Danfoss MTZ72-4VI Compressor

The Danfoss MTZ72-4VI Compressor is a high-performance 6 HP reciprocating compressor engineered for medium to high evaporating temperature applications in commercial refrigeration. Specifically designed to operate on 460V 3-phase 60Hz (and 400V 50Hz) power supplies, this Danfoss Maneurop MTZ series unit utilizes a 2-cylinder design with a displacement of 743 cfh at nominal speed. It comes pre-charged with POE oil 175PZ, making it fully compatible with several HFC refrigerants such as R404A, R134a, R407C, and R407F. The 120.94 cm³ swept volume and full suction-gas cooling ensure the motor operates efficiently even under high-load conditions, while the large internal free volume effectively mitigates the risk of liquid hammering. This model features a 1-3/4" Rotolock suction and 1-1/4" Rotolock discharge connection, equipped with 30 N-m torque-rated equalization ports for reliable parallel mounting in multi-compressor racks.

• Multi-Refrigerant Compatibility: Optimizes inventory by supporting a wide range of HFC and HFO blends using polyolester oil.
• Robust Motor Design: Features internal overload protection and high-torque performance to handle fluctuating voltage ranges (414-506V).
• Quiet Operation: Suction-gas cooling allows for the use of acoustic jackets without affecting thermal performance.
• Easy Installation: Shipped as a VE version with an integrated oil sight glass and oil equalization port for rapid system diagnostic and setup.
• Liquid Handling Resilience: Large internal volume protects the hermetic reciprocating valves from damage caused by occasional liquid slugging.

What oil is required for the MTZ72-4VI?
This model uses 175PZ polyolester oil (POE). If you are replacing an older MT series unit that used mineral oil, ensure the system is thoroughly flushed before installing this MTZ replacement.

Does this compressor include mounting hardware?
Yes, the single-pack unit includes the mounting kit with grommets, bolts, nuts, and the necessary rotolock gaskets and solder sleeves for the suction and discharge lines.

Can I use this compressor with R22?
While the mechanical design is similar to the MT series, the MTZ is specifically optimized for HFCs. For R22 applications, the standard MT sequence with mineral oil is typically preferred by contractors to ensure oil return stability.

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.