ICE MACHINES Q-Model Service Manual

Section 7Refrigeration SystemCycle Time/24 Hour Ice Production/Refrigerant Pressure ChartsQ200 SERIESSelf-Contained Air-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeAir Temp.EnteringFreeze TimeWater Temperature °F/°CCondenser°F/°C 50/10.0 70/21.1 90/32.270/21.1 11.5-13.5 13.8-16.1 15.2-17.880/26.7 13.8-16.1 15.6-18.2 17.0-19.890/32.2 16.1-18.7 18.6-21.6 20.5-23.8100/37.8 19.8-23.0 23.6-27.4 25.5-29.6Times in minutes24 Hour Ice ProductionOperating PressuresHarvestTime1.0-2.5Air Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C70/21.1 270 230 21080/26.7 230 205 19090/32.2 200 175 160100/37.8 165 140 130Based on average ice slab weight of 2.44 - 2.81 lbRegular cube derate is 7%Air Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 195-260 60-28 120-190 85-11070/21.1 195-260 60-28 120-190 85-11080/26.7 210-270 65-28 160-190 90-11090/32.2 240-290 70-30 190-210 100-120100/37.8 270-330 70-35 220-240 120-140110/43.3 310-390 85-40 250-270 120-150Suction pressure drops gradually throughout the freeze cycleQ200 SERIESSelf-Contained Water-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeAir Temp.Around IceFreeze TimeWater Temperature °F/°CMachine°F/°C 50/10.0 70/21.1 90/32.270/21.1 11.5-13.5 12.8-15.0 14.5-16.980/26.7 12.0-14.1 13.5-15.7 15.2-17.890/32.2 12.6-14.7 14.1-16.5 16.1-18.7100/37.8 13.1-15.4 14.8-17.3 17.0-19.8Times in minutes24 Hour Ice ProductionOperating PressuresHarvestTime1-2.5Air Temp.Water Temperature °F/°CAround IceMachine 50/10.0 70/21.1 90/32.2°F/°C70/21.1 270 245 22080/26.7 260 235 21090/32.2 250 225 200100/37.8 240 215 190Based on average ice slab weight of 2.44 - 2.81 lbRegular cube derate is 7%CondenserWaterConsumption90/32.2 Air TemperatureAround Ice MachineWater Temperature °F/°C50/10.0 70/21.1 90/32.2Gal/24 hours 240 480 2100Water regulating valve set to maintain 230 PSIG discharge pressureAir Temp.Around IceMachine°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 225-235 60-28 170-200 90-11070/21.1 225-235 60-28 170-200 90-11080/26.7 225-240 60-28 175-205 90-11090/32.2 225-245 65-30 175-205 90-115100/37.8 225-250 70-32 180-210 90-115110/43.3 225-260 75-34 185-215 90-120Suction pressure drops gradually throughout the freeze cyclePart No. 80-1100-3 7-33