Bunn FMD-1 User Manual
BUNN
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FMD-1
(prior to S/N FMD0013000)
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OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
28364.0001 5/00 ©1998 Bunn-O-Matic Corporation
INTRODUCTION
This equipment dispenses hot beverages on demand from powered product. It is for indoor use only on a sturdy
counter or shelf.
WARRANTY
Bunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defects
in material and workmanship existing at the time of manufacture and appearing within one year from the date of
installation. In addition:
1.) Bunn warrants electronic circuit and/or control boards to be commercially free from defects in material and
workmanship for two years from the date of installation.
2.) Bunn warrants the compressor on refrigeration equipment to be commercially free from defects in material
and workmanship for two years from the date of installation.
3.) Bunn warrants that the grinding burrs on coffee grinding equipment will grind coffee to meet original factory
screen sieve analysis for three years from date of installation or for 30,000 pounds of coffee, whichever comes first.
This warranty does not apply to any equipment, component or part that was not manufactured by Bunn or that,
in Bunn’s judgement, has been affected by misuse, neglect, alteration, improper installation or operation, improper
maintenance or repair, damage or casualty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of Bunn are
not authorized to make modifications to this warranty or to make additional warranties that are binding on Bunn.
Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and should not
be relied upon.
The Buyer shall give Bunn prompt notice of any claim to be made under this warranty by telephone at (217)
529-6601 or by writing to Post Office Box 3227, Springfield, Illinois, 62708-3227. If requested by Bunn, the Buyer
shall ship the defective equipment prepaid to an authorized Bunn service location. If Bunn determines, in its sole
discretion, that the equipment does not conform to the warranty, Bunn shall repair the equipment with no charge
for parts during the warranty period and no charge for labor by a Bunn Authorized Service Representative during
the warranty period. If Bunn determines that repair is not feasible, Bunn shall, at its sole option, replace the
equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE
OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AS
SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND.
In no event shall Bunn be liable for any other damage or loss, including, but not limited to, lost profits, lost sales,
loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute
equipment, facilities or services, or any other special, incidental or consequential damages.
USER NOTICES
Carefully read and follow all notices on the equipment and in this manual. They were written for your protection.
All notices are to be kept in good condition. Replace any unreadable or damaged labels.
RELEASE BUTTON WHEN CUP IS 2/3 FULL
PLACE
CUP HERE
28328.0002
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28364 051000
3
INITIAL SET-UP
1. Locate the drip tray assembly beneath the dispenser nested in the packing material.
2. Remove the drip tray and the drip tray cover and set them aside.
3. Remove the water strainer assembly from the drip tray and set it aside.
4. Remove the four legs from the drip tray, apply non-skid pads to the bottom of the legs and securely install
the legs in the dispenser base.
ELECTRICAL REQUIREMENTS
CAUTION - The dispenser must be disconnected from the power source until specified in
The 120 volt version of this dispenser has an attached cordset and requires 2-wire, grounded service rated 120
volts ac, 15 amp, single phase, 60 Hz. The mating connector must be a NEMA 5-15R.
The 120/208 and the 120/240 versions of this dispenser has an attched cordset. The mating connector must be
a NEMA 14-20R.
(
Refer to the dispenser’s dataplate for exact voltage requirement.)
Initial Set-Up.
ELECTRICAL HOOK-UP
CAUTION – Improper electrical installation will damage electronic components.
1. An electrician must provide electrical service as specified.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
3. Open the front door of the dispenser and place the heater switch in the “OFF” (upper position).
4. Connect the dispenser to the power source.
5. If plumbing is to be hooked-up later be sure the dispenser is disconnected from the power source. If
plumbing has been hooked-up, the dispenser is ready for
Initial Fill & Heat.
PLUMBING REQUIREMENTS
This dispenser must be connected to a COLD WATER system with operating pressure between 20 and 90 psi
(138 and 620 kPa) from a 1⁄2" or larger supply line. A shut-off valve should be installed in the line before the
dispenser. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345
kPa). The water inlet fitting is 1⁄4" flare.
NOTE - Bunn-O-Matic recommends 1⁄4" copper tubing for installations of less than 25 feet and 3⁄8" for more than
25 feet from the 1⁄2" water supply line. At least 18 inches of an FDA approved flexible beverage tubing, such as
reinforced braided polyethylene or silicone, before the brewer will facilitate movement to clean the countertop. It
can be purchased direct from Bunn-O-Matic (part number 00326-0000). Bunn-O-Matic does not recommend
the use of a saddle valve to install the brewer. The size and shape of the hole made in the supply line by this type
of device may restrict water flow
This equipment must be installed to comply with the Basic Plumbing Code of the Building
Officials and Code Administrators International, Inc. (BOCA) and the Food Service Sanitation Manual of the Food and Drug Administration (FDA).
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28364 051000
PLUMBING HOOK-UP
1. Securely attach the short piece of tubing on the water strainer assembly to the inlet fitting on the bottom of
the dispenser.
2. Flush the water line and securely attach it to the flare fitting on the water strainer assembly.
3. Turn-on the water supply.
INITIAL FILL & HEAT
CAUTION - The dispenser must be disconnected from the power source throughout the initial set-up, except
when specified in the instructions.
1. Turn-on the water supply and connect the dispenser to the power source.
2. Water will automatically flow into the tank to the proper level and then shut-off. This will take less than five
minutes.
3. When the tank is full of water, open the front door and place the heater switch in the “ON” (lower) position.
A tank full of cold water will take approximately forty minutes for the water to heat on 120 volt versions.
