SVC 4- 8
Remove/Replace TCD Solenoid Switching Valve
HAZARDOUS VOLTAGES ARE PRESENT IN THE INSTRUMENT WHEN THE POWER
CORD IS CONNECTED. AVOID A POTENTIALLY DANGEROUS SHOCK HAZARD BY
DISCONNECTING THE POWER CORD BEFORE WORKING ON THE INSTRUMENT.
1. Set the main power line switch to the off position.
2. Disconnect the power cable from its receptacle.
3. Allow time for the oven and heated zones to cool.
4. When the heated zones are cool, turn off all gas
supplies.
5. Lift the hinged top cover at its front edge,
exposing the detector area.
6. Remove the electronics carrier top cover
(above the signal cable plugs and receptacles
to expose the top edge of the
TCD detector PCB).
7. Remove the right side panel by
removing four screws: two each
along its top and bottom edges.
8. Locate the solenoid valve to
be replaced.
OFF
ON
RED O VISIBLE
SOLENOID VALVE
TO FLOW
BLOCK
TO DETECTOR
TOP COVER
ELECTRONICS
CARRIER TOP
COVER
SCREWS
SCREWS
RIGHT SIDE
PANEL
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