Maintenance - Honeywell Sensepoint Technical Manual

Sensepoint
areas in Europe. Installation must be in accordance with the recognized
standards of the appropriate authority in the country concerned.
Before carrying out any work ensure local regulations and site procedures
are followed. Appropriate standards must be followed to maintain
Access to the interior of the detector, when carrying out any work, must only be
conducted by trained personnel. Switch off and isolate the power supply
to the detector when access is required.Take any necessary
Never attempt to open a junction box/enclosure or replace/refit the sensor
The detector must be earthed for electrical safety and to limit the effects of
radio interference. An earth point is provided inside the unit. Ensure that
all screens/armor are grounded at a single earth star point at the controller
or detector - BUT NOT BOTH - to prevent false alarms due to earth loops.
Take care when handling sensors as they may contain corrosive solutions.
Do not tamper or in any way dis-assemble the sensor.
Do not expose to temperatures outside the recommended range.
Do not expose sensor to organic solvents or flammable liquids.
At the end of their working life, sensors must be disposed of in
an environmentally safe manner. Disposal should be according to local
waste management requirements and environmental legislation.
Alternatively, sensors may be securely packaged and returned to
Honeywell Analytics clearly marked for environmental disposal.
Electrochemical cells should NOT be incinerated as they
When replacing the gas detector's junction box ensure that the correct
This chapter describes the following:
• expected operational life of the sensor
• gas sensor replacement, see page 22
• replacing a junction box, see page 24
• changing the outer filter, see page 26
• troubleshooting, see page 26
2106M0525 Iss 2 Nov 05

Maintenance

is designed for installation and use in Zone 1 or 2 hazardous
the overall certification of the detector.
precautions to prevent false alarms.
when flammable/toxic gas is present.
may emit toxic fumes.
gas label is affixed to the replacement enclosure.
WARNINGS
Maintenance
20