10 Sunnen Drive
St. Louis, MO 63143
telephone: 314-678-6336
fax: 314-781-2714
www.bloomfieldworldwide.com
628
OWNERS MANUAL
for
AUTOMATIC
COFFEE / TEA
BREWERS
MODEL:
8781A
Includes:
Installation
Operation
Use & Care
Servicing Instructions
Model 8781A Brewer
with optional
8799 3 gallon
Iced Tea Dispenser
p/n 76201 Rev. I ECN-13387 M628 150315
WARRANTY STATEMENT
All electrical equipment manufactured by WELLS
BLOOMFIELD, LLC is warranted against defects in materials
and workmanship for a period of one year from the date of
original installation or eighteen (18) months from the date of
shipment from our factory, whichever comes first, and is for
the benefit of the original purchaser, except that:
a. airpots carry a 30 day parts warranty only.
b. dispensers; i.e., tea and coffee carry a 90 days parts
warranty only, excludes decanters.
THE FOREGOING OBLIGATION IS EXPRESSLY GIVEN IN
LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, WHICH ARE HEREBY EXCLUDED.
WELLS BLOOMFIELD, LLC
FOR INDIRECT, INCIDENTAL OR
DAMAGES OR LOSSES FROM ANY CAUSE
WHATSOEVER.
This warranty is void if it is determined that upon inspection by
an Authorized Service Agency that the equipment has been
modified, misused, misapplied, improperly installed, or
damaged in transit or by fire, flood or act of God.
SHALL
NOT BE LIABLE
CONSEQUENTIAL
It also does not apply if the serial nameplate has been
removed or unauthorized service personnel perform service.
The prices charged by Bloomfield Industries for its products
are based upon the limitations in this warranty. Seller’s
obligation under this warranty is limited to the repair of defects
without charge by a Bloomfield Authorized Service Agency or
one of its sub-agencies. This service will be provided on
customer’s premises for non-portable models. Portable
models (a device with a cord and plug) must be taken or
shipped to the closest Authorized Service Agency, transportation charges prepaid, for services.
In addition to restrictions contained in this warranty, specific
limitations are shown below (Additional Warranty Exclusions).
Bloomfield Industries Authorized Service Agencies are located
in principal cities.
This warranty is valid in the United States and void elsewhere.
Please consult your classified telephone directory or your food
service equipment dealer; or, for information and other details
concerning warranty, write to:
Phone: (314) 678-6336 Fax: (314) 781-2714
SERVICE POLICY AND PROCEDURE GUIDE
ADDITIONAL WARRANTY EXCLUSIONS
1. Resetting of safety thermostats, circuit breakers,
overload protectors, or fuse replacements unless
warranted conditions are the cause.
2. All problems due to operation at voltages other than
specified on equipment nameplates; conversion to
correct voltage must be the customer’s responsibility.
3. All problems due to electrical connections not made in
accordance with electrical code requirements and
wiring diagrams supplied with the equipment.
4. Replacement of items subject to normal wear, to include
such items as knobs and light bulbs. Normal maintenance
functions including adjustment of thermostats, microswitches,
and replacement of fuses and indicating lights are not
covered under warranty.
5. All problems due to inadequate water supply, such as
fluctuating, or high or low water pressure.
6. All problems due to mineral/calcium deposits, or
contamination from chlorides/chlorines. De-liming is
considered a preventative maintenance function and is
not covered by warranty.
7. Full use, care and maintenance instructions are supplied
with each machine. Those miscellaneous adjustments
noted are customer responsibility. Proper attention will
prolong the life of the machine.
8. Travel mileage is limited to sixty (60) miles from an
authorized Service Agency or one of its sub-agencies.
9. All labor shall be performed during normal working hours.
Overtime premium shall be charged to the customer.
10. All genuine Bloomfield replacement parts are warranted
for ninety (90) days from date of purchase on non warranted equipment. Any use of non-genuine
Bloomfield parts completely voids any warranty.
11. Installation, labor and job check-out are not considered
warranty.
12. Charges incurred by delays, waiting time or operating
restrictions that hinder the service technicians ability
to perform services are not covered by warranty.
This includes institutional and correctional facilities.
Service Parts Department
Wells Bloomfield, LLC
10 Sunnen Drive, St. Louis, MO 63143
M628 76201 Owners Manual 8781A Tea Brewer
SHIPPING DAMAGE CLAIMS PROCEDURE
NOTE: For your protection, please note that equipment in
this shipment was carefully inspected and packaged by
skilled personnel before leaving the factory.
Upon acceptance of this shipment, the transportation
company assumes full responsibility for its safe delivery.
IF SHIPMENT ARRIVES DAMAGED:
1. VISIBLE LOSS OR DAMAGE: Be certain that any
visible loss or damage is noted on the freight bill
or express receipt, and that the note of loss or damage
is signed by the delivery person.
2. FILE CLAIM FOR DAMAGE IMMEDIATELY:
Regardless of the extent of the damage.
3. CONCEALED LOSS OR DAMAGE: if damage is
unnoticed until the merchandise is unpacked, notify the
transportation company or carrier immediately, and file
“CONCEALED DAMAGE” claim with them. This
must be done within fifteen (15) days from the date the
delivery was made to you. Be sure to retain the
container for inspection.
Wells Bloomfield cannot assume liability for damage or loss
incurred in transit. We will, however, at your request, supply
you with the necessary documents to support your claim.
xi
TABLE OF CONTENTS
WARRANTY STATEMENT xi
SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 3
INSTALLATION INSTRUCTIONS 4
OPERATION 6
BREWING COFFEE 9
BREWING TEA 10
CLEANING INSTRUCTIONS 11
TROUBLESHOOTING SUGGESTIONS 12
SERVICING INSTRUCTIONS 14
Deliming Instructions 19
EXPLODED VIEW & PARTS LIST 20
SERVICE KITS 22
WIRING DIAGRAMS 23
SPECIFICATIONS
MODEL
VOLTS
1ø
WATTS
AMPS
1ø
Thank You for purchasing this
Wells Bloomfield appliance.
