1090 1.36M

BLOOMFIELD INDUSTRIES

10 Sunnen Drive

St. Louis, MO 63143 telephone: 800-807-9054 fax: 314-781-2714 www.wellsbloomfield.com

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.

p/n DD-

75908

Rev. F M645

09

0721

645

WARRANTY STATEMENT

All electrical equipment manufactured by WELLS

BLOOMFIELD 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, decanters excluded.

THE FOREGOING OBLIGATION IS EXPRESSLY GIVEN IN

LIEU OF ANY OTHER WARRANTIES, EXPRESSED OR

IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF

MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE, WHICH ARE HEREBY EXCLUDED.

BLOOMFIELD INDUSTRIES DIVISION / SPECIALTY

EQUIPMENT MANUFACTURING CORPORATION SHALL

NOT BE LIABLE FOR INDIRECT, INCIDENTAL OR

CONSEQUENTIAL DAMAGES OR LOSSES FROM ANY

CAUSE WHATSOEVER.

It also does not apply if the serial nameplate has been removed or unauthorized service personnel perform service.

The prices charged by Wells Bloomfield 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 Wells 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).

Wells Bloomfield 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:

This warranty is void if it is determined that upon inspection by an Authorized Service Agency that the equipment has been modified, misused, misapplied, improperly installed, or damaged in transit or by fire, flood or act of God.

Service Parts Department

Wells Bloomfield, LLC

10 Sunnen Dr. P.O. Box 430129

St. Louis, MO 63143 USA

Phone: 1-800-807-9054 Fax: 1-800-396-2677

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 Wells 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.

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

SPECIFICATIONS

FEATURES & OPERATING CONTROLS

PRECAUTIONS & GENERAL INFORMATION

AGENCY LISTING INFORMATION

INSTALLATION INSTRUCTIONS

OPERATION

BREWING COFFEE

CLEANING INSTRUCTIONS

TROUBLESHOOTING SUGGESTIONS

Error Detection

SERVICING INSTRUCTIONS

Deliming Instructions

EXPLODED VIEWS & PARTS LISTS

WIRING DIAGRAMS

20

22

26

11

12

13

14

3

4

6

10

xi

1

2

3

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.

SPECIFICATIONS

MODEL STYLE VOLTS

1090 k

AMPS

WATTS

Thermal 120/240V 4000W

1ø

16.7A

1090R

1091k

1091R

1092k

1092R

1092SS

1093k

1093N

1093R

Thermal 115/230V 7000W

Airpot

Airpot

120/240V 4000W

115/230V 7000W

30.4A

16.7A

30.4A

POWER

SUPPLY

3-Wire (L1,

L2, Neut) plus ground,

Cord NOT

Supplied

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.

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.

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.

AGENCY LISTING INFORMATION

This brewer is and listed under UL file E9253.

This brewer meets Standard 4 only when installed, operated and maintained in accordance with the enclosed instructions.

E9253

E9253

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.

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.

CAUTION:

UNSTABLE

EQUIPMENT HAZARD

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.

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.

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.

Fig. 2 Water Supply Installation

IL1615

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

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.

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:

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.

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


IMPORTANT:

DO NOT energize this brewer until the water tank has been filled. Dry firing will damage heating elements. See page 6.

ELECTRONIC FEATURES

Energizing the Brewer

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.

Fig. 7 Turning Brewer

on

or

off

Fig. 8 Initiate a Brew

Fig 9 Brew Cancel

Brew Settings

See pages 15 & 16 for setting Brew Time and Temperature.

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.

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.

NOTE:

If a brew in progress is cancelled, coffee will continue to flow until all water delivered has dripped through the brew chamber.

8


Quality Timer

Coffee looses freshness as it sits on a warmer. The Quality Timer flashes the warmer lights 30 minutes after the last brew to remind you that the coffee is nearing the end of its useful life.

Quality Timer is normally set for 30 minutes. It can be set for 20 minutes by moving a jumper on the controller. See page 19.

After Hours™ Operation

During normal operation, the controller will maintain the precise brewing temperature. If, however, if the BREW key in not pressed for

3 hours, the brewer goes into After Hours™ mode; any warmer left on will be turned off; and, the temperature will only be maintained to within

20ºF. This feature prolongs component life and saves energy.

As soon as the BREW key is pressed, the brewer returns to normal operation, heating the water to the precise temperature before beginning the brew. The brewer will return to After Hours™ mode only if three hours pass without a brew being initiated.

