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6 replacing pilot valves – INFICON Sensistor ILS500F Leak Detection System User Manual

Page 68

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Maintenance Instructions

68

ninp69e1-a (1410)

9.2.6

Replacing Pilot Valves

1

Use small screw driver to loosen the screw holding the valve. You must back the
screw all the way out until you feel it “jumping” in the thread entrance.

2

Push down on the LEDs while pressing the screw down until you feel the locking
mechanism “snap”.

3

Lift the old valve out from the coil side. If the valve does not come off, repeat steps
3 and 4 making sure the screw is completely backed out.

4

Push the screw in while inserting the new valve. Insert the end facing the screw
first and then push the coil side down.

5

Tighten the screw.

6

Replace the cover.

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