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PM Routines Library: Heat Detector
   
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Title:
Heat Detector
Level 1 Major Group:
D: SERVICES
Level 2 Group:
D50 Electrical
Level 3 Individual Elements:
D5030 COMMUNICATIONS & SECURITY
Frequency:
Quarterly
Preventative Maintenance:
Inspect conduit for loose hangers or clamps.
Ion chamber detectors (including duct type) - activate alarm with aerosol spray or by blowing smoke near detector.  Test for proper signals.  Check air sampling tubes for duct type.  Clean according to manufacturer's instructions.
Self-restoring temperature detectors - increase temperature or mechanically complete circuit and test for proper signals.  Make adjustments if necessary (snap action or bi-metallic strips).
Non-restorable temperature detectors - check tension on thermostatic cable.  Check continuity of circuits by use of test buttons or by mechanically completing circuit.  Test for proper signals.
Pneumatic tube detectors - in locations susceptible to damage, check tubing for crimps or damage.  Heat tubing by means of resistance heater, hot water, etc., and test for proper signals.  Adjust release device and replace diaphragm if necessary.
Photoelectric detectors (including duct type) - inspect for proper alignment.  Diffuse or obstruct the light rays and test for proper signals.  Check air sampling tubes for duct type.  Clean according to manufacturer's instructions.
Water flow alarms (zoned) - open valve to test pipe or drain pipe (usually located at sprinkler risers) or open inspector's test valve (located at end of most remote branch line) and check for proper transmission signals from water flow paddle alarms or pressure switches.  This should be done in conjunction with alarm check valve maintenance.
General - check other features for activation by the devices through the fire alarm control panel.  These features include alarm bells, elevator capture, releasing of fire doors held open, notification of fire department, smoke control, etc.
Clean surrounding area, record results and findings and report any needed repairs or operational adjustments.
Safety Warnings or Special Precautions:
Obtain and review manufacturer's instructions.  Follow manufacturer’s instructions or procedures if different to these instructions or procedures.
The work required by this procedure may cause the activation of an alarm and/or a supervisory signal.  The control center or fire department that will receive the alarm and/or signal must be notified prior to start of work. 
When it is both feasible and safe, the environmental conditions being monitored should be altered to actuate the device. 
It is specifically prohibited to use aerosol sprays which contain chlorofluorocarbons or halogens. 
Tools & Materials Required:
Standard and Phillips head screw drivers-various sizes; Pliers-vise grip (2), slipjoint, needlenose, diagonal; cutting pliers, side cutters; Ball peen hammer; Hack saw and spare blades; 3/8' drive socket set and ratchet; Small set of Allen wrenches; Assorted center punches, drift punches, and steel chisel; 12' measuring tape; Crescent wrenches 4" to 8";  Open and box end wrenches ¼" to ¾"; File; Pipe wrenches to 14"; Small level and square; Pocket knife; Flashlights; Grease guns and oilers; Wire brush; Extension cord and inspection lights; Various cleaning tools - brushes, scrapers, etc; Emery cloth.
Cleaning Materials
Consult the Material Safety Data Sheets (MSDS) for hazardous ingredients and proper personal protective equipment (PPE).
Gloves.
Attachments:
 
 
Created at 4/23/2008 11:00 AM by Anna Carey
Last modified at 5/16/2008 3:13 PM by Anna Carey