Bloomfield 8781A User Manual

628  
OWNERS MANUAL  
for  
AUTOMATIC  
COFFEE / TEA  
BREWERS  
MODEL:  
8781A  
Includes:  
Installation  
Operation  
Use & Care  
Servicing Instructions  
Model 8781A Brewer  
with optional  
8799 3 gallon  
Iced Tea Dispenser  
PRINTED IN UNITED STATES OF AMERICA  
p/n 76201 Rev. F ECN-12898  
M628 050705 cps  
TABLE OF CONTENTS  
WARRANTY STATEMENT  
SPECIFICATIONS  
FEATURES & OPERATING CONTROLS  
Thank You for purchasing this  
Bloomfield Industries appliance.  
xi  
1
2
Proper installation, professional  
operation and consistent  
PRECAUTIONS & GENERAL INFORMATION 3  
AGENCY LISTING INFORMATION  
INSTALLATION INSTRUCTIONS  
OPERATION  
3
4
6
maintenance of this appliance will  
ensure that it gives you the very  
best performance and a long,  
economical service life.  
BREWING COFFEE  
9
BREWING TEA  
10  
11  
12  
14  
19  
20  
22  
23  
This manual contains the  
CLEANING INSTRUCTIONS  
TROUBLESHOOTING SUGGESTIONS  
SERVICING INSTRUCTIONS  
Deliming Instructions  
EXPLODED VIEW & PARTS LIST  
SERVICE KITS  
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  
SPECIFICATIONS  
VOLTS  
1ø  
AMPS  
1ø  
POWER SUPPLY  
CORD  
MODEL  
WATTS  
1500 W  
8781A  
120 VAC  
12.5 A  
6' with NEMA 5-15P  
APPLICABILITY  
This manual applies to the following Bloomfield Industries products:  
8781A  
1
FEATURES AND 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  
Electrical 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  
decanter or dispenser 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  
listed under UL file E9253.  
E9253  
STD 4  
This brewer meets  
operated and maintained in accordance with the enclosed  
instructions.  
Standard 4 only when installed,  
3
INSTALLATION  
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  
Electrical 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.  
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.  
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 12 feet and 3/8" for  
more than 12 feet from a 1/2"  
water supply line.  
4
INSTALLATION (continued)  
NSF requires that the brewer be able to be moved for cleaning  
underneath. Loops of copper tubing will satisfy this requirement.  
See Figure 2 below.  
NOTE: This equipment must be  
installed to comply with all  
applicable federal, state and  
local plumbing codes and  
ordinances.  
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.  
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:  
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  
IMPORTANT: Do not connect  
brewer to electrical power until  
you are ready to fill the tank.  
See instructions at left.  
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  
brewer is connected to the water supply.  
GROUND  
PIN  
Model 8781A is equipped with a cord and plug. It requires a  
115 - 125 volt 20 amp circuit (50/60 Hz, 2 wire plus ground, with  
NEMA 5-15R or 5-20R Receptacle).  
NEMA 5-15R  
RECEPTACLE  
NEMA 5-15P  
PLUG  
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 fit an exist-  
ing receptacle. Contact a li-  
censed electrician to install the  
proper circuit and receptacle.  
5
OPERATION  
Fig. 3 Brewer Operation Diagram  
6
OPERATION (continued)  
A. START-UP  
For initial start-up, or if the brewer has not been used for an  
IMPORTANT:  
Tank must be full of water  
before tank heater switch  
"ON". Heating element  
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.  
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.  
IMPORTANT: Fill the water tank before energizing this unit:  
1. Insert the "COFFEE" brew chamber (empty) and place an empty  
container in place under the brew chamber.  
NOTE:  
After tank is filled, turn the  
tank heater switch "on".  
Brewer will require  
approximately 18 minutes  
to heat water to operating  
temperature.  
2. Be sure the TANK HEATER SWITCH on back of brewer "OFF".  
3. Plug the unit into an appropriate receptacle.  
4. Press COFFEE/TEA switch to "COFFEE". Press BREW SWITCH.  
Water will begin filling the tank. When the water fill stops, press the  
switch again. Repeat until water flows from the brew chamber.  
