Troubleshooting guide | Bunn 392 Coffeemaker User Manual

392
INSTALLATION & OPERATING MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
40305.0000A 07/07 ©2006 Bunn-O-Matic Corporation
www.bunn.com
INTRODUCTION
This equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It is only for indoor use
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 three 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 in this manual and on the equipment. All labels on the equipment should
be kept in good condition. Replace any unreadable or damaged labels.
#39935.0000
Page 2
XXXXX 04XX07
USER NOTICES (cont.)
! WARNING
Fill water tank before turning - on thermostat or connecting appliance
to power source.
Use only on a properly protected
circuit capable of the rated load.
Electrically ground the chassis.
Follow national/local electrical codes.
Do not use near combustibles.
FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE, OR SHOCK HAZARD
READ THE ENTIRE OPERATING MANUAL
BEFORE BUYING OR USING THIS PRODUCT
39940.0000A 7/07 ©2007 BUNN-O-MATIC CORPORATION
# 39933.0000
# 39940.0000
#39931.0000
# 39929.0000
# 39930.0000
Page 3
XXXXX 04XX07
ELECTRICAL REQUIREMENTS
CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up.
All models have an attached cordset and plug.
US models require 2-wire grounded service rated 120 volts ac, 15 amp, single phase, 60 Hz.
"A" models require 2-wire, grounded service rated 220-240 volts ac, 10 amp, single phase, 50/60 Hz.
"B" models require 2-wire, rated 100 volts ac, 15.0 amp, single phase, 50/60 Hz.
Electrical Hook-Up
CAUTION – Improper electrical installation will damage electronic components.
1. An electrician must provide electrical service as specified on the data plate.
2. Using a voltmeter, check the voltage and color coding of each conductor at the electrical source.
CE Requirements:
• This appliance must be installed in locations where it can be overseen by trained personnel.
• For proper operation, this appliance must be installed where the temperature is between 10°C to 30°C.
• Appliance shall not be tilted more than 10° for safe operation.
• An electrician must provide electrical service as specified in conformance with all local and national codes
• This appliance must not be cleaned by water jet
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given instructions concerning use of
this appliance by a person responsible for its safety.
INITIAL SET-UP
CAUTION - The brewer must be disconnected from the power source throughout the initial set-up, except when
specified in the instructions.
1. Insert an empty funnel into the funnel rails.
2. Place an empty decanter under the funnel.
3. Pour three pitchers of tap water into the screened area on top of the brewer. Allow approximately two minutes
between pitchers for water to flow into the tank. While the third pitcher of water is entering the tank, the tank
will fill to capacity and the excess will flow from the sprayhead, out of the funnel, and into the dispenser.
4. When the flow of water from the funnel stops, connect the brewer to the power source and turn on the power
switch (back of brewer) and wait approximately twenty minutes for the water in the tank to heat to the proper
temperature. Some water will drip from the funnel during this time; this is due to expansion and should not
occur thereafter. Empty the decanter.
5. Pour one pitcher of tap water into the screened area on top of the brewer.
6. After water has stopped flowing from the funnel, allow the water in the tank to completely reheat.
7. Empty the decanter. The brewer is now ready for use in accordance with the coffee brewing instructions.
Page 4
COFFEE BREWING
1.
2.
3.
4.
5.
6.
Insert a BUNN® filter into the funnel.
Pour the fresh coffee into the filter and level the bed of grounds by gently shaking.
Slide the funnel into the funnel rails.
Place an empty decanter beneath the funnel.
Pour one pitcher of tap water into the screened area on top of the brewer.
When brewing is completed, simply discard the grounds and filter.
POUR IN WATER ONLY!
CLEANING
1. 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.
2. Check and clean the sprayhead. The sprayhead holes must always remain open.
3. With the sprayhead removed, insert the deliming spring (provided) all the way into the sprayhead tube.
When inserted properly, no more than two inches of spring should be visible. Push back and forth five or
six times.
