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
PRINTED IN UNITED STATES OF AMERICA
p/n 76201 Rev. F ECN-12898
M628 050705 cps
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TABLE OF CONTENTS
WARRANTY STATEMENT
SPECIFICATIONS
FEATURES & OPERATING CONTROLS
Thank You for purchasing this
Bloomfield Industries appliance.
xi
1
2
Proper installation, professional
operation and consistent
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION
INSTALLATION INSTRUCTIONS
OPERATION
3
4
6
maintenance of this appliance will
ensure that it gives you the very
best performance and a long,
economical service life.
BREWING COFFEE
9
BREWING TEA
10
11
12
14
19
20
22
23
This manual contains the
CLEANING INSTRUCTIONS
TROUBLESHOOTING SUGGESTIONS
SERVICING INSTRUCTIONS
Deliming Instructions
EXPLODED VIEW & PARTS LIST
SERVICE KITS
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.
WIRING DIAGRAMS
SPECIFICATIONS
VOLTS
1ø
AMPS
1ø
POWER SUPPLY
CORD
MODEL
WATTS
1500 W
8781A
120 VAC
12.5 A
6' with NEMA 5-15P
APPLICABILITY
This manual applies to the following Bloomfield Industries products:
8781A
1
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FEATURES AND OPERATING CONTROLS
2
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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 serious 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.
CAUTION: Equipment
Electrical Damage
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.
DO NOT plug in or energize this
appliance until all Installation
This appliance is intended for use in commercial establishments, Instructions are read and followed.
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.
Damage to the Brewer will occur if
these instructions are not followed.
CAUTION:
Burn Hazard
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.
Exposed surfaces of the
appliance, brew chamber and
decanter or dispenser may be
HOT to the touch, and can cause
serious burns.
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.
AGENCY LISTING INFORMATION
This brewer is
listed under UL file E9253.
E9253
STD 4
This brewer meets
operated and maintained in accordance with the enclosed
instructions.
Standard 4 only when installed,
3
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INSTALLATION
READ THIS CAREFULLY BEFORE STARTING THE INSTALLATION
IMPORTANT:
Unpack the unit. Inspect all components for completeness and
condition. Ensure that all packing materials have been removed
from the unit.
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:
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.
CAUTION: Equipment
Electrical Damage
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.
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.
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
CAUTION: Unstable
Equipment Hazard
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.
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.
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.
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.
4
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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.
NOTE: This equipment must be
installed to comply with all
applicable federal, state and
local plumbing codes and
ordinances.
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 serious injury.
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.
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.
ELECTRICIAN’S INSTALLATION INSTRUCTIONS
IMPORTANT: Do not connect
brewer to electrical power until
you are ready to fill the tank.
See instructions at left.
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.
GROUND
PIN
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).
NEMA 5-15R
RECEPTACLE
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 exist-
ing receptacle. Contact a li-
censed electrician to install the
proper circuit and receptacle.
5
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OPERATION
Fig. 3 Brewer Operation Diagram
6
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OPERATION (continued)
A. START-UP
For initial start-up, or if the brewer has not been used for an
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.
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.
NOTE:
After tank is filled, turn the
tank heater switch "on".
Brewer will require
approximately 18 minutes
to heat water to operating
temperature.
2. Be sure the TANK HEATER SWITCH on back of brewer "OFF".
3. Plug the unit into an appropriate receptacle.
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
positioned so that water from the BYPASS NOZZLE flows into
the dispenser.
7
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OPERATION (continued)
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
Fig. 4 Heat Control Diagram
AUTOMATIC OPERATION
In COFFEE mode, pressing the BREW switch
causes 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.
Fig. 5 Water Flow Diagram
8
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BREWING COFFEE
A. PREPARATION
CAUTION:
Burn Hazard
Examine the coffee brew chamber
to verify that the tall the wire rack
is in place.
Exposed surfaces of the
brewer, brew chamber and
decanter may be HOT to
the touch, and can cause
serious burns.
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.
CAUTION:
Burn Hazard
Gently shake the brew chamber to
level the bed of grounds.
To avoid splashing or
overflowing hot liquids,
ALWAYS place an empty
decanter under the brew
chamber before starting
the brew cycle. Failure to
comply can cause serious
burns.
Slide the brew chamber into place
under the brew head.
Fig. 6 Coffee Brew Chamber
B. AUTOMATIC OPERATION
BE sure “READY TO BREW” light is lit.
Place the appropriate EMPTY decanter in place under the brew
chamber.
