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5. Clean dust from the detector cover, foam screen, sens-
ing chamber and labyrinth using a brush, or by blowing
with compressed air.
Do not use a compressed air supply that may
contain an oil residue.
Do not remove or loosen the two screws on
the rear of the detector, or calibration data will
be lost.
The insect screen and labyrinth may be
replaced with new parts, rather than be
cleaned. Contact Siemens Building Technolo-
gies, Inc. Product Service to order Detector
Maintenance Kit, Model DMK-11. Do not
disconnect the thermal wires from the
detector.
6. Reassemble the detector by reversing the steps used for
disassembly, and reinstall in its base.
7 . Test the detector. (See Detector Testing section of this
instruction.)
8. When all service has been completed, notify personnel
(See Step 1) that system service has been completed.
No field repair of the detectors should be
attempted. The detectors are factory repair-
able only.
ELECTRICAL RATINGS
CX-2 (FDLC) Addressable Device Loop ratings:
Voltage: 18-31V (pulsing)
Current: 1mA
Siemens Building Technologies, Ltd.
2 Kenview Boulevard
Brampton, Ontario L6T 5E4 Canada
THERMAL
RELEASE
AXIS
COVER TAB
RELEASE
AXIS
SENSING
(MATCHES AXIS
CHAMBER
OF REAR SCREWS)
Figure 4
Disassembling of SFP-11 Photochamber
RELEASE
AXIS
COVER TAB
RELEASE
AXIS
SENSING
(MATCHES AXIS
CHAMBER
OF REAR SCREWS)
Figure 5
Disassembling of SFPO-11 Photochamber
FOAM
SCREEN
COVER
LOCKING
SCREW
(OPTIONAL)
LABYRINTH
FOAM SCREEN
COVER
LOCKING
SCREW
(OPTIONAL)
LABYRINTH
P/N 315-033290C-7
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