101
HELIX™
Manual (P/N 26291)
Chapter 6: Recharge
Rev A (February 2018)
HELIX™
PCU Fire Suppression System
Valve Reassembly:
12.
On new Valve Stem (P/N 10095), lubricate the small O
-
ring with Visilox (P/N L0172) or
equivalent silicone style lubricant (See Figure 6.2.4c).
WARNING: Do not lubricate the Valve Stem seal!
13.
Reinstall Valve Stem, Spring (P/N 10097) and Washer (P/N 10102) (See Figure 6.2.4a). Apply
one drop of medium grade thread locking compound to Screw threads (P/N 10732). Compress
washer well below top of Agent Cylinder Valve while holding the bottom of the Valve Stem Cup
with a 5/16” [8 mm] open end wrench and install Valve Stem Screw using a 1/8” [3 mm] hex
wrench. Release spring and washer and torque Valve Stem Screw securely to 25 in
-
lbs [2.82
Nm]. Press down on the stem assembly verifying that it travels freely to open/close the Agent
Cylinder Valve.
14.
Reinstall Downtube into Agent Cylinder Valve: Apply medium grade thread locking compound
to Downtube retainer threads. Thread the Downtube retainer into the valve and torque to 75 ft
-
lbs [101.6 Nm].
15.
Remove Quad Ring (P/N 05239)
and replace with a new one. Lubricate the Quad Ring with
Visilox (P/N L0172) or equivalent silicone style lubricant (See Figure 6.2.4a).
6.2.5 Agent Cylinder Refill
DO NOT MIX FIRE SUPPRESSION AGENTS WITH EACH OTHER OR WITH ANY OTHER
AGENTS OR CHEMICALS! FAILURE TO FOLLOW THESE GUIDELINES COULD RESULT IN
ADVERSE SYSTEM PERFORMANCE, PROPERTY DAMAGE, SERIOUS BODILY INJURY AND
POSSIBLE DEATH! CONSULT THE SAFETY DATA SHEET (SDS) FOUND ON AMEREX
WEBSITE WWW.AMEREX
-
FIRE.COM FOR THE PARTICULAR AGENT BEING USED.
•
After completely emptying and vacuuming the Agent Cylinder (See Section 6.2.4), fill the Agent
Cylinder with the appropriate volume of Dry Chemical Agent (See Table 2.1.1). Fill only with
amount shown in these tables! ABC Dry Chemical Recharge Pail (P/N 03736) is approximately
50 pounds in weight and should be used for Agent Cylinder refill. Vertical Agent Cylinders must
be filled through the Agent Cylinder Collar.
6.2.6 Agent Cylinder Valve Installation & Agent Cylinder Charging
Perform the following for Agent Cylinder Valve installation and Agent Cylinder charging instructions:
1.
Clean any residual Dry Chemical from the Agent Cylinder Collar. Reinstall the reworked and
assembled Agent Cylinder Valve into the Agent Cylinder with use of the 2 ½” Pump Wrench.
Ensure that a new lubricated Quad Ring (P/
N 05239) is in place on bottom of Agent Cylinder
Valve. Torque Agent Cylinder Valve to 30
-
40 ft
-
lbs [40
-
54 Nm].
2.
Remove the Anti
-
Recoil Plate (P/N 10646) from the Agent Cylinder Valve discharge port (See
Figure 2.1a). Attach the Recharge Adapter (P/N 10136) in its place using same bolts/nuts (See
Figure 6.1.1).
3.
Remove the Shipping Plate (P/N 10099) from the top of the Agent Cylinder Valve (See Figure
2.1a). Attach the Tee Handle (P/N 10134) in its place using same bolts/nuts (See Figure 6.1.4).
Figure 6.2.4c
VALVE STEM SEAL
DO NOT LUBRICATE
SMALL O
-
RING
LUBRICATE
