Metrohm 940 Professional IC Vario ONE/SeS/PP/Prep 3 - Manual (Page 85)

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5 Operation and maintenance
940 Professional IC Vario ONE/SeS/PP/Prep 3 (2.940.1530)
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NOTE
The maximum treatment time in an ultrasonic bath is 20 s. Ultra-
sonic baths that last longer than this can damage the ruby ball
inside the valve.
The outlet valve has to be replaced if it remains clogged after the
ultrasonic bath.
3 Reinserting the outlet valve into the pump head
￭ Insert the outlet valve into the outlet valve holder (the seal must
be visible) (1).
￭ Screw the outlet valve holder up into the pump head (2) and
tighten it in place using the adjustable wrench (3).
￭ Tighten the connection capillary to the auxiliary piston back onto
the outlet valve holder.
Servicing the inlet valve
Accessories For this step you need the following accessories:
You can find these parts in the accessory kit: Vario/Flex Basic
(6.5000.000).
￭ Adjustable wrench (6.2621.000) from the accessory kit: Vario/Flex
Basic (6.5000.000)