Emerson Rosemount 700XA Reference Manual page 142

Operation and maintenance
June 2022
Remove the micro flame photometric detector
photomultiplier tube (µFPD PMT) module
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.
WARNING
Burns
Some parts of the analyzer may be heated to 248 °F (120 °C).
To prevent burns, do not touch any of the hot parts. All parts of an analyzer are always hot
unless it has been switched off and allowed to cool down.
Before fitting, removing, or performing any maintenance on the analyzer, make sure
that it has been switched off and allowed to cool for at least two hours.
When handling the analyzer, always use suitable protective gloves.
These precautions are particularly important when working at heights.
If burned, seek medical treatment immediately.
Tools required
• 7 ⁄64-in. Allen wrench
• Phillips screwdriver
• Flathead screwdriver
Procedure
1. Disconnect all power to the unit. Allow at least 10 minutes for the components to
2. Remove the explosion-proof dome and the thermal hood.
142
cool-down.
Reference Manual
2-3-9000-744
Emerson.com/Rosemount