IMI Cornelius, Inc. IAC 1230 Operation Manual
ICE MAKER
POCKET GUIDE
“I” SERIES CUBE
ICE MAKERS
IMI CORNELIUS
One Cornelius Place
Anoka, MN 55303
1–800–238–3600
Rev 9/18/95
TD 2023/1/95
TABLE OF CONTENTS
introduction 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Original Owner, End-user responsibility 1. . . . . . . . . . . .
Serial Plate Locations 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model and Serial Number Defined 2. . . . . . . . . . . . . . . . . . . .
Serial Number Defined After January 1, 1995 3. . . . . . . . . .
Electrical Specification 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Condenser 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ICE CAPACITY INFORMATION 11. . . . . . . . . . . . . . . . . . .
Ice Capacity 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ice Production Check 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADJUSTMENT OF ICE BRIDGE THICKNESS 12. . . . . . . .
Ice production capacities and charts 14-29. . . . . . . . . . . .
IAC322/IAC330 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC322/IWC330 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAC522/IAC530 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC522/IWC530 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAC630 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC630 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IRC630 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAC830 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC830 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IRC830 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAC1230 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC1230 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IRC1230 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IAC1448 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IWC1448 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IRC1448 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Component Functions 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Board 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LED Indicators 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LED status indicator chart 32-34. . . . . . . . . . . . . . . . . . . .
Reset Operation 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Selector Switch 34. . . . . . . . . . . . . . . . . . . . . . . .
Stacking Cable 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Test Plug 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dump Cycle Options 35. . . . . . . . . . . . . . . . . . . . . . . . . .
Condenser Fan Cycling Control (Intergal Condenser) 36.
Harvest Safety Termination 36. . . . . . . . . . . . . . . . . . . . .
Circuit Board Diagnosis 36. . . . . . . . . . . . . . . . . . . . . . . .
PAGE
i
TD 202
TABLE OF CONTENTS (CONT’D)
Sensors 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sensor [Thermistor] Diagnosis 38. . . . . . . . . . . . . . . . . . . . . . .
Evaporator Switches 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switch Notes 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Checks 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Regulating Valve 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Pressure Safety Switch 40. . . . . . . . . . . . . . . . . . . . . . . . .
Float Valve with Flow Washer 41. . . . . . . . . . . . . . . . . . . . . . .
Service Stem Valves 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostatic Expansion Valves 41. . . . . . . . . . . . . . . . . . . . . .
diagnosis 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starving TXV - Product Symptoms 42. . . . . . . . . . . . . . . . . . .
Flooding TXV - Product Symptoms 42. . . . . . . . . . . . . . . . . . .
Head Pressure Control Valve [Headmaster} Fan Cycle Switch
Contactor Compressor 44. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor & Starting Component Check-Out Procedure 45
Relay 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Capacitors 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Moisture Contamination 47. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring Diagrams 49-54. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning Procedures 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prep – Cleaning 59. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning the Water System & Evaporator 59. . . . . . . . . . . . . .
Sanitizing Procedures 60. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Remote Units Only) 43. . . . . . . . . . . . . . . . . . . . . .
Potential – 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current – 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE
TD 202
ii
introduction
This guide is published as an aid to the Service Technician. It is not
intended to replace the service manual. In it you will find useful information not found in the service manual. This information will
help you more quickly identify specific problems, however not all
problems or situations may be listed. We appreciate your comments
or suggestions, or if you have a specific problem not addressed in
this guide or service manual.
Please feel free to contact our service department at:
IMI CORNELIUS
One Cornelius Place
Anoka, MN 55303
1–800–554–3526
The warranty on Cornelius icemakers begins on the date of installation, as reported on the warranty registration card to the original
owner/user. If no warranty card is received by the factory, the date
of shipment from the factory will determine the start of the warranty.
Warranty labor will be paid per the labor rate guide and is subject to
change without notice. Call the Service Department for a copy of the
current Labor Rate Guide and/or applicable Warranty Document
Copy.
ORIGINAL OWNER, END-USER RESPONSIBILITY
1. To verify the equipment installation date by the return
of the warranty registration card to the factory within
five days of the installation.
2. To pay freight or handling charge.
3. To pay for service labor and/or parts required to correct improperly installed equipment. Installation must
comply with the installation instructions.
4. To pay for normal maintenance, adjustments and
cleaning.
5. To pay for service labor and/or parts required to correct unit modification or the use of non-approved remote condensers.
6. To pay for service labor and/or parts required because
of neglect, abuse, misuse, accident, fire, flood, freezing or any act of God.
7. To pay for mileage, truck charges, travel time, premium labor for holidays, weekends or after hours
work, flat rate service call charges, miscellaneous tool
charges, use of diagnostic meters or equipment and all
material not listed on the Warranty Time Rate Guide.
