7.5
Clean pump head check valves
Introduction
Clean the check valves when required, for example if particles like dust or salt crystals
in the check valve cause irregular or low flow. The cleaning procedure is the same for
the system pumps and the sample pump.
Required material
The following materials are required:
•
Adjustable wrench
•
100% Methanol
•
Distilled water
•
Ultrasonic bath
Instruction
Follow the instructions to remove and clean the pump head check valves.
Action
Step
Before taking the check valve apart, always try to clean the check valves by
priming the pump heads first with distilled water, then with 100% Methanol
and then with distilled water again.
1
Switch off the instrument.
2
Disconnect the tubing from the pump head and disconnect the pump inlet
tubing. Disconnect the tubing of the pump rinsing system.
3
ÄKTA avant Operating Instructions 29101556 AB
173
7 Maintenance
7.5 Clean pump head check valves
