ICE MACHINES Q-Model Service Manual

Refrigeration System Section 7Q1800 SERIESSelf-Contained Water-CooledNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeQ1800 SERIESRemoteNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeAir Temp.Around IceMachine°F/°CFreeze TimeWater Temperature °F/°C50/10.0 70/21.1 90/32.2HarvestTimeAir Temp.EnteringCondenser°F/°CFreeze TimeWater Temperature °F/°C50/10.0 70/21.1 90/32.2HarvestTime70/21.1 8.7-9.6 9.6-10.5 10.8-11.980/26.7 9.0-9.9 9.6-10.6 10.8-11.990/32.2 9.1-10.1 9.7-10.7 10.9-12.0100/37.8 9.2-10.1 9.8-10.7 11.1-12.1Times in minutes1-2.5-20/-28.9 to70/21.19.1-10.0 9.8-10.8 10.7-11.780/26.7 9.3-10.2 10.1-11.1 10.9-12.090/32.2 9.5-10.5 10.3-11.4 11.1-12.2100/37.8 10.1-11.1 11.1-12.2 11.9-13.0110/43.3 11.0-12.1 12.1-13.2 12.7-13.91-2.524 Hour Ice ProductionTimes in minutesAir Temp.Water Temperature °F/°CAround IceMachine 50/10.0 70/21.1 90/32.2°F/°C70/21.1 1840 1690 152080/26.7 1780 1680 152090/32.2 1760 1670 1510100/37.8 1750 1660 1490Based on average ice slab weight of 13.0- 14.12lbRegular cube derate is 7%CondenserWaterConsumptionOperating Pressures90/32.2 Air TemperatureAround Ice MachineWater Temperature °F/°C50/10.0 70/21.1 90/32.2Gal/24 hours 2000 2670 7750Water regulating valve set to maintain 240 PSIG discharge pressureAir Temp.Around IceMachine°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 235-245 36-20 170-190 65-8070/21.1 235-245 38-20 170-190 65-8080/26.7 235-245 40-20 170-190 65-8090/32.2 235-250 42-22 175-190 65-80100/37.8 235-255 44-22 175-190 65-80110/43.3 235-260 46-22 175-190 65-80Suction pressure drops gradually throughout the freeze cycle24 Hour Ice ProductionAir Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C-20/-28.9 to70/21.11770 1650 154080/26.7 1735 1615 151090/32.2 1700 1580 1480100/37.8 1620 1480 1400110/43.3 1500 1380 1320Based on average ice slab weight of 13.0 - 14.12lbRegular cube derate is 7%Ratings with JC1895 condenser, dice or half dice cubesOperating PressuresAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG-20/-28.9 to50/10.0220-250 38-24 160-180 60-8070/21.1 220-260 40-24 170-180 60-8080/26.7 250-270 48-24 175-190 70-9090/32.2 250-280 50-24 180-200 80-90100/37.8 270-300 52-28 205-215 80-95110/43.3 300-350 54-28 205-230 80-100Suction pressure drops gradually throughout the freeze cycle7-46 Part No. 80-1100-3