Rev 9/18/95
1 TD 2023/1/95
Serial Plate Locations
Exterior: Left side, Lower Front corner.
Interior: Firewall, Front.
Model and Serial Number Defined
IAC 1230
IAC1230
Product
Identifica-
tion
94 A C E 0000
Year
(the first 2
digits
indicates
year of
produc-
tion)
Month of production code will be:
Note: The letter (I) is not used to avoid being confused with the
number(1)
Product Code:
A = Accessory* D = Dispenser (motel/hotel)
B = Bin (storage) E = External condenser (Remote)
C = Cuber F = Flaker
* Any accessory determined to be required to have a serial number.
A=Air
Cooled
Condenser
W=Water
Cooled
R=Remote
Month
Production
A = January G = July
B = February H = August
C = March J = September
D = April K = October
E = May L = November
F = June M = December
Cuber Series
Product
Code
Manufac-
turing
Tracking
Code
30” Wide
3
5
6
8
10
12
14
Cabinet
22 = 22”
Wide
48 = 48”
wide
Unit
Serial
Number
2TD 202 3/1/95
Rev 9/18/95
Serial Number Defined
after January 1, 1995
AF 95 01 BC 0000
Eng
change
level
Engineering change level can be either 1 or 2 digits depending
on the revision level.
Month of production code will be:
01 = January 07 = July
02 = February 08 = August
03 = March 09 = September
04 = April 10 = October
05 = May 11 = November
06 = June 12 = December
Note: The Month must always be 2 digits.
Product Code:
BA = Accessory* BD = Dispenser (motel/hotel)
BB = Bin (storage) BE = External condenser (Remote)
BC = Cuber BF = Flaker
* Any accessory determined to be required to have a serial number.
year Month Product
Code
Unit
Serial
Number
Rev 9/18/95
3 TD 2023/1/95
Electrical Specification
MODEL
UNIT
Volts 115 115 115 115
Phase 1 1 1 1
Hertz 60 60 60 60
No. Wires 2+ground 2+ground 2+ground 2+ground
MIN. CIRCUIT
Amps 20 20 20 20
MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQ)
Amps 20 20 20 20
REFRIGERANT
Type
Weight
(oz)
Weight (g) 482 425 737 652
COMPRESSOR
Volts 115 115 115 115
Phase 1 1 1 1
Hertz 60 60 60 60
LRA 51 51 59 59
RLA 11.5 11.5 11.6 11.6
CONDENSER FAN MOTOR (Air-Cooled System
Y OR
onl
AIR CIRCULATION FAN MOTOR (Water-Cooled
and Remote Systems only)
Volts 115 115 115 115
Phase 1 1 1 1
Hertz 60 60 60 60
Amps
Running
Watts 50 6 50 6
WATER PUMP
Volts 115 115 115 115
Phase 1 1 1 1
Hertz 60 60 60 60
Amps
Running
HP 1/40 1/40 1/40 1/40
IAC322/330IWC322/330IAC522/530IWC522/5
R404a
(HP62)
17 15 26 23
1.7 0.38 1.75 0.38
0.88 0.88 0.76 0.88
R404a
(HP62)
R404a
(HP62)
R404a
(HP 62)
30
4TD 202 3/1/95
Rev 9/18/95
Rev 9/18/95
5 TD 2023/1/95
MODEL IAC630 IWC630 IRC630 IAC830 IWC830 IRC830
UNIT ELEC.
Volts 208/230 208/230 208/230 208/230 208/230 208/230
Phase 1 1 1 1 1 1
Hertz 60 60 60 60 60 60
No. Wires 2+ground 2+ground 2+ground 2+ground 2+ground 2+ground
MIN. CIRCUIT
Amps 20 20 20 20 20 20
MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQUIRED)
Amps 20 20 20 20 20 20
REFRIGERANT
Type R404a(HP62) R404a(HP62) R404a(HP62) R404a(HP 62) R404a(HP 62) R404a(HP 62)
Weight (oz) 43 35 170 55 33 170
Weight (g) 1219 992 4820 1559 936 4820
COMPRESSOR
Volts 230 230 230 230 230 230
Phase 1 1 1 1 1 1
COMPRESSOR (CONT’D)
Hertz 60 60 60 60 60 60
LRA 69 69 69 61 61 61
RLA 8.8 8.8 8.8 12.5 12.5 12.5
CONDENSER FAN MOTOR (Air-Cooled System only) or
AIR CIRCULATION FAN MOTOR (Water-Cooled and Remote Systems only)
Volts 230 230 230 230 230 230
Phase 1 1 1 1 1 1
Hertz 60 60 60 60 60 60
6TD 202 3/1/95
Amps Running 1.09 0.36 0.36 1.09 0.36 0.36
Watts 75 6 6 75 6 6
WATER PUMP
Volts 208/230 208/230 208/230 208/230 208/230 208/230
Phase 1 1 1 1 1 1
Rev 9/18/95
Hertz 60 60 60 60 60 60
Amps Running 0.5 0.5 0.5 0.5 0.5 0.5
HP 1/30 1/30 1/30 1/30 1/30 1/30
All Product Supply Voltages Should Read 208/230 –5%, +10%
Rev 9/18/95
7 TD 2023/1/95
MODEL IAC1230 IWC1230 IRC1230 IAC1448 IWC1448 IRC1448
UNIT ELEC.
