ICE MACHINES Q-Model Service Manual

Refrigeration System Section 7Q450 SERIESRemoteNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeQ600 SERIESSelf-Contained Air-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.EnteringCondenser°F/°CFreeze TimeWater Temperature °F/°C50/10.0 70/21.1 90/32.2HarvestTime-20/-28.9 to70/21.110.6-12.5 12.0-14.0 13.3-15.680/26.7 10.9-12.8 12.3-14.4 13.7-16.090/32.2 11.1-13.1 12.6-14.8 14.1-16.5100/37.8 12.0-14.0 13.7-16.0 15.5-18.0110/43.3 13.3-15.6 15.5-18.0 17.6-20.61-2.570/21.1 7.1-8.4 7.8-9.2 8.6-10.180/26.7 7.8-9.2 8.6-10.1 9.5-11.290/32.2 8.6-10.1 9.5-11.2 10.4-12.2100/37.8 9.5-11.2 10.6-12.5 12.0-14.0Times in minutes1-2.5Times in minutes24 Hour Ice Production24 Hour Ice ProductionAir Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C-20/-28.9 to70/21.1490 440 40080/26.7 480 430 39090/32.2 470 420 380100/37.8 440 390 350110/43.3 400 350 310Based on average ice slab weight of 4.12- 4.75lbRegular cube derate is 7%Ratings with JC0495 condenser, dice or half dice cubesOperating PressuresAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG-20/-28.9 to50/10.0225-245 50-32 175-190 85-10070/21.1 230-250 50-32 175-190 85-10080/26.7 240-260 52-32 180-195 85-10090/32.2 245-270 54-35 185-200 85-100100/37.8 280-310 57-37 190-205 90-105110/43.3 290-325 64-39 190-205 95-110Suction pressure drops gradually throughout the freeze cycleAir Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C70/21.1 690 640 59080/26.7 640 590 54090/32.2 590 540 500100/37.8 540 490 440Based on average ice slab weight of 4.12- 4.75lbRegular cube derate is 7%Operating PressuresAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 195-260 42-22 155-180 75-9570/21.1 220-290 44-22 160-185 85-10080/26.7 220-305 52-22 160-190 90-11090/32.2 250-325 52-23 175-195 95-115100/37.8 280-355 54-30 195-210 95-125110/43.3 300-385 56-32 200-225 100-135Suction pressure drops gradually throughout the freeze cycle7-38 Part No. 80-1100-3