Press the "COFFEE/TEA" switch to "COFFEE".
CAUTION:
Burn Hazard
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.
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.
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.
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.
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.
9
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BREWING TEA
CAUTION:
Burn Hazard
A. PREPARATION
Examine the tea brew chamber
to verify that the short the wire rack
is in place.
Exposed surfaces of the
brewer, brew chamber and
dispenser may be HOT to
the touch, and can cause
serious burns.
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.
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.
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.
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.
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.
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.
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.
10
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CLEANING INSTRUCTIONS
CAUTION:
Burn Hazard
PROCEDURE: Clean Coffee/Tea Brewer
PRECAUTIONS: Disconnect brewer from electric power.
Allow brewer to cool.
Brewing and serving
temperatures of coffee are
extremely hot.
Hot coffee will cause
serious skin burns.
FREQUENCY:
TOOLS:
Daily
Mild Detergent, Clean Soft Cloth or Sponge
Bristle Brush, Bottle Brush
CAUTION:
Electric Shock
Hazard
1. Disconnect brewer from electric power.
Allow brewer to cool before cleaning.
Do not submerge or immerse
brewer in water.
2. Remove decanter or dispenser.
3. Remove and empty brew chamber.
IMPORTANT:
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.
DO NOT use steel wool, sharp
objects, or caustic, abrasive or
chlorinated cleansers to clean
the brewer, decanters or
dispensers.
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 water. Invert
and allow to air dry.
Fig. 8 Cleaning
Procedure is complete
11
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TROUBLESHOOTING SUGGESTIONS
SYMPTOM
POSSIBLE CAUSE
SUGGESTED REMEDY
Water won't heat
Brewer unplugged or circuit
breaker tripped
Check power supply cord
Check / reset circuit breaker
Temperature setpoint too low
Hi-Limit safety switch tripped
Set for desired temperature
Allow to cool hi-limit will self-
reset
Damaged internal component or Examine wiring & connectors,
wiring
thermostat and heating element
Repair/replace as needed
Coffee level too high or low
Coffee level (only) too low
Tea level too high or low
Timer out of adjustment
Adjust timer
Plugged coffee solenoid strainer Clean strainer
Proper volume not selected
Set tea volume selector switch
to desired volume
Tea level (only) too low
Brew chamber overflows
Plugged tea solenoid strainer
"TEA" not selected
Clean strainer
Press COFFEE/TEA switch to
"TEA"
Too many filter papers or wrong Use one (1) genuine Bloomfield
filter paper
filter per brew
Brew chamber dispense hole
plugged
Thoroughly clean brew
chamber
Wire rack not in place
Install proper wire rack
Too much coffee or too fine a
grind
Use correct grind and amount
of coffee
Sprays water from brew head
No brew (faucet flows OK)
Spray gasket improperly
installed
Check/reinstall gasket on
INSIDE of brew head
Spray disk plugged
Clean spray disk
Damaged internal component or 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 Check wiring & tea bypass
wiring
solenoid. Repair, replace as
needed
No brew plus no flow from hot
water faucet
Water supply OFF
Turn water supply ON
Water filter (if used) plugged
Faucet valve turned OFF
Faucet plugged
Replace filter element
Turn faucet valve ON
Disassemble faucet, clean
No flow from hot water faucet
12
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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.
13
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SERVICING INSTRUCTIONS
ACCESS PANELS
CAUTION
Electric Shock
Hazard
TOP PANEL:
Remove top panel to access hot water tank, thermostat, heating
element, brew circuit tubing, faucet valve and piping, and
switches.
Opening access panels on this
brew may expose uninsulated
electrical components.
Disconnect brewer from
electrical power before
Top panel is held by two screws at the rear and a retaining lip at
the front.
FRONT PANEL:
removing any 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
14
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SERVICING INSTRUCTIONS
TEMPERATURE ADJUSTMENT
CAUTION
Electric Shock
Hazard
Unplug power cord or turn circuit breaker OFF. Remove top
panel.
These procedures involve
exposed electrical circuits.
These procedures are to be
performed by qualified
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.
technical personnel only.
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.
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.
Upon completion, remove thermometer and reinstall the vent line
and top panel.
Fig. 10 Checking and Adjusting Brew Temperature
BOILING
POINT OF
WATER
210
205
200
IDEAL
BREWING
TEMPERATURE
MAXIMUM
TEMPERATURE
SETTING
195
190
NOTE: 1/8 turn = approximately
10ºF (5.6ºC).
