Bunn F-35, F-15, F-20 User Manual

FACTORY AUTHORIZED SERVICE

COFFEE BREWERS

MODELS F-35, F-20, F-15

MODELS ABOVE SERIAL NUMBER*

F·35 57581 F·20 30872 F·15 30179

f(J:\666L ~ ~~ ~:~~

(Stainless)

LISTED r'pproved bYe'"''

F-S

F-WG

(Woodgrain)

OPERATING & SERVICE MANUAL

CONTENTS

Electrician's Insrtallation Instructions 2 Plumber's Installation Instructions 2

Initial Operation Instructions 3 Coffee Brewing Directions 3 CleaningTips 3

WARNING

DISCARD GLASS DECANTER IF

• CRACKED

• SCRATCHED

• BOILED DRY

• HEATED WHEN EMPTY

• USED ON HIGH FLAME OR OPEN ELECTRIC ELEMENTS.

FAILURE TO DO SO MAY RESULT

IN BODILY INJURY.

Trouble ShootingGuide 4 Component Replacement Instructions 8 Schematic Wiring Diagrams 10 Replacement Parts 11 Warranty Back Cover

El ECT RICIAN'S INS TAL lA TION INS T RUCTION S

MODEL f·35

MODELS f·15

& f·20

ELECTRICAL REQUIREMENTS: 1

• MODELS F35 120/240 volts A.C., 60 hertz, 3 wire, single phase. 20 amp. wiring required.

• MODEL F20 120 volts A.C., 60 hertz, 2 wire, single phase. 20 amp. wiring required.

• MODEL F15 120 volts A.C., 60 hertz, single phase, with two wire grounded cord. 15 amp.

WARNING: CHASSIS MUST BE PROPEBL Y GROUNDED TO PREVENT POSSIBLE SHOCK HAZARD. ON CORD CONNECTED MODELS THAT HAVE A GROUNDING LEAD PROVIDED, IF AN ADAPTIVE PLUG MUST BE USED, AN ELECTRICAL GROUND MUST BE PRO-

VIDED. DO NOT ASSUME A PLUMBING LINE WILL PROVIDE SUCH A GROUND.

1. Electrician must provide the outlet, plug to match, and a suitable length of cord or armored cable if not supplied. (Attached power supply cord provided on Model F15).

2. Power is to be left OFF throughout installation.

3. Before connecting electrically, remove front panel via two screws and be sure the thermostat is turned all the way to the left (counterclockwise) to the OFF position. Keep in the OFF position until

tank has been filled with water.

4. Electrical service is connected to the termina"1"block at the front of the brewer. Remove front panal via two screws for access. Strain relief is provided in the rear of the machine.

5. No switch is required. All models should remain connected electrically so heat will be maintained in the water tank.

6. After connecting service as specified, test the voltage on the field wired side with a voltmeter. Should

be as shown above.

7. With power to brewer OFF, replace front panel. If plumbing connection has been made, the coffee '.......,)

brewer is now ready for "Initial Operation Instructions." Refer to page 3. If plumbing is to be done

later, be sure that power is OFF. NOTE: Schematic and pictorial wiring diagrams are located on page 10 of manual. WARNING: Brewer warranty is void if brewer is connected to any voltage other than specified on

nameplate ..

In all installations, the National and-all local electrical codes must be followed.

PLUMBER'S INSTAllATION INSTRUCTIONS

Theequipment isto 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).

i ;

CAUTION: Power to brewer must be OFF

before proceeding with plumbing installation.

1. Flush water line before installing brewer. Brewer should be connected on Cold Water

Line for best operation.

2. Water pressure should be at least 20 Ibs. For less than a 25 ft. run, use 1/4" copper tubing from 1/2" or larger water line_ For more than a

25 ft. run, use 3/8" copper tubing from 1/2" or

larger water line, and provide an adapter fit- ting for conne.ction to the water strainer.

3. Connect incoming water line to the incoming male fitting on the strainer.

A SHUT OFF VALVE SHOULD BE INSTALLED

ON THE INCOMING WATER LINE IN A CON- VENIENT LOCATION.

NOTE: The National Sanitation Foundation requests a provision be made in the incoming water line

for flexibility. This is necessary to allow tilting or moving the brewer for proper cleaning underneath, etc. A tightly coiled length of copper tubing located ahead of the water strainer would help comply with this request.

I: 1

18" COPPER TUBING-LEADS TO SOLENOID MALE FLARE FITTING (SUPPLIED BY BOM)

1/4" FEMALE SAE. FLARE FITTING

/ / (SUPPLIED BY BOM)

/~ WATER STRAINER (SUPPLIED BY BOM)

='::':':''-' " // (SUPPLIED BY PLUMBER)

== ", :""'. /. --,-, COPPER TUBING

U .."..··.-; "'~''- -' . ,/- 1/4" FEMALE SAE. FLARE FITTING

~ .J·t:, ~~UPPLIED BY PLUMBER)

SHuro~ , J(SUPPLIED BY PLUMBER) ~

INITIAL OPERATION INSTRUCTIONS

\-t

4.5.

IMPORTANT: • Brewer must be level or slightly lower f'n front to siphon properly.

