Main Fuse....................................................... 46Bin Switch....................................................... 47Water Curtain Removal Notes........................ 49ICE/OFF/CLEAN Toggle Switch..................... 50Ice Thickness Probe (Harvest Initiation)......... 51Ice Thickness Probe Diagnostics ................... 53Diagnosing Ice Thickness Control Circuitry.... 54Water Level Control Circuitry.......................... 56Diagnosing an Ice Machine Head Sectionthat Will Not Run............................................. 63Compressor Electrical Diagnostics................. 64Diagnosing Capacitors ................................... 66Refrigeration SystemRefrigeration System Diagnostics ....................... 71Before Beginning Service ............................... 71Ice Production Check ..................................... 72Installation/Visual Inspection Checklist........... 73Water System Checklist ................................. 74Ice Formation Pattern ..................................... 75Safety Limits ................................................... 77Analyzing Discharge Pressure ....................... 85Analyzing Suction Pressure............................ 88Single Expansion Valve Ice Machines -Comparing Evaporator Inlet andOutlet Temperatures....................................... 92Discharge Line Temperature Analysis............ 96How to Use the Refrigeration SystemOperational Analysis Tables........................... 98Refrigeration System Operational AnalysisTables........................................................... 101Pressure Control Specificationsand Diagnostics................................................. 108Harvest Pressure Regulating (HPR) SystemRemotes Only............................................... 108Headmaster Control Valve ........................... 112Fan Cycle Control(Self-Contained Air-Cooled Models Only) .... 115High Pressure Cutout (HPCO) Control......... 116Refrigeration Tubing Schematics ...................... 117Self-Contained Air- orWater -Cooled Models.................................. 117Remote Models ............................................ 118