Proper installation, professional
operation and consistent
maintenance of this appliance will
ensure that it gives you the very
best performance and a long,
economical service life.
This manual contains the
information needed to properly
install this appliance, and to use,
care for and maintain or repair the
appliance in a manner which will
ensure its optimum performance.
POWER SUPPLY
CORD
8781A 120 VAC 1500 W 12.5 A 6' with NEMA 5-15P
M628 76201 Owners Manual 8781A Tea Brewer
APPLICABILITY
This manual applies to the following Wells Bloomfield product:
8781A
1
FEATURES AND OPERATING CONTROLS
2
M628 76201 Owners Manual 8781A Tea Brewer
PRECAUTIONS AND GENERAL INFORMATION
WARNING: ELECTRIC SHOCK HAZARD
All servicing requiring access to non-insulated components must be performed by qualified
service personnel. Do not open any access panels which require the use of tools.
Failure to heed this warning can result in electrical shock.
WARNING: INJURY HAZARD
All installation procedures must be performed by qualified personnel with full knowledge of all
applicable electrical and plumbing codes. Failure could result in property damage and
personal injury.
WARNING: ELECTRIC SHOCK HAZARD
Brewer must be properly grounded to prevent possible shock hazard. DO NOT assume a
plumbing line will provide such a ground. Electrical shock will cause death or se rious Injury.
WARNING: BURN HAZARD
This appliance dispenses very hot liquid. Serious bodily injury from scalding can occur from
contact with dispensed liquids.
This appliance is intended for commercial use only.
This appliance is intended for use to brew beverage products for
human consumption. No other use is recommended or
authorized by the manufacturer or its agents.
This appliance is intended for use in commercial establishments,
where all operators are familiar with the appliance use,
limitations and associated hazards. Operating instructions and
warnings must be read and understood by all operators and
users.
Except as noted, this piece of equipment is made in the USA
and has American sizes on hardware. All metric conversions
are approximate and can vary in size.
The following trouble shooting, component views and parts lists
are included for general reference, and are intended for use by
qualified service personnel.
This manual should be considered a permanent part of this
appliance. The manual must remain with the appliance if it is
sold or moved to another location.
This brewer is listed under UL file E9253.
M628 76201 Owners Manual 8781A Tea Brewer
This brewer meets
operated and maintained in accordance with the enclosed
instructions.
Standard 4 only when installed,
CAUTION:
EQUIPMENT DAMAGE
DO NOT plug in or energize this
appliance until all Installation
Instructions are read and followed.
Damage to the Brewer will occur if
these instructions are not followed.
CAUTION:
BURN HAZARD
Exposed surfaces of the
appliance, brew chamber and
decanter or dispenser may be
HOT to the touch, and can cause
serious burns.
AGENCY LISTING INFORMATION
E9253
STD 4
3
INSTALLATION
READ THIS CAREFULLY BEFORE STARTING THE INSTALLATION
IMPORTANT:
To enable the installer to make
a quality installation and to minimize installation time, the following suggestions and tests
should be done before the
actual unit installation is started:
CAUTION:
EQUIPMENT DAMAGE
DO NOT plug in or energize this
appliance until all Installation
Instructions are read and
followed. Damage to the Brewer will occur if these
instructions are not followed.
CAUTION:
UNSTABLE
It is very important for safety
and for proper operation that the
brewer is level and stable when
standing in its final operating
position. Provided adjustable,
non-skid legs must be installed
at each corner of the unit.
Failure to do so will result in
movement of the brewer which
can cause personal Injury and/
or damage to brewer.
NOTE: Water supply inlet line
must meet certain minimum
criteria to insure successful
operation of the brewer.
Bloomfield recommends 1/4"
copper tubing for installation of
less than 12 feet and 3/8" for
more than 12 feet from a 1/2"
water supply line.
EQUIPMENT HAZARD
Unpack the unit. Inspect all components for completeness and
condition. Ensure that all packing materials have been removed
from the unit.
Verify that the Spray Head Gasket and Spray Disk are properly
installed.
LEVELING THE UNIT
Verify that an adjustable leg is installed at each corner of the
brewer, and that a rubber foot is installed on each leg.
Set Brewer in its operating location. Level the Brewer. A spirit
level should be placed on the top of the unit, at the edge, as a
guide when making level adjustments.
Level the unit from left to right and front to back by turning the
adjustable feet. Be sure all four feet touch the counter to prevent
tipping.
PLUMBER’S INSTALLATION INSTRUCTIONS
Brewer should be connected to a POTABLE WATER, COLD
WATER line. Flush water line before connecting to Brewer.
DO NOT use a saddle valve with a self-piercing tap for the water
line connection. Such a tap can become restricted by waterline
debris. For systems that must use a saddle tap, shut off the main
water supply and drill a 3/16” (minimum) tap for the saddle
connection, in order to insure an ample water supply. Remember
to flush the line prior to installing the saddle.
The brewer must be installed on a water line with average
pressure between 20 PSI and 90 PSI. If your water pressure
exceeds 90 PSI at anytime, a pressure regulator must be
installed in the water supply line to limit the pressure to not more
than 90 PSI in order to avoid damage to lines and solenoid.
A water shut-off valve should be installed on the incoming water
line in a convenient location (Use a low restriction type valve,
such as a 1/4-turn ball valve, to avoid loss of water flow thru the
valve.
M628 76201 Owners Manual 8781A Tea Brewer
4
INSTALLATION (continued)
NSF requires that the brewer be able to be moved for cleaning
underneath. Loops of copper tubing will satisfy this requirement.
See Figure 2 below.
Fig. 2 Water Supply Installation
In some areas, local codes require a backflow preventer (check
valve) to be installed on the inlet water line. If a backflow
preventer is used, you must install a water hammer arrester in
the incoming line, between the backflow preventer and the brewer inlet, as far away from the brewer as space will allow. This will
relieve the excessive back pressures that can cause faucet leaks
and solenoid malfunctions.
