Grindmaster Grind'n Brew-10H Operation and Mode d’emploi

Warning Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Water Hook-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Electrical Hook-up & Start-up Procedure . . . . . . . . .6

Operating the Touchpad . . . . . . . . . . . . . . . . . . . . .6

Brewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

User Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Bean Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

User Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Pulse Brew Cycle . . . . . . . . . . . . . . . . . . . . . . . . . .8

User Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Brew Volume Setting . . . . . . . . . . . . . . . . . . . . . . .10

System Restore Feature . . . . . . . . . . . . . . . . . . . .10

Factory/Field Test Menu . . . . . . . . . . . . . . . . . . . .11

Water System Errors . . . . . . . . . . . . . . . . . . . . . . .12

Timer Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Setting the Grind . . . . . . . . . . . . . . . . . . . . . . . . . .12

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Shear Plate Replacement . . . . . . . . . . . . . . . . . . .14

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . .15

Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . .22

Grindmaster Corporation

4003 Collins Lane

Louisville, KY 40245 USA

(502) 425-4776 (800) 695-4500

(800) 568-5715 (Technical Service Only)

FAX (502) 425-4664

www.grindmaster.com

PRINTED IN USA

Patents Pending

1008 Form # BW-350-14

Part #70661

Grind’n Brew Coffee Systems®

Operation and Instruction Manual

for

Models: -11, -21, -10, -20 including H, HQ versions

TABLE OF CONTENTS

Prior authorization must be obtained from

Grindmaster Corporation for all warranty claims.

Model Grind’n Brew-10H

Model Grind’n Brew-20H Model Grind’n Brew-21H

Model Grind’n Brew-11H

Grind’n Brew®Coffee Systems Page 3

Warning Labels

! WARNING:

USE ONLY ON A CIRCUIT THAT IS PROPERLY PROTECTED AND CAPABLE OF THE

RATED LOAD.

! WARNING:

ELECTRONICALLY GROUND THE CHASSIS.

! WARNING:

DO NOT DEFORM PLUG OR CORD.

! WARNING:

FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES.

! WARNING:

WATER CONNECTIONS SHALL COMPLY WITH THE PLUMBING CODE OF BOCA & THE

FOOD SERVICE SANITATION MANUAL OF THE FDA

! WARNING:

DO NOT USE NEAR COMBUSTIBLES.

! WARNING:

FAILURE TO COMPLY RISKS PERSONAL INJURY, DAMAGE TO EQUIPMENT, FIRE OR

SHOCK HAZARD.

! WARNING:

READ THE ENTIRE OPERATING MANUAL INCLUDING THE LIMIT OF WARRANTY AND

LIABILITY BEFORE BUYING OR USING THIS PRODUCT.

! WARNING:

ALWAYS UNPLUG UNIT FROM POWER SUPPLY BEFORE SERVICING.

Page 4 Grind’n Brew®Coffee Systems

1810 1810 208 3660

1710 1710 2674 3560 1810 1810 2749 3660

120 120 208/240 120 120 208/240 208/240208/240

1710 1710 2674 3560 1810 1810 2749 3660

120 120 208/240 120 120 208/240 208/240208/240

Technical Data - Single Bean Domestic Models

Technical Data - Dual Bean Domestic Models

Grind’n Brew®Coffee Systems Page 5

Unit Installation

IMPORTANT:This brewer should be installed by a knowledgeable and experienced commercial

equipment installer.

Brewer Contents

Your brewer package should include the following:

1 Grinderbrewer (either single or dual bean)

1 Operation and Instruction Manual (this manual)

1 Hose to 1/4" flare fitting (part # 61237)

Tools Required for Installation

#2 Phillips screwdriver

9/16" wrench

5/8" wrench

(or crescent wrench)

6" level

NOTE: Other tools may be needed depending on the type of water supply tubing and location.