After Hours™ is an energy saving feature. The brewer will enter After Hours™ mode if it is not used for three hours.

Press the BREW key to immediately return the brewer to normal operation.

Disable/Enable After Hours™ Feature

To disable After Hours™, press the ON/OFF key to turn the brewer

off

.

Press and hold the CANCEL key until two beeps sound, and the HEAT indicator flashes twice. This feature is now disabled.

To re-enable After Hours™, press the ON/OFF key to turn the brewer

off

. Press and hold the CANCEL key until three beeps sound, and the

POWER indicator flashes twice. This feature is now enabled, however, it will not be activated unless no brew is initiated for three hours.

Over-Temperature and Temperature Fault Protection

Should the water temperature exceed 214ºF (101ºC), or if the controller does not detect a 2ºF (1ºC) rise in temperature within four minutes of calling for heat, the brewer will go into Over Temperature Mode; the heating element is turned off, all warmers are disabled and all lights will flash.

•

•

•

•

•

•

Possible causes of Over Temperature condition:

Setpoint is in the boiling range.

Heating element or temperature probe has malfunctioned.

Excessive scale buildup is preventing the element from heating the water.

Heating element relay fails in the “on” state.

No water in the tank.

Hi-limit safety tripped (must be manually reset)

To reset the brewer:

• Determine the cause of the failure and take appropriate remedial

• action to rectify the problem.

Press and hold the CANCEL key for three seconds. Four beeps will sound and the brewer will resume normal operation.

IMPORTANT:

If the original cause of the problem has not been addressed, the brewer will once again go into Over

Temperature mode four minutes after being reset.

9

BREWING COFFEE

CAUTION:

BURN HAZARD

Exposed surfaces of the brewer, brew chamber and airpot or server may be

HOT to the touch, and can cause serious burns.

CAUTION:

BURN HAZARD

To avoid splashing or overflowing hot liquids,

ALWAYS place an empty airpot or server under the brew chamber before starting the brew cycle.

Failure to comply can cause serious burns.

CAUTION:

BURN HAZARD

After a brew cycle, brew chamber contents are

HOT. Remove the brew chamber and dispose of used grounds with care.

Failure to comply can cause serious burns.

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.

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.

A.

PREPARATION

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.

IL1605

Fig. 10 Brew Chamber

B. POUR-OVER OPERATION

NOTE:

Any E..B.C™ brewer can be used in the pour-over mode.

BE sure “HEAT” light is not lit.

Place the appropriate EMPTY airpot or thermal server in place under the brew chamber.

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.

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.

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.

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

PRECAUTIONS: Disconnect brewer from electric power.

Allow brewer to cool.

FREQUENCY: Daily

TOOLS: Mild Detergent, Clean Soft Cloth or Sponge

Bristle Brush.

CAUTION:

BURN HAZARD

Brewing and serving temperatures of coffee are extremely hot.

Hot coffee will cause serious skin burns.

1. Disconnect brewer from electric power.

Allow brewer to cool before cleaning.

2. Remove and empty airpots or thermal servers.

3. Remove and empty brew chambers.

4. Remove spray disks from the brew heads (See figure 8):

Press up on the spray disk ears, and then turn the disk to the left to unlatch. Remove gaskets from inside the brew heads.

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.

9. Reinstall the gaskets INSIDE the brew heads, and then reinstall the spray disks.

10. Reinstall the brew chambers.

11. 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

CAUTION:

SHOCK HAZARD

Do not submerge or immerse brewer in water.

IMPORTANT:

DO NOT use steel wool, sharp objects, or caustic, abrasive or chlorinated cleansers to clean the brewer.

Fig. 11 Cleaning

11

TROUBLESHOOTING SUGGESTIONS

SYMPTOM

Water won’t heat

POSSIBLE CAUSE

Brewer unplugged or circuit breaker tripped

Temperature adjusted too low or set to

off

Hi-Limit thermostat tripped

Damaged internal component or wiring

SUGGESTED REMEDY

Check power supply cord, Check / reset circuit breaker

Turn on and set for desired temperature. See page 15

Allow to cool. Reset hi-limit

Examine wiring & connectors, controller, power board and heating element, Repair/replace as needed

