Bloomfield ELECTRONIC BREW CONTROL 1091 User Manual
WELLS BLOOMFIELD, LLC
2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439
telephone: 775-689-5707
www.wellsbloomfield.com
fax: 775-689-5976
645
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
Other U. S. and Canadian patents pending.
U. S. Patent # 5, 704,275
PRINTED IN UNITED STATES OF AMERICA
p/n 75908 Rev. E ECN-13385 M645 071107 cps
WARRANTY STATEMENT
All electrical equipment manufactured by WELLS
BLOOMFIELD, LLC is warranted against defects in materials
and workmanship for a period of one year from the date of
original installation or eighteen (18) months from the date of
shipment from our factory, whichever comes first, and is for
the benefit of the original purchaser, except that:
a. airpots carry a 30 day parts warranty only.
b. dispensers; i.e., tea and coffee carry a 90 days parts
warranty only, excludes decanters.
THE FOREGOING OBLIGATION IS EXPRESSLY GIVEN IN
LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE, WHICH ARE HEREBY EXCLUDED.
WELLS BLOOMFIELD, LLC
FOR INDIRECT, INCIDENTAL OR
DAMAGES OR LOSSES FROM ANY CAUSE
WHATSOEVER.
This warranty is void if it is determined that upon inspection by
an Authorized Service Agency that the equipment has been
modified, misused, misapplied, improperly installed, or
damaged in transit or by fire, flood or act of God.
SHALL
NOT BE LIABLE
CONSEQUENTIAL
It also does not apply if the serial nameplate has been
removed or unauthorized service personnel perform service.
The prices charged by Bloomfield Industries for its products
are based upon the limitations in this warranty. Seller’s
obligation under this warranty is limited to the repair of defects
without charge by a Bloomfield Authorized Service Agency or
one of its sub-agencies. This service will be provided on
customer’s premises for non-portable models. Portable
models (a device with a cord and plug) must be taken or
shipped to the closest Authorized Service Agency, transportation charges prepaid, for services.
In addition to restrictions contained in this warranty, specific
limitations are shown below (Additional Warranty Exclusions).
Bloomfield Industries Authorized Service Agencies are located
in principal cities.
This warranty is valid in the United States and void elsewhere.
Please consult your classified telephone directory or your food
service equipment dealer; or, for information and other details
concerning warranty, write to:
Phone: (775) 689-5707 Fax: (775) 689-5976
SERVICE POLICY AND PROCEDURE GUIDE
ADDITIONAL WARRANTY EXCLUSIONS
1. Resetting of safety thermostats, circuit breakers,
overload protectors, or fuse replacements unless
warranted conditions are the cause.
2. All problems due to operation at voltages other than
specified on equipment nameplates; conversion to
correct voltage must be the customer’s responsibility.
3. All problems due to electrical connections not made in
accordance with electrical code requirements and
wiring diagrams supplied with the equipment.
4. Replacement of items subject to normal wear, to include
such items as knobs and light bulbs. Normal maintenance
functions including adjustment of thermostats, microswitches,
and replacement of fuses and indicating lights are not
covered under warranty.
5. All problems due to inadequate water supply, such as
fluctuating, or high or low water pressure.
6. All problems due to mineral/calcium deposits, or
contamination from chlorides/chlorines. De-liming is
considered a preventative maintenance function and is
not covered by warranty.
7. Full use, care and maintenance instructions are supplied
with each machine. Those miscellaneous adjustments
noted are customer responsibility. Proper attention will
prolong the life of the machine.
8. Travel mileage is limited to sixty (60) miles from an
authorized Service Agency or one of its sub-agencies.
9. All labor shall be performed during normal working hours.
Overtime premium shall be charged to the customer.
10. All genuine Bloomfield replacement parts are warranted
for ninety (90) days from date of purchase on non warranted equipment. Any use of non-genuine
Bloomfield parts completely voids any warranty.
11. Installation, labor and job check-out are not considered
warranty.
12. Charges incurred by delays, waiting time or operating
restrictions that hinder the service technicians ability
to perform services are not covered by warranty.
This includes institutional and correctional facilities.
