Edwards Signaling E-PD - Manual (Page 2)

2 / 2 P/N 3101207 • REV 03 • REB 28JAN13
Maintenance
Cleaning the detector
When cleaning is necessary, the sensing chamber of the
detector unsnaps for easy field cleaning and service.
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. See Figure 3.
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 technical reference manual.
10. Test the detector and verify sensitivity.
Figure 3: Detector disassembly
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 require a 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.
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 using Smoke-In-A-Can (model SM-200)
canned smoke. Carefully follow directions on the can to
avoid damage to the detector.
Specifications
Communication line voltage Maximum 20 V peak-to-peak
Normal operating current 45 µA
Alarm current 45 µA
Smoke sensitivity range
UL
ULC
0.67 to 3.66%/ft. obscuration
0.74 to 3.70%/ft. obscuration
Environmental compensation Automatic
Compatible bases Standard: B4U, B4U-LP
Relay: RB4U
Isolator: IB4U
Audible: SB4U
Maximum distance from ceiling
wall-mounted 12 in. (305 mm)
Storage temperature −4 to 140°F (−20 to 60°C)
Operating environment
Temperature
Humidity
32 to 120°F (0 to 49°C)
0 to 93% RH, noncondensing at
90°F (32°C)
Certification and compliance
Manufacturer Edwards, A Division of UTC Fire & Security
Americas Corporation, Inc.
8985 Town Center Parkway, Bradenton, FL 34202,
USA
Year of
manufacture The first two digits of the date code (located on the
product identification label) are the year of
manufacture.
North American
standards Meets: UL 268, ULC-S529-02,
Follow: NFPA 72, and CAN/ULC-S524
Contact information
For contact information, see our Web site:
www. edwardssignaling.com.