Bradley EFX 25/S19-2100 Installation page 7

Installation
Troubleshooting: Piston Disassembly and Cleaning
To prevent injuries, use proper protective equipment for
eyes and skin when using a propane torch.
Remove the valve's top cap and pull out the
A
thermostat. You may use a needle-nose pliers
to remove the thermostat from the valve body if
desired.
Insert a 7/16" dia. rod into the valve until it touches
the top of the pushrod that is attached to the piston
B
Mark the length of the rod inside the valve. Push
the rod until the piston stops and mark the new
length.
If the rod travels less than1/2", the piston is not
moving freely within the liner and they must be
cleaned:
1. Remove the control section assembly, top cap
and thermostat.
C
2. Unthread the liner from the cap (it is glued
together; the o-rings must be removed and heat
should be applied to melt the glue and loosen
the liner).
3. Clean the piston and liner with any cleaner
suitable for brass and stainless steel (400-grit
sandpaper may be used to polish and hone the
piston and liner).
Push the mechanism up and down several times
to make sure the piston moves smoothly and
D
consistently. If it is not consistent, repeat Procedure
C until it moves freely, or replace. Contact your
Bradley representative and ask for Piston/Liner Kit
(part number S65-409).
Bradley • 215-1290 Rev. N; ECN 13-09-002B
EFX 25/S19-2100
Top Cap
Thermostat
The second mark
should be 1/2"
7/16"
higher on the rod
Rod
than the first mark.
Piston Overheat
1/20/2014
Chamber
7