Grindmaster Cecilware PrecisionBrew PBC-2A2 User manual

PrecisionBrew™Coffee Brewers
Operator Manual
Original language
Grindmaster-Cecilware
4003 Collins Lane, Louisville, KY 40245 USA
Phone: [phone] Toll Free: 800.695.4500
Fax: [phone]
Web: gmcw.com Email: [e-mail]
Safety Information..................2
Additional Notices ..................5
Installation...............................7
Start up....................................8
Operation ................................9
Control Features....................10
Adjustments ..........................10
Air-Heated Shuttle Lighting.11
Programming ........................11
Cleaning.................................13
Maintenance .........................14
Special Control Functions .....15
Troubleshooting Guide.........16
Thermistor Chart...................23
Parts Diagram and List..........23
Wiring Diagram.....................54
Thank you for purchasing this quality brewer. For your safety and the safety of others, read all warnings and the
operator manual before installing or using the product. Properly instruct all operators. Keep training records. For
future reference, record serial number here:
Table of Contents
©2018 Grindmaster-Cecilware
Printed in USA
1118 Form # BW-345-01
Part # 390-00124
Model shown:
PBC-2A2
EN DA DE ES FI FR IT NL NO SV

GB Series Cecilware®2
2 Grindmaster®Coffee Brewers
To reduce risk of electrical shock, do not remove side panels. No user-serviceable parts inside. Repair should be
done by authorized service personnel only.
Do not alter or deform the power cord or plug in any way! Altering or deforming the plug may cause electrical
shock or damage unit.
Follow national and local electrical codes.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified
persons in order to avoid a hazard.
Do not clean with a water jet or use in an area where a water jet may be used.
Cleaning and maintenance shall be made only by properly trained persons with supervision.
Do not remove shuttle or basket while product is brewing.
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 supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
To reduce risk of expolsion or fire, do not use near combustibles.
The appliance is not intended for outdoor use.
Installation of this appliance should be performed by authorized service personnel only. Improper installation
could result in electrocution.
To reduce the risk of electrical shock, unplug the dispenser power cord before repairing or replacing any internal
components of the unit. Before any attempt to replace a component, be sure to check all electrical connections
for proper contact. Only a qualified service technician should perform electrical and mechanical adjustments or
repairs.
Electrically ground the chassis.
Never use the ground conductor as a neutral. This could cause electrocution.
Dangerous electric voltages are present near adjustable components. All adjustments should be performed by
qualified service personnel only.
For your safety and the safety of others, read all warnings and the operator’s manual before installing or using
the product.
DANGER: This term warns the user of imminent hazard that will result in serious injury or death.
WARNING: This term refers to a potential hazard or unsafe practice, which could result in serious injury or death.
CAUTION: This term refers to a potential hazard or unsafe practice, which could result in minor or moderate
injury.
NOTICE: This term refers to information that needs special attention or must be fully understood.
WARNING
Safety Information
This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety
messages that follow this symbol to avoid possible injury or death.
This symbol means read the operator manual for important safety information.
This symbol means electrical shock hazard. Failure to follow safety instructions may cause electrical harm.
This symbol means do not use unit with damaged plug or cable or electrical shock hazard may result.
This symbol means hot surface. Contacting hot surfaces may cause burns.
This symbol means mechanical hazard. To avoid mechanical hazards, only qualified service technicians
should open this panel to perform electrical and mechanical adjustments or repairs.
This symbol means electrical shock hazard. To avoid electrical hazards, only qualified service technicians
should open this panel to perform electrical and mechanical adjustments or repairs.

Coffee Brewers Grindmaster®3
Dangerous voltages and hot surfaces are present inside the machine. Maintenance should only be performed
by qualified service personnel.
Do not place any potentially flammable materials on or near brewer or server base at any time.
For safe and proper operation, the appliance must be placed in a stable, vertical position.
To reduce risk of serious burns or scalding, do not place hand or other body parts under dispenser or container
while product is brewing.
This appliance is designed for brewing coffee. Any other use is deemed improper.
Always unplug unit or disconnect from power supply before servicing.
Hot liquid in brew basket could cause burns. Remove with care. Brew basket contains very hot water until the
drip is completed. Early removal of a dripping basket could result in burns. Do not remove shuttle or basket
while product is brewing.
Warmers and surfaces are hot and can cause burns.
Do not transport brewer without draining water tank(s) first.
Water in tank is very hot. Draining of tank should be performed by a qualified service technician. Use caution
when draining tank. Accidental spills may result in severe burns.
Water used for brewing coffee is very hot. Use caution when brewing, pouring, or transporting coffee.
Accidental spills may result in severe burns.
Hot liquids and surfaces are present in this equipment. To avoid burns, use caution when cleaning. Rinse hot
parts with cold water before cleaning. Use gloves or a heavy cloth when removing hot parts from brewer.
If brewer is intended for professional use only, brewer must be installed in locations where its use and
maintenance is restricted to trained personnel. If brewer is intended to be used by untrained persons, brewer
must be installed in locations where it can be overseen by trained personnel.
Risk of burns. Decrease tank temperature at elevations higher than 1200 m or 4000 ft above sea level.
This appliance is designed for brewing coffee. Any other use is deemed improper.
Always unplug unit from power supply before servicing.
Hot liquid in brew basket could cause burns. Remove with care.
Warmers and surfaces are hot and can cause burns.
Risk of burns. Decrease tank temperature at elevations higher than 1200 m or 4000 ft above sea level.
Always confirm that the coffee grind profile and brew selection settings allow for safe operation without
overflowing the brew basket and allow for safe draining of the brew basket after the end of the brew cycle.
Do not stack or place anything solid or liquid on top of machine greater than (1) kilogram (2 pounds) to prevent
risk of internal damage or short circuit.
CAUTION
Safety Information (continued)
WARNING

