ICE MACHINES Q-Model Service Manual

Refrigeration System Section 7Q800 SERIESSelf-Contained Air-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeQ800 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 8.9-10.2 9.7-11.1 10.3-11.970/21.1 8.7-10.1 9.5-11.0 10.9-12.580/26.7 9.3-10.7 10.2-11.7 10.9-12.590/32.2 10.3-11.9 11.4-13.1 12.3-14.1100/37.8 12.1-13.8 13.3-15.2 14.4-16.51-2.580/26.7 8.9-10.2 9.7-11.1 11.0-12.790/32.2 9.0-10.3 9.8-11.3 11.2-12.9100/37.8 9.1-10.5 10.0-11.5 11.4-13.11-2.5Times 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/°C70/21.1 800 740 70080/26.7 770 710 67090/32.2 700 640 600100/37.8 610 560 520Based on average ice slab weight of 5.75- 6.50 lbRegular cube derate is 7%Air Temp.Water Temperature °F/°CAround IceMachine 50/10.0 70/21.1 90/32.2°F/°C70/21.1 810 750 67080/26.7 800 740 66090/32.2 790 730 650100/37.8 780 720 640Based on average ice slab weight of 5.75- 6.50lbRegular cube derate is 7%Operating PressuresAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 220-280 31-18 135-180 65-9070/21.1 220-280 32-18 140-180 70-9080/26.7 225-280 36-20 140-180 70-9590/32.2 260-295 38-22 150-200 80-100100/37.8 300-330 40-24 210-225 80-100110/43.3 320-360 44-26 210-240 85-120Suction 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 640 1420 6000Water regulating valve set to maintain 230 PSIG discharge pressureAir Temp.Around IceMachine°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 225-235 33-20 160-185 65-8570/21.1 225-235 34-20 165-185 70-8580/26.7 225-235 34-20 165-185 70-8590/32.2 225-235 36-22 165-185 70-85100/37.8 225-235 36-22 165-185 70-85110/43.3 225-240 38-24 170-190 75-90Suction pressure drops gradually throughout the freeze cycle7-40 Part No. 80-1100-3