure 70.
Closed position
DRAIN
Surveyor LC Pump Plus Hardware Manual
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Maintenance
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