Sample Valve Heater - ABB PGC2000 Operation And Service Manual

9. Connect the wires from the new heater assembly to the feeder wire pulled through the tubing.
10. Install the new heater assembly using the reverse procedure, pulling the wires through the tubing.

Sample Valve Heater

Sample will spill or leak out during this procedure. Consult MSDS sheets on file at
your location for safety requirements.
Sample valve repair may necessitate the venting of flammable substances into the
atmosphere surrounding the analyzer. Remove power from all sources of ignition
in the immediate area. Do not open any purged enclosures that remain powered.
Ensure proper safety equipment is worn, such as rubber gloves and face shield or
safety glasses.
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 X Purge override function. Do not perform
override until you have read Section 4 completely and you understand and can
perform the procedure properly.
1. Remove power, sample flow, and air from analyzer and allow to cool.
2. Open the Controller front and side doors, and the isothermal oven door.
3. Locate the Zone Sense Board and disconnect the LSV heater and sensor wires.
4. Withdraw the free end of the vaporizer cable from beneath the Card Cage into the Controller
housing.
5. Inside the isothermal oven, loosen any cable clamps securing the vaporizer cable assembly and
free the cable.
6. Disconnect all tubing connections to the LSV in the isothermal oven.
7. Disconnect the air lines from the LSV actuator.
8. Disconnect all tubing connections to the LSV in the isothermal oven.
9. Support the valve with your hand and remove the four Allen screws securing the valve to the
analyzer.
10. Withdraw the sample valve body from the oven.
11. Remove the vaporizer assembly collar from the valve, separate the vaporizer halves, and remove
the vaporizer.
12. Reassemble and connect the vaporizer using the reverse procedure.
8-2
WARNING
CAUTION
2000-OSM, F1