SECTION 4 – SYSTEM INSTALLATION
UL EX3830 ULC EX3830
PagE 4-18 REV. 06 2014-NOV-10
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
SYSTEM CHECkOUT AFTER INSTALLATION
1. Model MCH3/NMCH3 Mechanical Control Head
Before putting the system into service, all components must be
checked for proper operation. During this checkout, assure that
the carbon dioxide pilot cartridge is not installed in the control
head actuator. Remove the pull pin from the hole in the slide
plate.
To check satisfactory operation of the control head, cut the
terminal link or the “S” hook holding the link. This will relieve
all tension on the fusible link line and operate the control head.
The slide plate will move fully to the right. The gas valve cable
will be released, causing the gas valve to close. any auxiliary
equipment connected to the dry contacts of the solenoid monitor
and/or the electrical (snap-action) switch in the control head will
operate.
If any of these events fail to occur, the problem must be inves-
tigated and repaired.
Repair the terminal link and put the fusible link line back into the
set position. This is accomplished by using a 1/2 in. hex wrench
on the fusible link line ratchet wheel. The ratchet wheel will be
ratcheted in a clockwise direction until the spring plate makes
contact with the top of the control head box.
Note:
Tension must be set on fusible link detection line before
control head can be set.
Once the fusible link line is set (refer to Pages 4-4 through
4-6 for fusible link installation details), the control head can be
placed in the set position. To set the control head, the slide
plate is moved from right to left, ensuring the bolt extending from
the cam arm is in the slot provided in the slide plate. Continue
moving the slide plate to the left until the latching arm is in the
locked position.
Once the control head is set, pull the pull handle on the remote
pull station to assure that the control head operates. If the
control head operates normally, the control head can be reset
as described above. Insert the pull pin into the hole in the slide
plate above the latching arm. Replace the pull station handle,
pull pin, and nylon tie.
Ensure that the gas valve is fully open by ratcheting the gas
valve ratchet wheel.
CAUTION
Before screwing the 16 gram carbon dioxide pilot cartridge into
the actuator, ensure that the actuator has an o-ring washer
installed.
Using a felt-tipped marker, write the date of installation on
the carbon dioxide pilot cartridge. Screw the cartridge into the
control head actuator until hand-tight. Never use a wrench to
tighten the cartridge into the actuator.
Remove the pull pin from the hole in the slide plate and install
the control head cover. Insert the pull pin through the local
manual control handle and into the bushing. Secure the pull pin
with the nylon tie provided.
2. Model ECH3-24/120 Electrical Control Head
Before putting the system into service, all components must be
checked for proper operation. During this checkout, ensure that
the CO2 pilot cartridge is not installed in the control head actua-
tor. Remove the pull pin from the hole in the slide plate.
CAUTION
Make certain to remove the CO2 cartridge. Failure to do so
during testing will result in system actuation.
Testing Thermal Detectors
1. Remove the electric control head cover.
2. Test each detector individually and reset control panel and
recock release mechanism after each test. (Refer to proper
aUTOPULSE control panel reset instructions).
3. Using a heat gun positioned approximately 12 in. (305 mm)
from the detector, apply heat to the detector for about one
minute. Overheating will cause damage to the detector.
applying heat to the detector will cause the control head to
operate or will cause the aUTOPULSE control panel to go
into an alarm condition, and activate the control head. When
the control head operates, the following will take place: a)
The slide plate will move fully to the right; b) The indicator
light on the solenoid monitor will go out; and c) any auxiliary
equipment connected to the dry contacts of the solenoid
monitor and/or the snap-action switch in the control head
will operate. If any of these events fail to occur, the problem
must be investigated and repaired.
4. after all the thermal detectors have cooled, the aUTOPULSE
control panel can be reset (refer to proper aUTOPULSE
control panel reset instructions) and the control head can
be placed in the set position. To set the control head, the
slide plate must be moved from right to left, ensuring the
bolt extending from the cam arm is in the slot provided in the
slide plate. Continue moving the slide plate to the left until
the latching arm is in the locked position.
Testing Remote Pull Station
1. Once the control head is set, pull the pull handle on the
remote pull station to assure that the control head operates.
If the control head operates normally, the control head can
be reset as described in Step 4 in the “Testing Thermal
Detectors” section on this page.
2. Insert the pull pin into the hole in the slide plate above the
latching arm.
3. Replace the pull station handle, pull pin, and break rod.