NOTE – In hard water areas, this may need to be done daily. It will help prevent liming problems in the brewer
and takes less than a minute.
Page 5
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.
•
•
•
Testing, and repair of electrical equipment should be performed only by qualified service personnel.
All electronic components have 120 volt AC or low voltage DC potential on their terminals. Shorting of terminals or the application of external voltages may result in electrical shock.
This brewer is heated at all times. Keep away from combustibles.
WARNING – • Exercise extreme caution when servicing electrical equipment.
• Unplug the brewer when servicing.
• Follow recommended service procedures
REMEDY
PROBABLE CAUSE
PROBLEM
Beverage overflows decanter
1. Decanter
The decanter must be completely
empty before starting a brew
cycle.
Weak beverage
1. Filter Type
BUNN® paper filters must be used
for proper extraction.
2. Coffee Grind
A fine or drip grind must be used
for proper extraction.
3. Sprayhead
A six-hole stainless steel sprayhead must be used for proper
extraction.
4. Funnel Loading
The BUNN® paper filter must be
centered in the funnel and the
bed of ground leveled by gentle
shaking.
5. Water Temperature
Place an empty funnel on an empty
dispenser beneath the sprayhead.
Initiate a brew cycle and check the
water temperature immediately
below the sprayhead with a thermometer. The reading should not
be less than 195°F (91°C). Adjust
the control thermostat to increase
the water temperature. Replace if
necessary.
1. Funnel Loading
The BUNN® paper filter must be
centered in the funnel and the
bed of grounds leveled by gently
shaking.
Dry coffee grounds remain in the
funnel
Page 6
Page 7
WIRING DIAGRAM
Wiring Harness, Ground # 37403.0000
Wiring Harness,
Main # 37401.0000
Wiring Harness,
Warmer # 37402.0000
18
15
11
16
14
10
17
13
7
12
6
1
5
8
19
9
20
21
22
2
4
23
24
3
25
Page 8
1
37355.0000
1
Funnel Assembly w/Decals
2
39766.0000
1
Pitcher
3
01188.0000
1
Deliming Spring
4
35286.0000
1
Thermostat
5
39772.0000
1
Sprayhead, 6 Hole
6
39775.0000
1
Nut, Hex .438"-20
7
37381.0000
1
Switch, DPST
8
37304.0000
37304.0001
37304.0002
37304.0003
1
1
1
1
Power Cord, 120V
Power Cord, 230V CE
Power Cord, 230V UK
Power Cord, 100V
9
37322.0000
4
Foot, M6 x 1.0 Thread
10
37353.0000
1
Facade, Control Panel
11
37394.0000
37394.0001
2
2
Warmer Assembly 220V
Warmer Assembly 120V
12
37330.0000
37330.0001
1
1
Ready Light, 220V
Ready Light, 120V
13
37352.0000
2
Switch, Warmer
14
37346.0000
1
Upper Hood Trim
15
37351.0000
1
Lid Pour In
16
37347.0000
1
Lid
17
37333.0000
37335.0000
2
2
Side Trim, Right
Side Trim, Left
18
37342.0000
1
Front Facade, Upper Warmer
19
37344.0000
1
Front Facade, Lower Warmer
20
39768.0000
1
Gasket, Tank Inlet
21
37376.0000
1
Syphon Hub
22
39294.0000
39294.0001
39294.0002
1
1
1
Tank Heater, 230V
Tank Heater, 100V
Tank Heater, 120V
23
39590.0000
1
Gasket, Tank Heater
24
01927.0000
04260.0000
1
1
Blanket Warmer, 230V
Blanket Warmer, 120V
The Following Items Are Not Illustrated
25
37386.0000
37386.0001
37386.0002
1
1
1
Tank Assembly, 230V
Tank Assembly, 100V
Tank Assembly, 120V
26
20151.0050
1
Filters, Pack of 50
Page 9
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