Grindmaster MG236-2B, MG23-2B, MG235-2B Crathco Granita Preventive, Maintenance PM, Instead

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Crathco Granita Preventive

Model # ___________________________

Maintenance (PM)

Serial # ____________________________

Date: ______________________________

Checklist for Kit 90104 -

PM by _____________________________

 

Serial # 11258 and below*

Of Company ________________________

(If unit has been converted to unhardened

Store Name/# ______________________

stainless shaft system, then use kit #90566

Address ___________________________

instead. )

__________________________________

 

 

Store Mgr Name ____________________

 

Signature __________________________

A preventive maintenance visit should be performed every 3

months. Failure to complete PM’s every 3 months is considered abuse of the machine, and therefore voids the war- ranty. Proof of PM must be documented with Grindmaster Corporation to maintain warranty coverage. To document your PM, complete this form with signatures, place used/worn parts that were replaced during the PM inside enve- lope, and mail to Grindmaster Corporation. Parts returned should include 2 spindle bushing evaporator seals, 2 rub- ber bell shaped shaft seals, valve o-rings and shafts (if applicable).

The following procedures should be performed during a Preventative Maintenance visit, using PM kit # 90104:

Document model and serial number of equipment and record above.

Check product temperature and consistency for proper setting - adjust if necessary.

Insure product is being mixed properly and is within specification (check and document brix - most products should be around 13% - refer to product manufacturer’s recommendations for exact recommended brix). Record Brix reading here: Left Bowl _____ Right Bowl _____

Check for leaks at gaskets, o-rings, front shaft seal, etc. Empty product from bowls.

Disassemble unit completely.

Clean and sanitize all disassembled parts. Clean and sanitize top tray and freezing barrel.

Clean out condensation tube with sanitizer and long brush. Check condition of all panels, bowls, lids - replace if necessary.

Check mixing rods and augers for wear, check mixing rod bearing for wear - replace if necessary. Check for bowl knobs (two per bowl to lock down bowl in front) - replace if necessary.

Check operation of lights in lid and rear of unit (if equipped) - replace light bulbs if necessary.

Clean re-usable air filter if so equipped (standard on G & MG models, optional on ID models). Check condition of filter and replace if necessary.

Clean condenser.

Check condition of bowl gasket and replace if necessary. Replace all o-rings on dispense valves and lubricate.

Check drive shaft. If surface is not smooth or the drive shaft is not secure (excessive movement in and out) use PM kit #90110, or 90110B in place of 90104 above.

Replace spindle bushing seal in front of evaporator using extraction tool.

Replace bell shaped rubber shaft seal on front of freezing barrel (generously lubricate inside seal)

Lubricate parts where appropriate (dispense valve o-rings, inside of shaft seal, inner rim of bowl where it meets with the bowl seal)

Re-assemble unit and refill with product

Verify and document defrost timer setting and operation and time of day setting and adjust if necessary. Check thermostat setting on ID and MG models. Thermostat setting should be between 1-1/2 and 2. Verify compressor operation and freezer controller operation.

Verify ventilation is adequate (8” on both sides and back). Check electrical connections and wiring.

Check fan operation (1 condenser fan and 2 gear motor fans) and clean fan or blades if necessary. Review proper periodic care and cleaning instructions (disassembly, cleaning, sanitizing, lubrication and

re-assembly) with store personnel. Review proper product mixing and handling instructions with store personnel. Demonstrate and train store personnel to follow proper procedures (stress importance of store level

maintenance such as lubrication and filter cleaning).

Make sure store personnel have appropriate supplies (lubricant and sanitizer) to care for machine.

G & MG Series Granita Machine

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Contents Crathco Visual Granita Machine Introduction and Warnings Instructions For Machine Transport InstallationFigure F Connection To Main Power SupplyProgramming G Series Electronic Touchpad Models Preparing ProductOperating Panel Operating Panel -Electronic TouchpadModel G23-2B Electronic Touchpad Setting Defrost Timer Night SettingOperate in Manual Mode without Defrost Timer Activated Operate in Automatic Mode with Defrost Timer ActivatedTo obtain cold night/defrost drinks Stand-by mode settingDefrost Timer Operating Instructions To obtain a slushAdjustments Consistency AdjustmentDispensing Product Daily Cleaning Cleaning and Sanitizing ProceduresRectly positioned Cleaning and Sanitizing Procedures con’tRemoving and cleaning the filter Weekly MaintenanceLid Lights Maintenance con’tCleaning the Condenser Monthly Replacing the Lightbulbs As NeededTo Replace Spindle Bushing Seal Maintenance Bell Shaped SealRing Maintenance Spindle Bushing SealChecklist for Kit Serial # 11259 and above Crathco Granita Preventive Maintenance PMStainless shaft system, then use kit #90566 Maintenance PMCrathco Granita Preventive If unit has been converted to unhardenedAccessories not included Security Kit InstallationAutofills 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.
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