1. Inspect unit to see if any damage occurred in shipment.

2. Position brewer on counter. Place on sturdy permanent counter top. If you have an airpot brewer, install the 4"

plastic legs (included) at the bottom of the brewer. Lean the brewer towards its side to expose screwholes under-

neath for legs. Adjust the leg height to suit the size of airpots you will use. IMPORTANT: Adjust the feet to

level the brewer. With bubble level, check to see that the brewer is level on countertop.

Water Hook-up (All Models) (Refer to Figure A)

IMPORTANT: This equipment must be installed in compliance with applicable Federal, State and/or

Local plumbing codes having jurisdiction. Incoming water pressure should be greater

than 20 psi and not more than 100 psi.

1. The incoming water supply should have a shut-off valve connected in-line. The end should have a female 1/4"

flare fitting. Water supply should be a 1/4" I.D. dedicated line branched off a 1" or larger supply line.

2. Prior to installing the brewer, flush out the water line by running approximately 1 gal. of water into a pail.

This will insure no sediment from a new installation can get in the brewer.

3. Make sure your source water is turned off. Connect the water line’s 1/4" female flare fitting (1) to the 1/4" male fit-

ting on the hose connector (2).

4. Make sure Grind’n Brew is unplugged. Connect the water line to the brewer with the hose connector (2).

5. Turn the water valve on, sending water to the brewer. If there are any leaks, tighten connections to stop leakage.

Figure A

Page 6 Grind’n Brew®Coffee Systems

Electrical Hook-up and Start-up Procedure (All Models)

IMPORTANT: Do not plug the unit in yet.

IMPORTANT: 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.

IMPORTANT: Make sure that the Main Power Switch in the back of the unit is in the Off position before

plugging in the brewer.

IMPORTANT: Domestic Q models at 208/230V must have a 4 wire electrical connection. The circuit must

have 2 hots, 1 ground and 1 neutral wire. Failure to install with a 4 wire connection will void

the manufacturer’s warranty. 208/230 Volt Grind’n Brew units require a 20 Amp circuit.

1. Plug the brewer into an electrical outlet (or run power to unit for hardwire applications).

2. Make sure the brew basket is inserted in the brew rails.

3. Reach to the back of the brewer and press the white Main Power Switch to the On position. The front control lights

will go on, and water will enter the brewer. The tank will fill in 2-3 minutes from the moment the Main Power Switch is

turned on.

4. Once the tank is full, it will take 10-15 minutes to heat the water to the brewing temperature. (Cut that time in half for

the 230V “Q” models.) Once the Ready light is lit, you are ready to brew.

IMPORTANT: Brewers are factory set for throw weight and water portion. Please check that installation

is correct before making adjustment. No adjustments should be necessary for normal

installation.

Operating the Touchpad (Refer to Figure B)

1. To select the appropriate bean hopper, press the hopper (left) button until the desired indicator arrow is illuminated.

NOTE: This step only applies to dual bean hoppers.

2. To select a portion size, press the center of the Portion Size (middle) button until the half pot or full pot symbol

(depending on your need) is illuminated.

3. The Mode (right) button allows you to select either the “Brew Only”, “Grind Only” or “Grind and Brew” feature.

a) To grind only, press the center of the Mode (right) button until the grinder symbol is illuminated.

b) To brew only, press the center of the Mode (right) button until the coffee cup symbol is illuminated.

c) To grind and brew, press the Mode (right) button until both symbols are illuminated together.

Figure B

(Dual Bean Model)

(Single Bean Model)

Half or Full PotBean Selector

(Dual Bean Models Only)

Grind only

Brew only

Grind and Brew Option

Grind’n Brew®Coffee Systems Page 7

Brewing

IMPORTANT: Brewers are factory set for the correct grind and brew times for average situations. You

should not need to make adjustments in the field.

1. Make sure that a new paper filter is in the brew basket and the brew basket is in place in the brewer.

2. Place beans in the hopper.

3. Choose to “Grind and Brew”. Press the far right touchpad so “Grind and Brew” lights are lit.

4. Choose the Portion Size. Press the middle touchpad until desired volume is lit.

5. Choose Decaf or Regular coffee (only applicable to dual bean Grind’n Brews). Press left touchpad.

Arrow will either point left or right for Decaf or Regular.

