Parts and Service Guide (Prior to February 1, 2013) Sentry Washfountain
Infrared (IR) Part 2 — Solenoid Valve Assembly (24V Transformer)
S07-040 Individual (End), S07-041 Ganged
(Prior to May 2, 2005)
S07-040 Solenoid Valve (Individual)
Used by itself, or is the last one (opposite
end of the water inlet) in a group.
S07-041 Solenoid Valve (Ganged)
Used in a group, except the last in line.
Body is drilled to allow water to pass thru
into the next in line. This valve includes
O-Ring 125-145 to seal to the next valve.
Sentry Washfountain Parts and Service Guide (Prior to February 1, 2013)
Infrared (IR) — Sensor and Solenoid Valve Troubleshooting
If a station is not functioning properly it is most likely either the solenoid valve or the sensor.
Troubleshooting multi station units is fairly easy, as you can swap parts (actually just by changing the wires) and use
the process of elimination to figure out which of the 2 parts is causing the problem.
How the system operates:
1. The transformer sends 24 volts to the sensor.
2. The sensor acts only as a switch.
3. When hands go into the active field of the sensor, the sensor activates and sends a power signal on to the
solenoid valve.
4. The power signal activates and opens the solenoid valve which allows the water to flow to the sprayhead.
The solenoid valve stays open allowing water to flow as long as it is receiving a signal form the sensor
(hands remain in the active field).
5. When hands are removed from the active field, the sensor turns off (note some models have a slight delay
feature built-in.) and shuts off the power signal to the solenoid valve.
CAUTION: Turn off water supplies to unit before troubleshooting.
ProblemCauseSolution
An individual
operating station
fails to shut off and
drips.
An individual
operating station
fails to turn on.
There is debris
trapped between
the diaphragm
and the valve
seat.
A failed coil for
the valve or
loose electrical
connection to the
terminal.
Remove debris between diaphragm and the valve seat.
1. Remove the three #8 Phillips-head screws that hold the solenoid valve assembly
together. Be careful not to lose the armature or spring.
2. Remove the diaphragm. Remove any particles that have been trapped between the
diaphragm and the valve seat. Rinse off the diaphragm and inspect for damage.
Make sure the center orifice and both small side orifices are open.
3. Reassemble in reverse order, being careful not to overtighten the Phillips-head
screws or you may crack the plastic valve body. Tighten until the armature plate
makes contact with the plastic body.
4. Reconnect the wiring per the appropriate diagram on next 4 pages.
Test the station to determine cause.
1. Disconnect the wires from the coil of an adjacent valve. Disconnect the wires from
the problem valve and reconnect to the adjacent valve.
2. Turn on electrical and water supplies to the unit. Pass your hand in front of the
sensor of the problem station, and the adjacent station should turn on.
a. If the adjacent station turns on and cycles normally, replace the coil on the
b. If the adjacent valve fails to turn on, inspect the wires from the sensor cable
problem valve.
and do the following:
• make sure there are no breaks and that the fully insulated disconnect
terminals are firmly crimped in place;
• turn off the electrical and water supplies;
• reconnect to the adjacent valve and turn on the water supplies to the unit;
• pass your hand in front of the sensor. If the station still fails to turn on,
replace the sensor.
Parts and Service Guide (Prior to February 1, 2013) Sentry Washfountain
Air Metering Valve Maintenance
(Prior to May 2, 2005)
Adjust Air Valve Meter Time
The air valve timer is located next to the tube connector
on the air valve body. The timer is capped with a filter to
prevent build-up on the timer. The air valve timing can
be adjusted from 0 to 45 seconds.
1. Remove filter cap and use a screwdriver to tighten or
loosen the timer. Turning the timer clockwise increases
the time; turning the timer counterclockwise decreases
the time.
2. Continue to adjust until the timer is set at desired length.
3. Replace filter cap over the timer.
Tube Connection Leaks
1. Push in the white manual release button while
pulling the tube out to disconnect the tube at the
connector. No tools are needed.
2. To correct a leak, press tubing firmly into the
connector and make sure it is seated.
3. If leak persists, remove tubing from the fitting and
trim the tubing end square with a razor-sharp knife.
If leak continutes, replace the fitting or contact your
Bradley representative for assistance.
Parts and Service Guide (Prior to February 1, 2013) Sentry Washfountain
Thermostatic Mixing Valve Troubleshooting
(Prior to February 1, 2013)
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 crossconnections or leaking stop 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.
ProblemCauseSolution
External leaks.Damaged O-rings.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.
Limited water flow. Dirt and debris have built up in
Thermostat is slowly failing or
not working at all.
Valve temperature is not
properly set.
the valve or strainer.
Check the thermostat for proper operation.
1. At room temperature (80° F or less) remove cap and thermostat.
2. Place thermostat into container with 115° F water. The pushrod should pop
out of the thermostat approximately 1/10".
3. If thermostat pushrod does not pop out, the thermostat must be replaced.
Contact your Bradley representative and ask for Repair Kit (part number
S65-259).
Adjust the temperature.
Check the valve's piston for free and smooth movement,
1. Remove the valve's cap and thermostat
2. Push down on the piston with your finger (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).
Sentry Washfountain Parts and Service Guide (Prior to February 1, 2013)
Vernatherm Thermostatic Mixing Valve S01-116B
Maintenance and Troubleshooting (Prior to May 2, 2005)
* Repair kit S45-049 is pre-packaged and includes
O-Ring, Flip Ring, Power Element and Spring.
Maintenance Instructions
1. Disassemble the Vernatherm™ Valve as
shown, being careful not to damage the
power element. Replace the element, if
necessary.
