645
WELLS BLOOMFIELD, LLC
2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439
telephone: 775-689-5707
fax: 775-689-5976
OWNERS MANUAL
for
E. B. C.™
Electronic
Brew
Control ™
DUAL
AIRPOT AND THERMAL
COFFEE BREWERS
MODELS
1090 1091
1092 1093
Includes:
Installation
Use & Care
Servicing Instructions
Model 1092 Brewer
with optional
7759 Airpots
E.B.C.™ brewers are protected under
U. S. Patent # 5, 704,275
Other U. S. and Canadian patents pending.
PRINTED IN UNITED STATES OF AMERICA
p/n 75908 Rev. E ECN-13385
M645 071107 cps
TABLE OF CONTENTS
WARRANTY STATEMENT
SPECIFICATIONS
FEATURES & OPERATING CONTROLS
Thank You for purchasing this
Wells Bloomfield appliance.
xi
1
2
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.
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION
INSTALLATION INSTRUCTIONS
OPERATION
3
4
6
BREWING COFFEE
10
11
12
13
14
20
22
26
CLEANING INSTRUCTIONS
TROUBLESHOOTING SUGGESTIONS
Error Detection
SERVICING INSTRUCTIONS
Deliming Instructions
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.
EXPLODED VIEWS & PARTS LISTS
WIRING DIAGRAMS
SPECIFICATIONS
AMPS
POWER SUPPLY
MODEL
STYLE
VOLTS
WATTS
1ø
1090k
1090R
Thermal
120/240V
115/230V
120/240V
4000W
16.7A
30.4A
16.7A
1091k
1091R
Thermal
Airpot
7000W
4000W
3-Wire (L1, L2, Neut)
plus ground
1092k
1092R
1092SS
Cord NOT SUPPLIED
1093k
1093N
1093R
Airpot
115/230V
7000W
30.4A
k Meets Canadian Standards
APPLICABILITY
This manual applies to the following Wells Bloomfield E. B. C. ® products:
1090
1091
1092
1093
1090R
1091R
1092R
1093NF
1092SS
1093R
1
FEATURES AND OPERATING CONTROLS
Fig. 1 Features & Operating Controls
2
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 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
Airpot or Server 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
and
listed under UL file E9253.
E9253
STD 4
E9253
This brewer meets
Standard 4 only when installed,
operated and maintained in accordance with the enclosed
instructions.
3
INSTALLATION INSTRUCTIONS
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 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.
Plumber must provide two 1/4” female flare water supplies for this
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 25 feet and 3/8" for
more than 25 feet from a 1/2"
water supply line.
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.
4
INSTALLATION INSTRUCTIONS (continued)
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.
NOTE: This equipment must be
installed to comply with
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.
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: Do not connect
brewer to electrical power until
the tank is filled with water.
Pour water into the pour-over
opening until water flows from
the brew head.
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
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.
Brewers must be wired by an electrician, and require a dedicated
115/230V or 120/240V 20A circuit (50/60 Hz, L1, L2, Neutral,
plus ground). Remove front panel to gain access to terminal
block. Green terminal must be connected to a suitable building
ground. Circuit must be capable of 4000 Watts (model 1090 and
1092) or 7000 Watts (model 1091 and 1093).
See figure 3 at right.
IMPORTANT: Wiring must be installed in approved solid or
flexible conduit, and must be secured to the brewer with a strain
relief (to be provided by the installer).
Fig. 3 115/240V Terminal Block
5
OPERATION
Fig. 4 Brewer Operation Diagram
IMPORTANT:
A. START-UP
Tank must be full of water
before connecting brewer
to electrical power.
For initial start-up, or if the brewer has not been used for an
extended period of time:
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.
♦ 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
BEFORE plugging the brewer into a receptacle, or otherwise
connecting brewer to electrical power THE WATER TANKS MUST
BE FILLED. Place an empty decanter under each brew head. Lift
the pour-over cover then pour tap water into each pour-over
opening until water flows from the brew heads. This will require the
equivalent of three full 64oz. Decanters per side. When water stops
dripping from the brew head, empty the container.
