SECTION 8 – MAINTENANCE EXAMINATION
UL EX3470 ULC EX3470
2014-SEP-01 REV. 11 PAGE 8-9
R-102 Restaurant Fire Suppression Manual
12-YEAR MAINTENANCE EXAMINATION (Continued)
Step 14 (Continued)
c. Install either a nitrogen or CO
2
cartridge into release
mechanism and each regulated actuator provided with the
system. (Cartridge should be conditioned to approximately
70 °F (21 °C) before test.)
NOTICE
Before continuing with Step d, make
certain valve on test kit is closed.
d. Remove lock bar or lock pin and operate remote manual
pull station to actuate the regulated release and supply
pressure to each test kit.
Two styles of regulators are used with the R-102 release mech-
anisms. The diaphragm style (see Figure 8-15) was used in
R-102 systems up to approximately 1988. The piston style (see
Figure 8-15) has been used since 1988. Each style requires a
slightly different flow test procedure. Use the appropriate flow
test procedure as stated in Step e.
DIAPHRAGM STYLE PISTON STYLE
(USED UNTIL 1988) (USED AFTER 1988)
FIGURE 8-15
002301
e. Flow test each regulator by completing the following
steps:
Diaphragm Style – The correct pressure should read 90
to 110 psi (6.2 to 7.6 bar) with the valve on the test kit
closed and 80 psi (5.5 bar) with the valve on the test kit
opened. Keep the valve opened to completely empty the
pressure cartridge after pressure test has been verified.
Piston Style – Open the valve on the regulator test kit.
The correct pressure should read between 95 to 125 psi
(6.6 to 8.6 bar). Keep the valve open to completely empty
the pressure cartridge.
If necessary, continue to flow test at each additional regu-
lated actuator. Test each regulated actuator by repeating
Step e.
f. Cock release mechanism using cocking lever (Part No.
14995 or 435603/Part No. 441042 or 441041) and insert
lock bar (Part No. 14985) or lock pin (Part No. 438031).
g. Remove empty nitrogen cartridge(s) from release mech-
anism and each regulated actuator.
h. Remove test kit(s) from release mechanism and each
regulated actuator.
i. If regulator test was not successful, replace regulator.
j. Reconnect all expellant gas lines.
k. Reset all additional equipment that was operated by
release mechanism.
15. Examine threads on each adaptor and tank collar for nicks,
burrs, or cross-threading. Clean and coat o-ring with a good
grade of extreme temperature grease. Make certain burst-
ing disc is in place and silver side is away from tank. See
Figure 8-16.
O-RING
FIGURE 8-16
000364
16. Examine pick-up tube for signs of damage or corrosion.
Replace assembly if needed.
17. Refill each tank with 1.5 (5.8 L) or 3.0 (11.6 L) gallons
of only new ANSULEX Low pH Liquid Fire Suppressant.
Note: Use a funnel with a screen to stop any foreign
material from entering the tank.
CAUTION
During filling, the agent temperature should be 60 °F
to 80 °F (16 °C to 27 °C). DO NOT FILL WITH COLD
AGENT. Refer to the “Installation” section, Page 5-3 for
maximum fill heights for ANSULEX Low pH agent storage
tanks. DO NOT OVERFILL. Overfilling may result in
agent entering gas hose and regulator, potentially causing
system malfunction.
18. Clean seating surface and return each adaptor/tube assem-
bly to tank. Firmly tighten.
NOTICE
Do not reinstall any tank at this time.
19. Remove blow-off caps from nozzles. Inspect each blow-off
cap and replace if deteriorated. On older style metal blow-
off caps with spring clips, make certain spring clip rotates
freely on cap. On newer metal blow-off caps, make certain
integral o-ring is intact and undamaged. If there are signs of
deterioration, replace cap(s).
NOTICE
Rubber blow-off caps that have been
installed in the system for one year or
more must be replaced.
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