Table of Contents
Advertisement
PHOTO UNITS
a. Remove detector cover by inserting a small-bladed screwdriv-
er into the cover removal slot located approximately 90
degrees from the test module socket, twisting cover counter-
clockwise to remove. See Figure 10.
b. Lift the screen from the photo chamber. Vacuum the screen
and cover before using clean, compressed air to loosen and
blow out any remaining debris. (Replacement screens, part no.
SSDRS24, are available.)
c. Vacuum photo chamber, then use clean compressed air to
blow area clean.
d. Replace screen by aligning arrow on top with the field test slot
on the base of the detector. Push screen into place. Screen
should fit tightly to chamber.
ION UNITS
a. Remove the detector cover and screen assembly by depress-
ing the three lock prongs on the top of the cover and rotating
the cover counterclockwise. The SSDCRT400 Cover Removal
Tool makes cover removal easier. See Figure 11.
b. Carefully pull the screen out of the cover.
c. Clean the screen thoroughly with a soft brush or vacuum.
(Replacement screens, part no. SSDRS14.)
d. Brush or vacuum the inside of the cover. Cover may then be
blown out using clean, compressed air.
e. Vacuum sensing chamber before using clean, compressed air
to loosen and blow out any remaining debris.
f. Press the screen back into the cover.
g. Replace the detector cover on the sensing chamber. Rotate it
clockwise to lock it into place.
BOTH TYPES OF UNITS
5. Reinstall the detector in its housing.
6. Restore system power.
7. Put detector into alarm using appropriate method as described
in STEP 7. PERFORM DETECTOR CHECK.
8. Notify the proper authorities that testing has been completed
and the smoke detector system is back in service.
9. Other checks that should be made during maintenance proce-
dures:
— Holes or cracks in duct work near vicinity of detector.
— Air leaks where detector housing or sampling tubes are
attached to duct.
— Dust accumulations in or on sampling tubes.
— Screw terminal tightness.
SPECIFICATIONS
Length:
Width:
Depth:
Weight:
Operating Temperature Range:
Operating Humidity Range:
Duct Air Velocity:
H500-03-00
14.5 inches (36.7 cm.)
5 inches (12.7 cm.)
4 inches (10.2 cm.)
4 lbs. (1.8 kg.)
32° to 120°F (0° to 49°C)
10% to 93% Relative Humidity
500 – 4000 ft./min. (157.5 – 1219.2 m/min.)
10
COVER
REMOVAL
SLOT
Figure 10. Photo Head Exploded View
REMOVABLE
COVER
FOR
CLEANING
REMOVABLE SCREEN
LOCK PRONG
SENSING CHAMBER
Figure 11. Ion Head Exploded View
REMOVABLE
COVER
REPLACEABLE
SCREEN
VANED
SENSING
CHAMBER
A78-2454-00
A78-2455-00
I56-475-09R
Hide quick links:
Advertisement
Table of Contents