4 Grindmaster®Coffee Brewers
Ambient temperatures must be between 4°C and 40°C.
Do not use extension cord.
Airborne noise emissions: Measured A-weighted noise levels of the product are 53 dB(A).
This equipment must be installed in compliance with applicable Federal, State, and/or Local plumbing codes
having jurisdiction. This product requires an approved back flow prevention water device, such as a double
check valve, to be installed between the machine and the water supply.
Incoming pressure must be greater than 200 kPa and not more than 550 kPa. If water pressure could be greater
than 550 kPa, a pressure reducer must be installed that limits water pressure to the appliance.
Use new hose-sets. Do not reuse old hose-sets.
Brewer is suitable for use at any elevation. However, becasue water boils at lower temperatures as elevation
increases, the tank temperature must be lowered for higher altitudes.
The person installing this appliance is responsible for ensuring that electric and water connections meet the
requirements of the national electric code, national plumbing code, and any local ordinances.
Double brewers only are provided with dual independent heating tanks. The L1 leg of single phase double
brewers is routed through a circuit breaker to prevent the possibility of overloading the branch circuit in the
event of both heating elements activate at the same time.
Recycling information:
Electrical and electronic equipment (EEE) contains materials, components and substances that may be hazardous
and present a risk to human health and the environment when waste electrical and electronic equipment (WEEE)
is not handled correctly.
Equipment marked with the below crossed-out wheeled bin is electrical and electronic equipment. The crossed-
out wheeled bin symbol indicates that waste electrical and electronic equipment should not be discarded
together with unseparated household waste, but must be collected separately.
For this purpose all local authorities have established collection schemes under which residents can dispose waste
electrical and electronic equipment at a recycling centre or other collection points, or WEEE will be collected
directly from households. More detailed information is available from the technical administration of the
relevant local authority.of waste electrical and electronic equipment and to increase opportunities for reuse,
recycling and recovery of waste electrical and electronic equipment.
NOTICE
Safety Information (continued)

Coffee Brewers Grindmaster®5
Foreword
The installation, use, and maintenance manual (hereinafter Manual) provides the user with information necessary
for correct and safe use of the machine (hereinafter “machine” or “appliance”).
The following must not be considered a long and exacting list of warnings, but rather a set of instructions suitable
for improving machine performance in every respect and, above all, preventing injury to persons and animals and
damage to property due to improper operating procedures.
All persons involved in machine transport, installation, commissioning, use and maintenance, repair and
disassembly must consult and carefully read this manual before carrying out the various operations, in order to
avoid wrong and improper actions that could compromise the machine's integrity or endanger people. Make sure
to periodically inform the user regarding the safety regulations. It is also important to instruct and update
personnel authorized to operate on the machine, regarding its use and maintenance.
Manual
The manual must be available to operators and carefully kept in the place where the machine is used, so that it
is always at hand for consultation in case of doubts or whenever required.
The manual must be carefully kept for the entire life of the machine, until scrapping.
The manual must stay with the machine in case of transfer, sale, hire, granting of use or leasing.
This manual is intended for:
• the carrier and handling personnel;
• installation and commissioning personnel;
• the employer of machine users and the workplace manager;
• operators for normal machine use;
• specialized technicians - after-sales service.
If, after reading this manual, there are still doubts regarding machine use, do not hesitate to contact the
Manufacturer or the authorized Service Center to receive prompt and precise assistance for better operation and
maximum efficiency of the machine. During all stages of machine use, always respect the current regulations on
safety, work hygiene and environmental protection. It is the user's responsibility to make sure the machine is
started and operated only in optimum conditions of safety for people, animals and property.
The manufacturer declines any liability for operations carried out on the appliance without respecting the
instructions given in this manual.
Copyright
No part of this manual may be reproduced. This manual is intended solely for consultation by the operator and
can only be given to third parties with the permission of manufacturer.
Rating / data plate
When installing the appliance, make sure the electrical connection is carried out in compliance with that specified
on the data plate (rating plate) on back of machine. Do not remove, tamper with, or make the machine's marking
illegible. Refer to the data given on the machine's marking for relations with the Manufacturer (e.g. when
ordering spare parts, etc.). When scrapping the machine, the marking must be destroyed.
Responsibility / Liability
The Manufacturer declines any liability for damage and malfunctioning caused by:
• non-compliance with the instructions contained in this manual;
• repairs not carried out in a workmanlike fashion, and replacements with parts different from those specified in
the spare parts catalogue (the fitting and use of non-original spare parts and accessories can negatively affect
machine operation and invalidates the warranty);
• operations by non-specialized technicians;
• unauthorized modifications or operations;
• inadequate maintenance;
• improper machine use;
• unforeseeable extraordinary events;
• use of the machine by uninformed and untrained personnel;
• non-application of the current provisions in the country of use, concerning safety, hygiene and health in the
workplace.
The Manufacturer declines any liability for damage caused by arbitrary modifications and conversions carried out
by the user or the Customer.
Additional Notices

