8-5
September 2004
Argonite
®
Engineered Fire Suppression System
38-KFSARG-000
8-4.3 Installation and Removal
The solenoid valve assemblies for 2900 PSI (200 bar) systems are dismantled and installed
on the cylinder in the following way:
8-4.3.1 DISASSEMBLY
1. Dismantle all interconnecting pilot hoses.
2. Carefully loosen the 36 mm hex nut, used to attach the gauge assembly to the
cylinder, to relieve pressure. (A loud, high-pitched sound will be heard during
the venting. This is caused when the O-ring seal reaches the conical rim in the
connection and releases the trapped pressure.)
3. When the pressure indicated on the pressure gauge has fallen to 0 unthread
the gauge assembly from the cylinder valve.
8-4.3.2 ASSEMBLY
Note: Verify that all cylinders are properly restrained and that the discharge
hose for each cylinder is connected to both the cylinder valve and
system piping prior to reassembly.
1. Ensure the O-ring in the swivel nut is in place and greased.
2. Fit the complete unit on the cylinder valve, adjust gauge so that it is
positioned vertically and tighten the swivel nut by hand until pressure is
indicated on the gauge.
3. Secure swivel nut by the use of a 36 mm wrench. Apply torque 34 to 37 lb.-ft.
(46 to 50 Nm).
Note: Do not turn unit after the swivel nut has been tightened.
4. Check all connections for leaks using a spray leak detection liquid. There
should be no visible leaks.
Note: The pressure gauge unit and the pressure gauge and solenoid valve
assemblies are to be installed on the cylinders as indicated on the
assembly drawing.
5. Do not connect the hose from the solenoid valve to the actuation port until
after the unit has been pressurized and there is no leakage through the free
hose end.
6. Attach the interconnecting pilot hoses between the cylinders. Use a fixed
spanner wrench. Apply torque 15 to 18 lb.-ft. (20 to 25 N-m).
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