ELEVATION (feet above seal level)
BOILING
POINT OF
WATER
100
97
Fig. 11 Adjust Thermostat
IDEAL
BREWING
TEMPERATURE
RANGE
94
91
88
MAXIMUM
TEMPERATURE
SETTING
ELEVATION (meters above seal level)
Table 1 Boiling Temperature by Altitude
15
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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.
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.
Fig. 12 Adjust Solenoid Time
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.
IMPORTANT: Before setting
assembly into tank, make sure
tank lid gasket is properly
seated on flange of lid.
REPLACE THERMOSTAT
Unplug brewer or turn circuit breaker OFF. Turn OFF water
supply. Remove top panel.
IMPORTANT: When mounting
thermostat, be sure a new seal
washer is placed below the
fitting on the capillary line.
Push sensing bulb thru tank lid
until fitting seats.
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.
Reassemble in reverse order.
Tighten capillary lock nut only
enough to ensure no water
leakage. Excessive tightening
is not necessary.
REPLACE HEATING ELEMENT
Remove tank lid assembly per above.
Remove two hex nuts holding element to cover. Pull element
from mounting holes.
IMPORTANT: When replacing
heating element, also replace
seal gaskets.
Reassemble in reverse order.
16
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SERVICING INSTRUCTIONS (continued)
REPLACE SOLENOID
Symptom: Automatic brewer will not flow water; or,
automatic brewer drips continuously from brew head.
Unplug power cord or turn circuit breaker OFF. Turn OFF and
disconnect water supply from brewer inlet fitting.
Unscrew water inlet fitting from solenoid.
Remove two screws holding access door in place. Remove two
screws holding solenoid to door.
Remove brew water tube from solenoid. On faucet side, remove
faucet water tube from bypass side of solenoid by pressing the
white ring portion of the tube fitting tightly against the metal
portion while pulling the tube off of the solenoid.
Disconnect wiring from solenoid.
Transfer solenoid bracket to new solenoid.
Reassemble in reverse order.
CLEAN SOLENOID SCREEN
Fig. 13 Remove Faucet
Supply from Solenoid
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.
Fig. 14 Clean Strainer Screen
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 13
REPLACE HOT WATER FAUCET COIL
Symptom: Brewer drips continuously from brew head, except
when faucet valve is turned OFF.
IMPORTANT: When replacing
water faucet coil, also replace
seal gaskets.
Remove tank lid assembly per above.
Remove two hex nuts hot water coil to cover. Pull coil from
mounting holes.
Reassemble in reverse order.
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SERVICING INSTRUCTIONS (continued)
NOTE: Any abrasion or
roughness on the flat end of the
seat cup will require replacing
the seat cup:
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.
Work the seat cup out of the
bonnet and off of the end of the
stem.
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.
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.
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.
SEAT CUP
Fig. 15 Faucet Repair
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SERVICING INSTRUCTIONS (continued)
CAUTION -
CHEMICAL BURN
HAZARD
PROCEDURE: Delime the Water Tank
PRECAUTIONS: Disconnect brewer from electric power.
Allow brewer to cool.
Deliming chemicals are caustic.
Wear appropriate protective
gloves and goggles during this
procedure.
Never siphon deliming
chemicals or solutions by
mouth.
FREQUENCY:
TOOLS:
As required (Brewer slow to heat)
Deliming Solution
Protective Gloves, Goggles & Apron
Mild Detergent, Clean Soft Cloth or Sponge
Bristle Brush, Bottle Brush
Large Sink (or other appropriate work area)
This operation should only be
performed by qualified and ex-
perienced service personnel.
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.
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.
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.
IMPORTANT: DO NOT allow
any internal components to
come into contact with the
deliming solution. Take care to
keep all internal components
dry.
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.
NOTE: Repeat steps 4 thru 5
as required to remove all scale
and lime build-up.
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.
NOTE: Normally, silicone
hoses do not need to be
delimed. Should deliming
hoses become necessary,
Bloomfield recommends
replacing the hoses.
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
generated.
12. Brewer is ready to use.
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8781A EXPLODED VIEWS & PARTS LIST
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8781A EXPLODED VIEWS & PARTS LIST (continued)
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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)
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8781A WIRING DIAGRAM
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Bloomfield Industries, Inc.
Division of Carrier Commercial Refrigeration
In US and Canada
Telephone: 775-698-5700
Fax:
Fax:
888-492-2783
800-356-5142 (for orders only)
PRINTED IN UNITED STATES OF AMERICA
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