Bloomfield 8778 Operation Manual
10 Sunnen Drive
St. Louis, MO 63143
telephone: 314-678-6336
fax: 314-781-2714
www.wellsbloomfield.com
BLOOMFIELD INDUSTRIES
622
OWNERS MANUAL
for
AIRPOT &
THERMAL SERVER
COFFEE BREWERS
Model 8780 Brewer
with optional
7750 Thermal Server
MODELS
8778 8780 8782
8783 8785 8786
8788
Includes:
Installation
Use & Care
Servicing Instructions
p/n 2M-75854 Rev. F M622 110501
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
le “CONCEALED DAMAGE” claim with them. This
must be done within fteen (15) days from the date
the delivery was made to you. Be sure to retain the
container for inspection.
Wells Bloomeld 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.
WARRANTY STATEMENT
SERVICE POLICY AND PROCEDURE GUIDE
ADDITIONAL WARRANTY EXCLUSIONS
SHIPPING DAMAGE CLAIMS PROCEDURE
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
specied 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
uctuating, 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.
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 rst, and is for
the benet 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 SHALL NOT BE LIABLE
FOR INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OR LOSSES FROM ANY CAUSE
WHATSOEVER.
This warranty is void if it is determined that upon inspection
by an Authorized Service Agency that the equipment has
been modied, misused, misapplied, improperly installed, or
damaged in transit or by re, ood or act of God.
It also does not apply if the serial nameplate has been
removed or unauthorized service personnel perform service.
The prices charged by Bloomeld 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 Bloomeld 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, specic
limitations are shown below (Additional Warranty Exclusions).
Bloomeld Industries Authorized Service Agencies are located
in principal cities.
This warranty is valid in the United States and void elsewhere.
Please consult your classied telephone directory or your food
service equipment dealer; or, for information and other details
concerning warranty, write to:
Service Parts Department
Wells Bloomeld, LLC
10 Sunnen Drive, St. Louis, MO 63143
Phone: (314) 678-6336... Fax: (314) 781-2714
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 Bloomeld replacement parts are warranted
for ninety (90) days from date of purchase on non-
warranted equipment. Any use of non-genuine
Bloomeld 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.
xi
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
TABLE OF CONTENTS
WARRANTY STATEMENT xi
SPECIFICATIONS 1
FEATURES & OPERATING CONTROLS 2
PRECAUTIONS & GENERAL INFORMATION 3
AGENCY LISTING INFORMATION 3
INSTALLATION INSTRUCTIONS 4
OPERATION 6
BREWING COFFEE 8
CLEANING INSTRUCTIONS 9
TROUBLESHOOTING SUGGESTIONS 10
SERVICING INSTRUCTIONS 11
Deliming Instructions 16
EXPLODED VIEWS & PARTS LISTS 18
WIRING DIAGRAMS 22
SPECIFICATIONS
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
Thank You for purchasing this
Wells Bloomeld 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.
MODEL STYLE VOLTS WATTS AMPS 1ø POWER SUPPLY CORD
8778
8778CAk 120C 1500 12.5 NEMA 5-15P
8778 UK 230UK 1800
THERMAL
8778 EURO 230V 1800 CEE 7/VII
8780
8780CAk 120 1500 12.5 NEMA 5-15P
8780 UK 230UK 1800
THERMAL
8780 EURO 230V 1800 CEE 7/VII
8782
120V 1800 15 NEMA 5-15P
7.8
CW 3100
120 1800 15 NEMA 5-15P
7.8
CW 3100
120 1800 15 NEMA 5-15P
8782CAk 120 1500 12.5 NEMA 5-15P
8782XL 120 1800 15 NEMA 5-15P
8782XLCAk 120 1500 12.5 NEMA 5-15P
8782 UK 230UK 1800
8782 EURO 230V 1800 CEE 7/VII
8783
8783CAk 120 1500 12.5 NEMA 5-15P
8785
AIRPOT
AIRPOT
7.8
CW 3100
120 1800 15 NEMA 5-15P
120 1800 15 NEMA 5-15P
8785CAk 120 1500 12.5 NEMA 5-15P
8785XL 120 1800 15 NEMA 5-15P
8785XLPI 240 1800 7.5 NEMA 1-15P (non-polarized)
8785 UK 230UK 1800
8785 EURO 230V 1800 CEE 7/VII
8786 THERMAL
AIRPOT
115/230 4 WIRE
230V
7.8
CW 3100
3500 15 NONE
8788 AIRPOT 115/230 4 WIRE 3500 5 NONE
k Meets Canadian standards.
1
IL1705
NOT AVAILABLE ON
MODELS 8782 or 8785
AIROT
(BREWING
POSITION)
HOT WATER
FAUCET
BREW
SWITCH
POUR-OVER
COVER
POUR-OVER
OPENING
“READY TO
BREW” LIGHT
FEATURES AND OPERATING CONTROLS
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
Fig. 1 Features & Operating Controls
2
PRECAUTIONS AND GENERAL INFORMATION
E9253
E9253
STD 4
WARNING
WARNING
WARNING
WARNING
WARNING: ELECTRIC SHOCK HAZARD
All servicing requiring access to non-insulated components must be performed by qualied
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 qualied 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
qualied 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 le E9253.
