manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. Bunn
  6. •
  7. Coffee Maker
  8. •
  9. Bunn GMB-PS Instruction and safety manual

Bunn GMB-PS Instruction and safety manual

Other manuals for GMB-PS

2

Other Bunn Coffee Maker manuals

Bunn Trifecta Troubleshooting guide

Bunn

Bunn Trifecta Troubleshooting guide

Bunn 392 Installation instructions

Bunn

Bunn 392 Installation instructions

Bunn CWA-APS Instruction Manual

Bunn

Bunn CWA-APS Instruction Manual

Bunn CDBCF15-TC User manual

Bunn

Bunn CDBCF15-TC User manual

Bunn VPR TC Instruction and safety manual

Bunn

Bunn VPR TC Instruction and safety manual

Bunn Axiom Series Installation guide

Bunn

Bunn Axiom Series Installation guide

Bunn SLCC-6 Installation instructions

Bunn

Bunn SLCC-6 Installation instructions

Bunn LPG Instruction and safety manual

Bunn

Bunn LPG Instruction and safety manual

Bunn CDBCF15 APS User manual

Bunn

Bunn CDBCF15 APS User manual

Bunn ITB/ITCB Owner's manual

Bunn

Bunn ITB/ITCB Owner's manual

Bunn SRU Instruction Manual

Bunn

Bunn SRU Instruction Manual

Bunn FMD-4 Instruction Manual

Bunn

Bunn FMD-4 Instruction Manual

Bunn GMB-PS Instruction Manual

Bunn

Bunn GMB-PS Instruction Manual

Bunn Trifecta User manual

Bunn

Bunn Trifecta User manual

Bunn Single TF Quick reference guide

Bunn

Bunn Single TF Quick reference guide

Bunn CDBCF Airpot Instruction and safety manual

Bunn

Bunn CDBCF Airpot Instruction and safety manual

Bunn OT Instruction and safety manual

Bunn

Bunn OT Instruction and safety manual

Bunn TITAN SINGLE Troubleshooting guide

Bunn

Bunn TITAN SINGLE Troubleshooting guide

Bunn Single SH Instruction and safety manual

Bunn

Bunn Single SH Instruction and safety manual

Bunn IMIX-3S+ Troubleshooting guide

Bunn

Bunn IMIX-3S+ Troubleshooting guide

Bunn DUAL SH DBC User manual

Bunn

Bunn DUAL SH DBC User manual

Bunn DUAL SH DBC User manual

Bunn

Bunn DUAL SH DBC User manual

Bunn CWTF-TC Configuration guide

Bunn

Bunn CWTF-TC Configuration guide

Bunn Single TF DBC User manual

Bunn

Bunn Single TF DBC User manual

Popular Coffee Maker manuals by other brands

illy FrancisFrancis X7.1 user manual

illy

illy FrancisFrancis X7.1 user manual

Continental Electric CE23601 instruction manual

Continental Electric

Continental Electric CE23601 instruction manual

Electrolux EKF3 series Instruction book

Electrolux

Electrolux EKF3 series Instruction book

MIA KF 1740 instruction manual

MIA

MIA KF 1740 instruction manual

DeLonghi ECAM26455M Instructions for use

DeLonghi

DeLonghi ECAM26455M Instructions for use

Fagor CG-414 D Instructions for use

Fagor

Fagor CG-414 D Instructions for use

Somogyi Elektronic Home HG PR 14 instruction manual

Somogyi Elektronic

Somogyi Elektronic Home HG PR 14 instruction manual

Morphy Richards Accents Espresso MR47580 instructions

Morphy Richards

Morphy Richards Accents Espresso MR47580 instructions

Crux 14634 instruction manual

Crux

Crux 14634 instruction manual

Taurus Livorno 6 manual

Taurus

Taurus Livorno 6 manual

Delta-q QUICK instruction manual

Delta-q

Delta-q QUICK instruction manual

Chris Coffee Service Silvano owner's manual

Chris Coffee Service

Chris Coffee Service Silvano owner's manual

Black & Decker BLACK DECKER HOME DE790 Use and care book

Black & Decker

Black & Decker BLACK DECKER HOME DE790 Use and care book

Saeco Vienna Plus Sup 018M operating instructions

Saeco

Saeco Vienna Plus Sup 018M operating instructions

INCAPTO BXCO1470E Instructions for use

INCAPTO

INCAPTO BXCO1470E Instructions for use

Bosch TASSIMO finesse TAS16B Series user manual

Bosch

Bosch TASSIMO finesse TAS16B Series user manual

Exido 245-072 Specifications

Exido

Exido 245-072 Specifications

Animo OptiVend Choco user manual

Animo

Animo OptiVend Choco user manual

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.

OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 F X: (217) 529-6644
27479.0000D 12/00 ©1996 Bunn-O-Matic Corporation
GMB-PS
CAUTION
DISCARDDECANTER
IF:
. CRACKED
. SCRATCHED
. BOILED DRY
. HEATED WHEN EMPTY
. USED ON HIGH FLAME
. OR EXPOSED ELECTRIC
ELEMENTS
FAILURETOCOMPLYRISKSINJURY
PN:658 1985BUNN-O-MATIC CORPORATION
FUNNELCONTENTS
AREHOT
!
Disconnect from power source
before removal of any panel or
replacement of any component!
WARNING
!
ON
OFFSTART
BUNN
®
Page 2
INTRODUCTION
Thi equipment will brew a half-gallon batch of coffee into an awaiting di pen er at the pu h of a button and
include a hot water faucet for allied beverage u e. It i only for indoor u e on a turdy counter or helf.
W RR NTY
Bunn-O-Matic Corp. (“Bunn”) warrant the equipment manufactured by it to be commercially free from defect
in material and workman hip exi ting at the time of manufacture and appearing within one year from the date of
in tallation. In addition:
1.) Bunn warrant electronic circuit and/or control board to be commercially free from defect in material and
workman hip for two year from the date of in tallation.
2.) Bunn warrant the compre or on refrigeration equipment to be commercially free from defect in material
and workman hip for two year from the date of in tallation.
3.) Bunn warrant that the grinding burr on coffee grinding equipment will grind coffee to meet original factory
creen ieve analy i for three year from date of in tallation or for 30,000 pound of coffee, whichever come fir t.
Thi warranty doe not apply to any equipment, component or part that wa not manufactured by Bunn or that,
in Bunn’ judgement, ha been affected by mi u e, neglect, alteration, improper in tallation or operation, improper
maintenance or repair, damage or ca ualty.
THE FOREGOING W RR NTY IS EXCLUSIVE ND IS IN LIEU OF NY OTHER W RR NTY, WRITTEN OR
OR L, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, NY IMPLIED W RR NTY OF EITHER
MERCH NT BILITY OR FITNESS FOR P RTICUL R PURPOSE. The agent , dealer or employee of Bunn are
not authorized to make modification to thi warranty or to make additional warrantie that are binding on Bunn.
Accordingly, tatement by uch individual , whether oral or written, do not con titute warrantie and hould not
be relied upon.
The Buyer hall give Bunn prompt notice of any claim to be made under thi warranty by telephone at (217)
529-6601 or by writing to Po t Office Box 3227, Springfield, Illinoi , 62708-3227. If reque ted by Bunn, the Buyer
hall hip the defective equipment prepaid to an authorized Bunn ervice location. If Bunn determine , in it ole
di cretion, that the equipment doe not conform to the warranty, Bunn hall repair the equipment with no charge
for part during the warranty period and no charge for labor by a Bunn Authorized Service Repre entative during
the warranty period. If Bunn determine that repair i not fea ible, Bunn hall, at it ole option, replace the
equipment or refund the purcha e price for the equipment.
THE BUYER’S REMEDY G INST BUNN FOR THE BRE CH OF NY OBLIG TION RISING OUT OF THE S LE
OF THIS EQUIPMENT, WHETHER DERIVED FROM W RR NTY OR OTHERWISE, SH LL BE LIMITED, S
SPECIFIED HEREIN, TO REP IR OR, T BUNN’S SOLE OPTION, REPL CEMENT OR REFUND.
In no event hall Bunn be liable for any other damage or lo , including, but not limited to, lo t profit , lo t ale ,
lo of u e of equipment, claim of Buyer’ cu tomer , co t of capital, co t of down time, co t of ub titute
equipment, facilitie or ervice , or any other pecial, incidental or con equential damage .
27479 121500
Page 3
USER NOTICES
Carefully read and follow all notice in thi manual and on the equipment. All label on the equipment hould
be kept in good condition. Replace any unreadable or damaged label .
#00831.0000
