Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Page 7-2 Issue 1
February 2001
7.3.4 Sample-Hole Airflow Verification Test
The sample-hole airflow verification test insures each sample port is drawing air from the protected area.
This test should be done at commissioning and within one year after installation and every year
thereafter.
To perform this test the suction pressure of each sample port must be checked. See Chapter 5 of this
manual for the procedure for checking suction pressures. Suction pressures should be compared to the
original measurements. If any differences are noted, the cause of the deviation must be determined.
7.3.5 Detector Sensitivity Test
The Detector sensitivity test must be performed within one year of installation and every alternate year
thereafter. This test can be performed via LaserNET or optional Display module. After the second
required sensitivity test, if the sensitivity test indicates pass, the length of time between calibration tests
can be extended for up to five years.
Example: Year-one check
Year-three check
If years one and three are OK,
Go to five-year interval
The Detector employs a self-monitoring, 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.
7.3.6 Clean Detector
CAUTION
ANTI-STATIC PRECAUTIONS
WHEN HANDLING ANY ELECTRIC COMPONENTS OR
CIRCUIT BOARDS ANTI-STATIC PRECAUTIONS MUST
BE CARRIED OUT. FAILURE TO DO SO MAY RESULT IN
COMPONENT DAMAGE.
Static discharge can be reduced by adhering to the following guide lines.
(1) Always use conductive or anti-static containers for transportation and storage, if returning
any item.
(2) Wear an earthed wrist strap while handling devices and ensure a good earth is
maintained throughout.
(3) Never subject a static sensitive device to sliding movement over an unearthed surface
and avoid any direct contact with the pins or connections.