Bloomfield ELECTRONIC BREW CONTROL 1091 User Manual

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 30Kat room temp, and  
2Kat 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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