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Planning
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4.4.4.6
Maintenance sampling hole
In applications with sampling holes that are difficult to access, a maintenance sampling hole can, if necessary, be made in the
sampling pipe immediately after the detector housing. The maintenance sampling hole must be drilled with a hole diameter of
3.5 mm. The distance from the detector housing must be at least 0.5 m.
If required, the maintenance sampling hole can be made using the special “maintenance clip” (clip without drilling). See also
Sec. 5.5.9.
Please note the following information:
Notice
When making a maintenance sampling hole, observe the following principles:
•
A maintenance sampling hole should be made only if required, for example where normal sampling holes are
difficult to access.
•
A maintenance sampling hole is not included in the calculations set out in Sec. 4.4.4.3 and 4.4.4.4.
•
The maintenance sampling hole is used only for maintenance purposes, to test the ASD 532 for alarming.
•
In normal operation (no maintenance), the maintenance sampling hole must be sealed off with adhesive tape
or a “maintenance clip” if available.
•
All commissioning work on the airflow monitoring (initial reset) must be carried out with the maintenance sam-
pling hole sealed off.
4.5
Equipment monitoring
4.5.1
Equipment monitoring applications
Equipment monitoring applications using the ASD 532 are additional monitoring applications to space surveillance. Equipment
monitoring directly involves monitoring an object (machine, device or equipment). The ASD 532 is capable of monitoring the
following objects:
•
Electrics cabinets with or without forced ventilation
•
EDP computer systems and cabinets with or without ventilation
•
Devices and machines in production technology
•
Transmitting installations / transmission facilities
•
Vacuum cupboards in the chemical industry (air recirculation), subject to prior consultation with the manufacturer.
ASD532
Operating
Manual
Summary of Contents for ASD 532
Page 1: ...ASD 532 Aspirating Smoke Detector Operating Manual ...
Page 2: ...2 88 ASD532 Operating Manual ...
Page 6: ...6 121 ASD532 Operating Manual ...
Page 7: ...Document history 7 121 Document history First edition Date 15 10 2015 ASD532 Operating Manual ...