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Replace the Pump Drive (Quaternary and Flexible Pumps)
Remove the Pump Head Assembly
Replace the Pump Drive (Quaternary and Flexible Pumps)
When If the pump drive is damaged
Parts required # p/n Description
1 G4220-60100 Pump Drive, Channel A
OR 1 G4220-60250 Drive Unit Channel A Pendulum
1 5043-0887 Pump Drive Fastener
1 G4204-81601 Cables for Pump Drive Motor 1290 Infinity Quaternary Pump
1 G4204-81602 Cables for Pump Drive Encoder 1290 Infinity Quaternary Pump
Preparations • Bring the pump drive to its maintenance position and remove the pump head.
• Remove the top cover and foam.
• Remove the main board and middle layer foam part.
Damage of the pump piston
Removing pump heads in a position other than the maintenance position can damage the
pump piston.
➔
Before switching off the pump, bring it to the maintenance position.
1
If required for replacement, unplug pump drive encoder cables
and disconnect the cable for the pump drive motors.
2
Lift up the pump drive assembly from the rear.
Next Steps:
3
Insert the new pump drive and connect cables for the encoders and drives. Route encoder cables through the lower level foam part
as indicated above.
4
Reinstall the middle layer foam.
5
Reinstall the main board and reconnect all cables.
6
Reinstall the top foam, the top plate, and the top cover.
Encoder cables
Motor cables
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