Danfoss MTZ40-1VI Compressor

The Danfoss Maneurop MTZ40-1VI is a heavy-duty reciprocating compressor engineered for medium and high evaporating temperature applications. Operating on a 208-230V single-phase power supply, this unit features a displacement of 4.15 cubic inches per revolution, making it a reliable solution for R404A, R134a, R407C, and R507A refrigerants. Unlike standard hermetic units, the MTZ series is designed for commercial refrigeration environments where high internal free volume and oil management are critical to preventing liquid slugging. The MTZ40JH1AVE configuration includes internal motor protection and a polyolester (POE) oil charge to ensure compatibility with HFC systems. Technicians frequently spec this model for its robust crankcase design and ability to handle varying thermal loads without compromising volumetric efficiency. For field replacements, ensure proper vacuum dehydration and check the start capacitor and run capacitor ratings to match the high starting torque requirements of this 3.3-plus HP compressor.

• Large Internal Volume: Provides superior resistance to liquid refrigerant migration, reducing the risk of compressor failure during cold starts.
• Multi-Refrigerant Compatibility: Optimized for use with R404A, R134a, and R407 series, allowing for versatile inventory application in the field.
• Suction Gas Cooled Motor: Ensures consistent operating temperatures even in demanding ambient conditions, extending the service life of the motor windings.
• Rotolock Connections: Facilitates easier installation and serviceability compared to brazed connections, allowing for faster component swaps.

What oil is pre-charged in the MTZ40-1VI?
This unit comes pre-charged with 160PZ POE oil, specifically formulated for HFC refrigerants. If retrofitting or servicing, ensure the system is free of mineral oil contaminants.

Can this compressor replace an older MT series model?
Yes, the MTZ is the direct replacement for the MT series when transitioning from HCFC to HFC refrigerants. Ensure that the expansion valve and filter drier are also updated to match the new refrigerant properties.

What are the electrical requirements for the 1VI motor code?
The 1VI code indicates a 208-230V 1-phase 60Hz motor. A high-starting torque (HST) kit, consisting of a start relay and start capacitor, is typically required for proper operation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.