Manitowoc Q450 Service Technician's Handbook

Also see for Marine Q 1000: Use and care manual Installation instructions Service manual

Contents

Manitowoc Q450 Service Technician's Handbook Manual pdf 132 page image

ñ122ñQ280 Series - Self-Contained Air-CooledCharacteristics may vary depending on operating conditions.CYCLE TIMESFreeze Time + Harvest Time = Total Cycle Time24 HOUR ICE PRODUCTIONOPERATING PRESSURESAir Temp.EnteringCondenser∞F/∞CFreeze TimeHarvestTimeTimes in minutesWater Temperature ∞F/∞C50/10.0 70/21.1 90/32.270/21.1 10.6-12.5 11.8-13.8 12.6-14.71.0-2.580/26.7 11.5-13.5 12.8-15.0 13.8-16.190/32.2 12.6-14.7 14.1-16.5 15.2-17.8100/37.8 14.5-16.9 16.5-19.3 18.0-21.0Air Temp. EnteringCondenser ∞F/∞CWater Temperature ∞F/∞CBased on average ice slab weight of 2.44 - 2.81 lb.Regular cube derate is 7%50/10.0 70/21.1 90/32.270/21.1 290 265 25080/26.7 270 245 23090/32.2 250 225 210100/37.8 220 195 180Air Temp.EnteringCondenser∞F/∞CFreeze Cycle Harvest CycleDischargePressurePSIGSuctionPressurePSIGSuction pressure drops gradually throughout the freeze cycleDischargePressurePSIGSuctionPressurePSIG50/10.0 195-250 60-20 150-190 70-9070/21.1 195-250 60-20 150-190 70-9080/26.7 220-280 60-26 180-220 70-9090/32.2 250-310 66-30 190-220 80-100100/37.8 280-350 70-32 220-250 80-110110/43.3 310-390 85-40 250-270 80-120