NOTE: Be sure thermostat is in OFF position.

Turn power to brewer ON.

Place brewing funnel in proper position for brewing. Place a decanter containing a little water on

center warmer and turn ON-OFF toggle switch to the ON position. This switch must be ON to operate a brew cycle. _

Deflect the start switch. This will start a brew cycle and allow water to flow into the tank. Water will run approximately two minutes before timed cycle ends. Repeat this cycle three additional times;

water should overflow tank into the decanter on center warmer during the fourth cycle. Turn power to brewer OFF. Remove front panel via two screws. Adjust timer to deliver desired amount

of water. To increase amount of water, increase time of water flow by turning timer dial slightly clockwise. To decrease amount of water, decrease time of water flow by turning timer dial slightly

counterclockwise.

6. Turn control thermostat knob fully clockwise to the ON position. Turn power to brewer ON and allow approximately 10 to 20 minutes for water in tank to heat. (F-35 approximately 10 minutes-F-20 ap- proximately 15 minutes-F-15 approximately 20 minutes.) When the water reaches brewing temperature, the contronhermostat will click off and the heating noise will stop. On initial heat up,

normal water expansion will occur in the water tank. Water may drip from the funnel due to this ex- pansion, but will not occur thereafter.

7. Turn on-off switch to the ON position. Place empty decanter on center warmer under the funnel and deflect start switch. Run a partial cycle to remove expanded water from the tank. Now run a full cycle

to check for proper timer setting and to cycle control thermostat.

8. When control thermostat clicks off and heating noise stops, run a cycle to check for proper temperature setting. With an accurate thermometer, take the temperature of the water at the point

below the funnel opening and at the time when the decanter is about half full. Recommended temperature of the water is approximately

level) thermostat may have to be readjusted to prevent boiling.

9. If water volume and temperature are correct, replace front panel. Coffee brewer is now ready for brew- ing coffee.

• Electrician's and Plumber's instructions are provided on page 2. These instructions should be carefully followed before proceeding with initial operation instructions.

• Be sure all electrical and plumbing connections are tight.

1950 F. Due to higher altitude locations (5,000 ft. above sea

COFFEE BREWING DIRECTIONS

FAST, CLEAN, CONVENIENT -BUNN® DISPOSABLE PAPER FILTERS

Drop Bunn filter into funnel.

1. Place Bunn filter in funnel and add desired amount of coffee.

2. Level the bed of coffee and insert funnel in hood guides.

3. Place empty decanter on center warmer under funnel.

4. Turn on-off toggle switch to the "ON" position, deflect start switch and brew a pot of coffee. IMPORTANT! Use Bunn Filters for Bunn Coffee Brewers. There is a differ'ence.

Pour in fresh coffee.

Slide funnel into head and brew.

Simply throw out grounds.

CLEANING TIPS

1. For cleaning all metal surfaces, use any reputable stainless steel cleansing compound.

2. Sprayhead should be checked and cleaned regularly. (At least once a week.) Sprayhead holes must be kept open.

3. To prevent "LIMING" problems in the water tube and air tube, remove sprayhead and insert deliming spring all the way into the tank through both tubes. When inserted into tank properly, no mora than two inches of the spring should be visible. Saw back and forth five or six times. This will keep tubes

open and clear of lime. In hard water areas this should be done every day; this takes less than a

minute.

FACTORY AUTHORIZED SERVICE

TROUBLE SHOOTING GUIDE

MODELS F·35, F·20, F·15

and relay, relay and

Be sure water shut

No Power. 2.

Timer.

Loose connection 5.

Solenoid valve.

Should hear two clicks

With On-Off switch

Start switch.

If start switch does

Be sure contact

Check voltage at

(A)

Cord set and plug

Incoming water lines

Plug and socket con-

Contact points.

If relay does not

On-Off toggle switch.

Switch continuity.

Relay.

Check paddle arm on

(A) Voltage at solenoid

If voltage is

If voltage is not

to solenoid.

would indicate that the

not make and break

switch.

when the start switch

and check for water

side of the solenoid valve.

Installation Instructions"

the micro switch arm

switch is released,

timer, and terminals

If not, check switchcontinuity .

for correct voltage.

deenergizes when start

refer to step 7.

paddle arm is not re-setting and is holding

down. Replace Timer.

contact, replace start

been checked, replacerelay.If relay energizes

at line pressureon the outgoing

start a brew cycle

SYMPTOM

this would indicate a

switch.

warmer should heat.

when micro switch arm

(B)

at terminals and water

solenoid valve.

off valve is open.

nections are tight.

8.(A)

in the ON position,

points are clean.

energize when start

switch is depressed,

defective relay. If

steps 1 thru 5 have

present on the inlet

side of the solenoid,

leased. If not, this

indicator lamp shouldcontact, replace On-Off

light and center

outgoing side, replace

present at terminals

refer to steps 2 thru 7.

(B) If voltage is present

is depressed and re-

at line pressure is

but not present on the

WHAT TO CHECK

POSSIBLE CAUSE

nections between harness

terminal block. Refer

to "Electrician's

1.No Water. 1.

3.If On-Off switch does

not make and break

5.Be sure these con-

REMEDY

is depressed, but

and water shut off valve.

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