Once the tanks are full of water, connect the brewer to electrical
power. For Models 1091 & 1093, press power switch to ON.
The heating elements will begin heating the water in the tank.
When the water has reached the proper temperature, the
“READY TO BREW” LED will glow.
6
OPERATION (continued)
WATER HEATER
Water temperature is sensed by an electronic water
temperature probe inserted into the water tank.
This temperature signal is fed to the controller.
The setpoint temperature is adjustable. The
controller sends a command signal to the power
board based upon a comparison between the
setpoint temperature and actual temperature.
See page 15.
The power board energizes the heating elements
based on the command signal from the controller.
Excessive temperature will trip the hi-limit safety
switch. The hi-limit will automatically reset when
the brewer cools.
Fig. 5 Heat Control Diagram
WATER FLOW
POUR-OVER FEATURE
Pouring any amount of water into the pour-over
opening and into the basin pan forces an identical
amount of heated water out of the tank and through
the spray head.
AUTOMATIC OPERATION
Pressing the BREW key energizes the solenoid
valve, allowing water from an external water supply
to flow into the water tank. The incoming water
forces heated water out of the tank to perform the
brew.
The solenoid uses a flow control device so that
flow is consistent between 20 p.s.i. and 90 p.s.i.
The length of time the solenoid is open is controlled
by the time setting of the controller. See page 18.
After the solenoid closes, water will continue to flow
to the brew chamber until
the water level in the tank falls below the brew
pickup, breaking the siphon.
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.
Hot water is provided at the faucet, at supply water
pressure, any time the faucet shut-off valve is
OPEN.
Fig. 6 Water Flow Diagram
7
OPERATION (continued)
IMPORTANT:
ELECTRONIC FEATURES
Energizing the Brewer
DO NOT energize this
brewer until the water tank
has been filled. Dry firing
will damage heating
elements. See page 6.
When electric power is applied to the unit, all the lights will flash four
times and four beeps will sound. The unit will be OFF.
Press the ON/OFF key. Four beeps will sound and all lights will flash
once. The POWER indicator will remain ON. If the water temperature
is more than 10ºF below the setpoint, the HEAT indicator will glow until
water temperature reaches setpoint.
Press the ON/OFF key again to turn the brewer OFF. Three beeps will
sound, the tank heater and all warmers will be switched off, and all
indicator lights will go out.
Brew Settings
See pages 15 & 16 for setting Brew Time and Temperature.
Fig. 7
Turning Brewer
ON or OFF
ABS™ (Automatic Brew Start)
Start a brew by pressing BREW. A single beep will sound. The system
will verify that the water in the tank is at the proper temperature. If it is,
brew will start immediately. Otherwise, the BREW indicator will flash
(Brew Waiting Mode) until the water reaches setpoint temperature,
then the indicator will glow and brew will commence. If the main
warmer is off, it will be energized automatically.
At the conclusion of the brew cycle, three beeps will sound.
NOTE: To override Brew Waiting Mode, press and hold the BREW
key for 3 seconds while the BREW indicator is flashing. Brew will
begin regardless of water temperature. To avoid under-temperature
brews, this feature should only be used when setting brew volumes.
Fig. 8
Initiate a Brew
NOTE: Brew Waiting Mode (BREW indicator flashing) prevents
multiple, unattended brews. While the BREW indicator is on or
flashing, any additional strokes of the BREW key will be ignored (there
will be a beep each time the key is pressed, however). Another brew
cannot be initiated until the previous brew is complete.
The Brew Waiting Time, also called Dripout Time, (interval between
when the brew is initiated and the audible signal sounds at the end
of the brew) may be adjusted between 2 and 8 minutes at the Brew
Signal Timer dial on the controller. See page 16.