This will usually require running three (3) cycles.  
5. When water starts to flow from the brew chamber, tank is full.  
When all dripping has stopped, discard all water in container.  
6. Turn TANK HEAT SWITCH "ON". 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.  
B. OPERATIONAL NOTES  
1. COFFEE  
a. When brewing coffee, be sure to use the "coffee" brew  
chamber (uses the tall rack, and does not state "tea only" on  
the outside of the shell).  
b. Press the COFFEE/TEA switch to "COFFEE".  
c. COFFEE MODE will brew 64 oz. of coffee.  
d. Use a standard 64 oz. decanter.  
2. TEA  
a. When brewing tea, be sure to use the "tea" brew chamber  
(uses the short rack, and states "tea only" on the outside of the  
shell).  
b. Press the COFFEE/TEA switch to "TEA".  
c. Select either "1 gallon" or "3 gallon brew".  
d. Use a dispenser of the appropriate size. Be sure dispenser is  
positioned so that water from the BYPASS NOZZLE flows into  
the dispenser.  
7
OPERATION (continued)  
WATER HEATER  
Water temperature is sensed by a thermobulb  
inserted into the water tank. This temperature signal  
is fed to the mechanical thermostat.  
The setpoint temperature is adjustable. Heating  
element is energized by the thermostat.  
Excessive temperature will trip the hi-limit safety  
switch. The hi-limit will automatically reset when the  
brewer cools.  
WATER FLOW  
Fig. 4 Heat Control Diagram  
AUTOMATIC OPERATION  
In COFFEE mode, pressing the BREW switch  
causes the timer to energize the coffee brew  
solenoid valve. This allows water from an external  
water supply to flow into the water tank.  
In TEA mode, pressing the BREW switch causes  
the timer to energize the tea brew solenoid valve.  
This allows water from an external water supply to  
flow into the water tank. Additionally, the tea bypass  
solenoid is energized, sending cold dilution water  
from an external source to the dispenser.  
Water flowing into the tank forces a like amount of  
heated water out of the tank to perform the brew.  
POUR-OVER OPTION  
If an external water source is unavailable, one  
decanter of cold water may be poured into the  
pour-over opening to brew coffee. Pour-over is not  
recommended for brewing tea.  
AUTOMATIC OPERATION TIMER  
The length of time a brew or bypass solenoid is open  
is controlled by the timer. The timer signal is routed  
to either the coffee brew solenoid, or to the tea brew  
and bypass solenoids, according to the position of  
the mode switch.  
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 either  
brew solenoid valve.  
Hot water is provided at the faucet, at supply water  
pressure, any time the faucet shut-off valve is OPEN.  
Fig. 5 Water Flow Diagram  
8
BREWING COFFEE  
A. PREPARATION  
CAUTION:  
Burn Hazard  
Examine the coffee brew chamber  
to verify that the tall the wire rack  
is in place.  
Exposed surfaces of the  
brewer, brew chamber and  
decanter may be HOT to  
the touch, and can cause  
serious burns.  
Place one (1) genuine Bloomfield  
paper filter into the wire rack in the  
coffee brew chamber.  
Add a pre-measured amount of  
fresh coffee grounds.  
CAUTION:  
Burn Hazard  
Gently shake the brew chamber to  
level the bed of grounds.  
To avoid splashing or  
overflowing hot liquids,  
ALWAYS place an empty  
decanter under the brew  
chamber before starting  
the brew cycle. Failure to  
comply can cause serious  
burns.  
Slide the brew chamber into place  
under the brew head.  
Fig. 6 Coffee Brew Chamber  
B. AUTOMATIC OPERATION  
BE sure “READY TO BREW” light is lit.  
Place the appropriate EMPTY decanter in place under the brew  
chamber.  
Press the "COFFEE/TEA" switch to "COFFEE".  
CAUTION:  
Burn Hazard  
Press the “BREW” switch. The coffee brew solenoid will open for  
an amount of time determined by the timer setting, admitting a  
measured quantity of water into the tank.  
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.  
Inlet water 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  
decanter under the brew chamber.  