Service Parts Department
Wells Bloomfield, LLC
P.O. Box 280
Verdi, NV 89439
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
SHIPPING DAMAGE CLAIMS PROCEDURE
NOTE: For your protection, please note that equipment in
this shipment was carefully inspected and packaged by
skilled personnel before leaving the factory.
Upon acceptance of this shipment, the transportation
company assumes full responsibility for its safe delivery.
IF SHIPMENT ARRIVES DAMAGED:
1. VISIBLE LOSS OR DAMAGE: Be certain that any
visible loss or damage is noted on the freight bill
or express receipt, and that the note of loss or damage
is signed by the delivery person.
2. FILE CLAIM FOR DAMAGE IMMEDIATELY:
Regardless of the extent of the damage.
3. CONCEALED LOSS OR DAMAGE: if damage is
unnoticed until the merchandise is unpacked, notify the
transportation company or carrier immediately, and file
“CONCEALED DAMAGE” claim with them. This
must be done within fifteen (15) days from the date the
delivery was made to you. Be sure to retain the
container for inspection.
Wells Bloomfield cannot assume liability for damage or loss
incurred in transit. We will, however, at your request, supply
you with the necessary documents to support your claim.
xi
TABLE OF CONTENTS
WARRANTY STATEMENT xi
SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 3
INSTALLATION INSTRUCTIONS 4
OPERATION 6
BREWING COFFEE 10
CLEANING INSTRUCTIONS 11
TROUBLESHOOTING SUGGESTIONS 12
Error Detection 13
SERVICING INSTRUCTIONS 14
Deliming Instructions 20
EXPLODED VIEWS & PARTS LISTS 22
Thank You for purchasing this
Wells Bloomfield appliance.
Proper installation, professional
operation and consistent
maintenance of this appliance will
ensure that it gives you the very
best performance and a long,
economical service life.
This manual contains the
information needed to properly
install this appliance, and to use,
care for and maintain or repair the
appliance in a manner which will
ensure its optimum performance.
WIRING DIAGRAMS 26
SPECIFICATIONS
AMPS POWER SUPPLY
MODEL STYLE VOLTS WATTS 1ø
1090k Thermal 120/240V 4000W 16.7A
1090R
1091k Thermal 115/230V 7000W 30.4A 3-Wire (L1, L2, Neut)
1091R plus ground
1092k Airpot 120/240V 4000W 16.7A Cord NOT SUPPLIED
1092R
1092SS
1093k Airpot 115/230V 7000W 30.4A
1093N
1093R
k Meets Canadian Standards
APPLICABILITY
This manual applies to the following Wells Bloomfield E. B. C. ® products:
1090 1090R
1091 1091R
1092 1092R 1092SS
1093 1093NF 1093R
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
1
FEATURES AND OPERATING CONTROLS
Fig. 1 Features & Operating Controls
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
2
PRECAUTIONS AND GENERAL INFORMATION
3
WARNING: ELECTRIC SHOCK HAZARD
All servicing requiring access to non-insulated components must be performed by qualified
service personnel. Do not open any access panels which require the use of tools.
Failure to heed this warning can result in electrical shock.
WARNING: INJURY HAZARD
All installation procedures must be performed by qualified personnel with full knowledge of all
applicable electrical and plumbing codes. Failure could result in property damage and
personal injury.
WARNING: ELECTRIC SHOCK HAZARD
Brewer must be properly grounded to prevent possible shock hazard. DO NOT assume a
plumbing line will provide such a ground. Electrical shock will cause death or se rious Injury.
WARNING: BURN HAZARD
This appliance dispenses very hot liquid. Serious bodily injury from scalding can occur from
contact with dispensed liquids.
This appliance is intended for commercial use only.
This appliance is intended for use to brew beverage products for
human consumption. No other use is recommended or
authorized by the manufacturer or its agents.
This appliance is intended for use in commercial establishments,
where all operators are familiar with the appliance use,
limitations and associated hazards. Operating instructions and
warnings must be read and understood by all operators and
users.
Except as noted, this piece of equipment is made in the USA
and has American sizes on hardware. All metric conversions
are approximate and can vary in size.
The following trouble shooting, component views and parts lists
are included for general reference, and are intended for use by
qualified service personnel.
This manual should be considered a permanent part of this
appliance. The manual must remain with the appliance if it is
sold or moved to another location.
