Bunn G9WD-RH service manual Problem, Probable Cause, Remedy, volts AC is present across L1 and

Models: G9WD-RH

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TROUBLESHOOTING (Continued)
Problem	Probable Cause		Remedy
Grinder will not start (continued)	5.	Relay	Check that relay contacts close
			when start switch is pressed.
	6.	Motor	With a voltmeter, check that 120
			volts AC is present across L1 and
			L2 on the rear of the motor when
			the Start switch is pressed. If volt-
			age is present, and motor does not
			start, replace motor.
Grinder will not shut off	1.	STOP button	Use “TEST SWITCHES?” menu un-
			der “SERVICE TOOLS?” menu in
			level 1 functions to test STOP but-
			ton.
	2.	Relay	With power removed from the ma-
			chine, check that there is no conti-
			nuity across the relay contacts.

Incorrect weight of coffee dis- pensed

1.Grinder scale requires calibra- tion.

2.Funnel handle touched during grinding.

Refer to GRINDER WEIGHT CALI- BRATION procedure.

14	41451.0001	111909

Image 14

Contents

BUNN-O-MATIC CORPORATION INSTALLATION & OPERATING GUIDEG9WD-RH BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY USER NOTICES CONTENTSINTRODUCTION 00824.0000Grind Pad a ELECTRICAL REQUIREMENTSOPERATING CONTROLS Stop Pad bBurr Adjustment ADJUSTMENTSGRINDING. THIS WILL CAUSE THE INCORRECT WEIGHT OF COFFEE TO BE GROUND COFFEE GRINDINGCLEANING GLOSSARY GRINDER SCALE CALIBRATION BATCH SIZE SETTINGGROUND COFFEE COUNTER COFFEE CALIBRATIONCOMMUNICATING WITH THE GRINDER COMMUNICATING WITH THE GRINDER Continued THREE BATCHES DONEfrom B TEST OUTPUTS NO YES TEST GRIND MOTOR NO YES TEST SWITCHES ? COMMUNICATING WITH THE GRINDER ContinuedLEVEL 2 FUNCTIONS COMMUNICATING WITH THE GRINDER ContinuedProbable Cause TROUBLESHOOTINGProblem Remedyder “SERVICE TOOLS?” menu in Problemthe Start switch is pressed. If volt Use “TEST SWITCHES?” menu unTRANSDUCER SCHEMATIC WIRING DIAGRAM G9WD-RHLOAD 60 HZ