Bunn CDS-3, CDS-2 service manual Troubleshooting, Problem, Probable Cause

TROUBLESHOOTING

A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department.

•Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.

•All electronic components have 120 volt ac and low voltage dc potential on their terminals. Shorting of terminals or the application of external voltages may result in board failure.

•Intermittent operation of electronic circuit boards is unlikely. Board failure will normally be permanent. If an intermittent condition is encountered, the cause will likely be a switch contact or a loose connection at a terminal or crimp.

•Solenoid removal requires interrupting the water supply to the valve. Damage may result if solenoids are energized for more than ten minutes without a supply of water.

•The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened. This will help to avoid twists and kinks in the tubing.

•Make certain that all plumbing connections are sealed and electrical connections tight and isolated.

•Keep away from combustibles.

WARNING – • Exercise extreme caution when servicing electrical equipment.

•Unplug the dispenser when servicing, except when electrical tests are specified.

•Follow recommended service procedures

•Replace all protective shields or safety notices

PROBLEM PROBABLE CAUSE REMEDY

CDS and Powder Auto-Fill do not run - Main power indicator on CDS drawer front OFF

Product level in CDS is lower than level Probe - CDS running; Powder Auto-Fill door lamp is OFF

Product level in CDS is lower than level Probe - CDS running; Powder Auto-Fill door lamp flashes ON and

OFF

1.CDS power cord disconnected or main power switch in 0 position.

1.The CDS DAY/NIGHT switch in the NIGHT position.

2.The CDS DAY/NIGHT timer in the NIGHT position.

3.Powder Auto-Fill power cord dis- connected.

4.Powder Auto-Fill main power switch in OFF position.

5.Powder Auto-Fill door is open.

1. Low product in Powder Auto-Fill.

Check that the power cord is con- nected to proper electrical source and that the CDS main power switch is in the 1 position.

1.The CDS DAY/NIGHT switch should be in the DAY position.

2.Reprogram the CDS DAY/NIGHT timer.

3.Check that the Powder Auto-Fill is plugged into the back of the CDS auger motor cover.

4.Select the ON position of the main power switch.

5.The Powder Auto-Fill door should be closed securely.

Remove hopper and fill with pow- dered mix.

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