Thermostatic Mixing Valve Troubleshooting; Parts List - Bradley SN2005/AST4 Manuel D'installation

SN2005/AST4, SN2005/AST4-F

Thermostatic Mixing Valve Troubleshooting

Before attempting to troubleshoot the valve or disassemble the components, check for the following
conditions:
• If stop 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 valves.
• Check the hot water heater output to make sure that it is at least 10° F above the set temperature.
Be sure to close the appropriate shut-off valves prior to disassembly of the valve and reopen the valves after
inspection and repair is complete.
Problem
External leaks. Damaged cartridge or O-rings.
Improper water Hot water supply is not 10° above desired set point.
temperature or
temperature
Valve temperature is not properly set.
fluctuation.
Limited water flow. Dirt and debris have built up in the valve or strainer.
1
2
3
4
5
10
Cause
5
4
7
6
12/04/2012
Replace cartridge with part number 269-1927
Increase hot water supply temperature
Adjust the temperature as shown on page 6, step 4.
1. Check to make sure both hot and cold supplies are
connected to the Navigator mixing valve and that
they have water flow.
2. Remove cover and U-clip. Remove the cartridge
and clean the strainer. It is not required to grease
cartridge, however if desired, use silicone grease
only. Do not use grease on check valves.

Parts List

Item Part No.
1 160-463 Cap Screw
2 107-582 Cover
3 269-1927 Thermostatic Cartridge
4 198-014 Check Valve*
5 132-051 Retaining Ring*
6 118-319 Valve Body
7 146-079 U-Clip
* Included with Prepack S65-326
Tempered Line Adapter Option
Part no. S39-804
(replaces S59-4000 if tempered
line is used)
Strainer
(173-028)
Bradley • 215-1066 Rev. H; ECN 12-00-004
Solution
Quantity
Description
S59-4000
1
1
1
2
2
1
1
Installation