ELECTRICIAN’S INSTALLATION INSTRUCTIONS
REFER TO ELECTRICAL SPECIFICATIONS - Page 1
Check the nameplate to determine correct electrical service
required for the brewer to be installed.
IMPORTANT: Before connecting to electricity, make sure
brewer is connected to the water supply.
Model 8781A is equipped with a cord and plug. It requires a 115
- 125 volt 20 amp circuit (50/60 Hz, 2 wire plus ground, with NEMA 5-15R or 5-20R Receptacle).
M628 76201 Owners Manual 8781A Tea Brewer
NOTE: This equipment must be
installed to comply with all
applicable federal, state and
local plumbing codes and
ordinances.
WARNING:
SHOCK HAZARD
Brewer must be properly
grounded to prevent possible
shock hazard. DO NOT
assume a plumbing line will
provide such a ground.
Electrical shock will cause death
or serious injury.
IMPORTANT:
Supply power must match
nameplate for voltage and
phase. Connecting to the
wrong voltage will damage the
brewer or result in decreased
performance. Such damage is
not covered by warranty.
IMPORTANT: Do not connect
brewer to electrical power until
you are ready to fill the tank.
See instructions at left.
GROUND
PIN
NEMA 5-15P
PLUG
IMPORTANT: The ground
prong of the plug is part of a
system designed to protect you
from electrical shock in the
event of internal damage. Never cut off the ground prong nor
twist a blade to fit an existing
receptacle. Contact a licensed
electrician to install the proper
circuit and receptacle.
NEMA 5-15R
RECEPT ACLE
5
OPERATION
Fig. 3 Brewer Operation Diagram
M628 76201 Owners Manual 8781A Tea Brewer
6
OPERATION (continued)
A. START-UP
For initial start-up, or if the brewer has not been used for an
extended period of time:
Be sure spray disk and brew gasket are properly installed in the
brew head.
Be sure the water supply is properly connected and the water
supply valve is turned ON.
Be sure the WATER TANK IS FILLED.
IMPORTANT: Fill the water tank before energizing this unit:
1. Insert the "COFFEE" brew chamber (empty) and place an empty
container in place under the brew chamber.
2. Be sure the TANK HEATER SWITCH on back of brewer "
3. Plug the unit into an appropriate receptacle.
OFF".
4. Press COFFEE/TEA switch to "COFFEE". Press BREW SWITCH.
Water will begin filling the tank. When the water fill stops, press the
switch again. Repeat until water flows from the brew chamber.
This will usually require running three (3) cycles.
5. When water starts to flow from the brew chamber, tank is full.
When all dripping has stopped, discard all water in container.
6. Turn TANK HEAT SWITCH "
ON". The heating elements will begin
heating the water in the tank. When the water has reached the
proper temperature, the “READY TO BREW” light will glow.
B. OPERATIONAL NOTES
1. COFFEE
a. When brewing coffee, be sure to use the "coffee" brew
chamber (uses the tall rack, and does not state "tea only" on
the outside of the shell).
b. Press the COFFEE/TEA switch to "COFFEE".
c. COFFEE MODE will brew 64 oz. of coffee.
d. Use a standard 64 oz. decanter.
2. TEA
a. When brewing tea, be sure to use the "tea" brew chamber
(uses the short rack, and states "tea only" on the outside of the
shell).
b. Press the COFFEE/TEA switch to "TEA".
c. Select either "1 gallon" or "3 gallon brew".
d. Use a dispenser of the appropriate size. Be sure dispenser is
M628 76201 Owners Manual 8781A Tea Brewer
positioned so that water from the BYPASS NOZZLE flows into
the dispenser.
IMPORTANT:
Tank must be full of water
before tank heater switch
"
ON". Heating element
will be damaged if allowed
to operate without being
fully submerged in water.
Damage caused by
operating the brewer
without water in the tank
is NOT COVERED BY
WARRANTY.
NOTE:
After tank is filled, turn the
tank heater switch "on".
Brewer will require
approximately 18 minutes
to heat water to operating
temperature.
7
OPERATION (continued)
Fig. 4 Heat Control Diagram
Fig. 5 Water Flow Diagram
WATER HEATER
Water temperature is sensed by a thermobulb
inserted into the water tank. This temperature signal
is fed to the mechanical thermostat.
The setpoint temperature is adjustable. Heating
element is energized by the thermostat.
Excessive temperature will trip the hi-limit safety
switch. The hi-limit will automatically reset when the
brewer cools.
WATER FLOW
AUTOMATIC OPERATION
In COFFEE mode, pressing the BREW switch caus-
es the timer to energize the coffee brew solenoid valve. This allows water from an external water
supply to flow into the water tank.
In TEA mode, pressing the BREW switch causes
the timer to energize the tea brew solenoid valve.
This allows water from an external water supply to
flow into the water tank. Additionally, the tea bypass
solenoid is energized, sending cold dilution water
from an external source to the dispenser.
Water flowing into the tank forces a like amount of
heated water out of the tank to perform the brew.
POUR-OVER OPTION
If an external water source is unavailable, one
decanter of cold water may be poured into the pour
-over opening to brew coffee. Pour-over is not recommended for brewing tea.
AUTOMATIC OPERATION TIMER
The length of time a brew or bypass solenoid is open
is controlled by the timer. The timer signal is routed
to either the coffee brew solenoid, or to the tea brew
and bypass solenoids, according to the position of
the mode switch.
HOT WATER FAUCET
The faucet water coil is submerged in the hot water
tank and draws heat from the brew water. Water
going to the water coil is not controlled by either
brew solenoid valve.
Hot water is provided at the faucet, at supply water
pressure, any time the faucet shut-off valve is OPEN.
M628 76201 Owners Manual 8781A Tea Brewer
8
BREWING COFFEE
A. PREPARATION
Examine the coffee brew chamber
to verify that the tall the wire rack
is in place.
