Edwards Signaling ReadySet - Manual (Page 47)

Chapter 6: Maintenance
ReadySET Aspirating Smoke Detection System Installers Handbook 39
Generally, if one of a series set of batteries is low, the others will soon fail. Therefore, it
is advisable to replace all the batteries of a series set when one requires
replacement.
Gross smoke test
The gross smoke test is a go/no-go test which ensures that the detector responds
to smoke. This test must be performed at system commissioning and at least every
year thereafter.
To perform this test, smoke must be introduced into the last sampling hole in each
branch of the pipe network and the proper detector response must be verified. Smoke
from a punk or cotton wick may be used. Canned smoke may also be used.
Caution:
Oil-based canisters that are used to test point detectors are not suitable
for testing aspirating systems as the particulate is heavy and tends to drop out in the
pipe, never actually reaching the detector. Also, the oily residue that is left behind may
affect the functionality of the detector
.
Transport time verification test
The maximum transport time of the pipe network must be measured and compared to
the recorded transport time at commissioning. (Refer to “Transport time verification”
on page 32 for test details.) The transport time verification test must be done at
commissioning and at least every year thereafter.
Detector sensitivity test
The detector sensitivity test must be performed within one year of installation and at
least every alternate year thereafter.
Example:
• Year-one check
• Year-three check
The detector employs a self-monitoring, automatically adjusting calibration for the
system. The inspection only requires a periodic visual inspection for a detector fault
indication and performing the detector sensitivity test function.
If the self-monitoring feature of the system senses that the operation of the detector head
is outside its normal range, a trouble condition will be generated.
Cleaning the detector
The exterior of the detector should be cleaned as necessary. Clean the detector
with a damp (not wet) cloth.