614
OWNERS MANUAL
for
AIRPOT BREWER
MODELS
8764
8766
Includes:
Installation
Operation
Use & Care
Servicing Instructions
Model 8740 Brewer
w/optional
7759 Airpot
p/n 76486 Rev. (-) M614 042503 cps
WARRANTY STATEMENT
All electrical equipment manufactured by BLOOMFIELD
INDUSTRIES 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.
BLOOMFIELD INDUSTRIES DIVISION / SPECIALTY
EQUIPMENT MANUFACTURING CORPORATION SHALL
NOT BE LIABLE FOR INDIRECT, INCIDENTAL OR
CONSEQUENTIAL 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.
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.
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 Industries 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: (775) 689-5700 Fax: (888) 492-2783
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
Bloomfield Industries
P.O. Box 280
Verdi, NV 89439
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.
Bloomfield Industries 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 8
CLEANING INSTRUCTIONS 9
TROUBLESHOOTING SUGGESTIONS 10
SERVICING INSTRUCTIONS 11
Deliming Instructions 15
EXPLODED VIEW & PARTS LIST
Model 8764 16
Model 8766 18
WIRING DIAGRAMS 21
INTRODUCTION
Thank You for purchasing this Bloomfield Industries 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.
SPECIFICATIONS
MODEL DIMENSIONS VOLTS WATTS AMPS
1ø
8764 120 1800 15.0 NEMA 5-15P
8764CA k
8766
24-1/8" high
8-9/16" wide
16-5/8" deep (body)
20-1/2" deep (overall
incl. faucet and inlet
connection)
120 1500 12.5 NEMA 5-15P
120 /
208-240
3500 14.5 not provided
POWER SUPPLY
CORD
k Meets Canadian requirements
APPLICABILITY
This manual applies to the following Bloomfield Industries product:
8764 8764CA
8766
1
FEATURES AND OPERATING CONTROLS
Fig. 1 Model 8764 Features and Operating Controls
2
PRECAUTIONS AND GENERAL INFORMATION
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 warn-
ing can result in electrical shock.
WARNING: Injury Hazard
All installation procedures must be performed by qualified personnel with full knowledge of all applica-
ble 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.
This appliance is intended for commercial use only.
This appliance is intended for use to brew beverage products for
This appliance is intended for use to brew beverage products for
human consumption. No other use is recommended or
human consumption. No other use is recommended or
authorized by the manufacturer or its agents.
authorized by the manufacturer or its agents.
This appliance is intended for use in commercial establishments,
This appliance is intended for use in commercial establishments,
where all operators are familiar with the appliance use,
where all operators are familiar with the appliance use,
limitations and associated hazards. Operating instructions and
limitations and associated hazards. Operating instructions and
warnings must be read and understood by all operators and
warnings must be read and understood by all operators and
users.
users.
Except as noted, this piece of equipment is made in the USA
Except as noted, this piece of equipment is made in the USA
and has American sizes on hardware. All metric conversions
and has American sizes on hardware. All metric conversions
are approximate and can vary in size.
are approximate and can vary in size.
The following trouble shooting, component views and parts lists
The following trouble shooting, component views and parts lists
are included for general reference, and are intended for use by
are included for general reference, and are intended for use by
qualified service personnel.
qualified service personnel.
This manual should be considered a permanent part of this
This manual should be considered a permanent part of this
appliance. The manual must remain with the appliance if it is
appliance. The manual must remain with the appliance if it is
sold or moved to another location.
sold or moved to another location.
This brewer is and listed under UL file E9253.
This brewer is listed under UL file E9253.
This brewer meets
This brewer meets
operated and maintained in accordance with the enclosed
operated and maintained in accordance with the enclosed
instructions.
instructions.
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.
AGENCY LISTING INFORMATION
AGENCY LISTING INFORMATION
Standard 4 only when installed,
Standard 4 only when installed,
CAUTION: Equipment Electrical
Damage
DO NOT plug in or energize this
DO NOT plug in or energize this
appliance until all Installation
appliance until all Installation
Instructions are read and followed.
Instructions are read and followed.
Damage to the Brewer will occur if
Damage to the Brewer will occur if
these instructions are not followed.
these instructions are not followed.
