Grindmaster 20H, 21H instruction manual Troubleshooting Guide, Problem Possible Cause Remedy

Page 15

Troubleshooting Guide

The following procedures must be performed by a qualified service technician.

CAUTION: Unplug power cord from outlet before cleaning or servicing the unit.

Problem

 

Possible Cause

 

Remedy

Weak coffee

Not enough coffee used

Set to portion more coffee.

 

Grind is too coarse

Readjust grind to a finer grind.

 

Water not hot enough

Check spray temp, should be

 

Too much water used (half brews)

 

greater than 185°F.

 

Adjust brew time at the controller.

 

Coffee bed has dry areas

Spray deflector broken or missing.

 

 

 

 

 

 

 

Replace.

Strong coffee

Too much coffee used

Readjust coffee portion.

 

 

 

 

 

Bitter coffee

Grind is too fine

Coarsen grind setting.

 

 

 

 

 

Grounds in coffee

Paper filter collapsed during

Use proper filter.

 

 

brewing

 

 

 

 

 

 

 

Brew basket overflowed

Too much coffee

Use no more than 3 1/2 oz. of coffee.

 

Coffee ground too finely

Coarsen grind.

 

Double batching

You must dump old coffee and use

 

 

 

 

fresh new filter for each brew.

 

 

 

 

 

Unpleasant taste

Water tank or brew basket needs

Clean, sanitize (de-lime).

 

 

cleaning

Refer to Regular Maintenance

 

 

 

 

section.

Brewer will not brew

Basket has not been changed

Remove basket, replace filter,

 

 

 

 

reinstall.

 

 

 

 

 

Grinder will not start when start

Main power switch turned off

Turn main power switch, on located

button is pushed

 

 

 

on back of unit (left side from front) on.

 

No power to outlet

Check outlet with lamp or radio to

 

 

 

 

verify outlet has power.

 

Basket out

Ensure basket is in position.

 

Circuit breaker has tripped

Reset circuit breaker (located on

 

 

 

 

back of unit) by pushing the reset

 

 

 

 

button in until you hear a click.

 

Basket has not been changed

Remove basket, replace filter,

 

 

 

 

reinstall.

 

 

 

 

 

Grinder runs or hums but no

Shear disc is broken

Replace shear disc. See Shear

coffee is dispensed

 

 

 

Disc Replacement section.

 

Obstruction in opening of auger

Remove hopper and clear

 

 

assembly (on dual bean units)

 

obstruction.

 

Obstruction in opening to grinding

Remove hopper and clean

 

 

chamber

 

obstruction.

 

Slide valve is bending

Check for free operation of slide valve.

 

 

 

 

Adjust solenoid mount or slide valve

 

 

 

 

mount as required. Make sure white

 

 

 

 

slide valve gasket is not touching

 

 

 

 

moving parts.

 

Blown fuse on controller board

Check for blown fuse and replace

 

 

(Dual bean only)

 

with 5 Amp fuse.

 

 

 

 

 

Quantity of coffee dispensed

Defective timer in controller

Check the length of time grinder

each throw is not the same

 

 

 

runs with watch.

 

 

 

Remove upper assembly and clean

 

 

 

 

obstruction.

 

Slide valve is binding

Check for free operation of slide

 

 

 

 

valve. Adjust solenoid mount or

 

 

 

 

slide valve mount as required.

 

 

 

 

Make sure white slide valve gasket

 

 

 

 

is not touching moving parts.

 

 

 

 

 

Grind’n Brew® Coffee Systems

Page 15

Image 15
Contents Grind’n Brew Coffee Systems Page Grind’n Brew Coffee Systems Technical Data Dual Bean Domestic Models Technical Data Single Bean Domestic ModelsWater Hook-up All Models Refer to Figure a Unit InstallationOperating the Touchpad Refer to Figure B Electrical Hook-up and Start-up Procedure All ModelsUser Lockout BrewingUser Settings Bean CounterPulse Brew Cycle User Menu Brew Settings Brew Cycle SelectionSystem Restore Feature Brew Volume Setting MenuStep Function Operation Description Factory/Field Test MenuTimer Settings Water System ErrorsDaily Cleaning MaintenanceFigure E Shear Plate Replacement Refer to Figure EProblem Possible Cause Remedy Troubleshooting GuideCircuit breaker continuously Exploded View Grind’n Brew Assembly Mounting Sheet Assembly Warmer Assembly Basket Arm Assembly Water Fill Valve 120 VAC Exploded View Hot Water Tank AssemblyExploded View Grinder Assembly Single Bean Upper Assembly Dual Bean Upper Assembly Wiring Diagram 115/230V, 60Hz Page Grindmaster Corporation Form # BW-350-14 70661
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20H, 21H specifications

The Grindmaster 20H and 21H are robust, innovative espresso grinders designed to meet the demands of coffee shops and establishments that value precision and quality in their coffee production. These models stand out due to their advanced features, which cater to both high-volume usage and the desire for a consistent grind.

One of the main characteristics of the Grindmaster 20H and 21H is their powerful grinding mechanism. Equipped with high-quality ceramic burrs, these grinders provide an exceptionally uniform grind size, which is crucial for achieving the perfect extraction of coffee flavors. The ability to fine-tune the grind setting allows baristas to customize the grind for various espresso blends, ensuring that each shot is brewed to perfection.

Another significant feature of these models is their impressive grinding speed. With a grinding capacity that can handle a significant number of shots per minute, the Grindmaster 20H and 21H are ideal for busy coffee shops where efficiency is paramount. This capability helps reduce wait times during peak hours, enhancing customer satisfaction.

The design of the Grindmaster 20H and 21H is both ergonomic and user-friendly. The intuitive control panel allows baristas to easily adjust settings, making it straightforward to switch between different coffee blends. The grinders are also designed to minimize coffee retention, meaning less waste and fresher grounds for every cup.

Moreover, the Grindmaster 21H model includes additional smart technologies that enhance the grinding experience. Features like programmable dosing and digital displays offer even greater precision and ease of use. These technologies ensure that each dose of coffee is consistent, contributing to the overall quality of the espresso served.

In terms of build quality, both models boast a sturdy construction that ensures durability and longevity, making them a reliable investment for any coffee establishment. Their compact design allows for easy integration into various coffee setups without compromising on performance.

Overall, the Grindmaster 20H and 21H espresso grinders represent a perfect blend of innovation, efficiency, and reliability, making them essential tools for professional baristas and coffee enthusiasts alike. The advanced features and user-friendly design ensure that they can meet the high standards demanded by the modern coffee industry.