Lincoln Electric P709 GUARDIAN CONTROL SOLUTIONS - Manual (Page 40)

A-33 INSTALLATION
GUARDIAN CONTROL™ SOLUTIONS
A-33
Figure A.34 shows the first heat sensor without End Of
Line resistor.
Alarm resistor
The heat detectors are fitted with a 470 ohm alarm
resistor (RAL) placed in series with a switching contact
circuit. The alarm resistors have no active function and
do not interfere with the functionality of the Guardian™
Panel fire detection panel.
NOTE: Shielded cables must be used. Not using
shielded cables can lead to a false alarm
induced by external high voltage sources.
FUNCTIONAL TESTING (GENERAL)
NOTE: Before performing any functional testing make
sure the Flame Guardian™ is disconnected to
prevent unwanted discharge. See Wiring
Diagram.
To perform any functional test, the following instruc-
tions should be followed.
1. Ensure that the Flame Guardian™ module(s) is/are
not connected to power source.
2. Perform the desired Functional Test. Sound alarm
will go off.
3. Check fire zone.
4. Press the SIGNAL SILENCE button on the
Guardian™ Panel to suppress alarm.
5. Press the SYSTEM RESET button.
To proceed with testing:
• Restart procedure.
If testing has been completed:
• Reconnect the Flame Guardian™ module(s).
• Make sure the panel is in RUN mode.
FUNCTIONAL TEST (HEAT DETECTORS)
The operation of the heat detectors can be checked in
two ways;
1. By measuring the ohm resistance:
A. Gently heat the detectors using a heat gun or
heat lamp.
2. By connecting them to the fire detection panel:
A. Gently heat the detectors using a heat gun or
heat lamp.
B. Check the system status. Guardian™ Panel
should indicate a fire in Zone 2.
NOTE: Do not heat the detector to more than 131°F
(55°C) because this can change the default
temperature setting.
FIGURE A.34 – HEAT SENSOR WITHOUT
END OF LINE RESISTOR
RAL
black
black
2x black 2x white
white
white
from other detector
or panel
to next detector
Notify all parties in the work area before testing the
fire safety system; See Maintenance Section.
------------------------------------------------------------------------
ATTENTION
Do not use open flames to test Heat
Detectors.
Keep heat source away from filters
and other flammable materials.
Using an open flame source may cause a fire and
result in injury or death.
------------------------------------------------------------------------
WARNING