Brew Cancel
To cancel a brew in progress or a brew in waiting, press the CANCEL
key. Two beeps will sound and the BREW indicator will go out.
Fig 9
Brew Cancel
NOTE: If a brew in progress is cancelled, coffee will continue to flow
until all water delivered has dripped through the brew chamber.
8
9
BREWING COFFEE
B. PREPARATION
CAUTION:
BURN HAZARD
Place one (1) genuine Bloomfield
paper filter in the 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.
PAPER
FILTER
Exposed surfaces of the
brewer, brew chamber and
airpot or server may be
HOT to the touch, and can
cause serious burns.
BREW
CHAMBER
Fig. 10 Brew Chamber
CAUTION:
BURN HAZARD
C. POUR-OVER OPERATION
NOTE: Any E..B.C™ brewer can be used in the pour-over mode.
To avoid splashing or over-
flowing hot liquids,
BE sure “HEAT” light is not lit.
Place the appropriate EMPTY airpot or thermal server in place
under the brew chamber.
ALWAYS place an empty
airpot or server under the
brew chamber before
starting the brew cycle.
Failure to comply can
cause serious burns.
Fill an airpot or server, identical to the one being used, with tap
water. Lift the pour-over cover and pour the entire contents of the
container into the pour-over opening, which will fill the basin.
Water from the basin 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 container under the brew chamber. When the
flow and all dripping stops, the coffee is ready to serve.
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.
Discard the contents of the brew chamber. Rinse the brew
chamber in a sink. When the ”HEAT” light goes out, the brewer is
ready for another brew cycle.
C. AUTOMATIC OPERATION
BE sure “HEAT” light is not lit.
Place the appropriate EMPTY airpot or thermal server in place
under the brew chamber.
NOTE: The brewer will not
initiate a second automatic
brew cycle until the current
cycle plus the drip-out time
is completed. The “BREW”
light will flash indicating a
brew in progress.
Press the “BREW” switch. The “BREW” light will glow and a beep
will sound. The solenoid will open for an amount of time
determined by the timer setting, admitting a measured quantity
of water into the basin.
Water from the basin 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 container under the brew chamber. At the end
of the brew cycle, plus an amount of time set to allow all water to
drip out of the brew chamber, two beeps will sound. When the
flow and all dripping stops, 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.
10
CLEANING INSTRUCTIONS
PROCEDURE: Clean Coffee Brewer
CAUTION:
BURN HAZARD
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.
CAUTION:
SHOCK HAZARD
1. Disconnect brewer from electric power.
Allow brewer to cool before cleaning.
Do not submerge or immerse
brewer in water.
2. Remove and empty airpots or thermal servers.
3. Remove and empty brew chambers.
IMPORTANT:
4. Remove spray disks from the brew heads (See figure 8):
Press up on the spray disk ears, then turn the disk to the left
to unlatch. Remove gaskets from inside the brew heads.
DO NOT use steel wool, sharp
objects, or caustic, abrasive or
chlorinated cleansers to clean
the brewer.
5. Wipe inside of brew heads and area around the brew heads
with a soft clean cloth or sponge moistened with clean water.
6. Wash the spray disks in a sink using warm water and a mild
detergent. A bristle brush may be used to clear clogged
spray holes. Rinse the spray disks with clean water and
allow to air dry.
7. Wash the brew chambers 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. For
stainless steel brew chambers, be sure the wire rack is
properly reinstalled.
8. Wipe the exterior of the brewer with a soft clean cloth or
sponge moistened with clean water.
10. Reinstall the gaskets INSIDE the brew heads, then reinstall
the spray disks.
11. Reinstall the brew chambers.
Fig. 11 Cleaning
12. DO NOT submerge airpots or thermal servers in water.
Clean airpots and thermal servers by filling with warm soapy
water. Scrub the inside 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.
