GRINDMASTER CORPORATION 10H Grind’n Brew Coffee System

Product Information

Specifications

Product Usage Instructions

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

Installation Steps:

1. Inspect the unit to see if any damage occurred in the shipment.
2. Position the brewer on the counter. Place on the sturdy permanent countertop. If you have an airport brewer, install the 4 plastic legs (included) at the bottom of the brewer. Lean the brewer towards its side to expose screw holes underneath for the legs. Adjust the leg height to suit the size of the airports you will use.
   IMPORTANT : Adjust the feet to level the brewer. With a bubble level, check to see that the brewer is level on the countertop.

Water Hook-up (All Models)
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.

Water Hook-up Steps:

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. Before installing the brewer, flush out the water line by running approximately 1 gallon of water into a pail. This will ensure no sediment from a new installation can get into the brewer.

FAQ

• Q: What should I do if I notice damage to the unit upon delivery?
  A: If you notice any damage to the unit upon delivery, please contact our customer support immediately for assistance.

• Q: What is the recommended water pressure for the equipment?
  A: The incoming water pressure should be greater than 20 psi and not more than 100 psi.

Models : -11, -21, -10, -20 including H, HQ versions
Prior authorization must be obtained from Grindmaster Corporation for all warranty claims.

PRODUCT OVERVIEW

Warning Labels

The following warning labels were on your grinder brewer when it shipped from the factory. They should remain on your grinder brewer in good, readable condition at all times. If one of your labels is missing or damaged, order a replacement label immediately.

Part #71104
Located on the outside back, the grinder brewer casing

WARNING:

• USE ONLY ON A CIRCUIT THAT IS PROPERLY PROTECTED AND CAPABLE OF THE RATED LOAD.
• ELECTRONICALLY GROUND THE CHASSIS.
• DO NOT DEFORM PLUG OR CORD.
• FOLLOW NATIONAL AND LOCAL ELECTRICAL CODES.
• WATER CONNECTIONS SHALL COMPLY WITH THE PLUMBING CODE OF BOCA & THE FOOD SERVICE SANITATION MANUAL OF THE FDA
• DO NOT USE NEAR COMBUSTIBLES.
• FAILURE TO COMPLY RISKS PERSONAL INJURY, DAMAGE TO EQUIPMENT, FIRE OR SHOCK HAZARD.
• READ THE ENTIRE OPERATING MANUAL INCLUDING THE LIMIT OF WARRANTY AND LIABILITY BEFORE BUYING OR USING THIS PRODUCT.
• ALWAYS UNPLUG THE UNIT FROM THE POWER SUPPLY BEFORE SERVICING.

Technical Data

Single Bean Domestic Models

Dual Bean Domestic Models

• BASED ON 4 in LEG HEIGHT
  INCLUDING WATER INLET FITTING

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 the unit to see if any damage occurred in the shipment.
2. Position the brewer on the counter. Place on a sturdy permanent countertop. If you have an airport brewer, install the 4″ plastic legs (included) at the bottom of the brewer. Lean the brewer towards its side to expose screw-holes under- neath legs. Adjust the leg height to suit the size of the airports you will use. IMPORTANT: Adjust the feet to level the brewer. With bubble level, check to see that the brewer is level on the 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. The water supply should be a 1/4″ I.D. dedicated line branched off a 1″ or larger supply line.
2. Before installing the brewer, flush out the water line by running approximately 1 gal. of water into a pail. This will ensure 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 fitting 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.

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 the 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.

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.

IMPORTANT : Brewers are factory set for throw weight and water portion. Please check that the installation is correct before making adjustments. No adjustments should be necessary for normal installation.

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 the “Grind and Brew” lights are lit.
4. Choose the Portion Size. Press the middle touchpad until the desired volume is lit.
5. Choose Decaf or Regular coffee (only applicable to dual-bean Grind’n Brews). Press the left touchpad. The arrow will either point left or right for Decaf or Regular.
6. Place a decanter or airport 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 automatically 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.

Bean Counter
The built-in bean counter measures the 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 the 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.

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.

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.

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.

Brew Volume Setting Menu

• This feature sets the brew time based on the 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 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 the system restoration, 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 canceled. If the button hold is continued, the display will scroll “donE” to show the completion of a system restore.
• Upon a successful restore, the original factory settings will override all changes. The bean counter is not affected.

Factory/Field Test Menu
This menu is intended to check product functionality both at the end of the factory line and in the field. This mode is entered by pressing and holding the DOWN key on the display board and Full/Half key on the keypad for 10 seconds. Once the menu is entered, the unit will start with an LED test that lights all LEDs and segments on the display. Navigation is done just like the User Menu. Refer to the table below for operation. Field Test Mode exits after stepping through all modes only – there is not a timeout.

