Chapter 6: Preventive maintenance and testing
EST3X Technical Reference Manual 155
7. Operate the detector for a minimum of two hours, and then restart the loop
controller. When cleaned properly, the maintenance indicators return to
normal condition.
8. Check and record the detector’s dirty level reading to verify the effectiveness
of cleaning. See “Device maintenance reports” on page 52.
9. If cleaning is unsuccessful, return the detector to the factory and replace it
with a new detector.
Figure 43: Cleaning a SIGA2 detector
2) Detector base
3) CO sensor module (CO detectors only)
(6) LED indicator
(7) Access slot for tamper-resist mechanism
Signature Series detector component replacement
procedures
SIGA2 smoke chamber
SIGA2 smoke detectors have replaceable smoke chambers. Replace the
chamber if after cleaning the detector the control panel still indicates a dirty
detector. Refer to the installation sheet received with the smoke chamber for
instructions.
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