ICE MACHINES Q-Model Service Manual

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Electrical System Section 6Diagnosing An Ice Machine That Will Not Run! WarningHigh (line) voltage is applied to the control board(terminals #55 and #56) at all times. Removingcontrol board fuse or moving the toggle switch toOFF will not remove the power supplied to thecontrol board.Step Check Notes1 Verify primary voltage supply to ice Verify that the fuse or circuit breaker is closed.machine.2 Verify the high-pressure cutout is closed. The H.P.C.O. is closed if primary power voltage is present at terminals#55 and #56 on the control board.3 Verify control board fuse is OK. If the bin switch light functions, the fuse is OK.4 Verify the bin switch functions properly. A defective bin switch can falsely indicate a full bin of ice.5 Verify ICE/OFF/CLEAN toggle switch A defective toggle switch may keep the ice machine in the OFF mode.functions properly.6 Verify low DC voltage is properly Loose DC wire connections may intermittently stop the ice machine.grounded.7 Replace the control board. Be sure Steps 1-6 were followed thoroughly. Intermittent problems arenot usually related to the control board.NOTE: Refer to wiring diagram on Page 6-55 for component and sequence identification.6-54 Part No. 80-1100-3
Section 6Electrical SystemQ0420/Q0450/Q0600/Q0800/Q1000 - SELF CONTAINED -1 PHASE WITH TERMINAL BOARDTB35L1HIGH PRESCUTOUTTB32ICE THICKNESS PROBE4CONTACTORCONTACTS3WATER LEVEL PROBENOT USEDCAUTION: DISCONNECT POWER BEFORE WORKING(64)(66)ON ELECTRICAL CIRCUITRY.DIAGRAM SHOWN DURING FREEZE CYCLE(55)2BIN SWITCH6(62)5(63)*OVERLOAD(65)R24135TRANS.1C1F1GCFUSE (7A)LOW D.C.VOLTAGEPLUG(67)(66)S1COMPRESSOR(62)(49)(47)(61)(60)(20)TOGGLE SWITCH(68) ICE(69)OFF(58)(57)CLEAN LIGHTTB31TB37WATER LEVEL LIGHTBIN SWITCH LIGHT(56)(21)HARVESTSOLENOID(59)(73)(76)HARVEST LIGHT/SAFETY LIMIT CODE LIGHTCLEANRUN CAPACITORSEE SERIAL PLATE FOR VOLTAGEWATERVALVE(77)DUMPSOLENOID(98)INTERNAL WORKINGVIEW(22)(81)CONTACTORCOILR R(46) (50)(99)WATERPUMPTERMINATES ATPIN CONNECTION(74)(75)VIEW FOR WIRING686662(80)6769L2 (N)TB30TB30TB30TB30TB30TB35(42)L1TB33(48) (45)(51)PTCR(52) (85) (86) (53)TB34FAN CYCLE CONTROLRUN CAPACITOR**FAN MOTOR(AIR COOLED ONLY)TB30SV2071Part No. 80-1100-3 6-55
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Safety NoticesAs you work on a Q-Se
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Table of ContentsSection 1General I
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HEALTH, SAFETY & THE ENVIRONMENTImp
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Table of Contents (continued)Sectio
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Section 1General InformationModel N
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Section 3MaintenanceComponent Ident
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Maintenance Section 33. Shine a fla
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Maintenance Section 3CLEANING PROCE
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Maintenance Section 3AUTOMATIC CLEA
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Maintenance Section 3Water Dump Val
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Maintenance Section 3Water Level Pr
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Maintenance Section 3Water Treatmen
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Maintenance Section 3THIS PAGE INTE
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Ice Machine Sequence of Operation S
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Ice Machine Sequence of Operation S
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Water System Ice Making Sequence of
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Electrical System Section 6REMOTE M
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Refrigeration System Section 7Self-
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Refrigeration System Section 7HEAT
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Refrigeration System Section 7HEAT
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Refrigeration System Section 7Mild
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Refrigeration System Section 7SV140
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Refrigeration System Section 7THIS
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ICE MACHINES Q-Model Service Manual

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