Tp 18: Sample Valve Actuation Air - ABB PGC2000 Operation And Service Manual

1. Disconnect the cell vent and hold a reflective surface such as a mirror, wrench or other suitable
object at such an angle that you can see the reflective surface.
2. If the flame is ignited, you will be able to see the condensed water vapor form on the reflective
surface.

TP 18: SAMPLE VALVE ACTUATION AIR

It is the customer's responsibility to ensure that the area is safe and and hazard-
free, and will remain so the entire time the analyzer is open. This responsibility
includes ensuring adequate ventilation in analyzer shelter and obtaining proper
work permits, etc.
See "AIR PURGING" in Section 4 for the override function. Do not perform
override until you have read Section 4 completely and you understand and can
perform the procedure requirements.
1. Check valve assignment in method tables.
2. Verify actuation air is being applied to the sample valve. Gently loosen the two 1/8 inch fittings at
the actuator. Apply "Leak Tech", "Snoop" or other similar liquid leak detector to the back of the
fittings.
3. From the background screen turn on valve 1. The outside actuation tube fitting should produce
bubbles. Turn off valve 1. The bubbles should now be produced on the inside fitting.
4. If no air is present, check to ensure air is being applied to solenoid valve by loosening the
solenoid air supply inlet connection and test for the presence of air with a leak detection solution.
If air is applied to the solenoid valve, test to ensure that the solenoid actuation voltage is being
applied.
5. Turn off purge air to analyzer.
6. Open the Controller front door.
7. Connect voltmeter leads across DC Solenoid Driver PCB S1 terminals 1 and 2. From the
Background screen operate valve 1. The voltage to the 4-way solenoid valve should measure
110 Vdc when the valve is on and zero Vdc when the valve is off.
8. If the voltage is being applied, yet the valve is not switching, replace the solenoid valve.
9. If no voltage is present, remove power and disconnect both solenoid valve leads from S1
terminals 1-2.
10. Apply power and repeat step 7.
11. If no voltage is present, check the AC voltage to the DC Solenoid Driver PCB. Adjust the
voltmeter to read 120 Vac.
12. Connect voltmeter leads between J9 terminals 1 and 2. If voltage is present, proceed to step 15.
13. If 120 Vac is not present, check the voltage at Solenoid #1 VAC J9A terminals 1 and 2. If voltage
is present at J9A terminals 1 and 2, check the connections at both ends of the cable connecting
J9A and J9.
2000-OSM, F1
CAUTION
7-9