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CONTENTS Introduction .............................................................................. 2 Warranty ................................................................................... 2 User Notices ............................................................................. 3 Electrical Requirements ............................................................ 4 Operating Controls .................................................................... 4 Initial Set-Up .................
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10854 030300 7
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E N I B F U ADJUSTMENTS The grind can be set from fine to very coarse. The grind may be adjusted for use in most commercial coffee brewers. The following procedures should be used to make adjustments. NOTE - On DG-2 grinders a change in the burr adjustment will also change the amount dispensed. Any adjust- ment to the burrs should be followed by an adjustment of the timer, Burr Adjustment 1. Unplug the grinder and empty all beans from the hopper(s). 2. Plug-in the grinder, place funnel with fi
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Coffee Weight/Timer Settings Approx. 4.0 seconds per ounce, Medium Roast, Drip Grind. Approx. 5.5 seconds per ounce, Dark Roast, Drip Grind. Time will vary depending on bean density & grind size. Check samples by weight. DIGITAL CONTROL DISPLAY ASSEMBLY FUNCTION LIST - WDG-2 FUNCTION NO. FUNCTION RANGE MIN. MAX. Place funnel with filter into rails, press (Func) button to advance to Function One. 1. When entering this function, load sensor is tared. To gain ac
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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 appli
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Grinder will not start. (cont.) 5. Motors Refer to Service - Motors for testing pro- cedures. See page 14. 6. Fuse Refer to Service - Fuse for testing pro- cedures. See page 20. Grinder will not shut off. A) Place the switch in the “OFF" upper 1. Off/On/Start switch position. (B) Refer to Service - Off/On/Start Switch for testing procedures. See page 13. 2. Timer Refer to Service - Timer for testing pro- cedures. See page 16. Begin each grin
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TROUBLESHOOTING (cont.) Problem Probable Cause Remedy LED will not come on when motor is 1. No power Check timer and for loose connections. running. 2. Faulty LED Refer to Service - LED. See page 21. Weigh control assembly leaking oil. Replace - See removal and replacement WDG-2 page 23 Incorrect amount of coffee. WDG-2 Check function list on setting the weight to be ground (page 8), if settings are ok replace weigh control assembly. See page 23 for removal and replacement. WDG-2 DIGITAL DISPLAY
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CAUTION PERSONAL INJURY HAZARD. KEEP FINGERS AND FOREIGN OBJECTS OUT OF HOPPER OR CHUTE OPENING. SERVICE This section provides procedures for testing and replacing various major components used in this grinder should service become necessary. Refer to Troubleshooting for assistance in determining the cause of any problem. WARNING Use only on a properly protected circuit capable of the rated load. Electrically ground the chassis. Follow national/local electrical codes. Do not use near combustib
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the switch. SERVICE (cont.) 4. Check for continuity across the terminals on the left side of the switch when it is in the center "ON" position. Continuity must not be present in the upper "OFF" position. If continuity is present as described, reconnect the wires, the switch is operating properly. If continuity is not present as described, replace the switch. Removal and Replacement: 1. Remove all wires from the switch terminals. P739 2. Compress the clips inside the front of the hous- ing and g
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SERVICE (cont.) Hopper Selector Switch (cont.) PNK TO OPTIONAL MULTISET SWITCH PNK TO OFF/ON/ START SWITCH Test Procedure: 1. Disconnect grinder from the power supply. YEL TO J1- 1 2. Remove all wires from the switch terminals. BLU TO RIGHT MOTOR 3. Place the selector switch in the left position. 4. Check for continuity across the center and right terminals on the rear of the switch. VIO TO J4 - 3 5. Continuity must not present across the center WHI/ BLU TO LEFT MOTOR and left terminals on the
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SERVICE (cont.) Removal and Replacement: Motor (cont.) 1. Disconnect red, black and blue wires from the Test Procedure: motor to be removed from the motor circuit as- 1. Disconnect grinder from the power supply. sembly (1). 2. Remove upper front inspection panel. 2 Loosen the two #10-32 slotted head screws (2) 3. Remove the two 1/4"-20 screws (A) holding the attaching motor circuit assembly (1) to motor front cover (B). mounting bracket (5). 4. Remove load disc (C) from burr auger rotor/as- 3.
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SERVICE (cont.) Timer - DG-2 (cont.) 10. Disconnect grinder from the power source. Test Procedure: If voltage is present as described, proceed to #11. 1. Disconnect grinder from the power source. If voltage is not present as described, replace timer 2. Slide timer with wires connected from housing. and motor circuit board with part number 3. Place the hopper selector switch in the left posi- 25725.1000.On grinders prior to S/N DG00002660 tion. also order main wiring harness 25762.0001. 4. Discon
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