Honeywell Apex Technical Handbook page 83

MAN0604_Issue 09_02-2013
2110M8030
(1) At the Certified Sensor remove the cap or accessory.
Rotate the cap/accessory in an anticlockwise direction by 1/4 turn to release the bayonet
fitting and pull off.
(2) If calibrating a sensor with a non-flammable gas cartridge remove the filter, if fitted, from the
sensor cap/accessory and fit it to the Flow Housing.
If fitted, the filter is held in place in the cap/accessory by its three lugs. Carefully prise the filter
free from the lug location points in the cap or accessory.
If calibrating a sensor with a flammable gas cartridge fit the hydrophobic filter supplied with
the Flow Housing into the housing.
In either case, to fit a filter into the Flow Housing, first remove the factory-fitted seal from the
Flow Housing. The seal is held in place in the housing by its three lugs. Carefully prise the
seal free from the lug location points in the housing.
The filter then locates in the Flow Housing in the same way as the removed seal. Ensure that
the filter is placed in the Flow Housing the correct way round with the three lugs closest to the
front face of the housing (where the gas pipes exit) and correctly engaged in the
location points.
4. OPERATION
Filter
Filter
lug location
Filter
Filter
lug location
(3 off)
Sensor body
Lug
(3 off)
Sensor cap
or accessory
Lug
(3 off)
Flow Housing
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Apex