Coffee level too high or low

Brew chamber overflows

Sprays water from brew head

No brew while faucet flows OK

No brew plus no flow from hot water faucet

No flow from hot water faucet

Poor coffee quality

Timer out of adjustment

Too many filter papers or wrong filter paper

Brew chamber dispense hole plugged

Spray gasket improperly installed

Spray disk plugged

Adjust controller. See page 16

Use one (1) genuine Bloomfield filter per brew

Thoroughly clean brew chamber

Check/reinstall gasket on INSIDE of brew head

Clean spray disk

Damaged internal component or wiring

Water supply OFF

Solenoid screen plugged

Water line strainer (if used) plugged

Water filter (if used) plugged

Check keypad, controller, power board

& solenoid, Repair, replace as needed

Turn water supply ON

Clean solenoid screen

Clean strainer

Replace filter element

Faucet valve turned OFF

Faucet plugged

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. 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.

•

•

Error detection (all lights flashing) will occur under two conditions:

Anytime a temperature in excess of 214ºF is detected.

Temperature does not change by at least 2ºF within 4 minutes of tank heater being energized (HEAT light on).

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.

CAUTION:

SHOCK HAZARD

Live electrical circuits may be exposed while performing these procedures.

These procedures are to be performed by qualified technical personnel only.

WHAT TO CHECK

Has the water tank been properly filled?

Has hi-limit safety thermostat tripped off?

Check control board and temp probe.

Check power board and heating element.

Is the brew temperature properly adjusted?

DESCRIPTION CORRECTIVE ACTION

On initial startup, an attempt to heat a dry tank will be detected as too high a temperature or insufficient temp rise, or will trip the high limit.

Tank must be properly filled as detailed on page 6.

Check hi-limit (see below)

Brewer may have been started without water in the tank, or the temp control thermostat may require adjustment.

Brewer will go into error mode immediately if either the control board or temp probe is defective.

Temp probe electrical resistance is approximately 30KW at room temp, and

2KW at boiling. Replace temp probe if less than 1KW.

Brewer will go into error mode 4 minutes 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.

Heating element should receive full line voltage (i.e. 120V, 208V or 240V).

Be sure the hi-limit safety is reset.

The brewer may occasionally go into error mode if the brew temperature is set too high.

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.

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.

Reset by holding the CANCEL key 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.

See page 15 for temperature adjustment procedure.

13

SERVICING INSTRUCTIONS

CAUTION:

SHOCK HAZARD

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.

ACCESS PANELS

TOP PANEL:

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)

TEMPERATURE ADJUSTMENT

Unplug power cord or turn circuit breaker OFF. Remove top panel. Remove button plug from front panel.

CAUTION:

SHOCK HAZARD

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.

Adjust WATER TEMP dial on controller; clockwise increases temperature. Refer to Table 1 below for proper brewing temperature based on altitude.

210

205

200

195

190

0

50

0

1,0

00

1,5

00

2,0

00

2,5

00

3,0

00

3,5

00

4,0

00

4,5

00

5,0

00

5,5

00

ELEVATIO N (feet above seal level)

6,0

00

6,5

00

Table 1 Boiling Temperature by Altitude

BO ILING

PO INT O F

W ATER

IDEAL

BR EW ING

TEM PER ATURE

RANG E

M AXIM UM

TEM PER ATURE

SETTING

Upon completion, remove thermometer and reinstall vent tube.

NOTE:

Optimum brewing temperature is 195ºF to 205ºF

(90ºC to 96ºC).

Maximum temperature setting should be no more than 205ºF

(96ºC).

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.

15


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.

Fig. 14 Adjust BrewTime

and Dripout Time

IMPORTANT:

Before setting assembly into tank, make sure tank lid gasket is properly seated on flange of lid.

DO NOT OVER-TIGhTEN

.

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.

IMPORTANT:

When replacing heating element, also replace seal gaskets.

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.

On models with faucet, disconnect inlet pipe at faucet shut-off valve and outlet pipe at faucet.

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.

Reassemble in reverse order.

REPLACE TEMPERATURE PROBE

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.


REPLACE HEATING ELEMENT

Remove tank lid assembly per above.

Remove two hex nuts holding element to cover. Pull element from mounting holes.


16


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.

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 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. 15 Fill Solenoid

Fig. 16 86660 Solenoid

Wrench

17


IMPORTANT:

When replacing water faucet coil, also replace seal gaskets.

REPLACE HOT WATER FAUCET COIL

(Symptom: Brewer drips continuously from brew head, except when faucet valve is turned OFF.)