When the flow and all dripping stops at the end of the brew cycle,  
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.  
9
BREWING TEA  
CAUTION:  
Burn Hazard  
A. PREPARATION  
Examine the tea brew chamber  
to verify that the short the wire rack  
is in place.  
Exposed surfaces of the  
brewer, brew chamber and  
dispenser may be HOT to  
the touch, and can cause  
serious burns.  
Place one (1) genuine Bloomfield  
paper filter into the wire rack in the  
tea brew chamber.  
Add an amount of fresh tea leaves  
to the brew chamber appropriate to  
the desired 1 gallon or 3 gallon  
brew volume.  
CAUTION:  
Burn Hazard  
To avoid splashing or  
overflowing hot liquids,  
ALWAYS place an empty  
dispenser under the brew  
chamber before starting  
the brew cycle. Failure to  
comply can cause serious  
burns.  
Gently shake the brew chamber to  
level the bed of tea leaves.  
Fig. 7 Tea Brew Chamber  
Slide the brew chamber into place  
under the brew head.  
B. AUTOMATIC OPERATION  
BE sure “READY TO BREW” light is lit.  
Place the appropriate EMPTY dispenser in place under the brew  
chamber. If a brew-thru lid is used, be sure the bypass opening in  
the lid is directly under the bypass nozzle.  
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.  
Press the "COFFEE/TEA" switch to "TEA".  
Press the "TEA VOLUME SELECTOR" switch to either "1 GAL" or  
"3GAL" position as desired  
Press the “BREW” switch. The coffee brew solenoid will open for  
an amount of time determined by the timer setting, admitting a  
measured quantity of water into the tank.  
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.  
Inlet water 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  
dispenser. Additionally, a measured amount of cold dilution water  
will flow from the bypass nozzle into the dispenser.  
When the flow and all dripping stops at the end of the brew cycle,  
the tea 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  
CAUTION:  
Burn Hazard  
PROCEDURE: Clean Coffee/Tea Brewer  
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, Bottle Brush  
CAUTION:  
Electric Shock  
Hazard  
1. Disconnect brewer from electric power.  
Allow brewer to cool before cleaning.  
Do not submerge or immerse  
brewer in water.  
2. Remove decanter or dispenser.  
3. Remove and empty brew chamber.  
IMPORTANT:  
4. Remove the spray disk from the brew head (See figure 8):  
Press up on the spray disk ears, then turn the disk to the left  
to unlatch. Remove the gasket from inside the brew head.  
DO NOT use steel wool, sharp  
objects, or caustic, abrasive or  
chlorinated cleansers to clean  
the brewer, decanters or  
dispensers.  
5. Wipe inside of brew head and area around the brew head  
with a soft clean cloth or sponge moistened with clean water.  
6. Wash the spray disk in a sink using warm water and a mild  
detergent. A bristle brush may be used to clear clogged  
spray holes. Rinse the spray disk with clean water and allow  
to air dry.  
7. Wash the brew chamber 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.  
8. Wipe the exterior of the brewer with a soft clean cloth or  
sponge moistened with clean water.  
10. Reinstall the gasket INSIDE the brew head, then reinstall the  
spray disk.  
11. Be sure the wire rack is in place in the brew chamber, then  
reinstall the brew chamber.  
12. Clean decanters and dispensers by filling with warm soapy  
water. Scrub the inside of decanters 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.  
