Emerson Rosemount 700XA Reference Manual page 124

Operation and maintenance
June 2022
7. Reconnect the gas tubings.
8. Replace the thermal cover and explosion-proof dome.
9. Apply power to the GC.
Remove the flame ionization detector (FID)
The FID has no replaceable parts. If it has damage (such as as broken resistance
temperature device [RTD] or igniter coil) you will need to remove and replace the FID.
WARNING
Explosion
Failure to de-energize the analyzer may cause an explosion and severely injure personnel.
Before opening the analyzer, disconnect all electrical power and ensure that the area is
free of explosive gases.
Keep cover tight while circuits are live.
Use cables or wires suitable for the marked "T" ratings.
Cover joints must be cleaned before replacing the cover.
Conduit runs to the enclosure must have sealing fitting adjacent to enclosure.
124
f) Thread the thermistor through the retainer nut.
g) Screw the retainer nut back into the TCD block.
Ensure a tight fit (quarter turn after finger tight); otherwise a potential leak
path might open.
h) Reconnect the thermistor leads to the termination block, taking care to
reconnect the thermistor leads to the corresponding terminal block screws.
Note
The thermistors are a matched pair (2-5-1611-003) and must be replaced as such.
Repeat Step 6 for each thermistor in a pair.
Note
Tighten the block screws with a torque wrench to 20 in.-oz.
Make sure tubing is properly seated and reattach the TCD housing with the four
screws.
Reference Manual
2-3-9000-744
Emerson.com/Rosemount