Grindmaster CC-302-20 service manual Troubleshooting Guide

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Troubleshooting Guide (cont.)

Only a qualified service technician should perform Electrical and mechanical adjustments or repairs. Always dis-

connect power before attempting any maintenance procedures.

Diagnostics for all PIC2, PIC3, PIC4, PIC5, and PIC6’s:

WTR FAIL = Light flashes when watchdog timer disables machine after 300 seconds of continuous inlet valve operation.

THERM FAIL = Light flashes when thermistor fails or thermistor is disconnected.

WTR HEATER = Light flashes when heater is on.

POWER OK = Light stays on when transformer is supplying proper voltage to controller.

FRONT VIEW OF CONTROL BOARD (BEHIND FRONT ACCESS PLATE)

If WTR FAIL light is flashing:

Ensure water supply to machine is turned “on”.

Reset machine power “off” then “on”.

If THERM FAIL light is flashing:

Reset machine power “OFF” then “ON”. If green ready light does not turn off after 10 seconds then: Check thermistor connections.

If connected properly, replace faulty thermistor. (Mineral build-up may be the cause.)

WTR HEATER light will flash on and off when the water tank is being heated:

Note: When green “ready” light on front of machine is “Off” WATER HEATER light should flash.

If light works properly and machine is not heating, replace faulty heater. (Mineral build-up may be the cause.)

If POWER OK light is off:

Make sure power switch is on and machine is plugged in.

If switch is on, and light is off, call factory for assistance.

Note: PIC 4/5/6 - If water gets cut off to machine for 5 minutes during operation, tank water will not replenish, heater circuit will be disabled, and heads #1-3 will be disabled. Other heads will still operate. Left controller will read “WATER FAIL”. What could happen is that other heads will dispense low or no water (possibly cold) and full amounts of powder.

Note: PIC 4/5/6 - “Thermistor Fail” - When the thermistor reads out of range or is disconnected, the machine shuts down the dispensing and heating. Only heads #1-3 are disabled, other heads can still operate. This can cause cold drinks to be dispensed out of the right head(s).

If you still need help, call our service department at (800) 695-4500 (USA and Canada only) or (502) 425-4776 (Monday through Friday, 8 am - 6 pm EST) or an authorized service center in your area. Please have the model and serial numbers ready so that accurate information may be given.

Prior authorization must be obtained from Grindmaster Corporation’s Technical Services Department for all warranty claims.

