ICE MACHINES Q-Model Service Manual

Refrigeration System Section 7Q370 SERIESSelf-Contained Air-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeQ370 SERIESSelf-Contained Water-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeAir Temp.EnteringCondenser°F/°CFreeze TimeWater Temperature °F/°C50/10.0 70/21.1 90/32.2HarvestTimeAir Temp.Around IceMachine°F/°CFreeze TimeWater Temperature °F/°C50/10.0 70/21.1 90/32.2HarvestTime70/21.1 10.3-11.7 11.7-13.4 12.6-14.470/21.1 10.3-11.7 11.0-12.5 12.2-13.980/26.7 11.3-12.9 12.6-14.4 13.9-15.890/32.2 12.9-14.7 13.9-15.8 15.4-17.6100/37.8 14.5-16.5 16.1-18.4 17.3-19.71-2.580/26.7 10.6-12.1 11.3-12.9 12.6-14.490/32.2 11.0-12.5 11.7-13.4 13.1-14.4100/37.8 11.3-12.9 12.2-13.9 13.6-15.51-2.5Times in minutesTimes in minutes24 Hour Ice Production24 Hour Ice ProductionAir Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C70/21.1 360 320 30080/26.7 330 300 27590/32.2 295 275 250100/37.8 265 240 225Based on average ice slab weight of 2.94 - 3.31lbAir Temp.Water Temperature °F/°CAround IceMachine°F/°C 50/10.0 70/21.1 90/32.270/21.1 360 340 31080/26.7 350 330 30090/32.2 340 320 290100/37.8 330 310 280Based on average ice slab weight of 2.94 - 3.31lbOperating PressuresAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 200-250 60-34 145-165 75-9570/21.1 215-250 60-36 150-170 85-10080/26.7 250-290 65-38 165-185 90-11090/32.2 260-330 70-40 175-195 100-120100/37.8 300-380 80-41 195-220 130-150110/43.3 310-390 80-42 200-225 135-155Suction pressure drops gradually throughout the freeze cycleCondenserWaterConsumptionOperating Pressures90/32.2 Air TemperatureAround Ice MachineWater Temperature °F/°C50/10.0 70/21.1 90/32.2Gal/24 hours 220 490 3700Water regulating valve set to maintain 230 PSIG discharge pressureAir Temp.Around IceMachine°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 225-235 60-32 150-170 85-10070/21.1 225-235 60-33 150-170 85-10580/26.7 225-240 65-36 155-175 90-11090/32.2 225-240 68-38 155-175 90-110100/37.8 235-260 75-40 175-200 100-120110/43.3 240-265 85-40 185-205 105-125Suction pressure drops gradually throughout the freeze cycle7-36 Part No. 80-1100-3