9650 Valve Series
Installation and Maintenance Manual
22
Assembly (Normally closed Valve):
Caution: following ANY valve maintenance it is required to fully test valve operation and to complete FPS valve
automated valve repair check sheet FP081.0.
Note: For all FPS CSA approved normally closed valves requiring closed/proof of closure (POC) limit switch, follow
the steps in Section 4.5 below.
Note: A normally closed valve blocks flow through the valve when no instrument air or electrical signal is being sent
to the solenoid. It will fail closed in this configuration. FPS normally closed valves will have one of the following
numbers as the last digit in their item code. For example item code 9650-xxx-xxx-xxx-xxx0 is for a normally closed
valve with no approvals.
Last Digit
Service Requirements
0
No Approval – Normally Closed
2
CSA Gas Safety Shutoff Valve – Normally Closed
4
Steam – Normally Closed
5
FM Safety Vent Valve – Normally Closed
8
FM/CSA Savefy Vent Valve – Normally Closed
1)
Ensure the same model of limit switch is used in reassembly.
2)
Apply Masters Orange T-Tape thread sealant or similar to the cleaned conduit elbows before installing in the
limit switch.
3)
Ensure field wire connections in the terminal block are landed on the correct terminals as removed in step 4).
Refer to figure no. 1.
4)
Follow disassembly steps 4) to 6) in reverse for installation of the replacement limit switch. Do not install the
cover in this step.
5)
Connect instrument air supply to the solenoid and apply power to stroke the valve open.
6)
Set the open (upper) limit switch cam by rotating it until the limit switch makes. Monitor the output of the open
limit switch with a multimeter between terminals 1 and 2. There should be continuity when the limit switch is
made.
Note: Color of limit switch cams can be different to illustrations and does not indicate open or closed limit switch.
Upper cam/limit switch is always open and lower cam/limit switch is always closed.
