Honeywell Apex - Changing the Certified Sensor

95
MAN0604_Issue 09_02-2013 Apex
2110M8030
(14) RetthecaporaccessorytotheCertiedSensor.
Reverse the removal procedure.
(15) Check that the system is working correctly.
Use the Calibration Menu => Gas Challenge menu option to check correct operation of the
unit in the presence of the gas being sensed without triggering alarms, etc. (see Chapter 4).
Apply gas using a gas test module.
(16) Return the system to normal operation.
5.2.3 Changing the Certied Sensor
TheCertiedSensormaybemountedinaTransmitterUnitor
   remotelyinaCertiedJunctionBox.Whenreplacing
   certiedcomponentsalsorefertotheControlDrawings
(see Appendix B).
   ToreplaceaCertiedSensorttedtoaTransmitterUnitora
   CertiedJunctionBoxcarryoutthefollowingprocedure:
    Caution: EnsurethattheTransmitterUnit/Certied
    JunctionBoxamepathisnotdamagedduring
    thisprocedure.Theamepathisformedbythe
    matingsurfacesoftheTransmitterUnit/Certied
    JunctionBoxtopandbase(seethecomponent
diagrams in Chapter 3).
(1) Isolate all associated power supplies and ensure that they remain OFF during this procedure.
Ensure a gas free atmosphere.
Transmitter Unit
top
Top fixing screw
(3 off)
o
Certified Junction
Box top
Metal
retaining
cable
Metal retaining
cable
(2) DetachtheTransmitterUnitorCertiedJunctionBoxtop.
Unscrew the three captive M8 hexagon key bolts underneath the base. Lift the top clear.
For the Transmitter Unit only lift the top clear of the locating pins.
5. MAINTENANCE