Water System Errors
Three system errors can be detected by the microprocessor. These errors are:

1. Water Fill Error (Er1) – the water full detection has failed, and the fill valve has been on for at least 5 minutes.
2. Thermistor Error (Er2) – the Thermistor is detected as either open, shorted OR the water is boiling.
3. Heater Error (Er3) – the heater has been on for 3 minutes, but no rise in water temperature was detected.
   If any of these errors are detected, the unit will shut off all water fill and heat-related functions. Brewing is disabled, but grinding is still allowed. The display will show the error when the unit is idle. To clear any error, the user can hold in the UP key for 5 seconds, reset power to the unit, or enter field test mode.

Timer Settings

• Increase of 1 sec. to timer setting equates to an increase in fluid volume by 1/2 oz.
• Decrease of 1 sec. to timer setting equates to a decrease in fluid volume by 1/2 oz.

Setting the Grind (Refer to Figure C)
Tools Required : #2 Phillips screwdriver, 7/8″ box wrench, large flat blade screwdriver

1. Remove the front decal panel by removing the screw on the underside of the panel and 2 screws on both sides of the panel.
2. Loosen the adjusting screw lock nut by turning counterclockwise.
3.  Turn slotted adjusting screw clockwise to make the grind coarser or counterclockwise to make the grind finer. Generally, a 1/8 to 1/4 turn will provide the desired adjustment.
4. After adjustment has been made, re-tighten the adjusting screw lock nut.
5. Visually inspect the grind adjustment with a small portion of coffee and readjust if necessary.
6. Reinstall the front decal panel.

Maintenance

Daily Cleaning

• Cabinet : The outside of the machine can be cleaned with a damp cloth, a household dusting spray or a stainless steel cleaner. Do not use any abrasive such as Scotchbrite or Brillo pads. These may mar the finish. Wipe the underside of the cabinet hood with a clean cloth. Be especially careful when using soap or detergent around the spray head. Any soap left on the deflector may give an unpleasant taste to the first brews.
• Warmers : The warmer plate is easy to clean and will maintain its appearance longer if cleaned regularly. Coffee stains can be wiped off with a damp cloth. Use detergent or sanitizer for heavy deposits, but refrain from using abrasives.

Weekly Cleaning (Refer to Figure D)

• Slide Valve: The slide valve behind the spray deflector under the cabinet hood should be wiped off with a clean, dry cloth. Using the finger tab open the slide valve and wipe the ground coffee from inside of the spout, seal and slide valve.
  NOTE : When the machine is not in use, the finger tab will automatically activate every 60 minutes to keep it clear.

• Brew Basket, Airports, and Decanters: Use commercial-grade urn cleaner (as directed by the manufacturer) and rinse thoroughly

Shear Plate Replacement (Refer to Figure E)

Tools Required: #2 Phillips screwdriver, large flat blade screwdriver

1. Unplug the machine.
2.  Remove the front panel. Shut off the bean flow to the grinder. Single bean units require you to pull the bean shut-off valve forward. Dual bean units require you to push the bean shut-off valve back into theslots in the hopper.
3. Remove the hopper cradle. There are 5 screws (2 in front and 3 across the back) holding the hopper cradle in place.
4. Remove the spray head. First, remove the spray deflector by spinning it clockwise. Second, pull the spray nozzle away from the mounting sheet.
5. Remove the grind cap by loosening the 2 screws and rotating the grind cap away from the screws.
6. Pull out the revolving burr and feedworm assembly. The sweeps on the revolving burr and feedworm assembly. The sweeps on the revolving burr must line up with the cutouts on the grind head.
7. Remove the shear cap and broken shear plate.
8. Slide the rotating burr onto the motor shaft, aligning up the sweeps with the cutouts on the grinding head. Rotate the burr so that the burr is held back into the burr pocket by the sweeps on the grind head lip. Slide the drive coupler into place. Rotate the slot on the drive coupler with the feedworm. Insert a new shear plate.
9. Reassemble the remaining components in reverse order of disassembly

Troubleshooting Guide

The following procedures must be performed by a qualified service technician
CAUTION : Unplug the power cord from the outlet before cleaning or servicing the unit.

If you still need help, call our Technical Service Department at 800-695-4500 (USA & Canada only) or 502-425-4776, Monday through Friday, 8:00 AM – 8:00 PM Eastern Standard Time or an authorized service center in your area. Please have the model and serial number ready so that accurate information can be given. Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.

Assembly

Exploded View Grind’n Brew Assembly

Exploded View Hot Water Tank Assembly

Exploded View Grinder Assembly

Wiring Diagram

115/230V, 60Hz

Tel 502-425-4776 • Fax 502-425-4664 • 1-800-695-4500 (USA & Canada only)
P.O. Box 35020 • Louisville, KY 40232 • USA
www.grindmaster.com • email: info@grindmaster.com
© Grindmaster Corporation, 1997
PRINTED IN USA

References

• Grindmaster - Crathco - Cecilware Pro
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