Bunn OT Service Manual download pdf (Page 9)

Page 9

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.

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

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