CAUTION:
Burn Hazard
Exposed surfaces of the
Exposed surfaces of the
appliance, brew chamber and
appliance, brew chamber and
dispenser may be HOT to the
dispenser may be HOT to the
touch, and can cause serious
touch, and can cause serious
burns.
burns.
CAUTION: Equipment
Electrical Damage
CAUTION:
Burn Hazard
E9253
E9253
3
3
STD 4
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 EQUIP-
It is very important for safety
and for proper operation that the
brewer is level and stable when
standing in its final operating
position.
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.
NOTE: This equipment must be
installed to comply with
applicable federal, state and
local plumbing codes and
ordinances.
MENT 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.
PLUMBER’S INSTALLATION INSTRUCTIONS
Brewer must 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.
NSF requires that the brewer be able to be moved for cleaning
underneath. A flex line or 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.
4
INSTALLATION (continued)
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
automatic brewers are connected to the water supply.
Model 8764 and 8764CA are equipped with a cord and plug.
They requires a 115 - 125 volt 20 amp circuit (50/60 Hz, 2 wire
plus ground, with NEMA 5-15R receptacle). See Fig. 3 at right.
Model 8766 must be wired by an licensed electrician, and
requires a 115/230V 20A circuit (50/60 Hz, L1, L2, Neutral, plus
ground). Remove access panel and solenoid door to gain access
to terminal block and ground connection.
Green ground connection must be connected to a suitable
building ground. Circuit must be capable of 3800 Watts. See
Fig. 4 below.
Fig. 4 Electrical Installation - Model 8766
PREPARATION
The water tank must be filler prior to operation. Slide an empty
brew chamber in place under the brew head. Place an empty
container under the brew chamber.
Be sure the unit is connected to the water supply, the water
supply is turned ON and the "TANK HEATER SWITCH" is OFF.
Connect the unit to electric power.
Press the "START BREW" switch to initiate a brew cycle. The
solenoid will open and begin filling the tank. Initiate consecutive
brew cycles until water begins to flow from the brew head.
When all water stops dripping, discard all water generated.
Press the "TANK HEATER SWITCH" to ON. The heating
elements will begin heating the water in the tank. When the
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.
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.
Fig. 3 Model 8764
120 Volt Plug Configuration
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.
IMPORTANT: Do not connect
brewer to electrical power until
you are ready to fill the tank.
See instructions at left.
5
OPERATION
Fig. 5 Brewer Operation Diagram
IMPORTANT:
Tank must be full of water
before pressing TANK
HEATER SWITCH "
ON".
Heating elements 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.
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 brew chamber (empty) and place an empty dispenser in
place under the brew chamber.
2. Be sure the TANK HEATER SWITCH is "
3. Press The BREW switch. Water will start filling the tank. Run
several consecutive brew cycles until water flows from the brew
chamber.
5. When water stops dripping from the brew chamber, empty the
OFF". Plug the unit into an
appropriate receptacle. Press MAIN POWER SWITCH (8766)
dispenser, then press TANK HEAT switch "
ON". The heating
"ON".
element will begin heating water in the tank. When the water has
reached the proper brewing temperature, the “READY TO BREW”
light will glow.
6
WATER HEATER
Water temperature is sensed by a thermobulb
inserted into the water tank. This temperature
signal is fed to the mechanical thermostat.
The temperature setpoint 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
Pressing BREW button energizes the solenoid
valve, allowing water from an external water
supply to flow into the basin pan and then into
the hot water tank. This forces an identical
amount of hot water out of the tank and through
the spray head into the brew chamber
The solenoid uses a flow control device so that
flow is consistent between 20 p.s.i. and 90 p.s.i.
Length of time the solenoid is open is controlled
by the timer.
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
the solenoid valve.
The faucet is at supply water pressure any time
the faucet shut-off valve is OPEN.
OPERATION (continued)
Fig. 6 Heat Control Diagram
Fig. 7 Water Flow Diagrams
7
BREWING COFFEE
CAUTION:
Burn Hazard
Exposed surfaces of the
brewer, brew chamber and
dispenser 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.