6 Grindmaster®Coffee Brewers
The employer, workplace manager or service technician are responsible for identifying and choosing adequate
and suitable personal protection equipment to be worn by operators, in compliance with regulations in force in
the country of use.
Manufacturer declines any liability for inaccuracies contained in the manual, if due to printing or translation
errors.
Any supplements to the installation, use and maintenance manual the Customer receives from the Manufacturer
will form an integral part of the manual and therefore must be kept together with it.
Reasonably foreseeable improper use
Improper use is any use different from that specified in this manual. During machine operation, other types of
work or activities deemed improper and that in general can involve risks for the safety of operators and damage
to the appliance are not allowed.
Reasonably foreseeable improper use includes:
• lack of machine maintenance, cleaning and periodical checks;
• structural changes;
• tampering with the guards or safety devices;
• wrong machine installation;
• placing in the machine any substance other than water;
• non-compliance with the requirements for correct machine use;
• other actions that give rise to risks not eliminable by the Manufacturer.
ATTENTION The previously described actions are prohibited!
Residual risks
The machine has several risks that were not completely eliminated from a design standpoint or with the
installation of adequate protection devices. Nevertheless, through this manual the Manufacturer has taken steps
to inform operators of such risks. For the Customer's complete information, the residual risks remaining on the
machine are indicated below: such actions are deemed improper and therefore strictly forbidden.
Residual risk Description of hazardous situation
Electrocution Contact with live parts during maintenance operations carried out
Additional Notices (cont.)
Operator requirements
Characteristics of personnel trained for normal machine use.
The Customer must make sure the personnel for normal machine use are adequately trained and skilled in their
duties, as well as ensuring their own safety and that of other persons. The Customer must make sure his personnel
have understood the instructions received and in particular those regarding work hygiene and safety in use of
the machine.
Characteristics of personnel enabled to operate on the machine
The Customer is responsible for ensuring that persons assigned to the various duties:
• read and understand the manual;
• receive adequate training and instruction for their duties in order to perform them safely;
• receive specific training for correct machine use.
Operator qualified for normal machine use
He must have at least:
• knowledge of the technology and specific experience in operating the machine;
• adequate general basic education and technical knowledge for reading and understanding the contents of the
manual;
• including correct interpretation of the drawings, signs and pictograms;
• sufficient technical knowledge for safely performing his duties as specified in the manual;
• knowledge of the regulations on work hygiene and safety.
In case of a significant anomaly (e.g. short circuits, wires coming out of the terminal block, motor breakdowns,
worn electrical cable sheathing, etc.) the operator for normal machine use must:
• immediately unplug unit.

Coffee Brewers Grindmaster®7
Installation
Model Description
PBC-1A2 Coffee brewer, single virtual sightglass, air heated shuttle
PBC-2A2 Coffee brewer, double virtual sightglass, air heated shuttle
PBC-1W2 Coffee brewer, single sightglass, warmer shuttle
PBC-2W2 Coffee brewer, double sightglass, warmer shuttle
PBC-1V2 Coffee brewer, single, vacuum shuttle without stand
PBC-2V2 Coffee brewer, double vacuum shuttle without stand
PBC-1VS2 Coffee brewer, single vacuum shuttle with stand
PBC-2VS2 Coffee brewer, double vacuum shuttle with stand
Model Acronym Key
PBC = PrecisionBrew™ Coffee -1 = One brew head A = Air heated shuttle 2 = 230 volt
-2 = Two brew heads W = Warmer heated shuttle
V = Vacuum server w/o stand
VS = Vacuum server with stand
RAS = Remote Air warmer stand 2 = 230 volt
RWS = Remote warmer stand
Unpacking Instructions
Carefully unpack the machine and inspect immediately
for shipping damage. The packaging may contain un-
attached parts. Your machine was shipped in a carton
designed to give it maximum protection in normal
handling. It was thoroughly inspected before leaving
the factory. In case of damage, contact the shipper.
NOTICE: The person installing this appliance is
responsible for ensuring that electric and water
connections meet the requirements of the national
electric code, national plumbing code, and any local
ordinances.
The electrical input connections can be made from
either the bottom conduit hole or the back panel
conduit hole. Plug the unused hole with the hole plug
provided.
The water connection is on the back of the machine.
Mechanical Installation
NOTICE: This brewer should be installed by a
knowledgeable and experienced commercial
equipment installer.
1. Inspect unit to see if any damage occurred in
shipment.
2. Remove the brewer from the packing material and
attach its legs.
3. Position the brewer on a strong, stable, and level,
table or counter, at least 5 cm away from walls or
other appliances.For safe operation the appliance
must be placed on a stable horizontal surface in a
vertical position.
4. With bubble level, check to see that the brewer is
level on countertop. Check the level front to back
and side to side. Adjust the legs to the correct level.
Water Filtration.
Installing a scale inhibiting water filter at the time of
installing your new beverage machine will both
improve the quality of your beverage and extend the
life of your new beverage machine.
Before connecting your machine to a clean potable
water supply, your installing engineer or water
treatment professional should test the water for
Calcium, Chlorine, Mineral etc. to determine which type
of water filtration is suitable for your machine and the
volume of water you may use.
Your warranty does not cover –
• Misuse or abuse of the equipment
• Breakdown of the equipment due to scale or a
scale related cause.
• Poor water quality
• Poor, fluctuating or unsuitable water pressure
Water Hook-up
NOTICE: This equipment must be installed in
compliance with applicable Federal, State and/or Local
plumbing codes having jurisdiction. This product
requires an approved backflow prevention water
device, such as a double check valve, to be
installed between the machine and the water
supply. Use new hose-sets. Do not reuse old hose-sets.
Note: To prevent excessive pressure drop through
water line, use the shortest length water line which will
allow for moving the machine on the counter for
servicing operations. Excessive length of water line will
reduce the flow of water to the machine.
1. The water line enters on the rear of the brewer. Use
the right hand opening for water.