This equipment is to 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).
#00656.0000 #10044.0000
!WARNING
FUNNEL CONTENTS
ARE HOT
DISCARD DECANTER
IF:
°CRACKED
°SCRATCHED
°BOILED DRY
°HEATED WHEN EMPTY
°USED ON HIGH FLAME
OR EXPOSED ELECTRIC
ELEMENTS
READ THE ENTIRE OPERATING MANUAL
BEFORE USING THIS PRODUCT
FAILURE TO COMPLY RISKS INJURY
PN: 00658.0000F 6/98 © 1985 BUNN-O-MATIC CORPORATION
00831.0000F 3/98 ©1988 BUNN-O-MATIC CORPORATION
READ THE ENTIRE OPERATING MANUAL
BEFORE BUYING OR USING THIS PRODUCT
THIS APPLIANCE IS HEATED WHENEVER
CONNECTED TO A POWER SOURCE
FAILURE TO COMPLY RISKS EQUIPMENT
DAMAGE, FIRE, OR SHOCK HAZARD
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 natinal/local electrical codes.
Do not use near combustibles.
!
WARNING
#00658.0000
27479 121500
Page 4
ELECTRIC L REQUIREMENTS
C UTION - The brewer mu t be di connected from the power ource until pecified in
Initial Set-Up.
Model 15 ha an attached cord et and require 2-wire grounded ervice rated 120 volt ac, 15 amp, ingle
pha e, 60 Hz.
Model 35 require 3-wire,
grounded ervice rated 120/208 or
120/240 volt ac, 20 amp, ingle
pha e, 60 Hz. Proceed a follow :
Model 20 require 2-wire,
grounded ervice rated 120 volt
ac, 20 amp, ingle pha e, 60 Hz.
Proceed a follow :
Electrical Hook-Up
C UTION – Improper electrical in tallation will damage electronic component .
1. An electrician mu t provide electrical ervice a pecified.
2. U ing a voltmeter, check the voltage and color coding of each conductor at the electrical ource.
3. Remove the rear panel.
4. Feed the cord through the train relief and connect it to the terminal block.
5. Connect the brewer to the power ource and verify the voltage at the terminal block before proceeding. Replace
the rear panel.
6. If plumbing i to be hooked up later be ure the brewer i di connected from the power ource. If plumbing
ha been hooked up, the brewer i ready for
Initial Set-Up
.
PLUMBING REQUIREMENTS
Thi brewer mu t be connected to a cold water y tem with operating pre ure between 20 and 90 p i (138
and 620 kPa) from a 1⁄2" or larger upply line. A hut-off valve hould be in talled in the line before the brewer. In tall
a regulator in the line when pre ure i greater than 90 p i (620 kPa) to reduce it to 50 p i (345 kPa). The water
inlet fitting i 1⁄4" flare.
NOTE - Bunn-O-Matic recommend 1⁄4" copper tubing for in tallation of le than 25 feet and 3⁄8" for more than
25 feet from the 1⁄2" water upply line. A tight coil of copper tubing in the water line will facilitate moving the brewer
to clean the countertop. Bunn-O-Matic doe not recommend the u e of a addle valve to in tall the brewer. The
ize and hape of the hole made in the upply line by thi type of device may re trict water flow.
This equipment must be installed to comply with the Basic Plumbing Code of the
Building Officials and Code dministrators International, Inc. (BOC )
and the Food Service Sanitation Manual of the Food and Drug dministration (FD ).
“ " & "B” model require 2-
wire, grounded ervice rated 200
volt ac or 240 volt ac, 20 amp,
ingle pha e, 50 Hz. Proceed a
follow :
27479 121500
P2185 P2193
WHITE
NEUTRAL
L1 BLACK 120V.A.C.
L2 RED
WHITE
NEUTRAL
L1 BLACK
120 V.A.C.
120 V.A.C.
208 OR 240 V.A.C.
P1841
Page 5
1. Attach the flare fitting from the hort piece of tubing on the trainer
( upplied) to the water inlet fitting at the left rear of the brewer.
2. Flu h the water line and ecurely attach it to the flare fitting on the
trainer.
3. Turn on the water upply.
4. Place an empty ve el beneath the faucet and lift the handle until water
i di pen ed.
PLUMBING REQUIREMENTS (cont.)
INITI L SET-UP
C UTION - The brewer mu t be di connected from the power ource throughout the initial et-up, except when
pecified in the in truction .
1. In ert an empty funnel into the funnel rail .