Fig. 8 Cleaning  
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 setpoint too low  
Hi-Limit safety switch tripped  
Set for desired temperature  
Allow to cool hi-limit will self-  
reset  
Damaged internal component or Examine wiring & connectors,  
wiring  
thermostat and heating element  
Repair/replace as needed  
Coffee level too high or low  
Coffee level (only) too low  
Tea level too high or low  
Timer out of adjustment  
Adjust timer  
Plugged coffee solenoid strainer Clean strainer  
Proper volume not selected  
Set tea volume selector switch  
to desired volume  
Tea level (only) too low  
Brew chamber overflows  
Plugged tea solenoid strainer  
"TEA" not selected  
Clean strainer  
Press COFFEE/TEA switch to  
"TEA"  
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  
Wire rack not in place  
Install proper wire rack  
Too much coffee or too fine a  
grind  
Use correct grind and amount  
of coffee  
Sprays water from brew head  
No brew (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 Check brew switch, wiring  
wiring  
& solenoid. Repair, replace as  
needed  
No dilution flow from bypass  
nozzle  
"TEA" not selected  
Press COFFEE/TEA switch to  
"TEA"  
Damaged internal component or Check wiring & tea bypass  
wiring  
solenoid. Repair, replace as  
needed  
No brew plus no flow from hot  
water faucet  
Water supply OFF  
Turn water supply ON  
Water filter (if used) plugged  
Faucet valve turned OFF  
Faucet plugged  
Replace filter element  
Turn faucet valve ON  
Disassemble faucet, clean  
No flow from hot water faucet  
12  
TROUBLESHOOTING SUGGESTIONS  
SYMPTOM  
SUGGESTED REMEDY  
Poor coffee quality  
Keep brewer, brew chamber 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. Freshly ground coffee beans  
make the best coffee beverage.  
Be sure to use the coffee brew chamber with the tall wire rack.  
Poor tea quality  
Keep brewer, brew chamber and dispenser clean.  
Install a taste and odor filter in water supply, and replace cartridges  
regularly.  
Use a quality tea. Use proper amount of tea leaves per brew for  
the selected brew volume.  
Be sure to use the tea brew chamber with the short wire rack.  
13  
SERVICING INSTRUCTIONS  
ACCESS PANELS  
CAUTION  
Electric Shock  
Hazard  
TOP PANEL:  
Remove top panel to access hot water tank, thermostat, heating  
element, brew circuit tubing, faucet valve and piping, and  
switches.  
Opening access panels on this  
brew may expose uninsulated  
electrical components.  
Disconnect brewer from  
electrical power before  
Top panel is held by two screws at the rear and a retaining lip at  
the front.  
FRONT PANEL:  
removing any panel.  
Remove front panel to access timer, wiring and bypass nozzle  
plumbing connections.  
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 and electrical  
connections.  
Solenoid door is held by two screws and a retaining lip.  
Fig. 9 Access Panels  
14  
SERVICING INSTRUCTIONS  
TEMPERATURE ADJUSTMENT  
CAUTION  
Electric Shock  
Hazard  
Unplug power cord or turn circuit breaker OFF. Remove top  
panel.  
These procedures involve  
exposed electrical circuits.  
These procedures are to be  
performed by qualified  
Pull vent tube out of tank lid and insert a thermometer of known  
accuracy in hole. Reconnect brewer to electrical power.  
Place empty container under brew chamber. Energize brewer  
and allow unit to heat. When the READY TO BREW light first  
glows, read the temperature displayed on thermometer.  
technical personnel only.  
Adjust thermostat by turning shaft; clockwise increases  
temperature. 1/8 turn = approximately 10ºF, or 5.6ºC.  
Refer to Table 1 below for proper brewing temperature based on  
altitude.  
NOTE: Optimum brewing  
temperature is 195ºF to 205ºF  
(90ºC to 96ºC).  
Thermostat should be adjusted  
to a maximum temperature of  
200ºF (95ºC).  
IMPORTANT:  
A mechanical thermostatwill  
maintain temperature within  
±5ºF.  
To prevent boiling water in the  
brewer, controller should be  
adjusted to a maximum  
temperature equal to the local  
boiling temperature minus 5ºF,  
or 200ºF (94ºC), whichever is  
less.  
Upon completion, remove thermometer and reinstall the vent line  
and top panel.  
Fig. 10 Checking and Adjusting Brew Temperature  
BOILING  
POINT OF  
WATER  
210  
205  
200  
IDEAL  
BREWING  
TEMPERATURE  
MAXIMUM  
TEMPERATURE  
SETTING  
195  
190  
NOTE: 1/8 turn = approximately  
10ºF (5.6ºC).  
ELEVATION (feet above seal level)  
BOILING  
POINT OF  
WATER  
100  
97  
Fig. 11 Adjust Thermostat  
IDEAL  
BREWING  
TEMPERATURE  
RANGE  
94  
91  
88  
MAXIMUM  
TEMPERATURE  
SETTING  
ELEVATION (meters above seal level)  
Table 1 Boiling Temperature by Altitude  
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.  