Volts 208/230 208/230 208/230 208/230 208/230 208/230
Phase 1 1 1 1 1 1
Hertz 60 60 60 60 60 60
No. Wires 2+ground 2+ground 2+ground 2+ground 2+ground 2+ground
MIN. CIRCUIT
Amps 20 20 20 25 25 25
MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQUIRED)
Amps 20 20 20 25 25 25
REFRIGERANT
Type R404a(HP62) R404a(HP62) R404a(HP62) R404a(HP 62) R404a(HP 62) R404a(HP 62)
Weight (oz) 49 45 210 92 44 250
Weight (g) 1389 1276 5954 2608 1247 7088
COMPRESSOR
Volts 208/230 208/230 208/230 208/230 208/230 208/230
Phase 1 1 1 1 1 1
COMPRESSOR (CONT’D)
Hertz 60 60 60 60 60 60
LRA 96 96 96 95.6 95.6 95.6
RLA 13.5 13.5 13.5 23.9 23.9 23.9
CONDENSER FAN MOTOR (Air-Cooled System only) or
AIR CIRCULATION FAN MOTOR (Water-Cooled and Remote Systems only)
Volts 230 230 230 230 230 230
Phase 1 1 1 1 1 1
Hertz 60 60 60 60 60 60
8TD 202 3/1/95
Amps Running 0.89 X 2 0.36 0.36 0.4 0.36 0.36
Watts 50 W X 2 6 W 6 W 1/15 HP 6 W 6 W
WATER PUMP
Volts 208/230 208/230 208/230 208/230 208/230 208/230
Phase 1 1 1 1 1 1
Rev 9/18/95
Hertz 60 60 60 60 60 60
Amps Running 0.5 0.5 0.5 0.5 0.5 0.5
HP 1/30 1/30 1/30 1/30 1/30 1/30
All Product Supply Voltages Should Read 208/230 –5%, +10%
MODEL IRC630 IRC830. IRC1230 IRC1448
UNIT
Volts 230 230 230 230
Phase 1 1 1 1
Hertz 60 60 60 60
No. Wires 2+ground 2+ground 2+ground 2+ground
MIN. CIRCUIT
Amps 20 20 20 25
MAX FUSE SIZE (HVAC CIRCUIT BREAKER REQUIRED)
Amps 20 20 20 25
REFRIGERANT
Type
Weight
(oz)
Weight (g) 4820 4820 5954 7088
COMPRESSOR
Volts 230 230 230 230
Phase 1 1 1 1
Hertz 60 60 60 60
LRA 69 61 96 95.6
RLA 8.8 12.5 13.5 23.9
AIR CIRCULATION FAN MOTOR
Volts 230 230 230 230
Phase 1 1 1 1
Hertz 60 60 60 60
Amps
Running
Watts 6 6 6 6
WATER PUMP
Volts 230 230 230 230
Phase 1 1 1 1
Hertz 60 60 60 60
Amps
Running
HP 1/30 1/30 1/30 1/30
R404a
(HP62)
170 170 210 250
0.36 0.36 0.36 0.36
0.5 0.5 0.5 0.5
R404a
(HP62)
R404a
(HP62)
R404a
(HP 62)
Rev 9/18/95
9 TD 2023/1/95
Remote Condenser
MODEL CR800 CR1200 CR1400
Volts 230 230 230
Phase 1 1 1
Hertz 60 60 60
Amps 1.0 1.0 1.0
Output, HP 1/6 1/6 1/6
Max. fuse size, Amps (HVAC
circuit breaker
required)
20 20 20
10TD 202 3/1/95
Rev 9/18/95
ICE CAPACITY INFORMATION
Ice Capacity
Ice capacity of any ice maker is affected by many operating conditions, such as water and air temperature and location factors. Please
review the capacity tables in this manual for average 24–hour capacity under various conditions.
NOTE: All printed capacity ratings are 10% except 50 HZ
units these products have 12% increase in cycle time
and capacity decrease of approximately 17%.All
printed capacity ratings are 10% except 50 HZ
units these products have 12% increase in cycle time
and capacity decrease of approximately 17%.
Ice Production Check
If air cooled, take air temperature at the intake of the condenser, 2I
from the condenser fins.. Incoming water temperature at the outlet
of the “float” valve.*
Cycle time (CT) = freeze time plus harvest time, in minutes and seconds. 1440 divided by CT = number of cycles per 24 hours.
