The Danfoss MT36-4VI is a medium-temperature Maneurop reciprocating compressor designed for high-demand commercial refrigeration and HVAC systems utilizing R22 refrigerant. This 3-phase unit operates at 380-400V/50Hz or 460V/60Hz, delivering a nominal capacity of 37,992 Btu/h under standard ARI conditions (45°F evaporator / 130°F condenser). Built with a large internal free volume, the MT36-4VI provides superior liquid slugging resistance, making it a reliable choice for walk-in coolers and process cooling applications. The assembly features a 1-1/4" Rotolock suction connection with a 5/8" ODF sleeve and a 1" Rotolock discharge with a 1/2" ODF sleeve, alongside a 3/8" NPT oil equalization port for parallel compressor rack configurations. Charged with mineral oil, this hermetic reciprocating unit maintains high volumetric efficiency and thermal stability across a broad operating envelope, ensuring consistent mass flow and system oil return in field retrofits or direct HVAC replacement scenarios. Key Benefits for Contractors High Liquid Tolerance: Large internal volume protects the Danfoss MT36-4VI against transient liquid return, reducing mechanical wear during cold starts. R22 Compatibility: Specifically engineered for HCFC systems requiring mineral oil lubrication and reciprocating compression technology. Versatile Electrical Range: Dual-frequency capability (50/60 Hz) allows for standardized commercial refrigeration compressor inventory across various voltage environments. Serviceability: Rotolock valves simplify compressor installation and maintenance, providing a secure, leak-free connection compared to direct sweat-in models. Internal Protection: Features internal motor protection to prevent winding failure due to excessive current or overheating. Common Questions & Technical Insights What is the proper oil type for the Danfoss MT36-4VI? This R22 reciprocating compressor is factory-charged with 160P mineral oil. It is critical to maintain oil compatibility; if retrofitting to an HFC refrigerant, a complete oil flush and transition to POE oil (Maneurop MTZ series) would be required. Can this compressor be used in parallel rack systems? Yes, the Danfoss MT36-4VI includes a 3/8" NPT oil equalization connection, allowing it to be integrated into piping headers for balanced oil levels across multiple units. What are the connection sizes for field piping? The suction side uses a 1-1/4" Rotolock nut with a 5/8" ODF sleeve, while the discharge side uses a 1" Rotolock nut with a 1/2" ODF sleeve, facilitating standard HVACR part compatibility. This item must ship via truck. Please contact us for freight quote. 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.
