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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 is being attended to and that all other
indicators are normal.
WEEKLY: Check the catch pot for high levels of particulate or excessive water contamination. On
sites involving a high risk process of having gases which may cause loss of sensitivity a check on
calibration should be carried out.
SIX MONTHLY MAINTENANCE
1. Zero check to gas sensor
2. Sensor to be gas tested and readings logged (sensitivity checked).
3. Field indicators to be tested.
4. Alarm trip points checked and re-aligned.
5. All faulty parts replaced where required.
6. All filter elements checked and replaced as necessary.
7. Power supply – voltage check.
8. Inspection made to confirm that all sample line fittings and equipment are secure, tight,
undamaged and adequately protected.
12 MONTHLY MAINTENANCE SCHEDULE
1. Six monthly check.
2. Pump overhaul (diaphragm replacement).
3. Auto Drain Unit (where fitted)
