Lincoln Electric P709 GUARDIAN CONTROL SOLUTIONS - Manual (Page 44)

A-37 INSTALLATION
GUARDIAN CONTROL™ SOLUTIONS
A-37
SMOKE DETECTOR
DESCRIPTION
The Smoke Detectorʼs operation is based on light scat-
tering by the air sampling tube. The sampling tube
transports the air to the smoke detector. When smoke
is detected, it sends a signal to the Guardian™ Panel.
The Guardian™ Panel activates the fire suppression
system.
COMPONENTS:
• Smoke Detector
• Air Sampling Tube
• Mounting Bracket
• Rubber Bushing
• Test Spray 250 ml
LOCATION
• On filter outlet duct (airflow >200 fpm)
• Minimum 5 times duct diameter from bend or branch
and filter Example: If duct is 12” in diameter, mount
the smoke detector 60” from any bend or branch
• Before sliding valve
• Any orientation on the duct; horizontal or vertical
NOTE: Mount the smoke detector in such a position
that the LED display showing the contamina-
tion level is visible from the floor.
To mount the smoke detector, proceed as follows.
1. Drill a hole Ø 1.7 in. (43-44 mm) in the center of the
duct.
NOTE: Donʼt let debris fall into blower motor.
The end of the air sampling tube should at least reach
the centre of the duct cross-section. Min. length of
tube: 6.3 in. (160 mm). If the air sampling tube needs
to be shortened, proceed as follows.
See Figure A.41.
2. Determine the appropriate tube length. (No less
than 6.3 inches)
3. Remove the end cap (C).
4. Shorten the length of the air sampling tube (B).
Minimum tube length 6.3 in./160 mm (A). Using a
hack saw.
5. Replace the end cap.
See Figure A.42.
6. Bend the mounting bracket (A) to fit the duct diame-
ter using the perforations.
7. Mount the mounting bracket on the duct. Using self
tapping screws align the hole of the mounting brack-
et to the one in the duct.
8. Place the rubber bushing (B) in the hole of the
mounting bracket.
9. Insert the air sampling tube (C).
FIGURE A.40 – SMOKE DETECTOR
SMOKE
DETECTOR
TEST
SPRAY
RUBBER
BUSHING
AIR SAMPLING
TUBE
MOUNTING BRACKET
FIGURE A.41
A
B
C
END CAP
To prevent the smoke detector from
malfunctioning, the end cap shall
always be used.
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ATTENTION
FIGURE A.42
C
B A