Procedure is complete
11
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 adjusted too low
or set to OFF
Turn on and set for desired
temperature. See page 15
Hi-Limit thermostat tripped
Allow to cool. Reset hi-limit
Damaged internal component or Examine wiring & connectors,
wiring
controller, power board and
heating element
Repair/replace as needed
Coffee level too high or low
Brew chamber overflows
Timer out of adjustment
Adjust controller. See page 16
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
Sprays water from brew head
No brew while 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 wiring
Check keypad, controller, power
board & solenoid
Repair, replace as needed
No brew plus no flow from hot
water faucet
Water supply OFF
Turn water supply ON
Clean solenoid screen
Clean strainer
Solenoid screen plugged
Water line strainer (if used)
plugged
No flow from hot water faucet
Water filter (if used) plugged
Faucet valve turned OFF
Faucet plugged
Replace filter element
Turn faucet valve ON
Disassemble faucet, clean
Keep brewer and decanters clean. Install a taste and odor filter in
water supply, and replace cartridges regularly.
Poor coffee quality
Use a quality coffee with a consistent roast. Use proper grind and
amount of coffee per brew.
12
ERROR DETECTION
This brewer is designed to perform a continuous internal
diagnosis, and to signal faults by flashing all the lights. In fault
mode, warmers, heating element and water fill solenoid are turned
“off”, and most keypad functions are disabled.
To reset the brewer after the fault has been corrected, press and
hold the CANCEL key for 3 seconds, or disconnect the brewer from
electrical power for three seconds.
WHAT TO CHECK
DESCRIPTION
CORRECTIVE ACTION
Has the water tank
been properly filled?
On initial startup, an attempt to heat a
dry tank will be detected as too high a
Tank must be properly filled as
detailed on page 6.
temperature or insufficient temp rise, or Check hi-limit (see below)
will trip the high limit.
Has hi-limit safety
thermostat tripped
off?
Brewer may have been started without
water in the tank, or the temp control
thermostat may require adjustment.
Access hi-limit by removing front
panel. Hi-limit is on the left side of
the tank. Use an insulated tool to
push the red button in until it “clicks”
and stays. Reset per above.
Check control board
and temp probe.
Brewer will go into error mode
immediately if either the control board
or temp probe is defective.
Temp probe electrical resistance is
approximately 30KΩ at room temp, and
2KΩ at boiling. Replace temp probe if
less than 1KΩ.
Reset by holding the CANCEL key for
3 seconds. If lights continue to flash:
Disconnect temp probe from control
board.
a. If lights continue to flash, unplug
brewer and replace control board.
b. If lights stop flashing, unplug
brewer and replace temp probe.
Check power board
Brewer will go into error mode 4 minutes Reset by holding the CANCEL key
and heating element. after energizing the heating element if
insufficient heat rise is detected. The
heating element is energized by an
electronic power board, and protected
by the hi-limit safety.
for 3 seconds. If lights resume
flashing after 4 minutes:
Check the voltage across the heating
element terminals:
a. If no voltage is present, unplug
brewer and replace power board.
b. If proper voltage is present,
unplug brewer and replace tank
heating element.
Heating element should receive full line
voltage (i.e. 120V, 208V or 240V).
Be sure the hi-limit safety is reset.
Is the brew
temperature properly error mode if the brew temperature is
adjusted? set too high.
The brewer may occasionally go into
See page 15 for temperature
adjustment procedure.
13
SERVICING INSTRUCTIONS
ACCESS PANELS
CAUTION:
SHOCK HAZARD
TOP PANEL:
Opening access panels or
removing warmer plates on this
brew may expose uninsulated
electrical components.
Disconnect brewer from
electrical power before
removing any panel or warmer
plate.
Remove top panel to access hot water tank, thermo probe,
heating elements, brew circuit tubing, faucet valve and piping.
Top panel is held by two screws at the rear and a retaining lip at
the front.
FRONT PANEL:
Remove front panel to access controller, terminal block and
solenoid.
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 connections.
Solenoid door is held by two screws and a retaining lip.