2. Use copper or flexible water line to prevent strain.
Do not use low temperature plastic tubing. The
connection to the fill valve is 3/4" BSP.
3. Prior to installing the brewer, flush out the water
line by running approximately 4L of water into a
pail. This will ensure no sediment from a new
installation can get in the brewer.
4. Water line pressure must be from 30 to 80 psi (207-
552 kPa).
5. Hot (up to 140°F / 60°C) or cold water may be used.
Hot water offers faster recovery between brews.
6. Make sure brewer is unplugged. Connect the water
line to the brewer with the hose connector.
7. Install a shut-off valve near the brewer.
8. Installing a filtering system can improve the taste of
brewed coffee and extend the life of the brewer. If
your water has high calcium (lime), chlorine, or iron
content, this is especially important. The filter
should be the lime inhibiting type if cold water is
used. Contact your local water treatment
professional regarding the type of filter you should
use based on water quality and volume of water
used.
Electrical Hook-up and Start-up Procedure
NOTICE: This equipment must be installed in
compliance with applicable Federal, State and/or Local
electrical codes having jurisdiction. Do not use
extension cords. Make sure that the outlet the brewer
plugs into is grounded.
NOTICE: Lower tank temperature for higher
altitudes. Water boils at lower temperatures as
elevation increases. See Adjustments.
The brewer is designed to operate at the specified
voltage on the nameplate. If the voltage is too low, the
solenoid valves may or may not work or longer recovery
time will be experienced. The brewer may be
permanently damaged if the voltage is too high.
1. The electric ratings for your brewer are printed on
its nameplate.
2. The brewer should be connected to its own circuit
with a fused disconnect switch or a circuit breaker
near the brewer.
Important: Means shall be provided to ensure all pole
disconnection from the supply. Such means shall be one
of the following: a supply cord fitted with plug, or a
switch that is directly connected to the supply terminals
and has a contact separation of at least 3mm in each
pole.
3. The brewer is supplied with a power cord for the
specified power supply receptacle.
4. Use only recommended replacement cord in the
event of damage to the supplied cord.
5. The cord must be plugged into a receptacle which
is rated for the plug supplied.
NOTICE: Double brewers only are provided with
dual independent heating tanks. The L1 leg of single
phase double brewers is routed through a circuit
breaker to prevent the possibility of overloading the
branch circuit in the event of both heating elements
activate at the same time.
The universal power supply provides 24vdc to all control
components (solenoids, lights, valves, motors, etc.).
The chassis must be grounded. A ground connection is
provided next to the terminal block.
Start up
1. Flip power supply to machine “ON” at the branch
supply disconnect. Then flip power switch located
on the back of the machine to the "ON" position
and allow the water tank to fill. The display on the
front should illuminate and machine may make a
subtle hissing sound while filling.
Note: A watchdog circuit monitors the fill valve “ON”
time. If the “ON” time exceeds 3.5 minutes
continuously, the brewer will display message “ER1”
and cease operation. Normal initial fill time on some
models exceeds 3.5 minutes. Turn off power to brewer
and turn back on; this will reset the controller and allow
brewer to complete filling.
2. Once the brewer is full, it will take 15 to 45 minutes
to heat, depending on input voltage, starting water
temperature, and number of brew heads.
3. Insert the brew basket(s) and place a shuttle under
8 Grindmaster®Coffee Brewers
Installation (continued)
WARNING: ELECTRIC SHOCK HAZARD!
Installation of this appliance should be performed by
authorized service personnel only. Improper
installation could result in electrocution.
WARNING: ELECTROCUTION HAZARD!
This appliance is IP20 rated, and shall not be cleaned
with pressurized water.
WARNING: ELECTROCUTION HAZARD!
Never use the ground conductor as a neutral. This
could cause electrocution.
WARNING: ELECTRIC SHOCK HAZARD
This machine is equipped with a power switch on the
back of the machine which disconnects the low
voltage power supply circuits only. Heating circuits are
always powered on when the branch circuit is on.
Disconnect power at branch circuit before
servicing.

