Maintenance; General; Cleaning - Honeywell 705 Operating Instructions Manual

MAN0364.P65 Issue 03, Mar 01
00705M5003

4.1 GENERAL

Maintenance consists of cleaning the sensor and accessories,
replacing the gasket and Hydrophobic Barrier and gassing
the sensor when testing the system.
1.
2.
3.
In the event of exposure to contaminant or prolonged
exposure to high concentration of gas, the sensor should be
operated for 24 hours in a clean environment and then
recalibrated.
Note:

4.2 CLEANING

The sensor and accessories may be cleaned using an
industrial grade of methanol. Whenever cleaning takes place,
a new Hydrophobic Barrier must be fitted and the following
precautions must be observed:
a.
b.

4. MAINTENANCE

The ECC cell contains a small quantity of acid. When
disposing of a sensor, it is necessary to comply with
the current waste disposal regulations, either local
or national ECC TYPE SENSORS SHOULD NEVER
BE DISPOSED OF BY PLACING IN A FIRE.
Exposure to gas concentrations above the design
range may result in the sensor needing re-calibrating
or checking.
Dismantling of a sensor or a sensor installation by
other than authorised engineers invalidates
certification.
If the sensor is found to be faulty, or cannot be
calibrated, the complete sensor must be discarded
and replaced.
Isolate the power supply from the sensor by withdrawing
the associated Control Module from the installation.
Do not remove the sensor from the installation.
CAUTIONS
18
705 Sensor CO