Danfoss MLZ038T4LC9A Scroll Compressor (121L8645) | 5 HP | 14,540 W (49,640 BTU/h) Cooling Capacity | R404A / R448A / R449A / R452A | 3 Phase 380-415V

Designed for supermarket, cold room, display cabinet, beverage cooler and process cooling applications, this is the Danfoss MLZ038T4LC9A fixed-speed commercial refrigeration scroll compressor (Danfoss code: 121L8645). With a displacement of 80.95 cm³ and 5 HP power, it delivers, under HBP conditions, approximately 14,540 W (49,640 BTU/h) of cooling capacity. Along with R404A/R507A, it also works with R134a, R22, R407C and the low-GWP alternatives R448A, R449A, R452A, R513A; it is filled with POE oil.

Danfoss Scroll Compressor for Commercial Refrigeration — 5 HP / 49,640 BTU/h

MLZ series Maneurop scroll compressors provide reliable performance in medium and high evaporating temperature (MT/HT) refrigeration applications with few moving parts, low vibration and high efficiency. With internal motor protection and wide refrigerant compatibility, they offer easy installation and service. With a supply range of 380-415V/3/50Hz and 460V/3/60Hz, they run on both 50 Hz and 60 Hz grids.

Key Features

• Scroll technology — few parts, low vibration, high efficiency
• Fixed speed; internal overload protector
• Wide refrigerant compatibility: R134a, R22, R404A, R407C, R448A, R449A, R452A, R507A, R513A
• 380-415V / 3 phase / 50Hz (and 460V/3/60Hz) three-phase supply
• Solder / ODF connection (suction 7/8 inch, discharge 1/2 inch); rotalock adapter available as an accessory; CE, UL, UKCA approved

Technical Specifications

• Brand / Model: Danfoss Maneurop / MLZ038T4LC9A (Danfoss code: 121L8645)
• Type: Scroll, fixed speed, hermetic
• Application: Commercial refrigeration — medium/high temperature (MT/HT)
• Nominal Power: 5 HP (5 horsepower) — Danfoss datasheet
• Cooling Capacity: ~14,540 W (49,640 BTU/h) — HBP (te +7.2°C / tc +54.4°C); COP ~2.19
• Displacement: 80.95 cm³ (14.1 m³/h @ 2900 rpm)
• Compatible Refrigerants: R134a, R22, R404A, R407C, R448A, R449A, R452A, R507A, R513A
• Power Supply: 380-415V/3/50Hz and 460V/3/60Hz
• Speed: 2900 rpm (50Hz) / 3500 rpm (60Hz)
• Current: RLA 9.6 A / MCC 15 A / LRA (starting) 70 A
• Motor Protection: Internal overload
• Oil: POE 215PZ, 1.57 L (viscosity 46 cP)
• Connection: Solder/ODF — suction 7/8 inch (22.2 mm), discharge 1/2 inch (12.7 mm); rotalock adapter accessory
• Pressure: High side max. 31.1 bar; low side max. 26.2 bar
• Dimensions: Height ~455 mm, diameter 184 mm (MLZ 030-045 body)
• Weight: Net 37.2 kg (gross ~42.0 kg)
• Protection Class: IP22
• Approvals: CE, UL, UKCA
• Equivalent (cross-reference): Copeland ZB38K class (medium temperature scroll)

Technician Tips

• Braze the solder/ODF connections under nitrogen to prevent internal oxidation.
• POE oil is hygroscopic; keep the compressor sealed until installation and evacuate the system thoroughly before commissioning (moisture = acid + winding failure).
• Scroll direction of rotation is critical; verify the phase sequence at first start-up (in reverse rotation no pressure builds up and noise increases).
• The stated capacity is at HBP (te +7.2°C / tc +54.4°C) conditions; confirm the actual capacity for your own evaporating/condensing temperatures with Danfoss Coolselector.