Coffee Brewers Grindmaster®9
the basket(s). Brew at least one batch from each
side. Check the level in the container to be sure the
brew volume is correct. Remember that when using
coffee, the level will be lower. Do this for all batch
sizes. The water must be hot to check the levels. If
adjustments are needed, see the Adjustments
section of this manual.
Operation
1. Insert a 14" X 6" Grindmaster coffee filter into the
brew basket.
2. Pour the proper amount of fresh coffee grounds
into the brew basket and level by gently shaking.
Slide the brew basket into the brew basket rails and
select batch size. Follow corporate
recommendations for amount of coffee and grind.
A full shuttle is 1.5 gallons (5.7L). A full vacuum
shuttle is 1.6 gallons (6.0L).
3. Place an empty server under the brew basket. Turn
on the warmer if available. If the shuttle is not
warm, allow the warmer to heat the shuttle. A short
brew of only water will speed this. A cold shuttle
will significantly lower the temperature of the
brewed coffee.
4. The brewer will only brew if the minimum brew
temperature setting has been reached. See "water
temp" icon in the tools setting and adjust minimum
temperature setting as desired. Note: tank
temperature is sensed at the bottom of the hot
water tank so there is usually a reserve of hot water
available for proper brewing after initial heatup.
5. Brewer will not brew when:
a) BREW TEMPERATURE TOO LOW - wait until
tank is heated to temperature setpoint.
Note: each brew head has its own heating
tank which is controlled independently. On
double head brewers, the right side tank
receives preference to full power heating;
followed by the left side tank.
b) BREW BASKET NOT DETECTED.
c) BREW BASKET HAS NOT BEEN REMOVED
SINCE LAST BREW - remove basket, empty
previously brewed grounds and grind a new
batch into brew basket.
d) SERVER NOT IN PLACE - place appropriate
Server in place under brew basket until
presence switch is activated.
6. Press the brew arrow on the LCD display for the
appropriate brew head and the LCD display will
lead you through the above steps to initiate the
brew sequence.
7. During the brew cycle, a countdown timer will
indicate the remaining time left for the brew cycle.
Following the BREW cycle will be a countdown of
DRIPPING time which shows the time remaining
until the brew basket lock will release. Discard the
grounds and filter only after visible dripping stops
and the basket lock plunger has released. Always
use caution when removing the brew basket to
prevent potential splashing of hot water which
could be trapped from a clogged brew basket
outlet.
8. The shuttle may be placed on remote warming
stations. Use caution when moving a full shuttle.
CAUTION: HOT LIQUID HAZARD
Do not transport brewer without draining water
tank(s) first.
Start up (continued)
CAUTION: HOT LIQUID HAZARD
Water used for brewing coffee is very hot. Use
caution when brewing, pouring, or transporting
coffee. Accidental spills may result in severe burns.
CAUTION: HOT LIQUID HAZARD
Always confirm that the coffee grind profile and Brew
Selection settings allow for safe operation without
overflowing the brew basket and allow for safe
draining of the brew basket after the end of the brew
cycle.
CAUTION: HOT LIQUID HAZARD
Brew basket contains very hot water until the drip is
completed. Early removal of a dripping basket could
result in burns.
CAUTION: HOT LIQUID HAZARD
Verify shuttle cover is in the locked or closed position
before moving.

10 Grindmaster®Coffee Brewers
Adjustments
All adjustments to machine are accessible through the front display. Refer to specifics below and the Programming
Routine section. All values are preset at the factory and may vary brewer to brewer.
Temperature Adjustment
Tank temperature can be adjusted from 170°F – 205°F (77°C – 96°C) through the front display. See Programming
section for procedure.
This brewer can be set for maximum water temperature of 205°F (96°C). The boiling point of water is lower as
altitude increases. The setpoint temperature of the brewer should be maintained below the boiling point at a
given elevation. Refer to the chart below for recommended maximum setpoint for given altitudes.
WARNING: ELECTRIC SHOCK HAZARD! Dangerous electric voltages are present near adjustable
components. All adjustments should be performed by qualified service personnel only.
Altitude Approximate Boiling Point Recommended Max. Temperature
(ft) (m) °F °C °F °C
00212 100 205 96.1
500 152 211.1 99.5 204 95.6
1000 305 210.2 99.0 203 95.0
1500 457 209.3 98.5 202 94.4
2000 610 208.4 98.0 201 93.9
2500 762 207.5 97.5 200 93.3
3000 914 206.6 97.0 199 92.8
3500 1067 205.7 96.5 199 92.8
4000 1219 204.8 96.0 198 92.2
4500 1372 203.9 95.5 197 91.7
5000 1524 203 95.0 196 91.1
5500 1676 202 94.4 195 90.6
6000 1829 201.1 93.9 194 90.0
6500 1981 200.2 93.4 193 89.4
7000 2134 199.3 92.9 192 88.9
7500 2286 198.3 92.4 191 88.3
Control Features
Pre-infusion: Controls the initial coffee grounds wetting and the first dwell time after the initial wetting. Pulse
brews are the series of pulses after the Pre-infusion process.
Brew Countdown Timer: After the start of a brew the LCD display will countdown the remaining time left in
the brew process. The countdown will include all OFF periods programmed in the Pre-infusion and the pulses.
Energy Savings Mode: If enabled, when the brewer is idle for a selectable time of 1-12 hours, this feature will
allow the water tank to lower its holding temperature to 60°C (140°F). The display will scroll through background
images while in this mode. To exit energy savings mode, press the display and the unit will start reheating to
brewing temperature.

Coffee Brewers Grindmaster®11
Default brewing interface passcode is 1234.
Default service menu passcode is 4003.
USB programing is one of the ways a user can change
the default recipes. After the recipes are updated using
the touch screen user interface, the programs can be
uploaded to a USB (Universal Serial Bus) drive by means
of the USB port on the front top of the brewer above
the center of the screen. The uploaded USB drive then
can be used to transfer the recipes and setting to other
machines reducing the setup time of future unit. The
USB transfer ability allows for standardized programs
between locations and simplifies service technician’s
work.
The USB drive must have a type-A connection, have USB
2.0 capability, and a minimal 2 GB of storage space.
SOFTWARE INFORMATION TRANSFER:
To upload or download settings, recipes, or images:
Select USB icon in the LCD display.
Default passcode & passcode setup: Select Passcode icon
under Settings on LCD display.
Programming
Backlighting Lighting Color sequences:
If freshness timer setting is “ON”:
•Solid Green backlighting: After brewing;
30-5 minutes remaining in the freshness
timer
•Solid Yellow backlighting: 5 to 0 minutes
remaining in the freshness timer
•Solid Red backlighting: Freshness timer
elapsed
If freshness timer setting is “OFF”:
Backlighting randomly cycles colors as long
a
the shuttle is on the brewer
Error states:
Flashing Blue: Fan not spinning
Flashing Red: Air heater over-temp
Flashing Green: Air temperature thermistor out of
range
Air-Heated Shuttle Lighting

