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smoke generate an alarm. (Refer to the appropriate
System Manual for further explanation.) In such
circumstances, the detector may require cleaning as
a result of dust accumulation; follow the CLEANING
PROCEDURE steps described below.
MAINTENANCE
The recommended requirement for detector
maintenance consists of the annual cleaning of dust
and debris from the detector head. Cleaning program
intervals should be geared to the individual detector
environment.
CLEANING PROCEDURE
1. Notify the proper building personnel that the fire
alarm system is being serviced.
2. Remove the detector being cleaned from its base
and remove the detector cover.
NOTE: The cover on the ILPT-1 is permanently
wired to the detector PCB assembly. There is
enough length in the connecting wire, however,
to allow access for cleaning, but do not
disconnect the wire.
Place the detector assembly on a flat surface with
the photochamber visible and accessible.
3. To clean the cover, carefully use a small brush or
blow any additional dust from the cover.
* Some ILP-1/ILPT-1 detectors may use a foam bug screen which is located
in the cover. Make sure this foam bug screen is in the proper position when
reassembling the detector after cleaning.
Figure 3
Disassembling of the Photochamber
Figure 4
Model ILPT-1
Siemens Building Technologies, Inc.
8 Fernwood Road
Florham Park, New Jersey 07932
P/N 315-092594-8
4. (Refer to Figures 3 and 4 and the NOTE in No. 2
above.) Remove the lower section of the
photochamber by gently squeezing the sides to
disengage the locking tabs and then pulling the
lower section out.
5. Use a small soft brush to loosen dust in the
crevices. Vacuum any dust from the lower
photochamber. Do not use cleaners or solvents
on the lower photochamber.
Another method for cleaning the photochamber
after removing the lower section is to blow out the
dust. However, do not use compressed air that
might contain oils. When not used properly, some
commercially available compressed gas cleaning
canisters (those used on computer equipment, for
example) disperse liquid instead of gas. If these
products are used in cleaning, be careful that no
liquid deposits occur, since such deposits will
permanently alter detector sensitivity.
6. Clean the upper photochamber by repeating the
procedures used in Step 3, observing same
precautions.
7. (Refer to Figures 3 and 4.) Replace the lower
photochamber by aligning the locking tabs and
gently pressing the chamber into position.
8. Replace the cover of the detector assembly,
positioning the visible LED correctly. Replace the
detector in the base.
9. Clean all other Model ILP-1/ILPT-1 detectors
following Steps 2 through 8.
10. Recheck the sensitivity of the detector.
11. If the sensitivity of the detector is still outside the
limit shown on the nameplate, return the detector
to the factory for repair.
12. Notify building personnel that the system is
reactivated.
CAUTION
No field repair of the detectors should be attempted.
The detectors are factory repairable only.
COMPATIBLE CONTROL EQUIPMENT
Refer to the SYSTEM XL3 OPERATION, INSTAL-
LATION, AND MAINTENANCE MANUAL, P/N 315-
083206, the MXL/MXLV OPERATION, INSTAL-
LATION, AND MAINTENANCE MANUAL, P/N 315-
092036, or the MXL-IQ OPERATION, INSTALLATION,
AND MAINTENANCE MANUAL, P/N 315-093624, or
the ICON-1 INSTRUCTIONS, P/N 315-093087.
Siemens Building Technologies, Ltd.
2 Kenview Boulevard
Brampton, Ontario L6T 5E4 CN
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