Remove two hex nuts hot water coil to cover. Pull coil from mounting holes.


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.

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.

Examine the aerator. Clean any debris from the screen or flow straightener, using a stiff bristle brush if necessary.


RESET HI-LIMIT

Allow brewer to cool. Remove front panel.

Press red button on hi-limit until it clicks and stays in.

Reassemble in reverse order. Test for function and proper operation.

REPLACE CONTROLLER

Unplug power cord or turn circuit breaker OFF.

Remove front panel. Remove timer faceplate. Use needle nose pliers to disengage three barbed fittings holding controller to bracket. Disconnect keypad ribbon cable (note position “1”), temperature probe and power board cable.

Set jumpers as described on page 19.


Adjust controller as described on pages 15 & 16.

Fig. 17 Controller hook-up

18


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 60 - 180 seconds.

Removing jumper from V1 sets Valve Time Range to 10 - 80 seconds.

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.

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.

Fig. 18 Controller Jumpers

Fig. 19 keypad Ribbon Cable

hook-up

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


PROCEDURE: Delime the Water Tank

CAUTION:

CHEMICAL BURN

HAZARD

Deliming chemicals are caustic.

Wear appropriate protective gloves and goggles during this procedure.

Never siphon deliming chemicals or solutions by mouth.

This operation should only be performed by qualified and experienced service personnel.

PRECAUTIONS: Disconnect brewer from electric power.

Allow brewer to cool.

FREQUENCY: As required (Brewer slow to heat)

TOOLS: Deliming Solution

Protective Gloves, Goggles & Apron

Mild Detergent, Clean Soft Cloth or Sponge

Bristle Brush, Bottle Brush

Large Sink (or other appropriate work area)

IMPORTANT:

splash or pour water or deliming solution into or over any internal component other than the inside of the water tank.

IMPORTANT:

dry.

DO NOT allow any internal components to come into contact with the deliming solution. Take care to keep all internal components

NOTE:

DO NOT spill,

Repeat steps 4 thru 5 as required to remove all scale and lime build-up.

NOTE:

Normally, silicone hoses do not need to be delimed. Should deliming hoses become necessary, Bloomfield recommends replacing the hoses.

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.

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.

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.

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.

7. Set the tanks back into the brewer. Reassemble the tank lid to the tanks. Make sure the gasket is properly in place, and 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, and then reinstall the top panel.

9. Reconnect brewer to electrical supply and reconnect water supply.

10. Install the brew chambers without filter papers or grounds.

Run at least three full brew cycles and discard all water generated.

11. Brewer is ready to use.

20

EXPLODED VIEW & PARTS LIST

HOT WATER TANK ASSEMBLY

54

56

58

59

60

61

ITEM

13

14

50

52

62

PART NO.

2C-70134

2C-70133

2V-75664

2I-73731

2I-70147

2I-70152

2N-70149

2K-70101

2V-70102

2K-70103

A6-70142

A6-70221

64

65

66

67

2C-70146

2C-70145

2V-70144

2N-70143UL

2N-70715UL

68

2D-70110

DESCRIPTION

Hold Down Strap

Nut, 8-32 SS Acorn

Temperature Probe

Seal Washer

Tank Cover Gasket

Seal Gasket

Hot Water Coil

Inlet Elbow

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

WS-8541WF-300

WS-8716-300

COMPLETE SPARE TANK COVER

Spare Cover Assembly (120V, 1500W

With Coil - all parts mounted to cover)

Spare Cover Assembly (230V, 3800W

With Coil - all parts mounted to cover)

22

USED ON

All

All

All

All

All

All

All - Right Tank Only

All

All

All

All - Right Tank Only

All - Left Tank Only

All

All

All

1090, 1092

1091, 1093

All

1090, 1092

1091, 1093

EXPLODED VIEW & PARTS LIST (continued)

ELECTRICAL COMPONENTS

ITEM PART NO.

30 2E-72936

31 2C-74859

36 2E-70709

45

2V-70124

2E-75753

2E-75754

50 2J-73644

63 2T-70716

67

2N-70143UL

2N-70715UL

85 2E-74832

86 DD-1080-40

87 2E-74831

WS-85218

WS-85219

DESCRIPTION

Switch, DPST

Keypad

Terminal Strip

Solenoid Valve (old-style)

Solenoid Valve w/Bypass (new-style)

Solenoid Valve, Single (new-style)

Temperature Probe

Hi-Limit Thermostat

Tank Heating Element 120V / 1500W

Tank Heating Element 240V / 3500W

Controller Board

Controller Dial

Power Board

SOLENOID REPAIR KITS

Inlet Fitting Kit (includes cap, fitting, gasket and strainer)

Inlet Strainer Only

USED ON

1091, 1093

All

All

All

Right Side

Left Side

All

All

1090, 1092

1091, 1093

All

All

All

23


INTERNAL PLUMBING COMPONENTS

ITEM

8

10

11

12

PART NO.

