Bunn OT - Troubleshooting

Page 8
Problem
Equipment will not operate.
Brew cycle will not start.
Probable Cause
1. No power or incorrect voltage
1. No water
2. Water Strainer
3. Flow Control
Remedy
(A) Connect the brewer to the power
source.
(B) Check the terminal block for the
proper voltages.
(C) Check circuit breaker/fuse.
Check plumbing and shut-off
valves.
(A) Direction of flow arrow must be
pointing towards brewer.
(B) Remove the strainer and check
for obstructions. Clear or replace.
(A) Direction of flow arrow must be
pointing away from the solenoid.
(B) Remove the control and check
for obstructions. Clear or replace.
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qualiedserviceperson-
nel.
• Allelectriccomponentshave120voltacvoltageontheirterminals.Shortingofterminalsortheapplication
of external voltages may result in equipment failure.
• Intermittentoperationofelectronicequipmentisunlikely.Component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ttings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.
• Thisbrewerisheatedatalltimesunlessdisconnectedfromthepowersource.Keepawayfromcombus-
tibles.
WARNING
• Exerciseextremecautionwhenservicingelectricalequipment.
• Disconnectthebrewerfromthepowersourcewhenservicing,exceptwhenelectricaltestsarespecied.
• Followrecommendedserviceprocedures
• Replaceallprotectiveshieldsorsafetynotices
32440 121699
Part II