Fig. 12 Access Panels
14
SERVICING INSTRUCTIONS (continued)
CAUTION:
TEMPERATURE ADJUSTMENT
SHOCK HAZARD
Unplug power cord or turn circuit breaker OFF. Remove top
panel. Remove button plug from front panel.
These procedures involve
exposed electrical circuits.
These procedures are to be
performed by qualified
technical personnel only.
Fig. 13 Checking and Adjusting Brew Temperature
Pull vent tube out of tank lid and insert a thermometer of known
accuracy in vent hole. Reconnect brewer to electrical power.
Place empty container under brew chamber. Energize brewer
and pour one decanter (64 oz.) of cold water into pour-over
opening. When HEAT light goes out, read the temperature
displayed on thermometer.
NOTE: Optimum brewing
temperature is 195ºF to 205ºF
(90ºC to 96ºC).
Maximum temperature setting
should be no more than 205ºF
(96ºC).
Adjust WATER TEMP dial on controller; clockwise increases
temperature. Refer to Table 1 below for proper brewing
temperature based on altitude.
IMPORTANT:
An electronic temperature
controller will maintain
temperature within ±2ºF.
To prevent boiling water in the
brewer, controller should be
adjusted to a maximum
temperature equal to the local
boiling temperature minus 2ºF,
or 205ºF, whichever is less.
BOILING
POINT OF
WATER
210
205
200
IDEAL
BREWING
TEMPERATURE
RANGE
195
190
MAXIMUM
TEMPERATURE
SETTING
ELEVATION (feet above seal level)
Table 1 Boiling Temperature by Altitude
Upon completion, remove thermometer and reinstall vent tube.
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.
BREW TIME ADJUSTMENT
The amount of water dispensed automatically during a brew cycle
is controlled by the SOLENOID TIME dial of the controller.
Place empty decanter under brew chamber. Press BREW
button. Brewer should dispense one full decanter of water. To
adjust amount:
Remove brew chamber and button plug. On the controller, adjust
SOLENOID TIME dial (BREW TIME); clockwise increases time.
Run several cycles to check amount of water delivered.
DRIPOUT TIME ADJUSTMENT
Water delivered to the brew chamber will take a while to drip
through as coffee. The time between the end of a brew and
when a new brew can be initiated is controlled by the BREW
SIGNAL TIMER. Adjust the BREW SIGNAL TIMER dial on the
controller to account for the dripout time. Replace button plug.
REMOVE TANK LID ASSEMBLY
Unplug brewer or turn circuit breaker OFF. Turn OFF water
supply. Remove top panel. Pull vent tube and inlet elbow out of
basin pan.
On automatic models, pull water inlet tube out of basin pan.
Remove basin pan.
Fig. 14 Adjust BrewTime
and Dripout Time
On models with faucet, disconnect inlet pipe at faucet shut-off
valve and outlet pipe at faucet.
IMPORTANT: Before setting
assembly into tank, make sure
tank lid gasket is properly
seated on flange of lid.
Disconnect all wiring from hi-limit and heating element.
Disconnect temperature probe from controller.
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.
DO NOT OVER-TIGHTEN.
Reassemble in reverse order.
REPLACE TEMPERATURE PROBE
IMPORTANT: When replacing
temperature probe, be sure a
new seal washer is in place
around the probe. Tighten jamb
lock nut only enough to ensure
no water leakage. Excessive
tightening is not necessary.
Unplug brewer or turn circuit breaker OFF. Remove top panel.
Loosen and free jam nut from pass-thru fitting securing
temperature probe. Disconnect temperature probe wiring
connector from controller.
Lift out probe, jamb nut and gasket.
Reassemble in reverse order.
REPLACE HEATING ELEMENT
IMPORTANT: When replacing
heating element, also replace
seal gaskets.
Remove tank lid assembly per above.
Remove two hex nuts holding element to cover. Pull element
from mounting holes.
