SECTION 6 – SySTEm REChaRgE
UL EX3830 ULC EX3830
2014-NOV-10 REV. 06 PagE 6-1
KITCHEN KNIGHT II Restaurant Fire Suppression Manual
gENERaL
The recharge information listed in this section deals with the
limitations and parameters of this pre-engineered system.
Those individuals responsible for the recharge of the KITCHEN
KNIgHT II system must be trained and hold a current PYRO-
CHEM certificate in a KITCHEN KNIgHT II training program.
SySTEm CLEaNUP
!
CaUTION
Before attempting any cleanup, make certain that all fuel
sources to the equipment to be cleaned have been shut off.
Make certain that the exhaust hood and all appliance electrical
controls have been de-energized to avoid any chance of elec-
trical shock resulting from the cleaning process of electrically
conductive alkaline liquid agent and/or its residue.
Make certain all surfaces to be cleaned have cooled down to
room temperature.
Do not use water to clean any appliances that contain hot
grease or cooking oils. Doing so may result in violent steaming
and/or spattering.
SySTEm REChaRgE
NOTICE
Determine the cause of system discharge
and correct immediately before performing
system recharge.
1. after discharge, inspect the entire system for mechanical
damage. If the tank has sustained any mechanical damage,
it must be hydrostatically tested before refilling.
2. Disconnect the 1/4 in. actuation tubing or the control head
from the top of the tank valve.
3. Relieve the pressure from the top chamber of the tank valve
by depressing the core of the valve in the valve cap assem-
bly. By performing this operation, the valve will close.
4. Slowly remove the valve and siphon tube. If there is any
residual pressure left in the tank, it will bleed out through the
pressure relief slot in the valve threads.
5.
!
CaUTION
Precautions must be taken when handling and transfer-
ring wet agents as they are cautic in nature. goggles
must be worn at all tmes. If any agent gets into the eyes,
they should be flushed with clean water for 15 minutes
and a physician contacted. If any agent contacts the skin,
it should be flushed with cold water to prevent irritation.
The agent is electrically conductive. Care must be taken
to thoroughly clean up any agent discharged around elec-
trical appliances before turning the power on.
The complete piping system must be flushed after a
discharge.
Flushing Concentrate (Part No. 79656) must be
used when flushing the system. The concentrate is shipped
in a 32 oz (0.95 L) container. a PCL-160 tank requires half
of a container. a PCL-300 tank requires one container of
concentrate. a PCL-460 requires one and a half containers,
and a PCL-600 requires two containers. To prepare the
system for flushing:
a. Pour the required amount of flushing concentrate into
the tank.
b. Fill the tank approximately half full with warm, clear
water. agitate the tank for a few seconds and then add
more warm water to bring the level to the required fill line
using the Measuring Stick (Part No. 551039).
c. Reinstall valve and pickup tube. Hand tighten to 12.5
ft-lb (16.9 Nm) maximum torque.
CaUTION
Do NOT use a wrench or other tool to tighten the valve.
Do NOT use a pipe extension on the valve outlet for the
purpose of providing additional torque.
d. Pressurize tank to 225 psi (15.5 bar) at 70 °F (21 °C) and
reinstall to piping network.
6. With nozzles in place, attach control head and manually
actuate the tank. allow the tank to completely discharge
through the piping network.
7. after the discharge is completed, the entire piping network
must be blown out with air or nitrogen until no more mist is
visual coming out of the nozzles.
8. Remove, clean, and reinstall all nozzles.
9. Remove the tank from the system. Slowly remove the valve
and siphon. If there is any residual pressure left in the tank,
it will bleed out through the pressure relief slot in the valve
threads. The valve and pressure regulator (located in outlet
of valve) must be cleaned and rebuilt after each discharge.
To rebuild the valve, use Rebuilding Kit (Part No. 550698).
To rebuild the pressure regulator, use Rebuilding Kit (Part
No. 551061). Each kit includes an instruction sheet listing
detailed rebuilding instructions.