2. If necessary, remove the old flip ring and
replace with a new ring.
An old or worn flip ring may cause temperature
fluctuation and/or water chatter.
3. Reassemble the power element and valve
body. Apply grease to the main valve slide
and gently ease into position, rotating so that
grease is applied to the flip ring. Do not force
the slide as this may push the flip ring from
its position. To test, rotate the slide; a slight
drag should be felt when correctly installed.
4. Reassemble the valve.
Service Suggestions
Body
S27-029
Power Element*
S27-019
Flip Ring*
125-015
Valve Slide
S01-039
Spring*
135-008
O-Ring*
125-001CH
Cover
107-261B
Screw
160-175
When servicing the Vernatherm™ valve, make sure it is installed in the correct position. The most common error that
occurs is when the valve is installed in the reversed position, that is, the hot line is connected to the cold line and the
cold is connected to the hot.
A red ring is painted on the hot side of the valve.
The table below lists conditions that occur when the valve is installed correctly, and when it is in the reversed position.
IfThen
Valve Position isHot SupplyCold SupplyValve Delivers
Sentry Washfountain Parts and Service Guide (Prior to February 1, 2013)
Care and Cleaning of Stainless Steel Sentry Washfountains
Stainless steel is extremely durable, and maintenance is simple and inexpensive. Proper care, particularly under
corrosive conditions, is essential. Follow the cleaning instructions listed below:
• Ordinary deposits of dirt and grease are quickly removed with soap and water. Whenever possible, the
metal should be thoroughly rinsed and dried after washing. To remove tightly adhering deposits, use
stainless steel polishing powder. In all cases, rub in the direction of the stainless steel grain.
Never use ordinary steel wool or steel brushes on stainless steel. Always use stainless steel wool or stainless
steel brushes.
• Avoid prolonged contact with chlorides, bromides, thiocyanates, and iodides on stainless steel equipment,
especially if acid conditions exist.
• Do not permit salty solutions to evaporate and dry on stainless steel.
• The appearance of rust streaks on stainless steel leads to the belief that the stainless steel is rusting. Look
for the actual source of the rust in some iron or steel particles which may be touching, but not actually a
part of the stainless steel structure. NOTE: Strongly acidic or caustic cleaners may attack the steel causing
a reddish film to appear. The use of these cleaners should be avoided.
Sentry Washfountain Parts and Service Guide (Prior to February 1, 2013)
Soap System
Soap Recommendations
Quality soap dispensers require good quality soap and periodic maintenance to properly operate. Bradley soap
dispensers will provide dependable, consistent operation over the long term when soap with reasonable viscosity and
pH levels are used and when a minimal amount of periodic maintenance is performed on the valves.
Soap thickness is determined by a measurement called viscosity. Soap viscosity should be between 100 cps
(centerpoise) and 2500 cps for all Bradley soap dispensers. Thinner soaps are perceived by the users as being
"watered down" so users tend to take more than they need, resulting in waste. Thick soaps flow slower and inhibit
the "flushing" action of the valves, which allows the soap to congeal in the valve and cause clogs.
The pH (acid) level of the soap should be in the range of 6.5 to 8.5. More acidic soaps (pH levels lower than 6.5)
will corrode metal parts (even stainless steel!!) and degrade rubber and plastic components. They will also cause
skin irritation. Most inexpensive soaps (typically the pink lotion type) fall into this acidic category and will eventually cause valve failure and metal corrosion. Base soaps (pH levels higher than 8.5) will cause swelling or
degradation of rubber and plastic parts and skin irritation.
Generally, any quality soap meeting the viscosity and pH guidelines above will work well with Bradley soap
dispensers. PCMX or Isapropanol based antibacterial soaps (within viscosity and pH limits) will also work with
Bradley dispensers. Soaps satisfying these basic guidelines will provide consistent flow and reduce clogs.
Most soap dispenser problems are caused by soap that is too thick or corrosive, or by a lack of maintenance. Many
soaps come in concentrate form which must be diluted with water. Often, the soap is improperly diluted or used
straight out of the bottle, which causes clogging and valve failure. If proper soap is being used, valves that have
never been cleaned are usually the source of dispensing problems. Bradley has entered into an agreement with
Champion Brand Products to provide additional customer service for purchasers of our dispensers regarding soap
issues. They are very helpful and can get to the bottom of almost any soap dispenser related problem. They also sell
an excellent "Bradley approved" soap. Please see Soap Instruction Sheet 215-1286 for details about soap valve
cleaning or how to contact Champion. With proper maintenance and soap, Bradley dispensers will provide long term,
trouble free operation.
Soap Dispenser Maintenance Instructions for Sentry Washfountains
Bradley soap dispensers will provide dependable, consistent operation over the long term when the proper soap is
used and when a minimal amount of periodic maintenance is performed on the valves. Valves must be maintained
(cleaned) to function properly.
To ensure proper operation of your soap dispenser, follow these instructions:
• Once per month, remove the cap from the soap tank and insert the draw tube (below the cap) into hot water
and soak it for 30 minutes.
• Push valve at least 20 times while it is soaking.
• Flush soap reservoir with hot water while valve is soaking.
In cases of extreme clogging, the valve should be disassembled and the parts should be soaked in hot water or
cleaning solution to restore proper functioning. Soap dispensers that will not be used for extended periods of time
(schools during summer break, etc.) should be drained, cleaned and left empty until put back into service. Soap left
on the outside of dispensers can cause discoloration and corrosion of the reservoir (even on stainless steel units). All
soap should be wiped or scrubbed off daily, then the outside of the dispenser should be rinsed with clear water and
dried with a soft cloth.