Place one (1) genuine Bloomfield
paper filter into the wire rack in the
coffee brew chamber.
Add a pre-measured amount of
fresh coffee grounds.
Gently shake the brew chamber to
level the bed of grounds.
Slide the brew chamber into place
under the brew head.
B. AUTOMATIC OPERATION
BE sure “READY TO BREW” light is lit.
Fig. 6 Coffee Brew Chamber
Place the appropriate EMPTY decanter in place under the brew
chamber.
Press the "COFFEE/TEA" switch to "COFFEE".
Press the “BREW” switch. The coffee brew solenoid will open for
an amount of time determined by the timer setting, admitting a
measured quantity of water into the tank.
Inlet water will displace a like amount of heated water from the tank.
The hot water will be forced into the brew head where it will spray
over the bed of grounds. Freshly brewed coffee will begin to fill the
decanter under the brew chamber.
When the flow and all dripping stops at the end of the brew cycle,
the coffee is ready to serve.
Discard the contents of the brew chamber and rinse it in a sink.
When the ”READY TO BREW” light glows, the brewer is ready for
another brew cycle.
M628 76201 Owners Manual 8781A Tea Brewer
CAUTION:
BURN HAZARD
Exposed surfaces of the
brewer, brew chamber and
decanter may be HOT to
the touch, and can cause
serious burns.
CAUTION:
BURN HAZARD
To avoid splashing or
overflowing hot liquids,
ALWAYS place an empty
airpot under the brew
chamber before starting
the brew cycle. Failure to
comply can cause serious
burns.
CAUTION:
BURN HAZARD
After a brew cycle, brew
chamber contents are
HOT. Remove the brew
chamber and dispose of
used grounds with care.
Failure to comply can
cause serious burns.
NOTE: Water for the hot
water faucet is heated in a
coil inside of the water
tank. Use of the faucet will
not affect the volume of
water delivered for a brew.
However, overuse of the
faucet during a brew may
lower the temperature of
the brew water.
9
BREWING TEA
CAUTION:
BURN HAZARD
Exposed surfaces of the
brewer, brew chamber and
decanter may be HOT to
the touch, and can cause
serious burns.
CAUTION:
BURN HAZARD
To avoid splashing or
overflowing hot liquids,
ALWAYS place an empty
dispenser under the brew
chamber before starting
the brew cycle. Failure to
comply can cause serious
burns.
CAUTION:
BURN HAZARD
After a brew cycle, brew
chamber contents are
HOT. Remove the brew
chamber and dispose of
used grounds with care.
Failure to comply can
cause serious burns.
NOTE: Water for the hot
water faucet is heated in a
coil inside of the water
tank. Use of the faucet will
not affect the volume of
water delivered for a brew.
However, overuse of the
faucet during a brew may
lower the temperature of
the brew water.
A. PREPARATION
Examine the tea brew chamber
to verify that the short the wire rack
is in place.
Place one (1) genuine Bloomfield
paper filter into the wire rack in the
tea brew chamber.
Add an amount of fresh tea leaves
to the brew chamber appropriate to
the desired 1 gallon or 3 gallon
brew volume.
Gently shake the brew chamber to
level the bed of tea leaves.
Fig. 7 Tea Brew Chamber
Slide the brew chamber into place
under the brew head.
B. AUTOMATIC OPERATION
BE sure “READY TO BREW” light is lit.
Place the appropriate EMPTY dispenser in place under the brew
chamber. If a brew-thru lid is used, be sure the bypass opening in
the lid is directly under the bypass nozzle.
Press the "COFFEE/TEA" switch to "TEA".
Press the "TEA VOLUME SELECTOR" switch to either "1 GAL" or
"3GAL" position as desired
Press the “BREW” switch. The coffee brew solenoid will open for
an amount of time determined by the timer setting, admitting a
measured quantity of water into the tank.
Inlet water will displace a like amount of heated water from the tank.
The hot water will be forced into the brew head where it will spray
over the bed of grounds. Freshly brewed coffee will begin to fill the
dispenser. Additionally, a measured amount of cold dilution water
will flow from the bypass nozzle into the dispenser.
When the flow and all dripping stops at the end of the brew cycle,
the tea is ready to serve.
Discard the contents of the brew chamber and rinse it in a sink.
When the ”READY TO BREW” light glows, the brewer is ready for
another brew cycle.
M628 76201 Owners Manual 8781A Tea Brewer
10
CLEANING INSTRUCTIONS
PROCEDURE: Clean Coffee/Tea Brewer
PRECAUTIONS: Disconnect brewer from electric power.
Allow brewer to cool.
FREQUENCY: Daily
TOOLS: Mild Detergent, Clean Soft Cloth or Sponge
Bristle Brush, Bottle Brush
1. Disconnect brewer from electric power.
Allow brewer to cool before cleaning.
2. Remove decanter or dispenser.
3. Remove and empty brew chamber.
4. Remove the spray disk from the brew head (See figure 8):
Press up on the spray disk ears, then turn the disk to the left
to unlatch. Remove the gasket from inside the brew head.
5. Wipe inside of brew head and area around the brew head
with a soft clean cloth or sponge moistened with clean water.
6. Wash the spray disk in a sink using warm water and a mild
detergent. A bristle brush may be used to clear clogged
spray holes. Rinse the spray disk with clean water and allow
to air dry.
7. Wash the brew chamber in a sink using warm water and a
mild detergent. A bristle brush may be used to clean the
inside. Rinse with clean water and allow to air dry.
8. Wipe the exterior of the brewer with a soft clean cloth or
sponge moistened with clean water.
10. Reinstall the gasket INSIDE the brew head, then reinstall the
spray disk.
11. Be sure the wire rack is in place in the brew chamber, then
reinstall the brew chamber.
12. Clean decanters and dispensers by filling with warm soapy
water. Scrub the inside of decanters with a bottle brush.
Empty and rinse with clean water. Wipe the exterior with a
soft clean cloth or sponge moistened with clean wate r. Invert
and allow to air dry.
