Scotsman EH222 D with ECC Condensing Unit - Manuel (Page 24)

EH222 D and Condensing Unit
Remote Low Side Cuber User Manual
October 2014
Page 24
Operational Characteristics 800 lb system
Cycle Times @ Condenser Temp/Cabinet Temp/Water Temp in degrees F.
-20/50/40 70/70/50 90/90/70 120/110/100
Freeze 9 to 10 minutes 10 to 12 minutes 13 to 15 minutes 19 to 21 minutes
Harvest 2 to 3 minutes 1 to 1.5 minutes 1 to 1.5 minutes .5 to 1 minute
System Pressures @ Condenser Temp/Cabinet Temp/Water Temp in degrees F
-20/50/40 70/70/50 90/90/70 120/110/100
Suction at head, end of Freeze 26 to 27 PSIG 26 to 31 PSIG 26 to 31 PSIG 30 to 35 PSIG
Suction at head, Harvest - Peak 88 PSIG 85 to 105 PSIG 105 to 125 PSIG 140 t0 160 PSIG
Discharge at Condensing Unit:
Freeze - 5 minutes in
217 PSIG 230 to 250 PSIG 250 to 270 PSIG 330 to 350 PSIG
Operational Characteristics 1000 lb system
Cycle Times @ Condenser Temp/Cabinet Temp/Water Temp in degrees F.
20/70/40 70/70/50 90/90/70 120/110/100
Freeze 7 to 8 minutes 8 to 9 minutes 10 to 11 minutes 16 to 18 minutes
Harvest 2 to 3 minutes 1 to 1.5 minutes 1 to 1.5 minutes .5 to 1 minute
System Pressures @ Condenser Temp/Cabinet Temp/Water Temp in degrees F
-20/50/40 70/70/50 90/90/70 120/110/100
Suction at head, end of Freeze 22 PSIG 26 to 31 PSIG 27 to 32 PSIG 30 to 35 PSIG
Suction at head, Harvest - Peak 88 PSIG 85 to 105 PSIG 90 to 110 PSIG 140 to 160 PSIG
Discharge at Condensing Unit:
Freeze - 5 minutes in
219 PSIG 230 to 250 PSIG 240 to 250 PSIG 345 to 380 PSIG
Below information applies to both size systems:
Headmaster maintains a minimum discharge pressure during freeze of 217 PSIG + 25, -15 PSIG.
CPR Valve Setting: 55 - 60 PSIG.
Note: CPR allows a maximum low side pressure at the compressor. Maximum only occurs during harvest.
Refrigerant Charge
• 800: 192 oz.
• 1000: 224 oz
Compressor Amps, 800 model
• Single Phase - 6 to 8 Three Phase - 5 to 7
Compressor Amps, 1000 model
• Single Phase - 8 to 9, Three Phase - 6.3 to 5.2
Batch Weight: 8 lb
Discharge Pressure Cut Out Switch
• Cuts Out at: 450 PSIG Resets at: 350 PSIG