A. PREPARATION
Be sure wire rack is properly
installed in brew chamber.
Place one (1) genuine Bloomfield
paper filter into the brew chamber.
Add an amount of fresh ground
coffee to the brew chamber
appropriate to the brew volume.
Gently shake the brew chamber
to level the coffee grounds.
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 “BREW” switch. The 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.
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.
Fig. 8 Preparing the Brew
Chamber
8
CLEANING INSTRUCTIONS
PROCEDURE: Clean 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 airpot.
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. Be sure wire rack is properly installed.
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. Clean airpots by filling with warm soapy water. 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.
Procedure is complete
CAUTION:
Burn Hazard
Brewing and serving
temperatures of tea are
extremely hot.
Hot tea will cause serious skin
burns.
CAUTION:
Electric Shock
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 or dispensers.
Fig. 9 Cleaning
Hazard
9
TROUBLESHOOTING SUGGESTIONS
SYMPTOM POSSIBLE CAUSE SUGGESTED REMEDY
Water won’t heat Brewer unplugged or circuit
breaker tripped
Tank heater switch OFF Press switch to ON
Temperature setpoint too low Set for desired temperature
Hi-Limit safety switch tripped Allow to cool, reset hi-limit
Damaged internal component or
wiring
Coffee delivered volume too
high or low
Brew chamber overflows Brew chamber dispense hole
Sprays water from brew head Spray gasket improperly
Timer out of adjustment Adjust timer
Too many filter papers or wrong
filter paper
plugged
Too much coffee grounds Use correct amount of grounds
Wire rack missing Properly install wire rack
installed
Spray disk plugged Clean spray disk
Check power supply cord
Check / reset circuit breaker
Examine wiring & connectors,
controller, power board and
heating element
Repair/replace as needed
Use one (1) genuine Bloomfield
filter per brew
Thoroughly clean brew
chamber
Check/reinstall gasket on
INSIDE of brew head
Damaged internal component or
wiring
No brew Water supply OFF Turn water supply ON
Solenoid inlet strainer plugged Clean strainer
Water filter (if used) plugged Replace filter element
No flow from faucet Faucet shut-off closed Turn faucet shut-off ON
Faucet leaks
Poor coffee quality Keep brewer and airpots clean.
Dirty or damaged seat cup Clean faucet, repair if required.
Backflow preventer installed
without water hammer, or water
hammer installed too close to
brewer
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.
Check switches, timer and
solenoid.
Repair, replace as needed
Properly install water hammer
10
SERVICING INSTRUCTIONS
ACCESS PLUGS
Use a small flat-blade screwdriver or similar implement to pry the
hole plug from the access hole in the top wrap.
HOT WATER TEMPERATURE:
Remove right 7/8" hole plug to access temperature control.
WATER DELIVERED VOLUME:
Remove left 2" hole plug to access water volume timer.
HI-LIMIT RESET (8766 only):
Remove front 1/2" hole plug to access hi-limit reset.
ACCESS PANELS
TOP WRAP:
Remove top wrap to access hot water tank, thermostat, timer,
switches and brew circuit tubing.
Top wrap is held by two screws at the front and two screws at
the rear.
TERMINAL BLOCK ACCESS (8766 only):
Remove terminal block access panel to wire power to unit.
Access panel is held by two screws and a retaining lip.
SOLENOID DOOR:
Remove solenoid door to access wiring and brew solenoid.
Solenoid door is held by two screws and a retaining lip.
CAUTION
Electric Shock
Hazard
Opening access panels on this
brew may expose uninsulated
electrical components.
Disconnect brewer from
electrical power before
removing any panel.
NOTE ;
Time and temperature controls
may be accessed without
removing cabinet panels by
removing the appropriate hole
plug from the top wrap.
Fig. 10 Access Panels
11
SERVICING INSTRUCTIONS (continued)
TEMPERATURE ADJUSTMENT
Energize brewer and allow unit to heat. When the READY TO
BREW light first glows, read the temperature.
Thermostat may be adjusted by removing the right button plug.
Carefully check the water temperature at the outlet of the brew
chamber. The temperature at this location is approximately 5º F
less than the actual brew temperature.
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.