2. Place an empty di pen er under the funnel.
3. Connect the brewer to the power ource, place the "ON/OFF" witch in the "ON" upper po ition, and momentarily
pre and relea e the tart witch. Water will begin flowing into the tank. When water top flowing into the
tank, initiate a econd, third and a fourth brew cycle. During the fourth brew cycle the tank will fill to it capacity
and the exce water will flow from the prayhead, out of the funnel, and into the di pen er.
4. When the flow of water from the funnel top , wait approximately twenty minute for the water in the tank to
heat to the proper temperature. Some water will drip from the funnel during thi time; thi i due to expan ion
and hould not occur thereafter.
5. Empty the di pen er and initiate another brew cycle.
6. Place the "ON/OFF" witch in the lower "OFF" po ition after water ha topped flowing from the funnel, and let
the water in the tank reheat to the proper temperature.
7. Place the "ON/OFF" witch in the "ON" upper po ition, and momentarily pre and relea e the tart witch. Check
the water volume in the di pen er after water ha topped flowing from the funnel. It hould be 64 ounce .
8. If not, adju t the brew timer a required. See
Adju ting Brew Volume .
Allow the water to reheat, tart, and
mea ure another brew cycle.
9. Repeat tep 8 until 64 oz water volume i achieved.
10. The brewer i now ready for u e in accordance with the coffee brewing in truction on the next page.
DJUSTING BREW VOLUMES
C UTION - Di connect the power ource from the brewer prior to the removal of any panel for the replacement
or adju tment of any component.
NOTE: Prior to etting or modifying batch ize , check that the brewer i connected to water upply, the tank i
properly filled, and a funnel and erver are in place.
1. Modifying batch sizes. To modify a batch volume, fir t check that the SET/LOCK witch i in the "SET"
po ition on the circuit board.
To increase a batch size. Pre and hold the START or BREW witch until three click are heard. Relea e the
witch (Failure to relea e the witch within two econd after the third click cau e the volume etting to be
aborted and previou volume etting will remain in memory) and pre it again one or more time . Each time
the witch i pre ed, two econd are added to the brew time period. Allow the brew cycle to fini h in order
to verify that the de ired volume ha been achieved.
P1939
27479 121500
Page 6 27479 121500
To decrease a batch size. Pre and relea e the START or BREW witch once for every two- econd interval
to be removed from the total brew time period; then immediately pre and hold down the START or BREW
witch until three click are heard. Relea e the witch. (Failure to relea e the witch within two econd after
the third click cau e the volume etting to be aborted and previou volume etting will remain in memory).
Allow the brew cycle to fini h in order to verify that the de ired volume ha been achieved.
2. Setting batch sizes. To et a batch volume, fir t check that the SET/LOCK witch i in the "SET" po ition on
the circuit board. Pre and hold the START or BREW witch until three di tinct click are heard, and then
relea e the witch. (Failure to relea e the witch within two econd after the third click cau e the volume
etting to be aborted and previou volume etting will remain in memory). View the level of the liquid being
di pen ed. When the de ired level i reached, turn the ON/OFF witch to "OFF" (lower). The brewer remem-
ber thi volume and will continue to brew batche of thi ize until the volume etting procedure i repeated.
NOTE: When brewing coffee, batch volume will decrea e due to ab orption by the coffee ground .
3. Setting programming disable feature. If it become nece ary to prevent anyone from changing brew time