Procedure is complete
M628 76201 Owners Manual 8781A Tea Brewer
CAUTION:
BURN HAZARD
Brewing and serving
temperatures of coffee are
extremely hot.
Hot coffee will cause
serious skin burns.
CAUTION:
SHOCK HAZARD
Do not submerge or immerse
brewer in water.
IMPORTANT:
DO NOT use steel wool, sharp
objects, or caustic, abrasive or
chlorinated cleansers to clean
the brewer, decanters or
dispensers.
Fig. 8 Cleaning
11
TROUBLESHOOTING SUGGESTIONS
SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDY
Water won't heat Brewer unplugged or circuit
breaker tripped
Temperature setpoint too low Set for desired temperature
Hi-Limit safety switch tripped Allow to cool hi-limit will self-
Check power supply cord
Check / reset circuit breaker
reset
Damaged internal component or
wiring
Examine wiring & connectors,
thermostat and heating element
Repair/replace as needed
Coffee level too high or low Timer out of adjustment Adjust timer
Coffee level (only) too low Plugged coffee solenoid strainer Clean strainer
Tea level too high or low Proper volume not selected S e t tea volume selector switch
to desired volume
Tea level (only) too low Plugged tea solenoid strainer Clean strainer
"TEA" not selected Press COFFEE/TEA switch to
"TEA"
Brew chamber overflows Too many filter papers or wrong
filter paper
Brew chamber dispense hole
plugged
Use one (1) genuine Bloomfield
filter per brew
Thoroughly clean brew
chamber
Sprays water from brew head Spray gasket improperly
No brew (faucet flows OK) Damaged internal component or
Wire rack not in place Install proper wire rack
Too much coffee or too fine a
grind
Use correct grind and amount
of coffee
Check/reinstall gasket on
installed
INSIDE of brew head
Spray disk plugged Clean spray disk
Check brew switch, wiring
wiring
& solenoid. Repair, replace as
needed
No dilution flow from bypass
nozzle
"TEA" not selected Press COFFEE/TEA switch to
"TEA"
Damaged internal component or
wiring
Check wiring & tea bypass
solenoid. Repair, replace as
needed
No brew plus no flow from hot
Water supply OFF Turn water supply ON
water faucet
Water filter (if used) plugged Replace filter element
No flow from hot water faucet Faucet valve turned OFF Turn faucet valve ON
Faucet plugged Disassemble faucet, clean
M628 76201 Owners Manual 8781A Tea Brewer
12
TROUBLESHOOTING SUGGESTIONS
SYMPTOM SUGGESTED REMEDY
Poor coffee quality Keep brewer, brew chamber and decanters clean.
Install a taste and odor filter in water supply, and replace cartridges
regularly.
Use a quality coffee with a consistent roast. Use proper grind
and amount of coffee per brew. Freshly ground coffee beans
make the best coffee beverage.
Be sure to use the coffee brew chamber with the tall wire rack.
Poor tea quality Keep brewer, brew chamber and dispenser clean.
Install a taste and odor filter in water supply, and replace cartridges
regularly.
Use a quality tea. Use proper amount of tea leaves per brew for
the selected brew volume.
Be sure to use the tea brew chamber with the short wire rack.
M628 76201 Owners Manual 8781A Tea Brewer
13
SERVICING INSTRUCTIONS
CAUTION:
SHOCK HAZARD
Opening access panels on this
brew may expose uninsulated
electrical components.
Disconnect brewer from
electrical power before
removing any panel.
ACCESS PANELS
TOP PANEL:
Remove top panel to access hot water tank, thermostat, heating
element, brew circuit tubing, faucet valve and piping, and switches.
Top panel is held by two screws at the rear and a retaining lip at
the front.
FRONT PANEL:
Remove front panel to access timer, wiring and bypass nozzle
plumbing connections.
Front panel is held by two screws at the bottom and a retaining lip
at the top.
SOLENOID DOOR:
Remove solenoid door to access solenoid plumbing and electrical
connections.
Solenoid door is held by two screws and a retaining lip.
Fig. 9 Access Panels
M628 76201 Owners Manual 8781A Tea Brewer
14
SERVICING INSTRUCTIONS
TEMPERATURE ADJUSTMENT
Unplug power cord or turn circuit breaker OFF. Remove top panel.
Pull vent tube out of tank lid and insert a thermometer of known
accuracy in hole. Reconnect brewer to electrical power.
Place empty container under brew chamber. Energize brewer
and allow unit to heat. When the READY TO BREW light first
glows, read the temperature displayed on thermometer.
Adjust thermostat by turning shaft; clockwise increases
temperature. 1/8 turn = approximately 10ºF, or 5.6ºC.
Refer to Table 1 below for proper brewing temperature based on
altitude.
Fig. 10 Checking and Adjusting Brew Temperature
Upon completion, remove thermometer and reinstall the vent line
and top panel.
BOILING
6,500
POINT OF
WATER
IDEAL
BREWING
TEMPERATURE
MAXIMUM
TEMPERATURE
SETTING
TEMP. (ºF)
210
205
200
195
190
0
500
00
500
,0
1,
1
2,000
2,5
00
00
000
,
3
3,5
000
,500
5,000
4
4,
00
00
,0
,5
6
5
ELEVATION (feet above seal level)
50
.9
1
BOILING
POINT OF
WATER
IDEAL
BREWING
TEMPERATURE
RANGE
MAXIMUM
TEMPERATURE
SETTING
100
97
94
91
TEMP. (ºC)
M628 76201 Owners Manual 8781A Tea Brewer
88
0
150
00
3
450
600
50
7
900
1.0
0
5
.350
.200
1
1
1
.500
50
800
6
.
1
1.
ELEVATION (meters above seal level)
CAUTION:
SHOCK HAZARD
These procedures involve
exposed electrical circuits.
These procedures are to be
performed by qualified
technical personnel only.
NOTE: Optimum brewing
temperature is 195ºF to 205ºF
(90ºC to 96ºC).