Reassemble in reverse order.
16
SERVICING INSTRUCTIONS (continued)
REPLACE SOLENOID
Unplug power cord. Turn OFF and disconnect water supply from
brewer inlet fitting.
Remove front panel. Remove two screws holding access door in
place. Remove access door and solenoid. Unscrew inlet fitting
cap to release solenoid from door.
Remove wiring from solenoid.
Large end of wrench 86660 can be used to hold solenoid inlet
fitting while disconnecting supply line.
Fig. 15 Fill Solenoid
REPLACE FAUCET SUPPLY HOSE
Unplug power cord. Turn OFF and disconnect water supply from
brewer inlet fitting. Disconnect hose fitting from solenoid (See
illustration at right).
Disconnect hose flare fitting from tank coil fitting.
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.
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.
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.
Examine the aerator. Clean any debris from the screen or flow
straightener, using a stiff bristle brush if necessary.
Fig. 16 86660 Solenoid
Wrench
17
SERVICING INSTRUCTIONS (continued)
Fig. 17 Controller Hook-Up
18
SERVICING INSTRUCTIONS (continued)
SET CONTROLLER JUMPERS
Placing the jumper across Q1 sets Quality Time at 20 Minutes.
Placing the jumper across Q2 sets Quality Time at 30 Minutes.
Removing jumpers from both Q1 or Q2 disables Quality Timer.
Placing the jumper across V1 sets Valve Time Range to
- 180 seconds.
60
Removing jumper from V1 sets Valve Time Range to 10 - 80
seconds.
Fig. 18 Controller Jumpers
REPLACE KEYPAD
Unplug power cord or turn circuit breaker OFF. Shut off water
supply valve. Remove top and front panels.
Remove faucet from basin body.
Disconnect ribbon cable from controller. Pry faceplate/keypad
from basin body. Remove all adhesive residue.
Remove protective backing from adhesive on new keypad.
Note: There is a clear protective wrap on the ribbon cable to
provide abrasion resistance where the cable passes through the
cabinet. Do NOT remove this protective sleeve.
Fig. 19 Keypad Ribbon Cable
Hook-Up
Slide ribbon cable into slot on basin body from the outside, then
carefully apply keypad to face of basin body.
Ribbon cable connects to P2 on controller. Note locator marking
“1” on connector and cable.
Reassemble in reverse order. Test new keypad for function and
proper operation.
REPLACE POWER BOARD
Unplug power cord or turn circuit breaker OFF. Shut off water
supply valve. Remove front panel. Remove water tank lid (see
page 16), then pull tank from cabinet.
Note position of wires at power board, then remove wires.
Suggestion: Marking these wires is highly recommended to ease
reinstallation.
Remove screws holding power board to cabinet. Remove power
board from cabinet.
Reassemble in reverse order. Test for function and proper
operation.
Fig. 20 Power Board Hook-Up
19
SERVICING INSTRUCTIONS (continued)
PROCEDURE: Delime the Water Tank
CAUTION:
CHEMICAL BURN
HAZARD
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. Disconnect brewer from the electrical supply. Turn off the
water shut-off valve and disconnect the water supply line
from the brewer inlet fitting. On right side tank, disconnect
faucet fittings.
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.
2. Remove the tank lid assemblies as described on page 16.
3. Remove the water tanks from the brewer body by lifting
straight up. Empty all water from the tanks. Set the tanks
back into the brewer.
IMPORTANT: DO NOT allow
any internal components to
come into contact with the
deliming solution. Take care to
keep all internal components
dry.
4. For each tank, mix 2 quarts of deliming solution according to
the manufacturer’s directions. Carefully pour the deliming
solution into the tanks. Lower the lid assemblies back
onto the tank. Allow to sit for 30 minutes, or as directed by
the manufacturer.
5. At end of soaking period, remove lid assemblies from tanks.
Thoroughly rinse internal components of lid assemblies with
clear water. Using a stiff bristle brush, scrub the heating
element (and for the right side, the faucet water coil) to
remove lime and calcium build-up. Rinse with clean water.