During this waiting period, complete these dispenser set-up steps:
a. Place the drip tray in front of the dispenser. Set the drip tray cover in place.
b. Place a set of keyholes in the cup locator plate over the screws beneath the hopper access door and push
down gently.
c. Fill the hopper with the dry product to be dispensed.
DISPENSER USE
1. Simply place a cup on the drip tray beneath the dispensing tip.
2. Press the button to froth and dispense the beverage.
3. Release the button when the cup is approximately 2/3 full and allow the mixing chamber to drain.
NOTE - The mixing chamber must drain at the end of each dispense.
CLEANING
Refer to the decal inside the hopper access door for cleaning recommendations and procedures.
The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all
surfaces on Bunn-O-Matic equipment.
ADJUSTMENTS
The beverage solenoid is preset to dispense approximately one ounce per second. This amount can be
adjusted:
1. Disconnect the dispenser from the power source.
2. Remove the left side access panel.
3. Rotate the control at the base of the solenoid clockwise to decrease or counterclockwise to increase the
amount of water.
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28364 041598
DRAINING THE HOT WATER TANK
CAUTION - The dispenser must be disconnected from the power source throughout these steps.
1. Disconnect the dispenser from the power source.
2. Open front door and place tank heater switch in the “OFF” (upper) position.
3. Shut-off and disconnect the incoming water supply.
4. Remove the top panel.
5. Gently remove one of the grommets from the tank lid.
6. Insert a tube to the bottom of the tank and syphon ALL of the water out.
(Bunn-O-Matic has a syphon assembly #12440.0000 available for this purpose.)
NOTE - The dispenser must be refilled using the INITIAL FILL & HEAT steps before reconnecting to the power
source.
HOPPER DISPENSE RATE OF PRODUCT
1. Hopper dispense rate with 8 tooth gear and auger wire is approximately 4 to 6 grams per second.
2. Hopper dispense rate with optional 12 tooth gear and auger wire is 6 to 9 grams per second.
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28364 041598
TROUBLESHOOTING
A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems
encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic
Technical Service Department.
• Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
• All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of
terminals or the application of external voltages may result in board failure.
• Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an
intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a
terminal or crimp.
• Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are
energized for more than ten minutes without a supply of water.
• The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help
to avoid twists and kinks in the tubing.
• Make certain that all plumbing connections are sealed and electrical connections tight and isolated.
• This unit is heated at all times. Keep away from combustibles.
WARNING – • Exercise extreme caution when servicing electrical equipment.
• Unplug the dispenser when servicing, except when electrical tests are specified.
• Follow recommended service procedures
• Replace all protective shields or safety notices
PROBLEM PROBABLE CAUSE REMEDY
Product will not dispense 1. No water
Water lines and valves to the dispenser must be open.
2. No power or incorrect voltage to
the dispenser
(A1) Check the outlet for 120 volts
on two wire 120 volt dispenser.
(A2) Check the outlet for 120 volts
on three wire 120/240 volt dispenser.
(B) Check circuit breakers or fuses.
3. Dispense switch
Refer to
for testing procedure. See page 16
4. Dispense solenoid valve
Refer to
valve for testing procedures. See
page 26
Service
Service
- Dispense Switch
- Dispense solenoid
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28364 041598
TROUBLESHOOTING (cont.)
PROBLEM PROBABLE CAUSE REMEDY
Product will not dispense (cont.)
5. Solenoid valve (inlet)
6. Level control board and probe
7. Overflow protection switch
8. Auger drive
9. Water strainer
Refer to
Service
- Solenoid Valve
(Inlet) for testing procedures. See
page 27
Refer to
Service
- Level Control Board
and Probe for testing procedures.
See page 22
Refer to
Service
- Overflow protection switch for testing procedures.
See page 24
Refer to
Service
- Auger Drive. See
page 12
(A) Direction of flow arrow must be
pointing towards brewer.
(B) Remove the strainer and check
for obstructions. Clear or replace.
Water is not hot
10. Lime build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions.
Excessive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious
leaks.
1. Limit thermostat
CAUTION - Do not eliminate or bypass limit thermostat. Use only BOM
replacement part #29329.1000
2. Control thermostat
3. Tank Heater
Inspect the tank assembly for excessive lime deposits. Delime as required.
Refer to
Service
- Limit Thermostat
for testing procedures. See page 24
Refer to
Service
- Control Thermostat for testing procedures. See page
15
Refer to
Service
- Tank Heater for
testing procedures. See page 28
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28364 051000
TROUBLESHOOTING (cont.)
PROBLEM PROBABLE CAUSE REMEDY
Water is not hot (Cont.)
Spitting or excessive steaming
Dripping from dispense tip
4. Tank heater switch
1. Lime build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions.
Excessive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious
leaks.
2. Control thermostat
1. Lime build-up
CAUTION - Tank and tank components should be delimed regularly
depending on local water conditions.
Excessive mineral build-up on stainless steel surfaces can initiate corrosive reactions resulting in serious
leaks.
Refer to
Service
- Tank Heater Switch
for testing procedures. See page 29
Inspect tank assembly for excessive
lime deposits. Delime as required.
Refer to
Service
- Control Thermostat for testing procedures. See
page 15
Inspect the tank assembly for excessive lime deposits. Delime as required.
Water flows into tank continuously
2. Dispense solenoid valve
1. Level control board and probe
2. Solenoid valve (Inlet)
3. Overflow Protection Switch
Remove the dispense solenoid valve
and clear any obstructions. Rebuild
or replace the valve if necessary. See
page 26
Refer to
Service -
Level Control Board
and Probe for testing procedures.
See page 22
Refer to
Service
- Solenoid Valve
(Inlet) for testing procedures. See
page 27
Refer to
Service
- Overflow Protection Switch for testing procedures.
See page 24
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28364 041598
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