Gilson PLC 2050, Руководство пользователя

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maintenanCe
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PLC PURIFICATION SYSTEMS
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6. Clean the check valve or replace the check valve with a new one:
a. Clean the check valve by placing it in an ultrasonic bath with methanol or acetone for
approximately five minutes.
NOTICE
ensure that the arrow on the check valve is directed downwards when it is cleaned
in an ultrasonic bath, or damage to the surface quality, the ball and the seat will
occur.
b. replace the check valve. Whether it is for the inlet or the outlet, make sure the arrow is
always directed upwards.
7. tighten the valve housing in the pump head with a 17 mm spanner until you hear a little
crunch, which means that the new check valve is properly seated. this noise corresponds
to the collapsing of the top and bottom membranes.
NOTICE
do not overtighten the valve housing as this could degrade the check valve more
quickly. If a liquid leakage or air bubble is detected, tighten slightly to improve the
sealing.
8. reconnect the tubing. When tightening the SS nut on the outlet check valve housing, use
a 17 mm spanner to hold the housing and keep the suitable tightening.
Figure 65
outlet Valve Housing (top)
outlet Check Valve Placement
Figure 66
inlet Valve Housing (Bottom)
inlet Check Valve Placement