2V-70104

2E-70451

2V-70352

2J-75681

34

34a

43

18

25

29

33

2K-70096

2K-70130

WS-82556

2I-70139

A6-72727

A6-70163

A6-70276

2E-75753

45

59

60

61

2E-75754

2K-8043-8

2V-70102

2K-70103

108

2D-70095

DESCRIPTION

Faucet Outlet Tube Assembly

1/4“ Male Flare x 1/8” FPT

Needle Valve (Faucet Shut-Off)

Inlet Tube Assembly

Elbow

Sprayer Elbow

Faucet Assembly

Spray Head Gasket

Spray Disk

Spray Head Retainer

Water Inlet Tube

Solenoid Valve w/Bypass

Solenoid, Single

Inlet Elbow

Vent Tube

Outlet Elbow

Basin Pan

29a

29b

29c

WS-82573

WS-82682

WS-82575

WS-82576

WS-84804

WS-84870

FAUCET REPAIR KITS

Handle

Retainer Clip

Seat Cup

Faucet Repair Kit (Includes 29a Handle, 29c Seat Cup, 29d Spring,

29h Stem, 29j Pin & 29k Bonnet

Aerator Replacement Kit (Includes 29e O-Ring, 29f Aerator Disk &

29g Aerator Cap

Aerator Repair Kit (Includes 29e O-Ring & 29f Aerator Disk)

All

USED ON

All

All

All

All

All

All

All

All

All

All

Right Side

Left Side

All

All

All

All

24


CABINET COMPONENTS

ITEM

33

PART NO.

2I-70139

34 A6-72727

34a A6-70163

70 2P-70053

71

72

73

74

75

101

2P-72159

2A-72160

DD-74718

DD-70214

DD-70217

2A-71732

2K-70229

102

103

104 2Q-75089

105 2F-76666

106 WS-8542-6

108

2D-70095

109

110

2D-70234

200 WS-8942-6

2D-70114

210 WS-POF

DESCRIPTION

Spray Head Gasket

Spray Disk

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

Basin Pan

Bracket, Hi-Limit Thermostat

Basin Body, Welded Assy

Brew Chamber, Black

Brew Chamber, Brown

Brew Chamber, Stainless

Bloomfield Paper Filter (pk 1000)

25

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

All

USED ON

All

All

All

All

All

WIRING DIAGRAM

M ODEL VO LTS WATTS AM PS

1090 120/240 4000 17

1092 120/240 4000 17

26

WIRING DIAGRAM (continued)

1

P1

CO NTR O L

BO ARD

1

P2

TE MP ERATURE

PRO BE

HI

LIMIT

4

6

7

KEY

PAD

PO W ER BO ARD

NEUTRAL IN

VALVE B

HEATE R B

VALVE A

LINE IN

HEATE R A

HEATING

ELEM ENT

1

LEFT SIDE

RIG HT S IDE

1

P1

CO NTR O L

BO ARD

1

P2

TE MP ERATURE

PRO BE

HI

LIMIT

4 6

7

KEY

PAD

PO W ER BO ARD

NEUTRAL IN

VALVE B

HEATE R B

VALVE A

LINE IN

HEATE R A

HEATING

ELEM ENT

1

10

INLET

VALVE

.5 G PM

10

9

E.B.C.™ BREW ER

M ODEL VO LTS WATTS AM PS

1091 115/230 7000

1093 115/230 7000

30.5

30.5

p/n 74880

4

5

PO W ER

SW ITCH

2

3

LEFT SIDE

RIG HT S IDE

3

2

INLET

VALVE

.5 G PM

9

5

4

PO W ER

SW ITCH

12

11

1

CHAS SIS

G RO UND

27

NOTES

28

NOTES

28

NOTES

28

10 SUNNEN DRIVE, P.O. BOX 430129, St. Louis, MO 63143 telephone: 314-781-2777 fax: 314-781-2714

www.wellsbloomfield.com

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