6. Place a decanter or airpot under the brew basket, depending on the model.

7. Press Start. You will see the coffee bean level go down slightly. You will hear the coffee grind. Coffee is automati-

cally ground, portioned and placed in brew basket. Then ground coffee is automatically brewed. The Ready light

will now blink, indicating that grinding and brewing are in progress. This will take 3-4 minutes for a 1/2 gal. pot.

Portions are factory set. A stop function is added to the start switch. When this switch is depressed, it allows the

unit to stop during the selected grind, brew or grind and brew functions.

After brewing a pot, the tank must reheat. Reheat time is 5 1/2 - 8 minutes for 120V brewers and half that time

for 230V machines. Remember that the brewer will not function (although the grinder will) until the Ready light is

on, indicating that the water is hot enough to brew. A flashing green light indicates that the brewer is reheating or

that there is a cycle in progress. Do not remove the brew basket while the light is flashing. The brew basket

must be removed before a new brew can be initiated. This feature ensures that the operator discards the old

coffee grounds and installs a new coffee filter.

User Lockout

User Lockout is achieved via the position of the LOCK jumper on the board header. Locate the header on the board

(shown below) and place the jumper in the desired position. In the Locked position all menus in this document are

locked out, and the unit will only allow brewing or grinding functions. There are two versions of the header, 10 pin

and 2 pin. Both configurations are shown below.

User Lockout Jumper

User

Lockout

Jumper

Locked

Unlocked

LOCK

2 Pin Version

1 LOCK

Locked

Unlocked

10 Pin Version

Page 8 Grind’n Brew®Coffee Systems

User Settings

The Grind’n Brew® has several factory-set options that can be modified by the user. These are divided into two

categories: Universal Settings or Brew Settings. Universal Settings pertain to the whole unit, and Brew Settings

pertain to one of the four available brew cycles – (Regular Full, Regular Half, Decaf Full and Decaf Half). All

settings are retained during a power loss. The original factory settings can be restored by using the System

Restore Function.

Universal Settings Brew Settings x 4

Temperature Scale Auger Time

Water Temperature Pulse Brew Pulses

Low Temp No Brew Enable Pulse Brew Pour Time

Pulse Brew Delay Time

Brew Time

User Settings

Pulse Brew Cycle

Pulse Brewing is a feature that increases the control and performance of the Grind’n Brew® machine. By pulsing

water during the brew cycle, you allow greater contact time and better extraction of the coffee. Ultimately you will

achieve a bolder and more consistent cup of coffee by using this feature.

If pulse brewing is selected, the unit will brew the number of pulses identified by the Pulse Brew Pulses setting.

Each pulse is identical. It will begin by dumping water for the Pulse Brew Pour Time and then wait for the Pulse

Brew Delay Time. This will repeat until all pulses are finished.

Once the pulses are complete, the unit will pour water for the remaining Brew Time. Brew Time is the total amount

of time water is poured over the coffee grinds. Pulse Brew Pour Times are included in this total. Pulse Brew

Delay Times are not included. The cycle will always stop pouring once the Brew Time is met, regardless of

whether this happens in the middle of pulse brewing.

Drip Time is half of the Brew Time. However, the Drip Time will never be greater than 1:30.

Bean Counter

The built-in bean counter measures relative usage of its Grind’n Brew® machine by totaling the amount of seconds

the augers have fed beans into the grinder. This number directly correlates to the amount of beans used by the

machine.

Depending on model, the bean counter is either always shown or hidden to the user.

The Bean Counter Menu is accessed by holding the UP and DOWN keys for 5 seconds. If the counter is normally

hidden, it will be shown here. The user can reset the counter through this menu. Pressing the SET button will

display “REs” and the user can select “YEs” or “no” with the UP and DOWN keys. Pressing the SET key finalizes

the selection. This menu times out after 10 seconds and is disabled by the User Lockout Jumper.