SOLENOID TIME ADJUSTMENT  
The amount of water dispensed automatically during a brew cycle  
is controlled by the timer. This adjustment must be performed in  
the COFFEE mode.  
Place empty decanter under brew chamber. Press BREW  
switch. Brewer should dispense one full decanter of water. To  
adjust amount:  
Remove brew chamber and button plug. Adjust timer; clockwise  
increases time. Run several cycles to check amount of water  
delivered. Replace button plug.  
REMOVE TANK LID ASSEMBLY  
Unplug brewer or turn circuit breaker OFF. Turn OFF water  
supply. Remove top panel.  
Disconnect brew fill and outlet tubes from tank lid fittings.  
Disconnect faucet supply and outlet tubes from flare fittings on  
tank lid.  
Disconnect all wiring from thermostat, hi-limit and heating  
element.  
Fig. 12 Adjust Solenoid Time  
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.  
IMPORTANT: Before setting  
assembly into tank, make sure  
tank lid gasket is properly  
seated on flange of lid.  
REPLACE THERMOSTAT  
Unplug brewer or turn circuit breaker OFF. Turn OFF water  
supply. Remove top panel.  
IMPORTANT: When mounting  
thermostat, be sure a new seal  
washer is placed below the  
fitting on the capillary line.  
Push sensing bulb thru tank lid  
until fitting seats.  
Disconnect all wiring from thermostat only. Loosen and free jam  
nut from pass-thru fitting securing temperature sensing bulb.  
Remove two screws holding thermostat to bracket.  
Lift out thermostat, sensing bulb and thermostat gasket.  
Reassemble in reverse order.  
Tighten capillary lock nut only  
enough to ensure no water  
leakage. Excessive tightening  
is not necessary.  
REPLACE HEATING ELEMENT  
Remove tank lid assembly per above.  
Remove two hex nuts holding element to cover. Pull element  
from mounting holes.  
IMPORTANT: When replacing  
heating element, also replace  
seal gaskets.  
Reassemble in reverse order.  
16  
SERVICING INSTRUCTIONS (continued)  
REPLACE SOLENOID  
Symptom: Automatic brewer will not flow water; or,  
automatic brewer drips continuously from brew head.  
Unplug power cord or turn circuit breaker OFF. Turn OFF and  
disconnect water supply from brewer inlet fitting.  
Unscrew water inlet fitting from solenoid.  
Remove two screws holding access door in place. Remove two  
screws holding solenoid to door.  
Remove brew water tube from solenoid. On faucet side, remove  
faucet water tube from bypass side of solenoid by pressing the  
white ring portion of the tube fitting tightly against the metal  
portion while pulling the tube off of the solenoid.  
Disconnect wiring from solenoid.  
Transfer solenoid bracket to new solenoid.  
Reassemble in reverse order.  
CLEAN SOLENOID SCREEN  
Fig. 13 Remove Faucet  
Supply from Solenoid  
Symptom: Automatic brewer will not flow water.  
Unplug power cord or turn circuit breaker OFF. Turn OFF and  
disconnect water supply from brewer inlet fitting.  
Unscrew water inlet fitting from solenoid.  
Using needle-nose pliers, withdraw strainer screen from solenoid.  
Clean screen under faucet. A stiff bristle brush may be used if  
necessary.  
Reinsert screen in solenoid. Be careful to maintain correct  
orientation. (The OPEN END of the screen goes in FIRST.)  
Reassemble in reverse order.  
Fig. 14 Clean Strainer Screen  
REPLACE TIMER ASSEMBLY  
Unplug power cord or turn circuit breaker OFF.  
Remove front panel. Remove knob and three screws holding  
timer to bracket. Disconnect wiring to timer.  
Reassemble in reverse order.  
Adjust timer as described on page 13  
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.  
Reassemble in reverse order.  
17  
SERVICING INSTRUCTIONS (continued)  
NOTE: Any abrasion or  
roughness on the flat end of the  
seat cup will require replacing  
the seat cup:  
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.  
