Scotsman Prodigy Elite MC0322 User manual

Service Manual for
Air, Water, and Remote Cooled Modular Cuber
Prodigy Elite® Models MC0322, MC0522,
MC0722, MC0330, MC0530, MC0630, MC0830,
MC1030, MC1448, MC1848, MC2148

January 2022
Page 2
MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
Introduction
This technical manual covers the Prodigy line, excluding the Eclipse remote low side models. All are shipped
with an Installation and User's manual, which can be referred to separately. General installation information is
included in this manual.
Contents
Model Number Description ................ Page 3
Water ................................. Page 4
General Installation - Air or Water Cooled ..... Page 5
General Installation - Air or Water Cooled ..... Page 6
Adjustments............................ Page 7
Water purge setting ...................... Page 8
General Installation - Remote .............. Page 9
General Installation - Remote .............. Page 10
General Installation - Remote .............. Page 11
General Installation - Remote .............. Page 12
General Installation - Remote .............. Page 13
Prodigy Cuber System Information .......... Page 14
Controller Information .................... Page 15
Component Indicator Lights. . . . . . . . . . . . . . . . Page 16
How It Works - Air Cooled ................. Page 17
How It Works - Water Cooled .............. Page 18
How It Works - Remote ................... Page 19
Electrical Sequence - Air or Water Cooled .... Page 20
Electrical Sequence - Remote Cooled. . . . . . . . Page 21
Remote Schematics ..................... Page 22
Electrical Component Details .............. Page 23
Electrical Component Details .............. Page 25
Refrigeration ........................... Page 26
Water System .......................... Page 27
Control Operation ....................... Page 28
Control Safeties......................... Page 29
Control Button Use (from standby) .......... Page 30
Control Button Use - continued ............. Page 31
Thermistor Values ....................... Page 32
Cleaning .............................. Page 33
Critical Maintenance - Water Level Sensor .... Page 34
Critical Maintenance - Ice Thickness Sensor .. Page 35
Critical Maintenance - Spillway ............. Page 36
Diagnostics – Air Cooled .................. Page 37
Diagnostics - Air Cooled .................. Page 38
Low Ice Making Capacity - Air Cooled........ Page 39
Diagnostics – Water Cooled ............... Page 40
Diagnostics - Water Cooled................ Page 41
Low Ice Making Capacity - Water Cooled ..... Page 42
Diagnostics – Remote Air Cooled ........... Page 43
Diagnostics - Remote Air Cooled. . . . . . . . . . . . Page 44
Low Ice Making Capacity - Remote Air Cooled . Page 45
Test Procedures - Sensors ................ Page 46
Ice Thickness Sensor .................... Page 47
Water Level Sensor ...................... Page 48
Temperature Sensors .................... Page 49
Test Procedures - Compressor ........... Page 50
Test Procedures - Fan motor ............. Page 51
Test Procedures - Water Pump ........... Page 52
Test Procedure - Purge valve............. Page 53
Test Procedure - Compressor contactor ...... Page 54
Test Procedures - Pressure switches ........ Page 55
Test Procedures - Liquid Line Solenoid ....... Page 56
Test Procedure - Inlet Water Solenoid Valve ... Page 57
Test Procedure - Harvest Assist ............ Page 58
Repair Section.......................... Page 59
Repair Section.......................... Page 60
Repair Section.......................... Page 61
Repair Section.......................... Page 62
Repair Section.......................... Page 63
Repair Section.......................... Page 64
Repair Section.......................... Page 65
Repair Section.......................... Page 66
Refrigeration Removal and Replacement ..... Page 67
Refrigeration Removal and Replacement ..... Page 68
Refrigeration Removal and Replacement ..... Page 69
Optional add-on control information - KVS .... Page 70
Performance Data ...................... Page 71
Performance Data ...................... Page 72
Performance Data ...................... Page 73
Performance Data ...................... Page 74
Performance Data ...................... Page 75
Performance Data ...................... Page 76
Performance Data ...................... Page 77
Wiring Diagrams ........................ Page 78
Wiring Diagrams ........................ Page 79

MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
January 2022
Page 3
Model Number Description
Example:
• MC0322SA-1A
• MC= modular cuber
• 03= nominal ice capacity in 100s of pounds
• 22= nominal width of cabinet
• S= Cube size. S=small or half dice cube. M=medium or full dice cube
• A=Condenser type. A=air cooled. W=water cooled
• -1=115 60 Hz, -32=208-230 60 Hz, -3= 208-230 3 phase 60 Hz
• A=Series revision code.
Note: In some areas of this manual model numbers may include only the rst ve characters of the
model number, meaning that the cube size, condenser type and voltage di󰀨erences are not critical to
the information listed there.
Scotsman reserves the right to make design changes and/or improvements at any time. Specications and
design are subject to change without notice.
Wiring Diagrams ........................ Page 80
Wiring Diagrams ........................ Page 81
Wiring Diagrams ........................ Page 82
Wiring Diagrams ........................ Page 83
Wiring Diagrams ........................ Page 84
Wiring Diagrams ........................ Page 85
Wiring Diagrams ........................ Page 86
Wiring Diagrams ........................ Page 87
Wiring Diagrams ........................ Page 88
Wiring Diagrams ........................ Page 89
Wiring Diagrams ........................ Page 90
Wiring Diagrams ........................ Page 91
Wiring Diagrams ........................ Page 92
Wiring Diagrams ........................ Page 93
Wiring Diagrams ........................ Page 94
Wiring Diagrams ........................ Page 95
Wiring Diagrams ........................ Page 96
Wiring Diagrams ........................ Page 97
Wiring Diagrams ........................ Page 98
Wiring Diagrams ........................ Page 99
Wiring Diagrams ........................ Page 100
Wiring Diagrams ........................ Page 101
Wiring Diagrams ........................ Page 102
Wiring Diagrams ........................ Page 103
Wiring Diagrams ........................ Page 104
Wiring Diagrams ........................ Page 105
Wiring Diagrams ........................ Page 106
Wiring Diagrams ........................ Page 107
Wiring Diagrams ........................ Page 108
Wiring Diagrams ........................ Page 109

January 2022
Page 4
MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
Water
The quality of the water supplied to the ice machine will have an impact on the time between cleanings and
ultimately on the life of the product. There are two ways water can contain impurities: in suspension or in
solution. Suspended solids can be ltered out. In solution or dissolved solids cannot be ltered, they must be
diluted or treated. Water lters are recommended to remove suspended solids. Some lters have treatment in
them for suspended solids. Check with a water treatment service for a recommendation.
RO water. This machine can be supplied with Reverse Osmosis water, but the water conductivity must be no
less than 10 microSiemens/cm.
Potential for Airborne Contamination
Installing an ice machine near a source of yeast or similar material can result in the need for more frequent
sanitation cleanings due to the tendency of these materials to contaminate the machine. Most water lters
remove chlorine from the water supply to the machine which contributes to this situation. Testing has shown
that using a lter that does not remove chlorine, such as the Scotsman Aqua Patrol, will greatly improve this
situation, while the ice making process itself will remove the chlorine from the ice, resulting in no taste or odor
impact.
Additionally, devices intended to enhance ice machine sanitation, such as the Scotsman Aqua Bullet, can be
placed in the machine to keep it cleaner between manual cleanings.
Water Purge
Cube ice machines use more water than what ends up in the bin as ice. While most water is used during ice
making, a portion is designed to be drained out every cycle to reduce the amount of hard water scale in the
machine. That’s known as water purge, and an e󰀨ective purge can increase the time between needed water
system cleaning.
In addition, this product has the capability to automatically vary the amount of water purged based on the purity
of the water supplied to it. The water purge rate can also be set manually. Adjustments of purge due to local
water conditions are not covered by warranty.

MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
January 2022
Page 5
General Installation - Air or Water Cooled
Location Limitations:
The product is designed to be installed indoors, in a controlled environment. Air cooled models discharge
very warm air into the room out the back. Space must be allowed at the left side and back for air intake and
discharge. Water cooled models discharge warm water into the building’s drain. Space needs to be provided
on both sides and above for service access.
Space Limitations
Note: Although the machine will function, ice capacity of air cooled machines will be signicantly
reduced with minimal clearance at the sides, back and top. Some space is recommended for service
and maintenance purposes on all models.
6" of space at the sides and back is required for adequate operation. To get the most capacity, locate the
machine away from heat producing appliances and heating ducts.
22 and 30 inch: Airow is in the front, out the back
48 inch wide models: Air ow is in the front and left side and out the back.
Environmental Limitations
Minimum Maximum
Air temperature 50oF. 100oF.
Water temperature 40oF. 100oF.
Water pressure 20 psi 80 psi
Power supply – acceptable voltage ranges
Minimum Maximum
115 volt model 104 volts 126 volts
208-230 volt model 198 volts 253 volts
Warranty Information
The warranty statement for this product is provided separately from this manual. Refer to it for applicable
coverage. In general warranty covers defects in material or workmanship. It does not cover maintenance,
corrections to installations, or situations when the machine is operated in circumstances that exceed the
limitations printed above

January 2022
Page 6
MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
General Installation - Air or Water Cooled
Plumbing Requirements
All models require connection to cold, potable water. A hand actuated valve within site of the machine is
required. Air cooled models have a single 3/8” FPT inlet water connection.
Water cooled models have the same inlet tting plus an additional 3/8” FPT condenser inlet water connection.
Water Filters
If connecting to water ltration, lter only the water to the reservoir, not to the condenser. Install a new cartridge
if the lters were used with a prior machine.
All models require drain tubing to be attached to them. Air cooled models have a single ¾” FPT drain tting in
the back of the cabinet. Water cooled models have the same tting plus an additional ½” FPT drain tting in the
back of the cabinet.
Install new tubing when replacing a prior ice machine, as the tubing will have been sized for the old model and
might not be correct for this one.
Note: This NSF listed model has a 1" anti-back ow air gap between the water inlet tube end and the
highest possible reservoir water level, no back ow device is required for the potable water inlet.
Drain Tubing:
Use rigid drain tubes and route them separately – do not Tee into the bin’s drain and, if water cooled, do not
Tee the condenser drain into the reservoir or bin drain.
Vent the reservoir drain. A vertical vent at the back of the drain, extended about 8 – 10” will allow the gravity
drain to empty and also keep any surges during draining from discharging water out the vent..
Horizontal runs of drain tubing need a ¼” fall per foot of run for proper draining. Follow all applicable codes.
Electrical
See the spec sheet or User’s Manual for Minimum Circuit Ampacity or Maximum Fuse Size ratings.
The machine is not supplied with a power cord, one must either be eld installed or the machine hard-wired.
The dataplate on the back of the cabinet details the power requirements, including voltage, phase, minimum
circuit ampacity and maximum fuse size. HACR type circuit breakers may be used in place of fuses. Extension
cords are not permitted. Use of a licensed electrician is recommended.
Electrical connections are made inside the junction box in the back panel of the ice machine.
Follow all applicable local, state and national codes.

MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
January 2022
Page 7
Adjustments
Ice Bridge Thickness
Caution: Do not make the bridge too thin or the machine will not harvest properly. Bridge thickness adjustments
are not covered by warranty.
Shut machine o󰀨.
Access the ice thickness sensor.
Check gap between metal tip and evaporator grid. Standard gap is 7/32 inch. To set 7/32" drill bit between
sensor tip and evaporator to check. Adjust gap using adjustment screw.
Restart unit and check ice bridge. Repeat as needed.
1/8 to 3/16
inch bridge
Too Thin
Too Thick Correct Correct
Small Medium
Adjustment Screw

January 2022
Page 8
MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
Water purge setting
The water purge is factory set to the Automatic setting. The setting can be changed to one of 5 manual settings
or placed on automatic. The purge setting shows in the Code Display.
purge setting 1 - Minimum 2 - Moderate 3 - Standard 4 - Heavy 5 - Maximum A - Automatic
Water Type RO water or
equivalent,
TDS less than
35
Low TDS non
- RO water
Setting for
typical water
High TDS
water
Very high
TDS water,
greater than
256
Any with
conductivity not
less than 10
microSiemens/
cm
To set:
Switch the machine OFF by holding the O󰀨 button in until a number or the letter A shows on the display.
Press and release the On button repeatedly until the number on the display corresponds to the desired setting.
Press and release the O󰀨 switch again to return to the normal control state.
Product Description and Electrical Requirements
See user's manual, dataplate, or spec sheet for Minimum Circuit Ampacity or Maximum Fuse Size
Ratings include the remote condenser motor, as it is designed to be powered by the ice machine. If connecting
remote condenser independently of the ice machine, use the information on the condenser's dataplate for fuse
and wire sizes.

MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
January 2022
Page 9
General Installation - Remote
Location Limitations
This ice system is made up of three parts, the ice making machine, or head; the remote condenser; and the
interconnecting tubing. The ice making machine must be installed indoors, in a controlled environment. Space
must be provided near the machine for service access. The remote condenser may be installed above or below
the ice machine, per the limits stated later in this manual. The remote condenser may be installed outdoors
within the temperature limits listed below. The interconnecting tubing must be installed per the directions stated
in this manual, and the amount of tubing exposed to uncontrolled temperatures must be minimized.
Space Limitations
Although the machine will function with no clearance to the top and sides, some space must be allowed for
service access. Building the machine in with no access will cause higher service cost, in many cases this extra
cost may not be covered by warranty.
Environmental Limitations, ice machine:
Minimum Maximum
Air temperature 50oF. 100oF.
Water temperature 40oF. 100oF.
Water Pressure 20 psi 80 psi
Environmental Limitations, remote condenser
Minimum Maximum
Air temperature -20oF. 120oF.
Power Supply
Minimum Maximum
115 volt model 104 volts 126 volts
208-230 volt model 198 volts 253 volts
Central Condenser Coils
The ice machine may be connected to a central condenser coil. The requirements are:
• Coil – not previously used with mineral oil system. Virgin coil preferred.
• Correct size (internal volume) and capacity (BTUH).
• Includes a headmaster valve for discharge pressure control. Headmaster kit available for certain MAC
condensers, kit number is RCKCME6GX-E.
• Fan motor on all the time or controlled to be on whenever the ice machine is operating.
• Non-Scotsman condensers must have prior Scotsman Engineering approval for warranty coverage to be in
e󰀨ect.
Precharged tubing kits:
The ice making head’s and the remote condenser’s refrigeration circuits must be connected. They are
designed to be connected using precharged refrigerant tubing, supplied in kits of liquid and discharge tubes.
Several lengths are available, order the one that just exceeds the length needed for the site.
10” 25’ 40’ 75’
BRTE10 BRTE25 BRTE40 BRTE75
No additional refrigerant is required. Note: Refrigerant charge is supplied with the ice machine

January 2022
Page 10
MC0322 through MC2148
Air, Water, and Remote Cooled Service Manual
General Installation - Remote
Remote Condenser Location
Use the following for planning the placement of the condenser relative to the ice machine - see illustration on
the following page.
Location Limits - condenser location must not exceed ANY of the following limits:
• Maximum rise from the ice machine to the condenser is 35 physical feet
• Maximum drop from the ice machine to the condenser is 15 physical feet
• Physical line set maximum length is 100 feet.
• Calculated line set length maximum is 150.
Calculation Formula:
• Drop = dd x 6.6 (dd = distance in feet)
• Rise = rd x 1.7 (rd = distance in feet)
• Horizontal Run = hd x 1 (hd = distance in feet)
• Calculation: Drop(s) + Rise(s) + Horizontal Run = dd+rd+hd = Calculated Line Length
Congurations that do NOT meet these requirements must receive prior written authorization from Scotsman.
Do NOT:
• Route a line set that rises, then falls, then rises.
• Route a line set that falls, then rises, then falls.
Calculation Example 1:
The condenser is to be located 5 feet below the ice machine and then 20 feet away horizontally.
5 feet x 6.6 = 33. 33 + 20 = 53. This location would be acceptable
Calculation Example 2:
The condenser is to be located 35 feet above and then 100 feet away horizontally. 35 x 1.7 = 59.5. 59.5 +100 =
159.5. 159.5 is greater than the 150 maximum and is NOT acceptable.
Operating a machine with an unacceptable conguration is misuse and will void the warranty.