Action
Step
Unscrew the lower check valve using an adjustable wrench.
7
WARNING
Hazardous substances. When using hazardous
chemicals, take all suitable protective measures, such
as wearing protective clothing, glasses and gloves re-
sistant to the substances used. Follow local and/or
national regulations for safe operation and mainte-
nance of the product.
8
Immerse the valves completely in methanol and place them in an ultrasonic
bath for a few minutes. Repeat the ultrasonic bath with deionized water.
Refit the check valves.
9
Tighten the nut until fully finger-tight and then use the adjustable wrench
to tighten a further 90 degrees.
10
Refit the inlet manifold and reconnect the tubing to the pump head.
11
ÄKTA avant Operating Instructions 29101556 AB
175
7 Maintenance
7.5 Clean pump head check valves
