ICE MACHINES Q-Model Service Manual

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Table of Contents (continued)Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17Wiring Diagram Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17Q200/Q280/Q320 - Self Contained - 1 Phase With Terminal Board . . . . . . . 6-18Q280/Q370 - Self Contained - 1 Phase Without Terminal Board . . . . . . . . . 6-19Q320 - Self Contained - 1 Phase Without Terminal Board . . . . . . . . . . . . . . 6-20Q420/Q450/Q600/Q800/Q1000 - Self Contained -1 Phase With Terminal Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21Q420/Q450/Q600/Q800/Q1000 - Self Contained -1 Phase Without Terminal Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22Q800/Q1000 - Self Contained - 3 Phase With Terminal Board . . . . . . . . . . . 6-23Q800/Q1000 - Self Contained - 3 Phase Without Terminal Board . . . . . . . . 6-24Q1300/Q1800 - Self Contained - 1 Phase With Terminal Board . . . . . . . . . . 6-25Q1300/Q1600/Q1800 - Self Contained - 1 Phase Without Terminal Board . 6-26Q1300/Q1800 - Self Contained - 3 Phase With Terminal Board . . . . . . . . . . 6-27Q1300/Q1600/Q1800 - Self Contained - 3 Phase Without Terminal Board . 6-28Q450/Q600/Q800/Q1000 - Remote - 1 Phase With Terminal Board . . . . . . 6-29Q450/Q600/Q800/Q1000 - Remote - 1 Phase Without Terminal Board . . . . 6-30Q800/Q1000 -Remote - 3 Phase With Terminal Board . . . . . . . . . . . . . . . . . 6-31Q800/Q1000 -Remote - 3 Phase Without Terminal Board . . . . . . . . . . . . . . 6-32Q1300/Q1800 - Remote - 1 Phase With Terminal Board . . . . . . . . . . . . . . . 6-33Q1300/Q1600/Q1800 - Remote - 1 Phase Without Terminal Board . . . . . . . 6-34Q1300/Q1800 - Remote - 3 Phase With Terminal Board . . . . . . . . . . . . . . . 6-35Q1300/Q1600/Q1800 - Remote - 3 Phase Without Terminal Board . . . . . . . 6-36Component Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38Main Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38Bin Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38Compressor Electrical Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-40PTCR Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41ICE/OFF/CLEAN Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44Control Board Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-44Electronic Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-45Ice Thickness Probe (Harvest Initiation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47How The Probe Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47Harvest/Safety Limit Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47Freeze Time Lock-In Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47Maximum Freeze Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47Ice Thickness Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47Diagnosing Ice Thickness Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-48Water Level Control Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50Water Level Probe Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50Water Inlet Valve Safety Shut-Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50Freeze Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50Harvest Cycle Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50Diagnosing Freeze Cycle Potable Water Level Control Circuitry . . . . . . . . . 6-51Diagnosing An Ice Machine That Will Not Run . . . . . . . . . . . . . . . . . . . . . . . . . 6-544 Part No. 80-1100-3
Table of Contents (continued)Section 7Refrigeration SystemSequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1Self-Contained Air or Water -Cooled Models . . . . . . . . . . . . . . . . . . . . . . . . 7-1Remote Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3Q1300/Q1600/Q1800 Refrigeration Tubing Schematics . . . . . . . . . . . . . . . 7-6Operational Analysis (Diagnostics) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8Before Beginning Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Ice Production Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9Installation/Visual Inspection Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10Water System Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10Ice Formation Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11Safety Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13Analyzing Discharge PressureDuring Freeze or Harvest Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17Analyzing Suction PressureDuring Freeze Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18Single Expansion Valve Ice Machines -Comparing Evaporator Inlet andOutlet Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20Harvest Valve Temperature Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21Discharge Line Temperature Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22How to Use the Refrigeration SystemOperational Analysis Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24Refrigeration System Operational Analysis Tables . . . . . . . . . . . . . . . . . . . . 7-25Harvest Pressure Regulating(H.P.R.) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-27Headmaster Control Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-29Pressure Control Specifications and Diagnostics . . . . . . . . . . . . . . . . . . . . . . 7-31Fan Cycle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31High Pressure Cut-Out (HPCO) Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-31Cycle Time/24 Hour Ice Production/Refrigerant Pressure Charts . . . . . . . . . 7-32Q200 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32Q280 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33Q320 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34Q370 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35Q420/450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-36Q450 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Q600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-37Q800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-39Q1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40Q1300 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42Q1600 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-43Q1800 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-44Part No. 80-1100-3 5
Page 2: Safety NoticesAs you work on a Q-Se
Page 5 and 6: Table of ContentsSection 1General I
Page 7: HEALTH, SAFETY & THE ENVIRONMENTImp
Page 11 and 12: Section 1General InformationModel N
Page 13 and 14: Section 1General InformationWarrant
Page 15 and 16: Section 2Installation InstructionsG
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Page 35: Section 3MaintenanceComponent Ident
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Page 40 and 41: Maintenance Section 3CLEANING PROCE
Page 42 and 43: Maintenance Section 3AUTOMATIC CLEA
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Page 46 and 47: Maintenance Section 3Water Level Pr
Page 48 and 49: Maintenance Section 3Water Treatmen
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Page 52 and 53: Ice Machine Sequence of Operation S
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Electrical System Section 6REMOTE M
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Electrical System Section 62. REFRI
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Electrical System Section 64. FREEZ
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Electrical System Section 66. HARVE
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Electrical System Section 6REMOTE M
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Electrical System Section 6Freeze S
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Electrical System Section 6Harvest
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Electrical System Section 6Automati
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Electrical System Section 6Q200/Q28
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Electrical System Section 6Q320 - S
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Electrical System Section 6COMPRESS
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Electrical System Section 6Q-Model
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Electrical System Section 6ICE/OFF/
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Electrical System Section 6GeneralQ
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Electrical System Section 6DIAGNOSI
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Electrical System Section 6Water Le
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Electrical System Section 6Problem:
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Electrical System Section 6Diagnosi
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Electrical System Section 6THIS PAG
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Refrigeration System Section 7EVAPO
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Refrigeration System Section 7EVAPO
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Refrigeration System Section 7Q1300
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Refrigeration System Section 7Opera
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Refrigeration System Section 7INSTA
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Refrigeration System Section 73. Ex
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Refrigeration System Section 7Analy
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Refrigeration System Section 7Safet
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Refrigeration System Section 7ANALY
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Refrigeration System Section 7SINGL
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Refrigeration System Section 7DISCH
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Refrigeration System Section 7HOW T
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Refrigeration System Section 7Q and
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Refrigeration System Section 7FREEZ
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Refrigeration System Section 7HEADM
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Refrigeration System Section 7Press
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Refrigeration System Section 7Self-
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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 7REFRI
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Refrigeration System Section 7HFC R
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Refrigeration System Section 7THIS
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