Service Routine Attention
The owner or occupier of the site should place the supervision of the system in the charge of a
responsible executive, whose duty it should be to ensure the day to day operation of the system and
to lay down the procedure for dealing with a gas alarm or fault warning.
The operating instructions should be kept available, preferably with the control unit. All faults,
service test and routine attention given should be recorded.
DAILY:
A check should be made that any fault condition which may be indicated is in fact being
attended to and that all other indicators are normal.
WEEKLY:
Check the catch pot (where fitted) for high levels of particulate or water contamination,
replace filters as necessary.
Twice yearly maintenance schedule
1. Zero check to sensor
2. Sensor to be gas tested and calibrated
3. Test gas applied to all intake modules
4. Field indicators to be tested
5. Alarm trip points checked and re-aligned
6. All faulty parts replaced where required
7. All filter elements checked and replaced as necessary (catch pot filter)
8. Power supply – voltage check
9. Visual inspection made to confirm that the sample line fittings and equipment are secure,
undamaged and adequately protected
12 monthly maintenance schedule
1. Twice yearly schedule
2. Draw pump overhaul (diaphragm replacement)
3. Auto drain – pressure tube replacement (if fitted)
36 monthly maintenance schedule
1. Pump replacement
RECOMMENDED TEST GAS:
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