MDT6N90 - Ice Maker Scotsman - Free user manual and instructions
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| Product Type | Modular Ice Maker |
| Brand | Scotsman |
| Model | MDT6N90 |
| Ice Production | Up to 90 lbs (40.8 kg) per day |
| Ice Type | Half Dice or Full Dice (crescent cube) |
| Storage Bin Capacity | 40 lbs (18.1 kg) with optional bin |
| Dimensions (W x D x H) | 22" x 24" x 24" (559 x 610 x 610 mm) |
| Weight | 95 lbs (43 kg) |
| Power Supply | 115V / 60Hz / 1-phase, 6.5A |
| Refrigerant | R-134a, 13.4 oz (380 g) |
| Condenser Type | Air-cooled |
| Controls | Electronic with digital display and diagnostics |
| Water Inlet | 3/8" female flare fitting |
| Drain | 1/2" NPT female |
| Ice Harvest Cycle | Hot gas harvest, approximately 8-15 minutes per batch |
| Self-Cleaning Cycle | Built-in with indicator light |
| Warranty | 3 years parts and labor on ice machine; 5 years on compressor |
| Maintenance | Monthly cleaning with approved Scotsman cleaner; quarterly condenser coil cleaning |
| Safety Certifications | NSF, UL, cUL |
| Accessories Included | Ice scoop, drain hose, water strainer |
| Repairability | Modular design with serviceable components; control board, compressor, water pump available as spare parts |
Frequently Asked Questions - MDT6N90 Scotsman
How do I clean my Scotsman MDT6N90 ice maker?
Perform a self-cleaning cycle using Scotsman Ice Machine Cleaner (part #19-4247-01). Press and hold the CLEAN button for 3 seconds to start. The cycle takes about 45 minutes. Then rinse thoroughly. Regular cleaning is recommended every 3 months.
What does error code 'E1' mean on my MDT6N90?
Error code E1 indicates a high condenser temperature. This is usually due to a dirty condenser coil or a failed condenser fan motor. Clean the coil with a brush or vacuum, and check the fan for obstructions.
How much ice does the MDT6N90 produce per day?
The MDT6N90 produces up to 90 pounds (40.8 kg) of ice per 24 hours under standard conditions (70°F ambient, 50°F water).
Can I install the MDT6N90 under a counter?
Yes, it is designed for undercounter installation with proper ventilation. Leave at least 6 inches (15 cm) of clearance on the sides and back for airflow. The door requires 1 inch (2.5 cm) clearance to open fully.
What type of water connection is needed?
Use a 3/8-inch female flare fitting for the water supply. A water filter is recommended to prevent scale buildup. The drain connection is 1/2-inch NPT female.
How do I adjust ice cube size?
The MDT6N90 offers two ice size options: half dice (small) and full dice (large). To change, press the ICE SIZE button repeatedly until the desired indicator lights up. The unit will switch at the next harvest cycle.
Why is my ice maker making hollow or cloudy ice?
Cloudy ice usually indicates high mineral content in the water. Install a water filter. Hollow cubes can be caused by low water pressure (min 15 psi) or a clogged water strainer. Clean the strainer monthly.
What is the power consumption of the MDT6N90?
The unit uses 6.5 amps at 115V, approximately 750 watts during ice production. Standby consumption is less than 10 watts.
How do I winterize or store the ice maker?
Disconnect water and power. Drain the water line and reservoir. Use RV antifreeze safe for potable water systems to prevent freezing. Store in a dry, temperature-stable location above 32°F (0°C).
Where can I find replacement parts for the MDT6N90?
Genuine Scotsman parts are available through authorized dealers or online. Common parts include: water pump (part #99-1695-01), control board (part #99-1694-01), and evaporator (part #99-1696-01). Use only original parts to maintain warranty.
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USER MANUAL MDT6N90 Scotsman
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Product information
Brand : Scotsman
Model : MDT6N90
Category : Ice Maker