Store lid assemblies in a safe location .
NOTE: Repeat steps 4 thru 5
as required to remove all scale
and lime build-up.
6. Remove the tanks from the brewer and empty. Using a stiff
bristle brush, scrub the interior of the tanks to remove
lime and calcium build-up. Rinse with clean water.
20
SERVICING INSTRUCTIONS (continued)
7. Set the tanks back into the brewer. Reassemble the tank lid
NOTE: Normally, silicone
hoses do not need to be
delimed. Should deliming
hoses become necessary,
Bloomfield recommends
replacing the hoses.
to the tanks. Make sure the gasket is properly in place, then
reinstall the hold-down strap.
8. Reinstall wiring to heating elements and controller Reinstall
the hi-limit thermostat (if removed). For right side,
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 chambers without filter papers or grounds.
Run at least three full brew cycles and discard all water
generated.
12. Brewer is ready to use.
21
HOT WATER TANK ASSEMBLY
ITEM
PART NO. DESCRIPTION
USED ON
13
14
50
52
54
56
58
59
60
61
62
8043-5
Hold Down Strap
All
All
All
All
All
All
8043-506 Nut, 8-32 SS Acorn
83644
83731
8043-12
8043-30
8540-6
Temperature Probe
Seal Washer
Tank Cover Gasket
Seal Gasket
Hot Water Coil
Inlet Elbow
All - Right Tank Only
All
All
All
All - Right Tank Only
All - Left Tank Only
All
All
8043-8
8043-15
8043-11
8514-68
8512-45
8543-74
8543-73
8043-24
8043-14
8716-1
Vent Tube
Outlet Elbow
Tank Cover (Plate Only, 8-holes)
Tank Cover (Plate Only, 6-holes)
Nut, Hex 4-40 SS
Screw 4-40 x 1 SS Pan Head
Water inlet Tube
Heating Element (120V, 1500W)
Heating Element (230V, 3500W)
Tank Body
64
65
66
67
All
1090, 1092
1091, 1093
All
68
8043-10
COMPLETE SPARE TANK COVER
8541WF-300
8716-300
Spare Cover Assembly (120V, 1500W
With Coil - all parts mounted to cover)
1090, 1092
1091, 1093
Spare Cover Assembly (230V, 3800W
With Coil - all parts mounted to cover)
22
EXPLODED VIEW & PARTS LIST (continued)
ELECTRICAL COMPONENTS
ITEM
PART NO.
DESCRIPTION
USED ON
30
31
36
45
82936
Switch, DPST
Keypad
1091, 1093
1080-10
8552-18
8541-120
85753
85754
83644
8552-50
8043-14
8716-1
1080-226
1080-40
1072-225
All
All
All
Terminal Strip
Solenoid Valve (old-style)
Solenoid Valve w/Bypass (new-style)
Solenoid Valve, Single (new-style)
Temperature Probe
Right Side
Left Side
All
All
1090, 1092
1091, 1093
All
All
All
50
63
67
Hi-Limit Thermostat
Tank Heating Element 120V / 1500W
Tank Heating Element 240V / 3500W
Controller Board
Controller Dial
Power Board
85
86
87
SOLENOID REPAIR KITS
85218
85219
Inlet Fitting Kit (includes cap, fitting,
gasket and strainer)
Inlet Strainer Only
23
INTERNAL PLUMBING COMPONENTS
ITEM
PART NO.
