SECTION 5 – INSTALLATION INSTRUCTIONS
UL EX3470 ULC EX3470
2014-SEP-01 REV. 11 PAGE 5-21
R-102 Restaurant Fire Suppression Manual
INSTALLING MECHANICAL GAS VALVE (Continued)
8. Install 1/2 in. conduit, and pulley elbow(s) from the mechan-
ical gas valve to regulated release assembly enclosure as
necessary.
9. Beginning at the regulated release assembly, thread the
end of the wire rope through hole provided in air cylinder
rod. See Figure 5-43.
10. Feed end of wire rope through conduit and each pulley
elbow.
Make certain that wire rope rides on top and in center of
pulley sheave. If the 50 ft (15.2 m) wire rope has been
spliced to accommodate a longer run, do not allow the
spliced ends to be within 12 in. (305 mm) of any pulley
elbow or conduit adaptor.
11. Remove side cover on gas valve and thread end of wire
rope through hole in cocking lever. Slide stop sleeve (Part
No. 26317) on to wire rope and crimp. (Use the National
Telephone Supply Company Nicopress Sleeve Tool Stock
No. 51-C-887 or equal to properly crimp stop sleeve.) Make
certain crimp is on top of trigger, with wire rope curled under
lever. See Figure 5-47.
STOP SLEEVE
WIRE ROPE
TRIGGER
FIGURE 5-47
000347
12. With the end of wire rope already threaded through hole in
air cylinder rod, slide stop sleeve (Part No. 26317) onto wire
rope and leave loose. Do not crimp stop sleeve at this time.
See Figure 5-43.
13. Cock mechanical gas valve as shown in Figure 5-48.
Note: A valve cocking tool is available. Order Part No.
416018.
ANSUL MECHANICAL GAS VALVE
TRIGGER
COCKED OPEN POSITION
FIRED CLOSED POSITION
000348
ASCO MECHANICAL GAS VALVE
TRIGGER
COCKED OPEN POSITION
FIRED CLOSED POSITION
000349
FIGURE 5-48
14. Raise air cylinder rod “UP” to its maximum extended posi-
tion. See Figure 5-43.
15. Manually pull wire rope to remove excess slack.
NOTICE
DO NOT ACTUATE THE MECHANICAL
GAS VALVE. Each Mechanical Gas Valve
System must have gas valve cocked and
air cylinder rod extended “UP” to its
maximum extension before completing
next step.
16. Slide stop sleeve against air cylinder rod, make certain all
slack is removed from wire, and crimp stop sleeve. See
Figure 5-43.
17. Cut off any excess wire rope approximately 3/4 in. (19 mm)
from end of stop sleeve.
18. Note: If utilizing a pulley tee to operate either a single
mechanical gas valve from two AUTOMAN releases or
two mechanical gas valves from one air cylinder in an
AUTOMAN release, see Figures 5-49 and 5-50 for instal-
lation instructions. Maximum length of wire rope to each
AUTOMAN release must not exceed 150 ft (45.7 m) and
maximum number of elbows must not exceed 20.
TO AIR CYLINDER IN
“AUTOMAN”
RELEASE NO. 1
TO AIR CYLINDER IN
“AUTOMAN”
RELEASE NO. 2
2 IN. (51 mm) MINIMUM
FROM CRIMP SLEEVE
TO COMPRESSION
FITTING
6 IN. (153 mm) MINIMUM
FROM CRIMP SLEEVE
TO PULLEY TEE
USE TWO OVAL
SLEEVES (PART
NO. 4596)
NO PULLEY ELBOWS
ALLOWED WHERE TWO
WIRE ROPES ARE PRESENT
TWO AIR CYLINDERS – ONE MECHANICAL GAS VALVE
FIGURE 5-49
001091
Summary of Contents for R-102
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