12 Grindmaster®Coffee Brewers
Programming (continued)
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Coffee Brewers Grindmaster®13
Cleaning
NOTICE: All sanitizing agents in the food zone must
comply with US Food and Drug Administration
regulation 21 CFR 178.1010 “Sanitizing Solutions” and
US Environmental Protection Agency 40 CFR 18.940
“Tolerance exemptions for active and inert ingredients
for use in antimicrobial formulations (Food-contact
surface sanitizing solutions)”. Sanitize all food
dispensing units periodically. All parts to be sanitized
must be cleaned first. Cleaning and sanitizing frequency
must follow state and local health department
regulations.
After Each Brew:
1. Dispose of grounds and rinse brew basket.
2. Rinse shuttles with hot water and empty
completely.
3. Fill shuttles with hot water.
4. Open shuttles and empty contents completely by
opening the faucet.
Every Day:
1. Wash brew basket with warm soapy water. The wire
basket is removable to aid cleaning.
2. Remove spray head(s) located above brew basket(s),
using gloves or a heavy towel. Wash off coffee oils
and clean any plugged holes.
3. Clean shuttles with warm soapy water and a soft
towel.
4. Wipe exterior of brewer with a damp cloth. Do not
use abrasives which will scratch surface.
6. If shuttles are to be left on the warmer all night, fill
with water to avoid coffee oil burn-in.
Weekly or Bi-Weekly, Depending on Use:
1. Fill shuttles with 4 liters, 2/3 full, of hot water.
2. Pour the recommended concentration of urn
cleaner into the shuttle liners (Excessive amounts of
cleaner will attack the stainless steel).
3. Gently wipe the plastic liner with a soft cloth soaked
in urn cleaner to remove coffee residues. Do not use
anything which will scratch the plastic shuttle liner.
A good urn cleaner such as “Urn Clean” will remove
coffee oils and mineral deposits from both plastic
and stainless steel without harsh scrubbing.
4. Remove the knurled nut at the top of the gauge
glass and clean the glass with a small bottle brush.
5. Pour out the contents of the shuttle.
6. Remove the handle assembly of the shuttle faucet
by unscrewing the plastic bonnet nut.
7. Gently wash the faucet seat cup with a soft cloth
and warm soapy water.
8. Wash the faucet shank with a bottle brush.
9. Clean the warmer and bottom of shuttle surfaces.
These surfaces must be clean for proper heat
transfer.
10. Polish the exterior of the brewer with stainless steel
cleaner. Use the appropriate cleaner for brass,
copper, or vinyl if these optional finishes are
provided.
Cleaning and Sanitizing Vacuum Shuttle and
Stand:
1. Cleaning and sanitizing lid assembly:
a) Remove lid from unit, fully submerse it in
cleaning solution. Using a clean cloth, wipe the unit
thoroughly.
b) Using supplied brush, clean mixing tube
thoroughly.
c) Rinse with clean water.
d) Submerse in sanitizing solution for 5 minutes
then air dry completely.
2. Cleaning and sanitizing body assembly:
a) Remove unit from the base. (Only when using
shuttle with attached base.)
b) Completely fill the unit with cleaning solution.
Using a clean cloth, wipe the unit thoroughly.
c) Rinse unit thoroughly with fresh water.
d) Remove faucet, shank, and sight gauge from
unit and place in cleaning solution.
e) Open lid on the bottom of the unit and remove
silicone tube (tank to faucet tube) and place in
cleaning solution for cleaning.
f) Reassemble unit.
g) Fully fill unit with sanitizing solution for 5
minutes and drain through fully opened faucet.
h) Wipe outside of the unit with a clean cloth
moistened with sanitizing solution.
i) Place unit on rack upside down to thoroughly
air-dry.
3. Cleaning stand assembly and tray:
a) Remove tray and tray top and place in cleaning
solution. Using a clean cloth, clean tray and tray top
thoroughly.
b) Wipe outside of the stand with a clean cloth
moistened with sanitizing solution.
c) Place parts on rack to thoroughly air-dry.
4. Cleaning the faucet assembly and silicone tube:
a) Using supplied brush, clean silicone tube, sight
gauge tube, and shank assembly.
b) Rinse parts and place in sanitizing solution for
5 minutes, remove, and air dry.
c) Remove top from faucet and use brush to clean
inside, rinse, and place in sanitizing solution for 5
minutes.
d) Remove and air dry.
5. When all pieces are completely dry reassemble for
use.
CAUTION: BURN HAZARD
Hot liquids and surfaces are present in this
equipment. To avoid burns, use caution when
cleaning. Rinse hot parts with cold water before
cleaning. Use gloves or a heavy cloth when removing
hot parts from brewer.

