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8 MAINTENANCE
8.1 SAFETY INFORMATION
WARNING!
Refer all servicing and maintenance to qualified service personnel.
WARNING! – EXPLOSION OR COMBUSTION RISK
Observe the requirements in the certificates and the precautions and Special Conditions of Use documented in this
manual. (Refer to the Equipment Marking Information, section 4.5 on page 7.)
The equipment may be opened only when it is de-energized or the area has been designated as 'safe' at that
time.
Refer to the Sensor Safety Description on page 6 for information on safe handling of the sensor in hazardous
zones.
WARNING!
Do not open when energized!
WARNING! – CONTAMINANTS
Disconnecting the unit from a positive pressure stack may result in hot stack gas or dust escaping. Use
protective gloves and other PPE.
Check for any specific health implications of process gas and/or dust before commencing maintenance.
CAUTION!
Do not allow moisture to penetrate the unit.
CAUTION! – PROBE DAMAGE
Take care when handling the sensor to avoid bending or damaging the probe. Probe damage may result in
inaccurate measurements.
CAUTION!
Do NOT try to rotate the sensor by its enclosure as this can damage the sensor.
CAUTION!
If a cable gland needs to be replaced, the replacement gland must be Ex-rated and must include an elastomer
seal. When fitting ensure that the lock nut must fully engage with the thread of the gland inside the enclosure.
8.2 PREVENTATIVE MAINTENANCE PROGRAMME
The preventative maintenance programme ensures that the FFD sensor remains reliable throughout its life. The frequency
of the maintenance programme is dependent upon the type of environment in which the instrument is used.
It is recommended that the programme is followed from one month after installation, then after 3-, 6-, or 12-monthly
intervals as deemed necessary.
INSTALLATION AND OPERATION MANUAL – OWNER'S RECORD FFD MANUAL – FILTER FAILURE DETECTOR
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