ICE MACHINES Q-Model Service Manual

Section 7Refrigeration SystemQ1600 SERIESRemoteNOTE: These characteristics may vary depending onoperating conditions.Cycle TimesFreeze Time + Harvest Time = Total Cycle TimeQ1800 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 90/32.2-20 to 70 7.5-8.4 8.2-9.2 9.0-10.1-29 to 21.190/32.2 8.0-8.9 8.6-9.6 9.2-10.3100/37.8 8.4-9.3 9.2-10.2 9.7-10.8110/43.3 9.2-10.3 10.0-11.2 10.4-11.6Times in minutes24 Hour Ice ProductionOperating PressuresHarvestTime1 - 2.5Air Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C-20 to 70-29 to 21.11600 1478 137090/32.2 1523 1425 1340100/37.8 1460 1350 1290110/43.3 1343 1250 1213Based on average ice slab weight of 13.0- 14.12lbRatings with JC1895 condenser, dice or half dice cubesAir Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG-20 to 50/-29to 10.0220-255 52-26 100-120 70-8570/21.1 250-270 56-28 110-120 75-9080/26.7 250-275 56-28 110-120 75-9090/32.2 255-285 56-28 110-120 80-90100/37.8 270-310 56-30 115-130 80-95110/43.3 305-350 58-32 120-135 80-100Suction pressure drops gradually throughout the freeze cycleAir Temp.EnteringFreeze TimeWater Temperature °F/°CCondenser°F/°C 50/10.0 70/21.1 90/32.270/21.1 8.5-9.3 9.4-10.3 9.9-10.980/26.7 9.0-9.9 9.8-10.8 10.5-11.590/32.2 9.6-10.5 10.4-11.5 11.1-12.2100/37.8 10.6-11.6 11.5-12.6 12.4-13.6Times in minutes24 Hour Ice ProductionOperating PressuresHarvestTime1-2.5Air Temp.Water Temperature °F/°CEnteringCondenser 50/10.0 70/21.1 90/32.2°F/°C70/21.1 1880 1720 164080/26.7 1780 1650 156090/32.2 1690 1570 1480100/37.8 1550 1440 1350Based on average ice slab weight of 13.0 - 14.12lbRegular cube derate is 7%Air Temp.EnteringCondenser°F/°CFreeze CycleDischargePressurePSIGSuctionPressurePSIGHarvest CycleDischargePressurePSIGSuctionPressurePSIG50/10.0 220-280 40-20 155-190 60-8070/21.1 220-280 40-20 160-190 65-8080/26.7 230-290 42-20 160-190 65-8090/32.2 260-320 44-22 185-205 70-90100/37.8 300-360 46-24 210-225 75-100110/43.3 320-400 48-26 215-240 80-100Suction pressure drops gradually throughout the freeze cyclePart No. 80-1100-3 7-45