TROUBLESHOOTING (Continued)

PROBLEM

PROBABLE CAUSE

REMEDY

Refrigeration

1. Compressor ON/OFF switch.

Check for "ON" position or no continu-

Dispense stations not working.

 

ity - replace switch.

Note: Cooling failure or excessive

2. Dirty condenser filter or fins.

Clean filter and fins or replace con-

bath and cabinet temperatures for

more than 4 hours will result in dis-

 

denser filter. (Filter not supplied on

pense lockout or no dispense.

 

some machines).

 

3. Condenser fan not running.

A) Check for 120V or 230V AC. Re-

 

 

place fan motor or check fan blades

 

 

for obstructions.

 

 

B) Check compressor LED on circuit

 

 

board. If ON, relay coil should have

 

 

power (120 or 230 VAC).

 

4. Compressor relay not activating.

Check compressor relay coil for 120

 

 

or 230vac.

 

 

NOTE: Always check power with

 

 

coil attached. If compressor LED is

 

 

ON and no 120 or 230vac - replace

 

 

board. If yes, 120 or 230vac - replace

 

 

relay.

 

 

Note: Relay contacts are normally

 

 

open.

 

5. Compressor not running.

Check compressor thermal overload

 

 

(N/C). If open check for dirty con-

 

 

denser filter or adequate ventilation

 

 

and space around machine.

 

6. Compressor running and not

 

cooling.

Dispenser Locked Out

1. Check Dispense Lockout switch.

Dispense stations not working.

Check refrigeration system for leaks and proper charge.

(A)Set switch to ON position.

(B)Check switch and harness for proper continuity.

Cooling system failure.

1. Refrigeration or cold water recir-

 

culation system.

Check all previous items that pretain to refrigeration or cold water recir- culation

7

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Bunn JDF-4SB, JDF-4D manual Problem Probable Cause Remedy, Refrigeration, Dispenser Locked Out

JDF-4D, JDF-4SB, JDF-4S specifications

The Bunn JDF-4S is a high-performance commercial coffee brewer designed to meet the needs of busy coffee shops, restaurants, and other establishments requiring a reliable and efficient coffee brewing solution. This versatile machine boasts an array of advanced features and technologies, making it a prominent choice among professionals in the coffee industry.

One of the most notable features of the Bunn JDF-4S is its ability to brew up to 4 gallons of coffee per hour, ensuring that establishments can keep pace with high-demand environments. This capacity makes it an ideal choice for venues that experience peak periods of coffee consumption, minimizing wait times for customers. The machine is designed with a multiple-brew option, allowing users to select various brew methods, which can cater to diverse customer preferences.

The JDF-4S incorporates Bunn’s patented brewing technology, which utilizes a precision-controlled process to ensure optimal flavor extraction. The brewed coffee is delivered at an ideal temperature, typically between 195°F and 205°F, promoting maximum taste and aroma. The machine also features a programmable digital controller that enables users to set specific brew times and adjust water temperature settings to achieve consistent results.

Another significant characteristic of the Bunn JDF-4S is its durability and ease of use. Constructed with high-quality materials, the machine is built to withstand the rigors of daily operation. The user-friendly interface features a simple touchpad design for easy navigation and programming. Additionally, the machine includes a built-in diagnostics program, helping users quickly identify and troubleshoot potential issues, thereby minimizing downtime.

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In terms of maintenance, the Bunn JDF-4S is designed with user convenience in mind. The machine includes a rinse and clean cycle to ensure optimal hygiene and coffee quality. Integrated clean alerts guide users through the cleaning process, promoting regular upkeep and ensuring the longevity of the brewer.

In summary, the Bunn JDF-4S represents a cutting-edge solution for coffee brewing that prioritizes performance, versatility, and ease of use. With its advanced brewing technology, user-friendly features, and robust construction, it offers an exceptional choice for businesses seeking to serve high-quality coffee efficiently.