14 Grindmaster®Coffee Brewers
Maintenance
To Drain the Water Tank
NOTICE: Always empty tank(s) before shipping.
NOTE: Brewer may contain over 6 gallons (23L) of hot
water.
1. Prepare a heat resistant container to drain tank
water into.
2. Disconnect power to brewer.
3. Remove the front access panel.
4. Pinch or clamp the silicone drain hose and remove
hose plug.
5. Place hose over drain and release clamp.
6. Allow the tank to drain completely.
NOTE: It may be necessary to pinch the hose and stop
the water before container is full. Carefully reinstall
hose plug, then empty container. Repeat steps 4-6
completely to drain tank.
Remove Brew Valve
Remove Brew or Bypass valve (Note: the dispense valves
incorporate a ¼ turn bayonet style mounting; use care
when handling):
1. Disconnect power to machine.
2. Using an appropriate vessel to hold hot water,
safely drain the water tank to a level below the
solenoid level by operating the manual hot water
tap until the water tap does not flow. This will be
the indication that the tank is drained below the
level of the solenoid valves.
3. Remove top cover.
4. Gently disconnect the electrical leads from the valve
coil.
5. Gently remove the Silicone rubber tube from the
valve inlet.
6. Gently twist the valve clockwise ¼ turn and remove
the valve.
To Remove the Heater
1. Disconnect power and remove top cover of brewer.
2. Disconnect wire leads to heater, thermistor, level
probe, and ground wires.
3. Remove tank cover by loosening retaining nuts.
Cover is lifted up with heater attached. Heater is
then removed.
4. Replace heater with sealing washers in same
configuration. When tightening nuts, hold element
so it does not twist.
5. Replace tank cover, ensuring O-ring seal is good.
6. Replace heater wires. Be sure all electrical
connections are secure. Ensure silicone rubber
insulator sleeves are re-positioned to protect the
heater terminals.
7. Replace top cover of brewer and connect power
cord to outlet.
Removing water inlet valve:
1. Turn off water supply to inlet valve.
2. Disconnect swivel fitting from inlet valve.
3. Remove front splash panel.
4. Using an appropriate container, drain the hot water
tank completely.
5. Disconnect wires from inlet valve.
6. Remove hose clamp from silicone rubber tube at
the inlet valve.
7. Remove silicone rubber tube from valve.
8. Remove (2) valve retaining screws.
9. Remove valve.
10. Installation is reverse order; Note: ensure hose
clamp is properly replaced to prevent the possibility
of the silicone rubber hose blowing off during a fill
sequence.
Freezing
Do not expose this unit to freezing conditions. If
freezing conditions are forecasted, disconnect power to
the unit and contact a service technician to drain the
tank(s) prior to freezing.
If unit has been exposed to freezing conditions, contact
a service technician. The technician must bring the unit
to above-freezing temperature, and drain tank.
Remove the tank lid and visibly verify that the tank is
free of ice, doesn’t bulge, and isn’t otherwise deformed.
Replace tank lid and reassemble the unit. Plug in unit
and allow tank to fill and heat. Verify tank does not
leak and normal operation.
WARNING: ELECTRICAL AND BURN
HAZARD
Dangerous voltages and hot surfaces are present
inside the machine. Maintenance should only be
performed by qualified service personnel.
CAUTION: BURN HAZARD
Water in tank is very hot. Draining of tank should be
performed by a qualified service technician. Use
caution when draining tank. Accidental spills may
result in severe burns.

Coffee Brewers Grindmaster®15
Special Control Functions
Reset factory defaults:
Select Tools / More / More / Defaults buttons on LCD display
Control schematic
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WARNING: ELECTRICAL AND BURN HAZARD
Dangerous voltages and hot surfaces are present inside the machine. Maintenance should only be performed
by qualified service personnel.
Models with Jumpers included in harness343-00195 Jumper configuration schematic
Note: All Coffee brewers require configuration jumpers applied as shown. Configuration jumpers are provided
from the factory either built into the main wiring harness, or as separate jumpers (p/n 343-00195) depending on
the model. Ensure these jumpers are replaced if a control board is replaced. If jumpers are not replaced, the
machine will default to “Tea brewer” functionality.

16 Grindmaster®Coffee Brewers
Troubleshooting Guide
The following pages are provided to help determine the cause of problems with operation of the brewers and to
indicate the appropriate solution for the problems. For each problem, the possible causes should be checked in
the order shown until the exact nature of the problem is determined.
The following procedures must be performed by a qualified service technician. Disconnect power to
machine before servicing.
Before you call for help, please read the following:
WARNING: To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.
Error Messages
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Display does not • Branch circuit is •Check branch circuit •Turn on power at branch
illuminate disconnected circuit
•Power switch on back •Check power switch •Flip power switch up to
of machine is in OFF the ON position
position
•Control circuit breaker •Check circuit breaker •Press plunger on circuit
has tripped breaker located next to
the power switch on the
back of the unit
•Universal power supply •Check universal Replace power supply if
is faulty power supply input needed
and output voltage
Input voltage should
read AC line voltage
DC output should
read 24vdc
•Power supply •Check power supply •Ensure connections are
connections are connections made at both the power
disconnected supply and the controller
input
•Control to LCD display •Check ribbon cable •** Re-seat ribbon cable
ribbon cable connections to both connections as shown
connection is faulty display and control on page 18. (note: ribbon
board cable provides all power
and communication to
display)
•Faulty display •Perform all other •Replace display only if all
checks first other checks do not
resolve the issue