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.
NOTE: Model 8785XLPI is not UL approved
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
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:
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
EQUIPMENT HAZARD
It is very important for safety
and for proper operation that the
brewer is level and stable when
standing in its nal 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.
Bloomeld 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.
REFER TO EXPLODED VIEWS PAGES 18 thru 21 FOR
COMPONENT NAMES/NUMBERS
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 (#33) and Spray Disk (#34)
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 (AUTOMATIC
BREWERS ONLY)
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 ush the line prior to installing the saddle.
The brewer must be installed on a water line with average
pressure between 10 PSI and 90 PSI. If your water pressure
exceeds 90 PSI at anytime, a pressure regulator must be
installed in the water supply line to limit the pressure to not more
than 90 PSI in order to avoid damage to lines and solenoid.
A water shut-off valve should be installed on the incoming water
line in a convenient location (Use a low restriction type valve,
such as a 1/4-turn ball valve, to avoid loss of water ow thru the
valve.
NSF requires that the brewer be able to be moved for cleaning
underneath. A ex line or loops of copper tubing will satisfy this
requirement. See Fig. 2 at right.
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
4
COPPER LOOPS OR
FLEX LINES
(PROVIDED BY
PLUMBER)
SHUT-OFF VALVE
(PROVIDED BY
PLUMBER)
FLOW
WATER
SUPPLY
WATER INLET
FITTING
SOLENOID
STRAINER
WASHER
IL1615
WARNING
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
INSTALLATION INSTRUCTIONS (continued)
Fig. 2 Water Supply Installation
In some areas, local codes require a backow preventer (check
valve) to be installed on the inlet water line. If a backow
preventer is used, you must install a water hammer arrester
in the incoming line, between the backow 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.
Models 8778, 8780, 8782, 8783 & 8785 (120V units) are
equipped with a cord and plug. They require a 115 - 125 volt
15 amp circuit (50/60 Hz, 2 wire plus ground, with NEMA 5-15R
receptacle).
IMPORTANT: The ground prong of the plug is part of a system
designed to protect you from electrical shock in the event of
internal damage. Never cut off the ground prong nor twist a
blade to t an existing receptacle. Contact a licensed electrician
to install the proper circuit and receptacle.
Models 8786 & 8788 must be wired by an electrician, and
require a 115/230V 20A circuit (50/60 Hz, 2 hot legs / 1 neutral
leg, 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 3500 Watts.
See gure 3 at right.
IMPORTANT: Wiring must be installed in approved solid or
exible conduit, and must be secured to the brewer with a strain
relief (to be provided by the installer).
NOTE: This equipment must
be installed in compliance with
all 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 lled with water.
Pour water into the pour-over
opening until water ows 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.
Fig. 3 115/240 Volt Terminal Block
5
OPERATION
IL1706
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.
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.
For automatic brewers, be sure the water supply is properly
connected and the water supply valve is turned ON.
BEFORE plugging the brewer into a receptacle, or otherwise
connecting brewer to electrical power ThE WATER TANk MuST
BE FIllED. Place an empty container under the brew head. Lift
the pour-over cover then pour warm tap water into the pour-over
opening until water ows from the brew head. When water stops
dripping from the brew head, empty the container.
Once the tank is full of water, connect the brewer to electrical
power. The heating elements will begin heating the water in the
tank. When the water has reached the proper temperature, the
“READY TO BREW” light will glow.
START-UP
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
6
IL1654
HI-LIMIT
THERMOSTAT
THERMOBULB
HEATER
ELEMENT
MANUAL
POUR-OVER
MANUAL
POUR-OVER
BASIN
PAN
BASIN
PAN
FAUCET
SHUT-OFF
VALVE
FAUCET
BYPASS
FAUCET
BYPASS
SOLENOID
SOLENOID
FAUCET
TANK
WATER
COIL
HOT
WATER
BREW
BREW
TANK
TANK
THERMOSTAT
OPERATION (continued)
WATER HEATER
Water temperature is sensed by a
thermobulb inserted into the water tank.
This temperature signal is fed to the
thermostat, which controls line power to the
heating element.
The setpoint temperature is adjustable at the
thermostat.
The element is protected from overtemperature by a hi-limit thermostat.
WATER FLOW
POUR-OVER FEATURE
Pouring any amount of cold water into the
pour-over opening and into the basin pan
forces an identical amount of hot water out
of the tank and through the spray head into
the brew chamber.
AUTOMATIC OPERATION
Pressing BREW button energizes the
solenoid valve, allowing water from an
external water supply to ow into the basin
pan and then into the hot water tank. This
forces an identical amount of hot water out
of the tank and through the spray head into
the brew chamber
The solenoid uses a ow control device so
that ow is consistent between 20 p.s.i. and
90 p.s.i.
Length of time the solenoid is open is
controlled by the timer.
Fig. 5 heat Control Diagram
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.
622 2M-75854 Owners Manual Gourmet 1000 Airpot/Thermal
Fig. 6 Water Flow Diagram
7
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