Maintenance Manual
18
PEFS F3 Maintenance Manual, Version 1.2, Feb 2018
© Copyright 2017 Chubb Fire & Security Pty Ltd
Cylinder Valve
– Service (Item 11)
WARNING:
The cylinder is a pressure vessel. Do not remove any parts from the cylinder prior to
depressurising the cylinder.
Figure 3
A Valve Service Kit (Part No: 28037) is available for the purpose of servicing the LOP valve.
1. Remove cylinder valve (4) from cylinder.
2. Remove Syphon Tube (5) and Cylinder Neck O-ring (6)
3. Remove the 4 screws and washers (7).
4. Remove the cap (8) and o-ring (9).
5. Remove the piston assembly (10).
6. Inspect and clean piston o-rings (11) and sealing o-ring (15). Replace if they shows signs of wear or damage.
Check to ensure check valve (16) moves freely inside piston, clean and or replace if required. Lubricate
outside diameter o-rings (11) and outside diameter of piston assembly (10) with Molykote 111. Do not lubricate
sealing o-ring (15) and check valve o-ring (16). If retainer (12) was removed, re-fit using Loctite 569 or Loctite
577 on thread.
7. Clean inside of valve. Check for scratches and scoring. Re-install piston assembly (10).
8. Inspect and clean o-ring (9) and replace if it shows signs of wear or damage. Lubricate o-ring (9) with Molykote
111 and fit to cap (8).
9. Re-install cap (8), washers and screws (7) to cylinder valve.
10. Inspect syphon tube (5). Replace if tube has become stiff or is damaged.
11. Inspect and clean Cylinder Neck O-ring (6) and replace if it shows signs of wear or damage. Lubricate with
Molykote 111.
12. Inspect and clean Pressure Indicator (13) and Schrader Valve (14). Replace if faulty or damaged. Use Loctite
577 or Loctite 569 on threads
13. Re-install cylinder valve (4) to cylinder.
5
6
7
8
9
10
11
12
13
14
16
15