Work the seat cup out of the  
bonnet and off of the end of the  
stem.  
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.  
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.  
Reassemble in reverse order.  
REPLACE CONTROL PANEL LIGHT or SWITCH  
Unplug power cord or turn circuit breaker OFF.  
Using Switch Removal Tool (p/n 83209) to remove TEA VOLUME  
SELECT, BREW SWITCH or STOP BREW switch. Use a thin  
screwdriver to pry light or COFFEE/TEA switch from mounting  
hole. Disconnect leads.  
Reassemble in reverse order.  
SEAT CUP  
Fig. 15 Faucet Repair  
18  
SERVICING INSTRUCTIONS (continued)  
CAUTION -  
CHEMICAL BURN  
HAZARD  
PROCEDURE: Delime the Water Tank  
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. Unplug power cord. Turn off the water shut-off valve and  
disconnect the water supply line from the brewer inlet fitting.  
2. Remove the tank lid assembly as described on page 13.  
3. Remove the water tank from the brewer body by lifting  
straight up. Empty all water from the tank. Set the tank back  
into the brewer.  
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.  
4. Mix 2 quarts of deliming solution according to the  
manufacturer’s directions. Carefully pour the deliming  
solution into the water tank. Lower the lid assembly back  
onto the tank. Allow to sit for 30 minutes, or as directed by  
the manufacturer.  
IMPORTANT: DO NOT allow  
any internal components to  
come into contact with the  
deliming solution. Take care to  
keep all internal components  
dry.  
5. At end of soaking period, remove lid assembly from tank.  
Thoroughly rinse internal components of lid assembly with  
clear water. Using a stiff bristle brush, scrub the heating  
element and faucet water coil to remove lime and calcium  
build-up. Rinse with clean water. Store lid assembly in a safe  
location.  
6. Remove the tank from the brewer and empty. Using a stiff  
bristle brush, scrub the interior of the water tank to remove  
lime and calcium build-up. Rinse with clean water.  
NOTE: Repeat steps 4 thru 5  
as required to remove all scale  
and lime build-up.  
7. Set the tank back into the brewer. Reassemble the tank lid to  
the water tank. Make sure the gasket is properly in place,  
then reinstall lid clamps.  
NOTE: Normally, silicone  
hoses do not need to be  
delimed. Should deliming  
hoses become necessary,  
Bloomfield recommends  
replacing the hoses.  
8. Reinstall wiring to heating element and thermostat.  
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 chamber without filter paper or grounds.  
Run at least three full brew cycles and discard all water  
generated.  
12. Brewer is ready to use.  
19  
8781A EXPLODED VIEWS & PARTS LIST  
20  
8781A EXPLODED VIEWS & PARTS LIST (continued)  
21  
8781A SERVICE KITS  
SERVICE KITS  
FAUCET REPAIR KITS  
82573 Handle  
82575 Seat Cup  
82576 Faucet Repair Kit (Includes Handle, Seat Cup,  
Spring, Stem, Pin & Bonnet  
82682 Retainer Clip  
84804 Aerator Replacement Kit (Includes O-Ring,  
Aerator Disk & Aerator Cap  
84870 Aerator Repair Kit (Includes O-Ring & Aerator  
Disk)  
SOLENOID REPAIR KITS  
73282 Solenoid Complete, Dual (.60 gpm + .19 gpm)  
75685 Solenoid, Complete, (.75 gpm with Bypass)  
85218 Inlet Fitting Kit (Includes Screen, Washer, Inlet  
Fitting & Cap)  
85219 Inlet Strainer  
TANK LID ASSEMBLY  
8541WF-300 Spare Cover Assembly (120V,  
1500W, With Hot Water Coil - all  
parts mounted to cover)  
22  
8781A WIRING DIAGRAM  
23  
Bloomfield Industries, Inc.  
Division of Carrier Commercial Refrigeration  
In US and Canada  
Telephone: 775-698-5700  
Fax:  
Fax:  
888-492-2783  
800-356-5142 (for orders only)  
PRINTED IN UNITED STATES OF AMERICA  

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