Post-Discharge Maintenance
06-236115-001
6-3
October 2014
6-2.3
Valve Disassembly (3-inch Valve)
Note: Refer to Figure 6-3 and Table 6-3 for items.
1. Remove the valve with the siphon tube from the cylinder.
2. Remove the cylinder neck O-ring and replace it. Before reinstalling the O-ring, apply lubri-
cant.
3. Remove the valve cap, spring and piston assembly.
Note: Remove all internal components of the HFC-227ea valve from the top of the assembly.
However, if there is excessive piston O-ring friction, the siphon tube may have to be
removed and the piston assembly pressed out from the bottom.
4. Remove the O-rings and replace them. Before reinstalling the O-rings, apply lubricant.
5. Ensure that the O-ring protrudes a minimum of 0.020 in. (0.5 mm) above the conical seat-
ing surface of the piston assembly. Replace this O-ring by removing the seat retainer. Be-
fore reassembling, apply lubricant to the O-ring.
6. Examine the pilot check for any evidence of bending or other damage. Depress the check
and make certain it snaps back freely. Replace pilot check if necessary.
Figure 6-3. 3-inch Valve Assembly
WARNING
Before removing the valve, make sure that all pressure has been relieved from
the cylinder. To relieve any remaining pressure, ensure the cylinder is secured
then depress the pressure check in the Supervisory Pressure Switch.
Table 6-3. 3-inch Valve Components
Description
Part Number
O-ring, Cap
WK-566102-410
O-ring, Piston
WK-566103-370
O-ring, Seat
WK-566103-400
O-ring, Neck
WK-566103-470
O-ring, Inner Piston
WK-566101-170
Back-up Ring
WK-554003-400
Valve Cap
Piston O-Ring
WK-566103-370
Back-Up Teflon Ring
WK-554003-400
Retainer O-Ring
WK-566103-400
Retainer
06-235924-001
Inner Piston O-Ring
WK-566101-170
Neck O-Ring
WK-566103-470
Refill Part
(½ inch NPT Thread)
Safety Cap
Piston
Spring
Valve Cap O-Ring
WK-566102-410
Pilot Check
WK-923066-000
Pilot Check Spring
WF-230640-000
Summary of Contents for ECS
Page 3: ......
Page 9: ...THIS PAGE INTENTIONALLY LEFT BLANK October 2014 vi 06 236115 001 ...
Page 19: ...October 2014 xvi 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 25: ...October 2014 1 6 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 63: ...Component Description October 2014 3 36 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 103: ...Design and Installation October 2014 4 40 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 137: ...Post Discharge Maintenance October 2014 6 18 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 148: ...P N 06 236115 001 A 1 October 2014 APPENDIX A MATERIAL SAFETY DATASHEETS ...
Page 167: ...October 2014 A 2 P N 06 236115 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 168: ......
Page 171: ......
Page 173: ...July 2016 ii 06 236115 003 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 186: ......
Page 189: ......
Page 191: ...August 2016 ii 06 237553 001 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 198: ......
Page 201: ......
Page 203: ...May 2016 ii 06 236115 004 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 211: ...May 2016 8 06 236115 004 THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 212: ......