Grind’n Brew®Coffee Systems Page 9

User Menu

The User Menu is accessed by pressing the SET key on the display board. Navigation is accomplished by pressing

the UP, DOWN and SET keys. Feedback to the user is shown by the 3-digit numerical display.

The User Menu exits after a 1 minute timeout or all modes are stepped through. This menu is disabled by the User

Lockout Jumper.

Brew Settings - Brew Cycle Selection

There are four independent settings for brew cycles: Regular Full Brew, Regular Half Brew, Decaf Full Brew and

Decaf Half Brew. The User Menu adjusts settings for the brew cycle selected by the keypad. For instance, if

you want to change settings for Decaf Half brew then set the keypad to the Decaf Hopper and Half Brew Size

before entering the User Menu. The keypad settings cannot be changed while the User Menu is displayed.

User Menu Navigation

Advancing through the menu is done by pressing the SET Key. Each parameter is adjusted by pressing the UP

and DOWN keys. Pressing and holding the UP and DOWN keys will quickly scroll through settings. The table

below shows how to step through this menu.

Step Setting Display Adjustments

1Temperature Scale between

°F or °C

Displays the current

selection. Factory default

is “°F”

“°F” or “°C”

2Water Temperature

setpoint in °F or °C

Displays the current

selection. Factory default is

“195” in °F or “91” in °C.

“170” to “205” °F

“77” to “96” °C

3Show Auger Time

the amount of coffee beans fed

into the grinder

“At” None

4Set Auger Time

the amount of coffee beans fed

into the grinder

Displays the current

selection depending on Brew

Cycle

“0.1” to “45.0” seconds

5Show Brew Time

Total amount of pour time for

the brew cycle

“br” None

6Set Brew Time

Total amount of pour time for

the brew cycle

Displays the current

selection depending on Brew

Cycle

“0.01” to “6.00” in min-

utes.seconds

7Show Pulse Brew “P-b” None

8Pulse Brew Pulse Number

sets the number of pulses in

the brew cycle

Displays the current

selection depending on Brew

Cycle

“OFF” to “10”

9Pulse Brew Pour Time

sets the amount of pour time in

each pulse

Displays the current

selection depending on Brew

Cycle

“0.05” to “1.00” in

minutes.seconds

10 Pulse Brew Delay Time

sets the amount of delay time

between each pulse

Displays the current

selection depending on Brew

Cycle

“0.05” to “1.00” in min-

utes.seconds

11 Show Low Temp No Brew “Ltn” None

12 Set Low Temp No Brew

enable or disable

Displays the current

selection. Factory default

is “YES”

“OFF” or “ON”

Page 10 Grind’n Brew®Coffee Systems

Brew Volume Setting Menu

This feature sets the brew time based on water volume of a desired container. Before using this feature, remove the

brew basket, remove the spray head and place the desired container in place underneath the brewer.

The Brew Volume Setting Menu is started by selecting a brew cycle and holding in the START switch for 5

seconds. The display will show “Pro” at this time. Again press the START switch, and water will begin dispensing

into the container. The display shows a Brew Time count at this time. When satisfied with the water level, again

press the START switch. At this point the Brew Time flashes on the display for 20 seconds. Press the START

switch again within the 20 seconds to accept the new Brew Time. No changes will be made if the Brew Time is not

confirmed in this last step.

There are four independent brew times in the unit. The set Brew Time is the cycle shown on the keypad. The

keypad cannot be modified while setting the brew volume. This feature is disabled by the User Lockout Jumper.

System Restore Feature

This function will restore a Grind’n Brew® unit to its original factory settings. To activate system restore, power on

the unit while holding in the DOWN button.

Continue holding the DOWN button and the display will scroll “rEStorE” to indicate that a system restore is about to

happen. If the DOWN button is released at this point, the restore is cancelled. If the button hold is continued, the

display will scroll “donE” to show completion of a system restore.

Upon a successful restore, the original factory settings will override all changes. The bean counter is not affected.

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