Upon completion, remove thermometer and reinstall the vent line
and top wrap.
BOILING
6
,500
POINT OF
WATER
IDEAL
BREWING
TEMPERATURE
MAXIMUM
TEMPERATURE
SETTING
TEMP. (ºF)
210
205
200
195
190
0
00
5
1,0
00
1
,500
00
0
500
2,
2,
3,000
00
500
,
4,0
3
4,500
00
0
,000
,500
6
5
5,
ELEVATION (feet above seal level)
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 thermostat will
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 205ºF (97ºC), whichever is
less.
NOTE: 1/8 turn = approximately
10ºF (5.6ºC).
100
97
94
91
TEMP. (ºC)
88
0
0
00
5
3
1
450
600
75
0
0
90
.050
1.200
1
1.350
1.5
00
ELEVATION (meters above seal level)
Table 1 Boiling Temperature by Altitude
1.6
50
BOILING
POINT OF
WATER
IDEAL
BREWING
TEMPERATURE
RANGE
MAXIMUM
TEMPERATURE
800
1.
SETTING
950
.
1
Fig. 11 Adjust Thermostat
12
SERVICING INSTRUCTIONS (continued)
SOLENOID TIMER ADJUSTMENT
The amount of water dispensed automatically during a brew cycle
is controlled by the SOLENOID TIMER.
Place empty dispenser under brew chamber. Press the BREW
switch. Measure total amount of water delivered. To adjust
amount:
Remove left button plug. Adjust timer; clockwise increases time.
Run several cycles to check amount of water delivered.
Reinstall button plug.
REMOVE TANK LID ASSEMBLY
Unplug brewer or turn circuit breaker OFF. Turn OFF water
supply. Remove top wrap.
Disconnect brew fill and outlet tubes from tank lid fittings.
Disconnect all wiring from thermostat, hi-limit and heating
element.
Loosen the two nuts at the ends of the 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.
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.
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 Timer
IMPORTANT: Before setting
assembly into tank, make sure
tank lid gasket is properly
seated on flange of lid.
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.
Tighten capillary lock nut only
enough to ensure no water
leakage. Excessive tightening
is not necessary.
IMPORTANT: When replacing
heating element, also replace
seal gaskets.
13
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 models,
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
Symptom: Automatic brewer will not flow water.
Fig. 13 Remove Faucet
Supply from Solenoid
Fig. 14 Clean Strainer Screen
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.
ADJUST FAUCET FLOW
Symptom: Faucet flow to high or too low
Access the faucet shut-off valve by opening the solenoid door.
The faucet shut-off valve is a 1/4-turn ball valve. Turn the slotted
end of the valve stem to increase or decrease flow.
Fig. 15 Adjust Faucet Shut-Off
Valve
14
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
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.
15
MODEL 8764 EXPLODED VIEW & PARTS LIST
16
MODEL 8764 EXPLODED VIEW & PARTS LIST (continued)
ITEM PART # DESCRIPTION
1 BODY 8764
2 BASE 8764
3 COVER, BASE
4 TOP FRAME
5 COVER, TOP
6 8043-10 TANK
7 TANK LID
8 8043-12 TANK LID GASKET
9 SPACER, TANK