once programmed, you can et the SET/LOCK witch to the "LOCK" po ition. Thi will prevent any program-
ming to be done until witch i once again placed in the "SET" po ition.
OPER TING CONTROLS
ON/OFF SWITCH
Placing the "ON/OFF" witch in the "OFF" lower po ition top brewing. Stopping a brew cycle after it ha been
tarted will not top the flow of water into the funnel until the tank yphon down to it proper level. Placing the
witch in the "ON" upper po ition upplie power to the brew circuit.
ST RT SWITCH
Momentarily pre ing and relea ing the witch tart a brew cycle when the "ON/OFF" witch i in the "ON" upper
po ition.
NOTE – The "ON/OFF" witch mu t be in the "ON" upper po ition to initiate and complete a brew cycle.
COFFEE BREWING
1. In ert a BUNN® filter into the funnel.
2. Pour the fre h coffee into the filter and level the bed of ground by gently haking.
3. Slide the funnel into the funnel rail .
4. Place an empty di pen er beneath the funnel.
5. Place the "ON/OFF" witch in the "ON" upper po ition. Momentarily pre and relea e the tart witch.
6. When brewing i completed, imply di card the ground and filter.
CLE NING
1. The u e of a damp cloth rin ed in any mild, non-abra ive, liquid detergent i recommended for cleaning all
urface on Bunn-O-Matic equipment.
2. Check and clean the prayhead. The prayhead hole mu t alway remain open.
3. With the prayhead removed, in ert the deliming pring (provided) all the way into the prayhead tube. When
in erted properly, no more than two inche of pring hould be vi ible. Saw back and forth five or ix time .
NOTE – In hard water area , thi may need to be done daily. It will help prevent liming problem in the brewer
and take le than a minute.
DJUSTING BREW VOLUMES (cont.)
Page 7
TROUBLESHOOTING
A trouble hooting guide i provided to ugge t probable cau e and remedie for the mo t likely problem
encountered. If the problem remain after exhau ting the trouble hooting tep , contact the Bunn-O-Matic
Technical Service Department.
• In pection, te ting, and repair of electrical equipment hould be performed only by qualified ervice per onnel.
• All electronic component have 120 volt ac and low voltage dc potential on their terminal . Shorting of
terminal or the application of external voltage may re ult in board failure.
• Intermittent operation of electronic circuit board i unlikely. Board failure will normally be permanent. If an
intermittent condition i encountered, the cau e will likely be a witch contact or a loo e connection at a
terminal or crimp.
• Solenoid removal require interrupting the water upply to the valve. Damage may re ult if olenoid are
energized for more than ten minute without a upply of water.
• The u e of two wrenche i recommended whenever plumbing fitting are tightened or loo ened. Thi will help
to avoid twi t and kink in the tubing.
• Make certain that all plumbing connection are ealed and electrical connection tight and i olated.
• Thi brewer i heated at all time . Keep away from combu tible .
W RNING – • Exerci e extreme caution when ervicing electrical equipment.
• Unplug the brewer when ervicing, except when electrical te t are pecified.
• Follow recommended ervice procedure
• Replace all protective hield or afety notice
PROBLEM
Brew cycle will not tart
PROB BLE C USE
1. No water
2. No power or incorrect voltage to
the brewer
REMEDY
Water line and valve to the
brewer mu t be open.
(A1) Check the power cord for 120
volt acro the black and white
terminal on two wire 120 volt
brewer .
(A2) Check the terminal block for
120 volt acro the black and
white terminal on two wire 120
volt brewer .
(A3) Check the terminal block for
120 volt acro the red and white
terminal and the black and white
terminal on three wire 120/208
volt or 120/240 volt brewer .
(A4) Check the terminal block for
200 volt on "B Serie " brewer or