Measure weight of ice from one cycle in pounds and fractions of a
pound.
Example: Weight/cycle x cycles/day = total production/24 hrs.
* If water cooled be certain water regulator valve is set to maintain
300/310 PSI head pressure.
Compare to the production tables.
Rev 9/18/95
11 TD 2023/1/95
ADJUSTMENT OF ICE BRIDGE
THICKNESS
TOP ROW
3/8” - 5/8” DIM-
PLE
CENTER
1/8” BRIDGE
BOTTOM 2
ROWS
3/16” - 1/4”
BRIDGE
For optimum ice production and maximum cube separation, the ice
connecting the individual cubes should be a minimum of 1/8”
(.32cm) thick at the center area of the ice waffle.
BRIDGE 1/8I (0.32 CM)
It is normal for the ice slab to be slightly thicker at the bottom and
taper off in a slight wedge pattern at the top. The top row of cubes
must have a complete pattern of ice on all four sides and the back
wall. Remember, when you operate the product with the panels off
during testing the additional heat at the top of the evaporator will
cause thinner ice at the top than when the panels are in place.
12TD 202 3/1/95
Rev 9/18/95
Should a different thickness of the bridge be desired, it will be required to adjust the ice thickness “POT”, located on the circuit
board, as follows:
1. Thinner Bridge – turn the ice thickness “pot” adjustment screw CW one full turn. Allow two cycles
before determining if additional adjustments are required.
2. Thicker Bridge – turn the ice thickness “pot” adjusting
screw CCW one full turn. Allow two cycles before
determining if additional adjustments are required.
NOTE: Never judge the thickness of the ice from the first
batch of the ice produced – the first cycle is a bal-
ance cycle. Always wait for the second cycle before
making any adjustments.
Rev 9/18/95
13 TD 2023/1/95
IAC322/IAC330
AMBIENT
TEMP
_F
70 50 200 39 9:5 150 105 1:1 2.4 325
80 70 228 42 12:4 160 110 0:9 2.4 260
14TD 202 3/1/95
90 70 267 44 14:3 183 133 0:7 2.5 240
90 80 270 45 15.1 181 130 0.7 2.4 220
100 70 299 47 19:8 199 142 0:6 2.8 200
Rev 9/18/95
WATER
TEMP
_F
ICE PRODUCTION CAPACITIES AND CHARTS
FREEZE CYCLE HARVEST CYCLE
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
AVERAGE
ICE
WEIGHT
lb/Cycle
AVERAGE
ICE
WEIGHT
lb/day
IWC322/IWC330
Rev 9/18/95
15 TD 2023/1/95
AMBIENT
TEMP
_F
WATER
TEMP
_F
HEAD
PRESSURE
Psig
FREEZE CYCLE HARVEST CYCLE
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
AVERAGE
ICE
WEIGHT
lb/Cycle
70 50 300 40 12:1 143 103 0:9 2.8 310
80 70 300 42 15:3 160 116 1:1 2.8 245
90 70 300 43 16:2 160 118 1:2 2.9 240
90 80 303 44 16.4 173 120 1.1 2.8 230
100 70 300 44 16:3 160 117 1:3 2.6 215
AVERAGE
ICE
WEIGHT
lb/day
IAC522/IAC530
AMBIENT
TEMP
16TD 202 3/1/95
100 70 320 46 20:9 220 120 0:6 5.2 350
Rev 9/18/95
FREEZE CYCLE HARVEST CYCLE
WATER
_F
TEMP
_F
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
AVERAGE
ICE
WEIGHT
lb/Cycle
AVERAGE
ICE
WEIGHT
lb/day
70 50 220 38 12:5 155 95 1.0 5.1 540
80 70 250 42 14:6 175 111 0:9 4.8 450
90 70 275 41 17:4 195 120 0:7 5.1 405
90 80 290 45 17.9 200 120 0.6 5.0 387
IWC522/IWC530
Rev 9/18/95
17 TD 2023/1/95
AMBIENT
TEMP
_F
WATER
TEMP
_F
HEAD
PRESSURE
Psig
FREEZE CYCLE HARVEST CYCLE
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
HEAD
PRESSURE
Psig
SUCTION
PRESSURE
Psig
CYCLE
TIME
Min:Sec
AVERAGE
ICE
WEIGHT
lb/Cycle
70 50 323 44 11:3 156 106 1:3 4.3 490
80 70 327 45 13:7 168 115 1.2 4.4 425
90 70 326 45 13:8 173 117 1:1 4.3 420
90 80 328 47 15.2 184 127 1:1 4.3 384
100 70 327 45 13:9 175 119 1:1 4.3 415
AVERAGE
ICE
WEIGHT
lb/day
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