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Maintenance
Detector Maintenance
Repair of all equipment should be only performed in a safe area
and by trained personnel.
Once installed there are no user serviceable parts within the detector. The only servicing requirements are to ensure
that the detector is fully functional and to ensure that the lenses are clean.
The terminal compartment cover and front cover threads must be lightly lubricated with non-setting grease prior to
re-assembly.
This maintenance schedule is intended for guidance only. The actual level of maintenance required will depend on
the severity of the operating environment and the likelihood of damage or the rate of contamination from oil, sea spray,
deluge system etc. It is advisable to regularly review maintenance reports and adapt the maintenance period to the
operating environment. A function test of the detectors using the Dräger FS-5000 (See Accessories, page 26) should
be carried out regularly.
Maintenance Intervals
Periodic maintenance checks may be performed in accordance with appropriate codes of practice or local regulations
e.g. in Europe EN 60079-17 applies.
These fi rst fi ve points relate to the general inspection and maintenance of the detector and faceplate, this should be
carried out at least every 6 months.
•
Detectors that require maintenance should be taken off line and inhibited. Detectors which require to be opened
up will need to be isolated electrically. Ensure that panel wiring and terminations associated with all units under
test are in good order.
•
Ensure that detector mounting arrangements are secure and undamaged.
•
Ensure that the detector enclosure is intact and undamaged.
•
Ensure that all associated cables and glands are correctly made up, secure and undamaged.
•
Clean the enclosure faceplate (outside) with a mild detergent solution and a soft cloth until the window is clear
of all contamination. Wash the window thoroughly with clean water and dry with a clean lint free cloth or tissue.
Assess requirement for opening the enclosure, for maintenance or cleaning.
The nine points below are for more specifi c inspection and maintenace of the detector enclosure, which should be
performed at least once a year. These points focus as a close external visual inspection and internal inspection if
required.
•
Open the detector enclosure, if required, by removing the enclosure cover. This exposes the enclosure fl ame path
and detector electronics. Avoid damage to the fl ame path and faceplate.
•
Clean the enclosure cover and body fl ame paths with a dry clean cloth to remove any contamination. If the fl ame
path or threads are badly pitted the component should be replaced.
WARNING
!
Maintenance
21
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