240 volt on "A Serie " brewer
acro the red and black termi-
nal .
(B) Check circuit breaker or fu e .
27479 091596
Page 8
TROUBLESHOOTING (cont.)
Brew cycle will not tart (cont.)
Water i not hot
PROB BLE C USE REMEDY
Refer to
Service
- ON/OFF Switch
for te ting. See page 16
Refer to
Service
- Start Switch for
te ting procedure . See page 18
Refer to
Service
- Timer for te ting
procedure . See page 20 or 21
Refer to
Service
- Solenoid Valve
for te ting procedure . See page
17
(A) Direction of flow arrow mu t
be pointing toward brewer.
(B) Remove the flow control and
check for ob truction . Clear or
replace.
(A) Direction of flow arrow mu t
be pointing toward brewer.
(B) Remove trainer and check for
ob truction . Clear or replace.
Refer to
Service
- Limit Thermo-
tat for te ting procedure . See
page 15
Refer to
Service
- Control Ther-
mo tat for te ting procedure . See
page 14
Refer to
Service
- Tank Heater for
te ting procedure . See page19
3. ON/OFF Switch
4. Start Switch
5. Timer
6. Solenoid Valve
7. Water flow control (.222 GPM)
8. Water trainer
1. Limit Thermo tat
C UTION - Do not eliminate or
bypa limit thermo tat. U e only
BOM replacement #29329.1000
2. Control Thermo tat
3. Tank Heater
PROBLEM
27479 121500
Page 9
TROUBLESHOOTING (cont.)
PROBLEM
Incon i tent beverage level in di -
pen er
Con i tently low beverage level in
the di pen er
PROB BLE C USE
1. Flow control (.175 GPM)
2. Strainer
3. Syphon Sy tem
4. Lime Build-up
C UTION - Tank and tank compo-
nent hould be delimed regularly
depending on local water condi-
tion . Exce ive mineral build-up
on tainle teel urface can ini-
tiate corro ive reaction re ulting
in eriou leak .
5. Water Pre ure
1. Timer
2. Flow Control (.175 GPM)
REMEDY
(A) Direction of flow arrow mu t
be pointing toward the brewer.
(B) Remove the flow control and
check for ob truction . Clear or
replace.
(A) Direction of flow arrow mu t
be pointing toward the brewer.
(B) Remove the trainer and check
for ob truction . Clear or replace.
The brewer mu t be level or lightly
lower in front to yphon properly.
In pect the tank a embly for ex-
ce ive lime depo it . Delime a
required.
The water pre ure to the brewer
mu t be at lea t 20 p i (138 kPa).
Timer dial mu t indicate at lea t
two minute and fifteen econd .
(A) Direction of flow arrow mu t
be pointing toward brewer.
(B) Remove the flow control and
check for ob truction . Clear or
replace.
27479 052200
Page 10
TROUBLESHOOTING (cont.)
PROBLEM
Con i tently low beverage level in
the di pen er (cont.)
Spitting or exce ive teaming
Dripping from prayhead
Water flow into tank continuou ly
(ON/OFF Switch "ON")
PROB BLE C USE
3. Strainer
1. Lime Build-up
C UTION - Tank and tank compo-
nent hould be delimed regularly
depending on local water condi-
tion . Exce ive mineral build-up
on tainle teel urface can ini-
tiate corro ive reaction re ulting
in eriou leak .
2. Control Thermo tat
1. Syphon Sy tem
2. Lime Build-up
C UTION - Tank and tank compo-
nent hould be delimed regularly
depending on local water condi-
tion . Exce ive mineral build-up
on tainle teel urface can ini-
tiate corro ive reaction re ulting
in eriou leak .
3. Solenoid Valve
1. Timer
REMEDY
(A) Direction of flow arrow mu t
be pointing toward brewer.
(B) Remove the trainer and check
for ob truction . Clear or replace.
In pect tank a embly for exce -
ive lime depo it . Delime a re-
quired.
Refer to
Service
- Control Ther-
mo tat for te ting procedure . See
page 14
The brewer mu t be level or lightly
lower in front to yphon properly.
In pect the tank a embly for ex-
ce ive lime depo it . Delime a
required.
Remove the olenoid valve and
clear any ob truction . Rebuild or
replace the valve if nece ary.
See page 17
Refer to
Service -
Timer for te ting
procedure . See page 20 or 21
27479 121500