Crathco® Powdered Beverage Dispensers

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Contents Crathco Powdered Beverage Dispensers Advertencia Crathco Powdered Beverage Dispensers Start-up Procedure for Standard Units InstallationStart-Up Procedures for Pump Units PIC 2P & PIC 3P only Water Inlet ConnectionHow to Dispense a Cup of Cappuccino AdjustmentsPortion Adjustment Drink Strength Adjustment Thermostat AdjustmentDrink Strength Adjustment for Model PIC3E or PIC33AE CleaningWeekly Reassembling the Hoppers PIC 1/2/3/5/6 Refer to Figure WeeklyQuarterly Cleaning Weekly CleaningPIC Preventative Maintenance Checklist Every 6 to 12 months Service To Prepare for ShipmentDraining the Tank PIC 2/3/4 120V Whipper Motor Replacement Kit # Quantity Description 230V Whipper Motor Replacement Kit # Quantity DescriptionPurging Machine of All Water for Shipment in Cold Areas Figure Q Removal of Whipper MotorsCrathco Powdered Beverage Dispensers Figure CC Removal of Inlet ValveThermistor Curve Removal of ThermistorRemoval of Blower Motor Removal of Auger MotorsRemoval of Controller Removal of Heater RelayCrathco Powdered Beverage Dispensers Problem Probable Cause Corrective Action Troubleshooting GuideTroubleshooting Guide PIC 1 Chassis Parts PIC 1 Hopper Bracket PIC 1 Door Assembly Units with serial numbers beginning with L or T PIC 1 Tank AssemblyUnits with serial numbers beginning with T $2!7.Ĥ 63097 PIC 2/3 Chassis Parts PIC 2/3 Hopper Bracket PIC 2/3 Tank Assembly PIC 2/3 Door Assembly PIC 4 Chassis Parts Base PIC 4 Control Bracket AssemblyPIC43A Control Bracket Assembly PIC 4 Hopper Bracket PIC 4 Hopper OHPHQW PIC 4 Tank AssemblyPIC 4 Door Assembly PIC 4 Final Assembly PIC 5 Base Assembly PIC 5 Casing AssemblyItem NO. Part NO. Description PIC 5 Door AssemblyHopper Brkt Asy PIC5 PIC 5 Hopper Bracket AssemblyCrathco Powdered Beverage Dispensers PIC5 Final Assembly PIC 5 Final AssemblyPIC 6 Lid Assembly PIC 6 Casing AssemblyPIC 6 Base Assembly 62876 62874PIC 6 Door Assembly PIC 5/6 Control Bracket Assembly62863 PIC 6 Hopper Bracket AssemblyPIC 6 Final Assembly PIC 1 120V and 120/240V Q Model Wiring PIC 1 230V E Model Wiring PIC1KE or PIC1KAE, 230V E Model Wiring PIC1K or PIC1KA 120 & 120/240 Q Model Wiring PIC1KAEW or PIC1KEW Wiring CAP1AE or CAP1E 230V E Model Wiring PIC 2/3 120 & 120/240V Q Model Wiring Crathco Powdered Beverage Dispensers PIC33AE 230V CE Model Wiring with 3-Portion Touch Pads PIC 2/3 100 & 200V J Model Wiring Crathco Powdered Beverage Dispensers Crathco Powdered Beverage Dispensers PIC 4 Wiring PIC43A 120V & PIC43AQ 120/240V Wiring PIC43AZ and PIC43AWZ Model Wiring with 3-Portion Touchpad PIC4Z, PIC4AZ, PIC4WZ, PIC4AWZ 240V Model Wiring PIC 5/6 Wiring Crathco Powdered Beverage Dispensers Grindmaster Corporation

CC-302-20 specifications

The Grindmaster CC-302-20 is a highly regarded coffee brewing machine designed for cafes and restaurants that require both quality and efficiency. This model stands out for its user-friendly features and advanced brewing technology, making it a popular choice among coffee enthusiasts and professionals alike.

One of the main features of the Grindmaster CC-302-20 is its programmable brewing cycles. This allows operators to customize brew times and temperatures according to their specific coffee offerings. The machine can brew up to 3 gallons of coffee per cycle, ensuring that businesses can meet high demand during peak hours without compromising on quality.

A significant characteristic of the CC-302-20 is its digital display, which provides real-time information on brewing status and alerts for maintenance needs. This feature ensures that users can monitor the brewing process at a glance, minimizing the chance of over-brewing or under-brewing coffee. The machine also includes an automatic shut-off function, which enhances energy efficiency and safety.

The Grindmaster CC-302-20 incorporates advanced brewing technology, notably its precision temperature control system. This system guarantees that water is heated to the optimal brewing temperature, which is crucial for maximizing the extraction of coffee flavors. This feature is particularly beneficial for cafes that pride themselves on serving high-quality, flavorful coffee.

Additionally, the CC-302-20 is designed with a durable, stainless steel construction, ensuring long-lasting performance in busy commercial environments. Its compact footprint makes it suitable for various countertop sizes, while the sleek design contributes to an appealing aesthetic in any coffee shop or restaurant.

Maintenance is another critical aspect of the Grindmaster CC-302-20. The machine is engineered for easy access to components, making it simple for staff to clean and service as needed. Regular maintenance routines can help extend the life of the equipment and maintain optimum brewing performance.

In conclusion, the Grindmaster CC-302-20 coffee brewer is an exceptional choice for establishments seeking a reliable, efficient, and high-quality brewing solution. Its programmable features, precision temperature control, and durable design make it an investment that meets the demands of busy coffee environments while consistently delivering delicious brews.
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