Thermostat should be adjusted
to a maximum temperature of
200ºF (95ºC).
IMPORTANT:
A mechanical thermostatwill
maintain temperature within
±5ºF.
To prevent boiling water in the
brewer, controller should be
adjusted to a maximum
temperature equal to the local
boiling temperature minus 5ºF,
or 200ºF (94ºC), whichever is
less.
NOTE: 1/8 turn = approximately
10ºF (5.6ºC).
Fig. 11 Adjust Thermostat
Table 1 Boiling Temperature by Altitude
15
SERVICING INSTRUCTIONS (continued)
IMPORTANT: Water pressure
must be between 20 p.s.i and
90 p.s.i. flowing pressure.
If water pressure exceeds this
value, or if water pressure
varies greatly, a pressure regulator must be installed in the
water supply line.
Fig. 12 Adjust Solenoid Time
IMPORTANT: Before setting
assembly into tank, make sure
tank lid gasket is properly seated on flange of lid.
IMPORTANT:
If mounting thermostat
p/n 8512-51, be sure to place
a new seal washer below the
fitting on the capillary line.
If replacing gray-bodied thermo
with p/n 8512-51, be sure to
remove tube from thermowell.
IMPORTANT: When replacing
heating element, also replace
seal gaskets.
SOLENOID TIME ADJUSTMENT
The amount of water dispensed automatically during a brew cycle
is controlled by the timer. This adjustment must be performed in
the COFFEE mode.
Place empty decanter under brew chamber. Press BREW
switch. Brewer should dispense one full decanter of water. To
adjust amount:
Remove brew chamber and button plug. Adjust timer; clockwise
increases time. Run several cycles to check amount of water
delivered. Replace button plug.
REMOVE TANK LID ASSEMBLY
Unplug brewer or turn circuit breaker OFF. Turn OFF water
supply. Remove top panel.
Disconnect brew fill and outlet tubes from tank lid fittings.
Disconnect faucet supply and outlet tubes from flare fittings on
tank lid.
Disconnect all wiring from thermostat, hi-limit and heating
element.
Loosen center screw on tank hold-down bracket. Remove hold
-down bracket by sliding short slotted end off of locking stud and
lifting it off. Remove cover assembly by lifting it straight up.
Reassemble in reverse order.
REPLACE THERMOSTAT
Unplug brewer or turn circuit breaker OFF. Turn OFF water
supply. Remove top panel.
Disconnect all wiring from thermostat only. Loosen and free
jam nut from pass-thru fitting securing temperature sensing bulb.
Remove two screws holding thermostat to bracket.
Lift out thermostat, sensing bulb and thermostat gasket.
Push sensing bulb into tank lid thermowell until fitting seats.
Tighten capillary lock nut only enough to ensure no water
leakage. Excessive tightening is not necessary.
Reassemble in reverse order.
REPLACE HEATING ELEMENT
Remove tank lid assembly per above.
Remove two hex nuts holding element to cover. Pull element
from mounting holes.
Reassemble in reverse order.
M628 76201 Owners Manual 8781A Tea Brewer
16
SERVICING INSTRUCTIONS (continued)
REPLACE SOLENOID
Symptom: Automatic brewer will not flow water; or,
automatic brewer drips continuously from brew head.
NOTE: Wrench p/n 86660 is designed to allow easy removal of
the hoses from the plastic solenoid valve.
IMPORTANT: Shut-off water and electric supply to brewer
before removing hoses or wiring.
Remove water supply flare fitting:
a. Slide the 5/8" end of the wrench over the flats on the
inlet fitting of the valve.
b. Hold the wrench to prevent the inlet fitting from turning
while installing or removing the inlet water supply flare
nut.
Remove braided hose:
a. Slide the 7/16" end of the wrench between the valve
body and the white ring on the extreme end of the metal
hose fitting.
b. Pressure on the white ring toward the metal ferrule
releases the clinch ring, allowing the hose to be easily
slid off of the solenoid bypass outlet.
c. Install hose on new valve by pressing end of hose onto
bypass outlet until it is fully seated.
Disconnect wiring.
Remove two screws holding solenoid to access door.
Reassemble in reverse order.
CLEAN SOLENOID SCREEN
Symptom: Automatic brewer will not flow water.
Unplug power cord or turn circuit breaker OFF. Turn OFF and
disconnect water supply from brewer inlet fitting.
Unscrew water inlet fitting from solenoid.
Using needle-nose pliers, withdraw strainer screen from solenoid.
Clean screen under faucet. A stiff bristle brush may be used if
necessary.
Reinsert screen in solenoid. Be careful to maintain correct
orientation. (The OPEN END of the screen goes in FIRST.)
Reassemble in reverse order.
M628 76201 Owners Manual 8781A Tea Brewer
Fig. 13 Remove Faucet
Supply from Solenoid
Fig. 14 Clean Strainer Screen
17
SERVICING INSTRUCTIONS (continued)
IMPORTANT: When replacing
water faucet coil, also replace
seal gaskets.
SEAT CUP
Fig. 15 Faucet Repair
NOTE: Any abrasion or
roughness on the flat end of the
seat cup will require replacing
the seat cup:
Work the seat cup out of the
bonnet and off of the end of the
stem.
Install a new seat cup, making
sure the knob on the stem is
fully inserted into the pocket of
the seat cup, and the skirt of the
seat cup is fully inserted into the
bonnet.
REPLACE TIMER ASSEMBLY
Unplug power cord or turn circuit breaker OFF.
Remove front panel. Remove knob and three screws holding timer
to bracket. Disconnect wiring to timer.
Reassemble in reverse order.
Adjust timer as described on page 16
REPLACE HOT WATER FAUCET COIL
Symptom: Brewer drips continuously from brew head, except
when faucet valve is turned OFF.
Remove tank lid assembly per above.
Remove two hex nuts hot water coil to cover. Pull coil from mount-
ing holes.
Reassemble in reverse order.
REPAIR HOT WATER FAUCET
Remove top panel and turn faucet valve OFF.
