Apollo 29650-081, Product Manual

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Apollo Fire Detectors Discovery ASD-1 Product Guide
www.apollo-fire.co.uk 19
7 Maintenance
Maintenance should only be carried out by qualified personnel. To prevent unwanted alarms, ensure that the
proper authorities have been informed and that the unit has been isolated from the fire system.
Caution: When installing or servicing the unit, ensure that the operator is safely earthed so as to prevent
electro-static discharge (ESD) damage to the unit.
7.1 Air Inlet Filter Replacement
With normal use, the filter element will eventually become contaminated with dust particles, impeding airflow,
and it is recommended that the filter element (order code 29600-946APO) is changed every six months or as
necessary. In special cases where the detector is placed in extreme environmental conditions, the filter
should be changed every three months.
1. Remove the transparent cover using the special tool provided to unscrew the tamper proof fasteners.
2. Lift out the foam filter element from the filter tube using tweezers or long nosed pliers
3. Fit a new filter element ensuring that the filter is not compressed during fitting and that it is positioned
flush with the top of the filter tube.
4. Replace the top cover.
Figure 7-1: Filter Replacement
7.2 Point Detector Replacement
Point detectors should be serviced in accordance with the manufacturer's recommendations.
To remove and replace the point detector:
1. Disconnect power from the Discovery ASD-1.
2. Loosen the four screws that secure the clear plastic cover to the housing base.
3. Refer to the point detector manufacturer instructions for the correct release procedure. Rotate the
sensor counter-clockwise to remove it from the base.
4. Remove dust cover from the replacement point detector.
5. Insert the point detector into the base and rotate until fully seated. Continue rotation until lock has been
engaged.
6. Secure the clear plastic cover to the housing using the four screws.
Notes:
l
An audible “snap” indicates proper contact engagement.
l
System will not operate with dust cover in place.
l
Refer to the point detector manufacturer instructions for further information.