SARGENT 2900 Fire Guard Electromechanical Closer-Holder - Manual (Page 3)

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A7408B
1. Turn the power to the unit “On”. Red LED pilot light should illuminate at 8 sec. intervals
2. Open door to the hold open point. The door should hold open. Manually pull door out of hold open and release. Door should close
3. Open door to the hold open position. Depress (maintained type) On/Off “test switch” button on the power supply board. Door should close
4. Depress On/Off test switch again. Open door to the hold open position. Inducing smoke into the smoke detector chamber assembly will bring the unit
into alarm. The red LED will be continuously illuminated and the door will close. After clearing the smoke chamber, reset unit as follows
Checkout Procedure
1. Remote Reset: Cycle main power by turning the facility main power supply OFF then ON.
NOTE: If there are other units connected to the same power supply those doors will close.
They will have to be reopened returning them to the hold open position
2. Local Reset: Insert a small flat head screwdriver through the cover and into the slotted
light tube on the smoke detector as shown. Turn screwdriver slightly (about 1/8 turn)
clockwise until hitting stop and hold for 2 seconds until the Red LED turns OFF.
WARNING: Do not force past the stop. Doing so may damage the smoke detector
Once the detector is reset and the smoke has cleared, the detector’s Red LED should flash
once every 8 seconds. The door(s) should hold open now
Resetting Instructions
SARGENT recommends cleaning smoke detectors at least every six months. The frequency of cleaning will depend upon local ambient conditions
The smoke detector in this door closer-holder has been enhanced with a feature that detects when a smoke-sensing chamber requires cleaning
due to dirt and dust. The need for cleaning is indicated by the flashing of the Red LED light once per second
• Normal Supervisory Operation — Red LED flashes once every 8 seconds
• Dirty Chamber, needs cleaning — Red LED flashes once every second
• Smoke Detection — Red LED is continuously illuminated
To clean the smoke detector assembly, follow the instructions below:
NOTE: Before servicing the system, notify the proper authorities
that the smoke detector system is undergoing maintenance
and will be temporarily out of service. Disable the zone undergoing
maintenance to prevent unwanted alarms
Smoke Detector Maintenance
• Remove detector cover and screen assembly using a standard screwdriver. Turn the screwdriver in the cover slot to loosen the cover and carefully
rock the cover back and forth until it snaps out of place. See slot location above
• Inspect chamber for particles and dust. Vacuum the screen, cover, and photo chamber. Then use clean, compressed air to loosen and blow out
any remaining debris
• Before reassembling the detector, be sure all parts are free of dust and debris
• Replace cover and screen, aligning cover snaps, press cover onto chamber until it snaps into place
• Measure and record the test voltage at test points RP1 and RP2 (see above). If the smoke detector is operating normally and was cleaned
effectively, the test voltage will be greater than .90VDC and less than 1.58VDC. The test voltage will increase with dust accumulation in the
smoke sensing chamber. A difference in test voltages over time will provide an indication of dust accumulation
• Enable system and inform proper authorities system is operational
RP2 test point
RP1 test point
Slot for screwdriver
To remove cover
Cover and
screen
Chamber
Slotted light tube (Red LED)