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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Grindmaster CC-302-20 service manual Troubleshooting Guide
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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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