Grindmaster MG236-2B, MG23-2B, MG235-2B Troubleshooting Guide, Problem Possible Cause Solution

Page 17

Troubleshooting Guide

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

Problem

Possible Cause

Solution

 

 

 

The machine does not cool, or cools

• The space around the machine is

• Allow at least 8” (20cm) between the

only partially, but the compressors

inadequate for ventilation

machine and anything next to it; keep

are running

 

away from heat sources

 

• Freezer is in defrost

• Return to freeze mode

 

• The condenser fins are clogged with

• Remove the side panels. Using a

 

airborne particles

brush or compressed air clean the

 

 

condenser

 

• Fan motor is not running

• Check the fan motor’s electrical

 

 

connections and, if disconnected,

 

 

reconnect. If still not operating,

 

 

replace the motor

 

• Refrigerant is leaking

• Locate the leak, eliminate it and

 

 

recharge the system

 

 

 

The machine does not cool or cools

• Electrical components of the

• Replace the malfunctioning

only partially, but one or more of the

compressor(s) are not functioning

components

compressors are not running

• Some electrical connections are not

• Check the contacts and correct those

 

complete

that are incomplete

 

• One or more of the compressors are

• Replace the compressor(s)

 

malfunctioning

 

 

• No current is coming to the “com-

• Check the electrical connections to

 

pressor delay” PC board

the PC board as well as the

 

 

transformer feeding the PC board

 

 

and correct

 

 

 

The machine over-freezes, making

• The product brix is too low

• Check the product brix and correct

the auger movement slow or

• The screw setting for the product

• Reset the screw toward the “-”

stopped

consistency control system is set too

position to produce a thinner

 

far toward the “+” position

consistency product

 

• The limit switch arm is bent away

• Using pliers, straighten the limit switch

 

from the gearmotor and prevents

arm

 

contact

 

 

• The level of the product in the bowl is

• Add more product or turn the

 

too low, exposing the auger

refrigeration “Off”

 

• The compressor PC board contacts

• Replace the PC board

 

don’t open

 

 

 

 

The machine is noisy

• The fan motor blades are hitting

• Check and correct

 

internal components

 

 

 

 

The main power switch is “On”. The

• The fuse(s) are blown

• Replace the fuse(s)

unit is not running.

• The pressure cutout switch has

• Clean the condenser or add

 

activated

ventilation space around the machine

 

 

(the cutout switch reset is automatic

 

 

when the conditions are corrected)

 

• Some electrical connections are not

• Check the contacts and correct those

 

complete

that are incomplete

 

• The main power is not functioning

• Replace the switch

 

 

 

Product is leaking out of the bowl

• One of the bowl seals is not in place

• Replace or reposition the seals

 

 

 

G & MG Series Granita Machine

Page 17

 

 

Page 16 Page 18
Image 17
Page 16 Page 18
Contents Crathco Visual Granita Machine Introduction and Warnings Instructions For Machine Transport InstallationFigure F Connection To Main Power SupplyOperating Panel Preparing ProductOperating Panel -Electronic Touchpad Programming G Series Electronic Touchpad ModelsModel G23-2B Electronic Touchpad Setting Defrost Timer Night SettingOperate in Manual Mode without Defrost Timer Activated Operate in Automatic Mode with Defrost Timer ActivatedDefrost Timer Operating Instructions Stand-by mode settingTo obtain a slush To obtain cold night/defrost drinksDispensing Product AdjustmentsConsistency Adjustment Daily Cleaning Cleaning and Sanitizing ProceduresRectly positioned Cleaning and Sanitizing Procedures con’tRemoving and cleaning the filter Weekly MaintenanceCleaning the Condenser Monthly Maintenance con’tReplacing the Lightbulbs As Needed Lid LightsRing Maintenance Seal Maintenance Bell Shaped SealSpindle Bushing Seal To Replace Spindle BushingChecklist for Kit Serial # 11259 and above Crathco Granita Preventive Maintenance PMCrathco Granita Preventive Maintenance PMIf unit has been converted to unhardened Stainless shaft system, then use kit #90566Autofills Accessories not includedSecurity Kit Installation Problem Possible Cause Solution Troubleshooting GuideDispensing valve Troubleshooting Guide cont’dFor units up to serial number Exploded View MG23-2B 115/60Exploded View G23-2B 115/60 Serial number 8195 and higher Exploded View MG23-2B 115/60 Exploded View G235-2B 220/50 Exploded View MG235-2B 220/50 Exploded View G236-2B 220/60 Exploded View MG236-2B 220/60 Part Description Crathco Granita G & MG Series Parts ListGear Motor Exploded View Refrigeration Diagram Model G Series 115V/220V Refrigeration Diagram Model MG Series Electrical Diagram Model MG Series Electrical Diagram Model MG Series Electrical Diagram Model G Series 115V/220V Page

G23-2B, G235-2B, G236-2B, MG235-2B, MG23-2B specifications

The Grindmaster lineup, which includes models MG236-2B, MG23-2B, G236-2B, G23-2B, and MG235-2B, represents a significant advancement in commercial coffee grinding technology. These machines are designed for high-performance grinding capabilities in coffee shops, cafes, and other businesses that require consistent and efficient results.

One of the defining features of the Grindmaster MG236-2B and its counterparts is their superior grinding consistency. Each model is engineered to produce uniform particle sizes, which is essential for optimal extraction during brewing. This consistency not only enhances flavor but also ensures that customers receive a high-quality coffee experience every time.

These machines are equipped with advanced grinding technology, including high-quality burr grinders that effectively reduce heat generation during operation. This is critical as excessive heat can negatively impact the flavor and aroma of the coffee beans. The functionality focused on maintaining the integrity of the coffee's essential oils, allowing baristas to extract the best flavors from their beans.

Durability is another hallmark of the Grindmaster MG series. Made from robust materials and designed for heavy-duty use, these grinders can withstand the rigors of a busy commercial environment. The models are also easy to clean and maintain, featuring accessible components that simplify routine servicing.

User-friendliness is considered in their design. Each model comes with intuitive controls that allow baristas to adjust grind settings easily. This flexibility helps in catering to various brewing methods, from fine grinds for espresso to coarser settings for French press or pour-over brewing.

Moreover, the Grindmaster MG236-2B and similar models are designed to minimize noise during operation, which is a crucial feature for maintaining a pleasant atmosphere in customer-facing environments.

In addition to these personal features, the Grindmaster lineup also emphasizes energy efficiency. The machines are designed to consume minimal power without compromising performance, making them a cost-effective choice for businesses aiming at sustainability.

Overall, the Grindmaster MG236-2B, MG23-2B, G236-2B, G23-2B, and MG235-2B models represent cutting-edge technology in coffee grinding. Their combination of consistency, durability, user-friendliness, and energy efficiency makes them ideal for any coffee-centric business looking to elevate their brewing game and provide an exceptional coffee experience for their customers.
Top Page Image Contents