Installation manual

SS-3N/AST/STD, SS-3N/AST/WH Installation
12 12/11/07 Bradley Corporation • 215-1494 Rev. E; ECN 07-814
Before attempting to troubleshoot the valve or disassemble the
components, check for the following conditions:
• If stop/check valves are used, make sure that they are fully open.
• Make sure that the hot and cold inlet pipes are connected
properly, and that there are no cross-connections or leaking
stop/check valves.
• Make sure water heater output is at least 20° F above the set
temperature.
Close shut-off valves prior to disassembly and reopen the valves
after inspection and repair is complete.
Troubleshooting – Vernatherm
™
Thermostatic Mixing Valve: Part no. S01-524
9
6
5
4
3
2
1
7
8
Strainer
(173-028)
Valve Body
Spring
Thermostat
Piston
Stem
O-Ring
O-Ring
Cap
Nut 3/8-24
Hex Jam
10
Seal Cup
11
Item Qty. Description
5 1 Thermostat
7 1 O-Ring
8 1 O-Ring
Repair Kit S65-259
Strainer
173-028
Tempered Line Adapter Option: Part no. S39-685
(replaces S01-524 if tempered line is used)
Problem Cause Solution
External
leaks in the
system.
O-rings
have been
damaged.
Replace O-rings. Contact your Bradley representative to order Repair Kit no. S65-259.
Improper water
temperature or
temperature
fluctuation.
Thermostat is
slowly failing
or not working
at all.
Check the thermostat for proper operation:
1. At room temperature (80° F or less) remove the cap and thermostat.
2. Place the thermostat into a container with 115° F water. The pushrod should pop out of the
thermostat approximately 1/10". If pushrod does not pop out, replace the thermostat. Contact your
Bradley representative to order Repair Kit no. S65-259.
Valve
temperature
is not properly
set
Adjust the temperature using a blade screwdriver: Turn the adjustment stem counterclockwise to
increase the temperature or clockwise to decrease the temperature.
Limited
water flow.
Dirt and
debris have
built up in
the valve or
strainer.
1. Ensure hot and cold supplies are connected to the mixing valve and that they have sufficient water
flow.
2. Remove and clean the strainer. If it needs to be replaced, Contact your Bradley representative to
order Bradley part no. 173-028.
3. Check the piston for smooth movement:
A. Remove the valve’s cap and thermostat.
B. Push down on the piston; if the piston does not move freely, clean it as outlined below:
• Remove the thermostat. Lift the piston out with a needle-nose pliers and remove the spring.
• Any brass and stainless steel cleaner may be used. If a suitable cleaner is insufficient to
remove debris, use a 400-grit sandpaper to polish and hone the piston and valve body).
• Snap the spring into the piston (it will detent); reassemble into the valve body. Retest the
piston.
C. If, after a thorough cleaning, the piston does not move freely, the piston must be replaced.
Contact your Bradley representative to order Repair Kit no. S65-259.