Edwards Signaling E-PHD - Manual (Page 2)

2 / 4 P/N 3101208 • REV 03 • REB 28JAN13
Figure 2: Breakaway tab
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1. Breakaway tab
Maintenance
Cleaning the detector
When cleaning is necessary, the sensing chamber of the
detector unsnaps for easy field cleaning and service.
Note: Only the smoke element of the detector requires
cleaning.
To clean the detector:
1. Remove the detector from the base.
2. Insert a screwdriver in the small slot where the detector
cap connects to the detector body.
3. Pry the detector cap off the detector body.
4. Squeeze the optical block chamber where the two arrows
point, labeled “squeeze here.”
5. Pull off the optical block chamber.
6. Blow off the optical block base in the detector body using
clean compressed air.
7. Snap a new optical block chamber in place. Make sure
you line up the two arrows on the block chamber with the
snaps on the optical block base.
8. Connect the detector cap to the detector body by rotating
the cap clockwise until it snaps into a locked position.
9. Install the detector onto the base.
Note: To verify the effectiveness of the cleaning,
recalibrate the device and run a device maintenance
report. Refer to the control panel technical reference
manual.
10. Test the detector and verify sensitivity.
Figure 3: Detector disassembly
Detector body
Sq ue ez e
He re
Detector cap
Optical block
chamber
Slot to insert
screwdriver
Optical block base
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1. Slot to insert screwdriver
2. Optical block chamber
3. Detector body
4. Optical block base
5. Detector cap
Test
NFPA 72 and CAN/ULC−S537 code require calibrated
sensitivity test upon completion of the original installation and
following any modifications or additions to the system. The
detector can perform this test and generate a system
sensitivity report.
Note: Test both the smoke element and the heat element of
the detector.
To test the detector:
1. Before initial testing, remove the dust cover from the
detector and notify the proper authorities that the fire
alarm system is undergoing maintenance and will be
temporarily out of service.
2. Test the detector’s smoke element using Smoke! In A Can
(model SM-200), canned smoke. Carefully follow
directions on the can to avoid damage to the detector.
3. Test the detector’s heat element using a heat gun
maintaining a six-inch minimum distance. Use caution as
excess heat can damage the detector and detector
housing.