Danfoss MLZ026T4LT9A Scroll Compressor (121L8754) | 3.5 HP | 10,258 W (35,020 BTU/h) | R404A | 3 Phase 380-415V | Rotalock

Designed for supermarket, cold room, display cabinet and beverage cooler applications, the Danfoss MLZ026T4LT9A is a fixed-speed commercial refrigeration scroll compressor (Danfoss code: 121L8754). With a 57.11 cm³ swept volume and 3.5 HP power, it delivers at HBP conditions approximately 10,258 W (35,020 BTU/h) of cooling capacity. It has Rotalock service valve connections. In addition to R404A/R507A, it also works with R134a, R22, R407C and the low-GWP alternatives R448A, R449A, R452A, R513A; it is charged with POE oil.

Danfoss Scroll Compressor for Commercial Refrigeration — 3.5 HP / 35,020 BTU/h

MLZ series Maneurop scroll compressors deliver reliable performance in medium and high evaporating temperature (MT/HT) refrigeration applications with few moving parts, low vibration and high efficiency. It operates across a 380-415V/3/50Hz and 460V/3/60Hz supply range.

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
• Rotalock service valves (suction 1 1/4 inch, discharge 1 inch); CE, UL, UKCA approved

Technical Specifications

• Brand / Model: Danfoss Maneurop / MLZ026T4LT9A (Danfoss code: 121L8754)
• Type: Scroll, fixed speed, hermetic
• Application: Commercial refrigeration — medium/high temperature (MT/HT)
• Nominal Power: 3.5 HP (3.5 horsepower) — Danfoss datasheet
• Cooling Capacity: ~10,258 W (35,020 BTU/h) — HBP (te +7.2°C / tc +54.4°C)
• Swept Volume: 57.11 cm³ (9.9 m³/h @ 2900 rpm)
• Compatible Refrigerants: R134a, R22, R404A, R407C, R448A, R449A, R452A, R507A, R513A
• Supply: 380-415V/3/50Hz and 460V/3/60Hz
• Current: RLA 6.4 A / MCC 10 A / LRA (starting) 45 A
• Oil: POE 215PZ, 1.06 L
• Connection: Rotalock — suction 1 1/4 inch (3/4 inch / 19 mm pipe), discharge 1 inch (1/2 inch / 12.7 mm pipe)
• Dimensions: Height 412 mm, diameter 165 mm
• Weight: Net 30.84 kg
• Approvals: CE, UL, UKCA; IP22

Technician's Tips

• Braze the connections on the Rotalock service valves under nitrogen to prevent internal oxidation.
• POE oil absorbs moisture; evacuate the system thoroughly before commissioning.
• Scroll rotation direction is critical; verify the phase sequence at first start-up.
• The stated capacity is at HBP conditions (te +7.2°C / tc +54.4°C); confirm for your own conditions with Danfoss Coolselector.