Unscrew aerator cap from faucet and remove handle retaining clip.
Do not let faucet body turn.
Pull bonnet assembly from faucet body.
Examine the interior of the faucet body and the surface of the seat
cup. Clean out any debris in the faucet body, using a stiff bristle
brush if necessary.
Examine the aerator. Clean any debris from the screen or flow
straightener, using a stiff bristle brush if necessary.
Reassemble in reverse order.
REPLACE CONTROL PANEL LIGHT or SWITCH
Unplug power cord or turn circuit breaker OFF.
Using Switch Removal Tool (p/n 83209) to remove TEA VOLUME
SELECT, BREW SWITCH or STOP BREW switch. Use a thin
screwdriver to pry light or COFFEE/TEA switch from mounting
hole. Disconnect leads.
Reassemble in reverse order.
M628 76201 Owners Manual 8781A Tea Brewer
18
SERVICING INSTRUCTIONS (continued)
PROCEDURE: Delime the Water Tank
PRECAUTIONS: Disconnect brewer from electric power.
Allow brewer to cool.
FREQUENCY: As required (Brewer slow to heat)
TOOLS: Deliming Solution
Protective Gloves, Goggles & Apron
Mild Detergent, Clean Soft Cloth or Sponge
Bristle Brush, Bottle Brush
Large Sink (or other appropriate work area)
1. Unplug power cord. Turn off the water shut-off valve and
disconnect the water supply line from the brewer inlet fitting.
2. Remove the tank lid assembly as described on page 13.
3. Remove the water tank from the brewer body by lifting
straight up. Empty all water from the tank. Set the tank back
into the brewer.
4. Mix 2 quarts of deliming solution according to the
manufacturer’s directions. Carefully pour the deliming
solution into the water tank. Lower the lid assembly back
onto the tank. Allow to sit for 30 minutes, or as directed by
the manufacturer.
5. At end of soaking period, remove lid assembly from tank.
Thoroughly rinse internal components of lid assembly with
clear water. Using a stiff bristle brush, scrub the heating
element and faucet water coil to remove lime and calcium
build-up. Rinse with clean water. Store lid assembly in a safe
location.
6. Remove the tank from the brewer and empty. Using a stiff
bristle brush, scrub the interior of the water tank to remove
lime and calcium build-up. Rinse with clean water.
7. Set the tank back into the brewer. Reassemble the tank lid to
the water tank. Make sure the gasket is properly in place,
then reinstall lid clamps.
8. Reinstall wiring to heating element and thermostat.
Reassemble piping for the faucet. Verify that all internal
components are dry, then reinstall the top panel.
10. Reconnect brewer to electrical supply and reconnect water
supply.
11. Install the brew chamber without filter paper or grounds.
Run at least three full brew cycles and discard all water
M628 76201 Owners Manual 8781A Tea Brewer
generated.
12. Brewer is ready to use.
CAUTION:
CHEMICAL BURN
HAZARD
Deliming chemicals are caustic.
Wear appropriate protective
gloves and goggles during this
procedure.
Never siphon deliming chemicals or solutions by mouth.
This operation should only be
performed by qualified and experienced service personnel.
IMPORTANT: DO NOT spill,
splash or pour water or deliming
solution into or over any internal
component other than the inside
of the water tank.
IMPORTANT: DO NOT allow
any internal components to
come into contact with the
deliming solution. Take care to
keep all internal components
dry.
NOTE: Repeat steps 4 thru 5
as required to remove all scale
and lime build-up.
NOTE: Normally, silicone hoses do not need to be delimed. Should deliming hoses
become necessary, Bloomfield
recommends replacing the
hoses.
19
8781A EXPLODED VIEWS & PARTS LIST
19
23
22
21
20
17
18
16
15
14
1
2
3
PLUMBING
COMPONENTS
4
5
6
7
8
9
11
10
12
13
HOT WATER TANK
43
42
41
40
39
38
37
36
34
35
34
33
31
INDICATES COMPONENTS OF
8541 WF-300 TANK COVER ASSEMBLY
(120V, 1500W WITH COIL - ALL PARTS
MOUNTED TO COVER)
32
20
25
24
M628 76201 Owners Manual 8781A Tea Brewer
26
27
28
29
30
IL2624, Rev. -
8781A EXPLODED VIEWS & PARTS LIST (continued)
8781A Internal Components
Fig No Part No Description
1 F4-73977 TUBE SIL .312 ID X 35
2 2K-70096 ELBOW POLYPROPELYNE
3 DD-71435 PAN BASIN ASSY 8781.A
DD-71422 NLA TUBE WATER OUTLET
4
5 2K-70130 ELBOW SPRAYER
6 A6-70163 RETAINER HEAD SPRAY
7 2I-70139 GASKET SPRAY HEAD
8 A6-72727 SPREAY HEAD DISC EMBOSSED
9 2V-71425 TUBE OUT FAUCET
10 2C-72680 NUT 7/16-20 FINISH HEX JA
11 2C-70107 WASHER LOCK 7/16 EXT SEMS
12 2C-72681 WASHER FLT 15/32X1 1/8 X0
13 WS-82556 FAUCET ASY PRESSURE N/S
14 F4-70423 SPOUT ASSY WATER
15 DD-71432 TUBE SIL .25ID X 22.0 LG
16 2E-73282 SOLENOID DUAL 120V 60/.19
17 2E-75685 SOLENOID BYPS 120V 75GPM
18 2K-70921 FTG UNION TEE
19 DD-71451 TUBE INLET FORMED
20 DD-75778 HOSE BRADED W/BL VLV, 1/4"
21
22 2V-70352 VALVE NEEDLE SEAT
23 2V-70111 TUBE FORMED INLET ASSY
24 2C-73457 NUT 8-32 HEX HEAD KEPS MS
25 WS-8512-51 THERMO CNTRL, W-WSHR/SCREW
26 2C-70134 STRAP HOLD DOWN ASSY
27 2C-70174 WASHER THERMO SEAL .465 OD
28 2C-70146 NUT 4-40 HEX HD MS SS
29 2C-70145 SCREW 4-40X1-1/2 SL PAN
30 2V-70144 TUBE INLET WATER
31 WS-8541WF-300 TANK COVER ASSY 8781
32 2N-70143UL ELEM HEATING 120V 1500W
33 2N-70149 COIL ASSY HOT WATER
34 2I-70152 GASKET -ELEMENT, HEATING
35 2C-70151 NUT 7/16-20 HEX HEAD BRAS
34 2I-70152 GASKET-ELEM, HEATING
36 2T-47499 THERMO HI-LIMIT 120/240V
37 2I-70147 GASKET TANK COVER
38 A6-70142 COVER TANK S/A A/F
M628 76201 Owners Manual 8781A Tea Brewer
39 2C-70175 NUT 1/2-20 HEX HD BRASS
40 2D-70110 TANK BODY
41 2K-70103 ELBOW OUTLET
42 2K-Z18254 ELBOW INLET
43 2V-70102 TUBE VENT
ADAPTER, 1/4" MALE FLARE X 1/8 FPT
21
8781A EXPLODED VIEWS & PARTS LIST
BLOOMFIELD
COVER, POUR-OVER
TOP PANEL 86699
BASIN, 8781A 8781-61
LIMIT 8043-83
SWITCH, MAIN
POWER 8593-27
BASIN ASSY 8781-65
LABEL, BASIN 71429
INDICATOR, "READY..."
