Ssov Proof Of Closure Switch Check - Watts AERCO Benchmark OMM-0136 Operation And Service Manual

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING

5.9 SSOV PROOF OF CLOSURE SWITCH CHECK

The SSOV, shown in Figure 5-9, contains the Proof of Closure switch. The Proof of Closure
switch circuit is checked as follows:
SSOV Proof of Closure Switch Check Instructions
1. Set the Controller's Enable/Disable switch to Disable.
2. On the Controller, go to: Main Menu → Diagnostics → Manual Run, and then put the unit
in Manual Mode.
3. Set the valve position between 25% and 30% using the + (Plus) and – (Minus) controls.
4. Remove the cover from the SSOV by loosening the screw shown in Figure 5-9. Lift off the
cover to access the terminal wiring connections.
5. Disconnect wire #148 from the SSOV to "open" the Proof of Closure switch circuit.
6. The unit should fault and display SSOV Switch Open.
7. Replace wire #148 and press the CLEAR button.
8. Set the Controller's Enable/Disable switch to Enable to start the unit.
9. Remove the wire again when the unit reaches the purge cycle and Purging is displayed.
10. The unit should shut down and display SSOV Fault During Purge.
11. Replace the wire on the SSOV and press the CLEAR button. The unit should restart.
OMM-0137_E • GF-211 •
12/13/2019
SSOV
ACTUATOR
COVER
Figure 5-9: SSOV Actuator Cover Location
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
ACTUATOR
COVER
SCREW
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