Coffee Brewers Grindmaster®17
Troubleshooting Guide (continued)
Brewing problems
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Display shows Tea • Coffee configuration •Check for •Refer to page 11 sketch
images jumpers are not on configuration for information
control jumpers
LCD display indicates • Brew basket is rotated •Check brew basket •Brew basket must be
“no brew basket to left or right instead orientation installed straight to allow
detected” when basket of straight in brew basket detection
is installed circuit to operate
Water distribution • Magnetic spray head is •Remove brew basket •Replace spray head if
over coffee bed is not missing and observe if spray missing
uniform head is intact
•Spray head is dirty or •Remove magnetic •Clean or delime the spray
has mineral buildup spray head and check head and replace
for clogged spray
pattern holes
Filling / water leakage problems
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Water dripping from • Weeping water inlet •Check for water •Replace valve (non-
spray head when valve weeping from serviceable item)
power is off overflow opening on
spray dome (not
brew valve)
•Weeping brew or •Observe for leakage •Remove brew basket and
bypass valves at dispense valves spray head and look for
water weeping from
brew valve outlets on
bottom of spray dome
replace valves if needed
•Residual water in spray •Check spray head for •Clean spray head to
head clogging remove any coffee or
lime buildup which may
restrict the spray head
Overfilling water tank • Water level probe is •Check level probe •Carefully remove level
only when power is on coated with lime probe from retaining
grommet and remove
any deposits
•Level probe electrical •Check level probe •Ensure level probe
connection is faulty connections connections are good at
the level probe, tank
ground, and control
board connections
WARNING: To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.

18 Grindmaster®Coffee Brewers
Troubleshooting Guide (continued)
Filling / water leakage problems (continued)
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Water tank does not • Power is not supplied •Check power •Ensure the branch circuit
refill to the machine connections is on, the power switch
on the back of the
machine is on, and the
circuit breaker next to
the power switch is not
tripped
•Water supply is turned •Verify water supply is •Check water supply to
off to machine on and active machine is turned on if
necessary, verify that
water supply is actually
on by removing the
water inlet connection to
verify flow
•Faulty fill valve •Check if fill valve •Replace valve if valve is
electrical input is ok receiving 24vdc input
•Check electrical •Correct electrical
connections at both connections
fill valve and control
board
Heating problems
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Water tank does not • Heater circuit breaker Reset circuit breaker on
heat but display has tripped back of machine by
indicates “heating” pressing plunger
•Solid state relay •Check Relay •Ensure Solid State Relay
connections are faulty connections connections are good at
control and relay located
on bottom of tank
(Confirm Polarity is correct)
•Solid state relay is •Check DC input •Replace the SSR if the
faulty voltage input and line SSR DC input voltage is
voltage output at 3.3 volts and the SSR
SSR. Note that SSR output voltage is
has a LED indicator receiving line voltage
which illuminates
when the SSR
receives a signal to
turn the heater on
WARNING: To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.

Coffee Brewers Grindmaster®19
Troubleshooting Guide (continued)
Heating problems (continued)
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Water tank does not • Solid state relay is not •Check to ensure SSR •Tighten retaining screw
heat but display secured to bottom of is secured to bottom snug but not over-
indicates “heating” tank properly of tank properly for tightened
(continued) proper heat sinking
to the tank
•Tank water level is too •Check if water level •Resolve water level
low which is disabling circuit is functioning circuit issue if machine is
heating circuit properly by not refilling properly
dispensing water
from the hot water
tap into an
appropriate
container
•Faulty heating element •Check for voltage •Replace heating element
across heating if needed
element
•Hi-limit temperature •Press reset button on •Tripping of the hi-limit
switch has tripped hi-limit switch switch indicates a fault
located on top of the condition. Monitor
hot water tank machine to determine
root cause of tripping of
the hi-limit switch
•Control board •Reset power to •If resetting power
watchdog timer has machine by powering resolves the issue,
tripped to protect the down from power monitor machine to
machine from filling or switch on back of determine root cause.
heating errors machine Intermittent loss of
water supply (i.e. facility
maintenance) can cause
nuisance tripping of the
watchdog timer
•Heater terminal screws •Check heater •Tighten screws while
are loose terminal screws for supporting screw tab to
tightness prevent torqueing of the
heater cold pin to
prevent damage to the
heater
•Faulty control board •Perform all other •Replace control board
checks only if all other checks
are determined OK
WARNING: To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.

20 Grindmaster®Coffee Brewers
Troubleshooting Guide (continued)
Heating problems (continued)
PROBLEM POSSIBLE CAUSE SERVICE CHECK SOLUTION
Water tank boils • Water temperature set •Determine operating •To prevent boiling, adjust
intermittently (steam point is too high for the elevation and water tank temperature
exits brew basket operating elevation compare to the chart at least 3 degrees below
during heating) below the boiling temperature
for the operating
elevation (see
programming section for
adjustment details)
Air heated shuttle is • Air heater is blocked • • Clean air heater and
backlit but air heater is with debris outlet air opening for reset hi-limit thermostat
not heating signs of debris
blocking airflow
•Air heater fan is faulty •Inspect fan for proper •Replace fan if needed
or blocked operation. Observe
LCD display for fan
failure indication
Brew volume too large • Coffee bed absorbs •Account for coffee bed
or too small brew volume which absorption in dispensed
results in less volume brew volume
than actual
programmed brew
volume
•Portion size on •Review programmed •Adjust settings to desired
touchpad was not time settings for the values
selected correctly desired brew volume
•Total dispensed brew •Check total brew •Reduce volume setting
volume setting is too volume setting in and confirm the setting is
high programming for the saved to memory
specific recipe which
is considered too
high
•Spray head is clogged •Visually inspect the •Clean if needed
spray head for coffee
residue or lime
buildup
•Brew valves are clogged •Visually inspect brew •Replace or clean valve if
with lime deposits valves for signs of needed
debris
WARNING: To reduce the risk of electrical shock, unplug the power cord before repairing or replacing
any internal components of the unit. Before any attempt to replace a component, be sure to check all electrical
connections for proper contact. Only a qualified service technician should perform electrical and mechanical
adjustments or repairs.