DESCRIPTION
USED ON
8
10
11
12
18
25
29
33
34
34a
43
45
8540-3
8551-30
8514-26
85681
8540-30
8043-13
82556
8543-42
82727
8543-45
8541-46
85753
Faucet Outlet Tube Assembly
1/4“ Male Flare x 1/8” FPT
Needle Valve (Faucet Shut-Off)
Inlet Tube Assembly
Elbow
All
All
All
All
All
All
All
All
All
All
All
Sprayer Elbow
Faucet Assembly
Spray Head Gasket
Spray Disk
Spray Head Retainer
Water Inlet Tube
Solenoid Valve w/Bypass
Solenoid, Single
Inlet Elbow
Right Side
Left Side
All
All
All
All
85754
59
60
61
8043-8
8043-15
8043-11
8541-21
Vent Tube
Outlet Elbow
Basin Pan
108
FAUCET REPAIR KITS
29a
29b
29c
82573
82682
82575
82576
Handle
Retainer Clip
Seat Cup
Faucet Repair Kit (Includes 29a Handle, 29c Seat Cup, 29d Spring, 29h Stem,
29j Pin & 29k Bonnet
84804
84870
Aerator Replacement Kit (Includes 29e O-Ring, 29f Aerator Disk & 29g Aerator Cap
Aerator Repair Kit (Includes 29e O-Ring & 29f Aerator Disk)
24
EXPLODED VIEW & PARTS LIST (continued)
CABINET COMPONENTS
ITEM
PART NO.
DESCRIPTION
USED ON
33
34
34a
70
71
72
8543-42
82727
8543-45
8706-75
82159
82160
84718
8033-55
8033-56
81732
Spray Head Gasket
Spray Disk
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
All
Spray Head Retainer
Button Plug (Timer)
Cap, Plastic, Lower Support
Support, Lower (Right)
Support, Lower (Left)
Leveler, Adjustable Leg
Cap, Adjustable Leg
Adjustable Leg Assembly
Heyco Bushing
Body, Welded Assy
Front Panel
Mounting, Power Board
Access Door, Solenoid
Cover, Pour-Over
Top Panel
73
74
75
101
102
103
104
105
106
108
109
110
200
8543-69
85089
86666
8542-6
8541-21
Basin Pan
Bracket, Hi-Limit Thermostat
Basin Body, Welded Assy
Brew Chamber, Black
Brew Chamber, Brown
Brew Chamber, Stainless
Bloomfield Paper Filter (pk 1000)
All
All
All
All
All
All
8942-6B
8942-6
8707-6
POF
210
25
WIRING DIAGRAM
MODEL VOLTS WATTS AMPS
1090 120/240
1092 120/240
4000
4000
17
17
26
WIRING DIAGRAM (continued)
KEY
PAD
INLET
VALVE
.5 GPM
1
CONTROL
BOARD
P1
P2
1
10
POWER BOARD
TEMPERATURE
PROBE
NEUTRAL IN
VALVE B
E.B.C.™ BREWER
MODEL VOLTS WATTS AMPS
HI
LIMIT
9
HEATER B
1091 115/230
1093 115/230
7000
7000
30.5
VALVE A
LINE IN
30.5
6
4
7
HEATER A
p/n 74880
POWER
SWITCH
HEATING
ELEMENT
1
3
2
5
4
3
2
LEFT SIDE
LEFT SIDE
RIGHT SIDE
RIGHT SIDE
KEY
PAD
INLET
VALVE
.5 GPM
1
CONTROL
BOARD
P1
P2
1
10
POWER BOARD
1
TEMPERATURE
PROBE
NEUTRAL IN
VALVE B
HI
CHASSIS
GROUND
9
LIMIT
HEATER B
VALVE A
LINE IN
6
4
7
HEATER A
POWER
SWITCH
HEATING
ELEMENT
1
5
4
12
11
27
Commercial Food Equipment Service Association
Wells Bloomfield proudly supports CFESA
Commercial Food Equipment Service Association
SERVICE TRAINING - QUAALITY SSEERVICE
Genuine Parts
Protect - YOU - All - Ways
CUSTOMER SATIISFACCTION
WELLS BLOOMFIELD, LLC
2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439
telephone: 775-689-5707
fax: 775-689-5976
PRINTED IN UNITED STATES OF AMERICA
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