AGENCY LISTING INFORMATION
This brewer is and
This brewer meets
listed under UL file E9253.
Standard 4 only when installed,
CAUTION:
EQUIPMENT DAMAGE
DO NOT plug in or energize this
appliance until all Installation
Instructions are read and followed.
Damage to the Brewer will occur if
these instructions are not followed.
CAUTION:
BURN HAZARD
Exposed surfaces of the
appliance, brew chamber and
Airpot or Server may be HOT to
the touch, and can cause serious
burns.
E9253
E925
operated and maintained in accordance with the enclosed
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
instructions.
STD 4
3
INSTALLATION INSTRUCTIONS
READ THIS CAREFULLY BEFORE STARTING THE INSTALLATION
IMPORTANT:
To enable the installer to make
a quality installation and to
minimize installation time, the
following suggestions and tests
should be done before the
actual unit installation is started:
CAUTION:
EQUIPMENT DAMAGE
DO NOT plug in or energize this
appliance until all Installation
Instructions are read and
followed. Damage to the
Brewer will occur if these
instructions are not followed.
CAUTION:
UNSTABLE
It is very important for safety
and for proper operation that the
brewer is level and stable when
standing in its final operating
position. Provided adjustable,
non-skid legs must be installed
at each corner of the unit.
Failure to do so will result in
movement of the brewer which
can cause personal Injury and/
or damage to brewer.
NOTE: Water supply inlet line
must meet certain minimum
criteria to insure successful
operation of the brewer.
Bloomfield recommends 1/4"
copper tubing for installation of
less than 25 feet and 3/8" for
more than 25 feet from a 1/2"
water supply line.
EQUIPMENT HAZARD
Unpack the unit. Inspect all components for completeness and
condition. Ensure that all packing materials have been removed
from the unit.
Verify that the Spray Head Gasket and Spray Disk are properly
installed.
LEVELING THE UNIT
Verify that an adjustable leg is installed at each corner of the
brewer, and that a rubber foot is installed on each leg.
Set Brewer in its operating location. Level the Brewer. A spirit
level should be placed on the top of the unit, at the edge, as a
guide when making level adjustments.
Level the unit from left to right and front to back by turning the
adjustable feet. Be sure all four feet touch the counter to prevent
tipping.
PLUMBER’S INSTALLATION INSTRUCTIONS
Brewer should be connected to a POTABLE WATER, COLD
WATER line. Flush water line before connecting to Brewer.
DO NOT use a saddle valve with a self-piercing tap for the water
line connection. Such a tap can become restricted by waterline
debris. For systems that must use a saddle tap, shut off the main
water supply and drill a 3/16” (minimum) tap for the saddle
connection, in order to insure an ample water supply. Remember
to flush the line prior to installing the saddle.
The brewer must be installed on a water line with average
pressure between 20 PSI and 90 PSI. If your water pressure
exceeds 90 PSI at anytime, a pressure regulator must be
installed in the water supply line to limit the pressure to not more
than 90 PSI in order to avoid damage to lines and solenoid.
Plumber must provide two 1/4” female flare water supplies for this
brewer.
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.
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
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.
Fig. 2 Water Supply Installation
In some areas, local codes require a backflow preventer (check
valve) to be installed on the inlet water line. If a backflow
preventer is used, you must install a water hammer arrester in
the incoming line, between the backflow preventer and the
brewer inlet, as far away from the brewer as space will allow.
This will relieve the excessive back pressures that can cause
faucet leaks and solenoid malfunctions.
ELECTRICIAN’S INSTALLATION INSTRUCTIONS
REFER TO ELECTRICAL SPECIFICATIONS - Page 1
Check the nameplate to determine correct electrical service
required for the Brewer to be installed.
IMPORTANT: Before connecting to electricity, make sure
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).
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.
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.
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
Fig. 3 115/240V Terminal Block
5
OPERATION
Fig. 4 Brewer Operation Diagram
IMPORTANT:
Tank must be full of water
before connecting brewer
to electrical power.
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
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.
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
6
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.
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
OPERATION (continued)
Fig. 5 Heat Control Diagram
645 75908 Owners Manual E.B.C. Dual Airpot/Thermal Brewer
Fig. 6 Water Flow Diagram
7
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