GREEN 8718-31
INDICATOR, MODE
RED 8781-39
DOOR, SOLENOID
ACCESS 76248
SOLENOID, TEA
& BYPASS 73282
SOLENOID, COFFEE
ASSY, BODY 8781-63
FRONT PANEL 8781-8
86666
THERMO, HI-
75685
THERMO,
CONTROL
8512-51
THERMO, CONTROL
(ALTERNATE) 86280
ELEMENT 120V
1500W 8543-14
(REPLACEMENT) 8543-45
GASKET, BREW HEAD
SWITCH TEA VOL
SELECT 8781-19
TIMER, DUAL
8781-11
BUTTON PLUG
2" DIA 8706-75
BREW HEAD
SPRAY DISK 82727
SWITCH, COFFEE/TEA
SELECT 8781-52
SWITCH, STOP
BREW 8812-79
SWITCH, BREW
8707-28
BREW CHAMBER,
COFFEE 9102-41
HANDLE, 8702-2
PK OF 1000 POF
8543-42
WIRE RACK,
COFFEE 8706-9
(COMPLETE)
PAPER FILTER
WIRE RACK,
TEA 8812-77
M628 76201 Owners Manual 8781A Tea Brewer
BASE 8812-68
PANEL, BOTTOM
8812-63
LEG, LEVELER 8033-55
LEVELER, CAP 8033-56
CORDSET, 120V
6407-15
BREW CHAMBER,
TEA 8812-76
(COMPLETE)
HANDLE, 8702-2
STRAIN RELIEF
35-210
CABINET & ELECTRICAL
COMPONENTS
22
8781A EXPLODED VIEWS & PARTS LIST (continued)
M628 76201 Owners Manual 8781A Tea Brewer
21
8781A SERVICE KITS
SERVICE KITS
FAUCET REPAIR KITS
82573 Handle
82575 Seat Cup
82576 Faucet Repair Kit (Includes Handle, Seat Cup,
Spring, Stem, Pin & Bonnet
82682 Retainer Clip
84804 Aerator Replacement Kit (Includes O-Ring,
Aerator Disk & Aerator Cap
84870 Aerator Repair Kit (Includes O-Ring & Aerator
Disk)
SOLENOID REPAIR KITS
73282 Solenoid Complete, Dual (.60 gpm + .19 gpm)
75685 Solenoid, Complete, (.75 gpm with Bypass)
85218 Inlet Fitting Kit (Includes Screen, Washer, Inlet
Fitting & Cap)
85219 Inlet Strainer
TANK LID ASSEMBLY
8541WF-300 Spare Cover Assembly (120V,
1500W, With Hot Water Coil - all
parts mounted to cover)
22
M628 76201 Owners Manual 8781A Tea Brewer
TEA VOL
SELECT SWITCH
1 GAL
C
3 GAL
TEA
BREW SWITCH
LIGHT
88
1
COFFEE
LIGHT
BREW SWITCH
STOP
8781A WIRING DIAGRAM
COFFEE/TEA
SELECT SWITCH
view from front
9
READY
LIGHT
black
brown
blue
orange
7
4
1
5
8
12
2
69
3
11
14
black
black
1
10
black
16
black
13
15
blue
orange
black
white
TANK HEAT SWITCH
1
green
6
white
2
supplied with
timer
white 14ga
COFFEE
BREW
SOLENOID
white
black
HI-LIMIT
blue
black
red
LOAD
white white
white
3
T
34
black
THERMOSTAT
white
10
1/2gal C 1gal
5
L1
TIMER
6
6
TEA BREW
SOLENOID
4
black
HEATING
ELEMENT
120V
1500W
supplied
with
timer
black
yellow
orange
19 13
18
TEA BYPASS
SOLENOID
7
7
orange
black
blueblue
8781A
COFFEE/TEA BREWER
WIRING DIAGRAM
yellow
M628 76201 Owners Manual 8781A Tea Brewer
23
Genuine Parts
Protect - YOU - All - Ways
SERVICE TRAINING - QUALITY SERVICE
CUSTOMER SATISFACTION
Commercial Food Equipment Service Association
Wells Bloomfield proudly supports CFESA
Commercial Food Equipment Service Association
SERVICE TRAINING - QUALITY SERVICE
CUSTOMER SATISFACTION
WELLS BLOOMFIELD, LLC
2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439
telephone: 775-689-5707
fax: 775-689-5976
www.wellsbloomfield.com
PRINTED IN UNITED STATES OF AMERICA
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