1. Introduction
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of your Scotsman Modular Commercial Nugget Ice Maker Machine (Model NH0422A-1+KIT+IOD150-1). This high-capacity system is designed for commercial environments requiring a continuous supply of nugget ice.
The system comprises a modular ice maker head and a counter model ice dispenser, engineered for reliable performance and ease of use. Please read this manual thoroughly before operating the unit to ensure safe and efficient use.

Figure 1: Scotsman Modular Commercial Nugget Ice Maker Machine (top) and Ice Dispenser (bottom).
2. Safety Information
Always adhere to the following safety precautions to prevent injury or damage to the equipment. This appliance must be installed and serviced by qualified personnel only.
- Electrical Safety: Ensure the unit is connected to a properly grounded 115 Volt electrical supply. Do not use extension cords. Disconnect power before any maintenance or cleaning.
- Water Connections: All water connections must comply with local plumbing codes. Use potable water supply only.
- Ventilation: Maintain adequate airflow around the unit. Do not block air vents.
- Placement: Install the unit on a level, stable surface capable of supporting its weight when full of ice.
- Cleaning: Use only recommended cleaning agents and follow cleaning procedures carefully.
3. What's in the Box
Upon unpacking, verify that all components are present:
- Ice Maker Head (Modular Unit)
- Ice Dispenser (Counter Model, 150 lb capacity)
- Mounting Kit (IOD150 Kit for 22" units)
If any items are missing or damaged, contact your supplier immediately.
4. Setup and Installation
Proper installation is crucial for optimal performance and longevity of your ice machine. It is recommended that installation be performed by a certified technician.
- Location Selection: Choose a location with adequate ventilation, away from heat sources, and with access to a potable water supply, drain, and appropriate electrical outlet. Ensure the floor is level and can support the combined weight of the ice machine, dispenser, and ice.
- Unpacking: Carefully remove all packaging materials. Inspect the unit for any shipping damage.
- Dispenser Placement: Position the KBT82 Ice Dispenser on a sturdy counter.
- Ice Maker Head Installation: Mount the modular ice maker head onto the dispenser using the provided IOD150 Kit. This kit is specifically designed for seamless integration with 22" units.
- Water Connection: Connect the ice maker to a cold, potable water supply using approved plumbing lines. Install a water filter if necessary to ensure ice quality and machine longevity.
- Drain Connection: Connect the ice maker and dispenser to an open, indirect drain line, ensuring proper slope for gravity drainage.
- Electrical Connection: Connect the unit to a dedicated 115 Volt, single-phase electrical circuit. Refer to the unit's data plate for specific amperage requirements.

Figure 2: Prodigy Plus control panel, featuring power indicators and a QR code for quick access to information.
5. Operation
Once installed and connected, your Scotsman ice machine is ready for operation.
- Initial Startup: After connecting power and water, the machine will begin its ice-making cycle automatically. The first batch of ice may take longer to produce.
- Ice Production: The unit is capable of producing up to 456 lbs of nugget ice per 24 hours under optimal conditions (70°F air / 50°F water). AHRI certified production is 333 lbs per day at 90°F air / 70°F water.
- Ice Dispensing: To dispense ice, place a container under the chute and activate the lever. The KBT82 dispenser provides convenient access to ice and water.
- KVS Prodigy Vari-Smart Ice Level Control: This intelligent system allows you to program and manage ice bin levels to match your specific ice demand, optimizing energy consumption and ensuring a consistent supply. This feature requires field installation.

Figure 3: Examples of Scotsman nugget ice, known for its chewable texture.

Figure 4: Nugget ice is ideal for carbonated beverages and blended drinks.
6. Maintenance
Regular maintenance ensures the longevity and hygienic operation of your Scotsman ice machine.
- One-Touch Cleaning: The unit features a convenient one-touch cleaning system. Follow the instructions on the control panel or in the detailed service manual for automated cleaning cycles.
- Component Cleaning: The stainless steel auger and evaporator are designed for durability and ease of cleaning. Periodically inspect and clean these components as per the manufacturer's guidelines to prevent mineral buildup and ensure ice quality.
- Air Filter/Condenser Cleaning: For air-cooled models, regularly clean the air filter and condenser fins to maintain efficient operation and prevent overheating. A dirty condenser can significantly reduce ice production.
- Water Filter Replacement: If a water filter is installed, replace cartridges regularly as recommended by the filter manufacturer to ensure optimal water quality and protect the ice machine from scale.

Figure 5: Regularly clean the air filter to ensure proper ventilation and efficient operation.

Figure 6: The durable stainless steel auger requires periodic inspection and cleaning.
7. Troubleshooting
This section addresses common issues you might encounter. For complex problems, contact a qualified service technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| No ice production | No power, water supply off, clogged water filter, dirty condenser. | Check power connection, ensure water supply is on, replace water filter, clean condenser. |
| Low ice production | High ambient temperature, dirty condenser, low water pressure, scale buildup. | Ensure proper ventilation, clean condenser, check water pressure, perform descaling. |
| Ice dispenser not working | Ice chute clogged, dispenser motor issue, power issue to dispenser. | Clear any ice blockages, check power connections. Contact service if motor issue suspected. |
| Unusual noises | Loose components, motor issues, bearing wear. | Inspect for loose parts. For internal component noises, contact a service technician. |
8. Specifications
Key technical specifications for the Scotsman Modular Commercial Nugget Ice Maker Machine (Model NH0422A-1+KIT+IOD150-1):
- Model Number: NH0422A-1+KIT+IOD150-1
- Brand: Scotsman
- Model Name: Prodigy Plus
- Product Dimensions (Ice Maker Head): 24"D x 22.9"W x 23"H
- Weight: Approximately 191 Pounds (combined)
- Ice Production Capacity:
- Up to 456 lbs/day (at 70°F air / 50°F water)
- 333 lbs/day (AHRI certified at 90°F air / 70°F water)
- Ice Dispenser Capacity: 150 lbs (storage)
- Voltage: 115 Volts
- Country of Origin: USA
- Ice Type: Nugget Ice (7/16" x 5/16" x 3/8")

Figure 7: Nugget ice dimensions and common applications.
9. Warranty and Support
Your Scotsman ice machine is backed by the manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Scotsman website.
For technical assistance, service requests, or to inquire about replacement parts, please contact Scotsman customer support. You may also be eligible for a 30-day easy return policy through your retailer, subject to their terms and conditions.
Scotsman Customer Support: Refer to your product registration card or the Scotsman website for contact information.