10 8540-6 HOT WATER COIL
11 85089 SOLENOID DOOR
12 85752 SOLENOID, 120V .15 GPM
13 8812-61 TIMER 120V 8 MIN
14 POWER CORD
15 TUBE, WATER 23"
ITEM PART # DESCRIPTION
31 TUBE, SPRAYHEAD
32 8043-28 NUT, ELEMENT 1/2-20 BR
33 TUBE ASSY, FAUCET
34 86280 THERMOSTAT CONTROL
35 8043-13 ELBOW, SPRAYER
36 OVERLAY DECAL
37 82556 ASSY, FAUCET
38 82214 SWITCH, TANK HEATER
39 8812-40 SWITCH, STOP BREW
40 8707-55 SWITCH, START BREW
41 8718-31 LIGHT, PILOT GREEN 125V
42 82215 GASKET, SPRAYHEAD 1.5"
43 82727 SPRAY DISK
44 PLATE, SPRAY PANEL
45 8861-18 BUMPER, BLACK
16 BRACKET, TIMER
17 76118 STRAIN RELIEF
18 86490 HOSE, BRAIDED ASSY
19 8043-5 STRAP, TANK HOLD-DOWN
20 83034 TUBE, FILL 90º BEND
21 82390 GROMMET, FILL TUBE
22 8941-21 NUTS 7/16-20 BRASS
23 8043-11 ELBOW, OUTLET
24 83745 ELBOW, SWIVEL 7/16-20
25 8552-50 THERMO HI-LIMIT
26 8043-15 VENT TUBE, SHORT
27 82241 FITTING HOSE CONNECTOR
28 8706-20 VENT TUBE LONG
29 8043-30 GASKET, ELEMENT
30
8780-18
8043-14
ELEMENT 120V 1800W
ELEMENT 120V 1500W
46 8861-19 FERRULE, EYELET
47 83100 BREW CHAMBER, SS
48 8705-36 BUTTON PLUG 7/8"
49 8706-75 BUTTON PLUG, 2"
50 81732 LEG, ADJUSTABLE
17
MODEL 8766 EXPLODED VIEW & PARTS LIST
18
MODEL 8766 EXPLODED VIEW & PARTS LIST (continued)
ITEM PART # DESCRIPTION
1 BODY 8766
2 BASE 8764
3 COVER, BASE
4 TOP FRAME
5 COVER, TOP
6 8043-10 TANK
7 TANK LID
8 8043-12 GASKET, TANK LID
9 SPACER, TANK
10 8540-6 HOT WATER COIL
11 85089 SOLENOID DOOR
12 85752 SOLENOID, 120V .15 GPM
13 8812-61 TIMER 120V 8 MIN
14 82936 SWITCH, ROCKER 240V
15 TUBE, WATER 23"
16 BRACKET, TIMER
17 66385 STRAIN RELIEF
18 86490 HOSE, BRAIDED ASSY
19 8043-5 STRAP, TANK HOLD-DOWN
20 83034 TUBE, FILL 90º BEND
21 82390 GROMMET, FILL TUBE
22 8941-21 NUTS 7/16-20 BRASS
23 8043-11 ELBOW, OUTLET
24 83745 ELBOW, SWIVEL 7/16-20
25 8552-50 THERMO HI-LIMIT
26 8043-15 VENT TUBE, SHORT
ITEM PART # DESCRIPTION
31 TUBE, SPRAYHEAD
32 8043-28 NUT, ELEMENT 1/2-20 BR
33 TUBE ASSY, FAUCET
34 86280 THERMOSTAT CONTROL
35 8043-13 ELBOW, SPRAYER
36 OVERLAY DECAL
37 82556 ASSY, FAUCET
38 82214 SWITCH, TANK HEATER
39 8812-40 SWITCH, STOP BREW
40 8707-55 SWITCH, START BREW
41 8718-31 LIGHT, PILOT GREEN 125V
42 82215 GASKET, SPRAYHEAD 1.5"
43 82727 SPRAY DISK
44 PLATE, SPRAY PANEL
45 8861-18 BUMPER, BLACK
46 8861-19 FERRULE, EYELET
47 83100 BREW CHAMBER, SS
48 8705-36 BUTTON PLUG 7/8"
49 8706-75 BUTTON PLUG, 2"
50 81732 LEG, ADJUSTABLE
51 PANEL, TERM BLK ACCESS
52 80709 TERMINAL BLOCK 4P
53 BRACKET, TERM BLOCK
54 BRACKET, HI-LIMIT
55 80272 BUTTON PLUG 1/2"
27 82241 FITTING HOSE CONNECTOR
28 8706-20 VENT TUBE LONG
29 8043-30 GASKET, ELEMENT
30 8716-1 ELEMENT 230V 3500W
19
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)
86398 Bonnet (only)
86399 Stem (only)
SOLENOID REPAIR KITS
85752 Solenoid, Complete, with bypass
85218 Inlet Fitting Kit (includes cap, inlet fitting,
washer and screen)
85219 Inlet Strainer
20
WIRING DIAGRAMS
21
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
website: www.wellsbloomfield.com
Loading...