Installation manual

ManualsBrandsBradley ManualsLawn and GardenTDB3108

Installation TDB3108, WF3208

Bradley • 215-1577 Rev. B; ECN 13-00-001 4/3/2013 19

Spring

Thermostat

Piston

Stem

O-Ring

Cap

Nut 3/8-24 Hex Jam

Seal Cup

alve Body

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.

• Checkthehotwaterheateroutputtomakesure

that it is at least 20° 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 Cause Solution

Limited water flow Dirt and debris

have built up in the

valve or strainer.

Remove and clean strainer. If strainer needs to be replaced, order Bradley part no. 173-028.

Check the piston for smooth movement.

1. Removethevalve’scapandthermostat.

2. Pushdownonthepistonwithyournger(thepistonshouldmovefreely).Ifthemovementisnot

as it should be, the piston needs to be cleaned. Follow the method outlined below for cleaning

the piston and valve body:

• Removethethermostat.

• Liftthepistonoutwithaneedle-nosepliersandremovethespring.

• Anycleanersuitableforbrassandstainlesssteelmaybeused(ifcleaningwithsuitablecleaner

is not sufficient to remove debris, a 400-grit sandpaper may be used to polish and hone the

pistonandvalvebody).

• Snapspringintopiston(willdetent)andreassembleintothevalvebody.Retestthepiston.

3. If, after a thorough cleaning, the piston does not move freely, the piston must be replaced.

ContactyourBradleyrepresentativeandaskforRepairKit(partnumberS65-259).

External leaks in

the system

O-rings have been

damaged

Replace o-rings where necessary. For replacement of the O-rings, contact your Bradley

representativeandaskforRepairKit(partnumber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 thermostat into a container with 115° F water. The pushrod should pop out of the

thermostatapproximately1/10".

3. Ifthermostatpushroddoesnotpopout,replacethermostat(part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.

Troubleshooting Vernatherm Thermostatic Mixing Valve (S01-525) — Repair Kit S65-259

Item Part No. Qty. Description

5 S39-413 1 Thermostat

7 125-001BX 1 O-Ring

8 125-157 1 O-Ring

Valve Repair Kit S65-259