Maneurop MTZ160HW4VE

Maneurop MTZ160HW4VE mbsmpro

Mbsmpro.com, Compressor, MTZ160HW4VE, 13 hp, Maneurop, Cooling, R134a R404A R407C R507A, 20.3 kW, 380‑400/3/50Hz 460/3/60Hz, MBP/HBP, Hermetic reciprocating

Maneurop MTZ160HW4VE overview

The Maneurop MTZ160HW4VE is a heavy‑duty hermetic reciprocating compressor designed by Danfoss for medium‑back‑pressure commercial refrigeration with HFC refrigerants R134a, R404A, R407C, and R507A.
It targets cold rooms, process chillers, milk tanks, and larger beverage installations where robust construction, multi‑refrigerant flexibility, and three‑phase power supply are required.

Technical specifications and operating data

The MTZ160HW4VE belongs to the MTZ160‑4VI family and combines a three‑phase motor with high‑efficiency pistons to reach double‑digit horsepower levels.
Its nominal cooling capacity is about 20.3 kW at 50 Hz, with operation possible on 380‑415 V/3/50 Hz or 460 V/3/60 Hz networks.

Main technical data – MTZ160HW4VE

Parameter Value Notes
Compressor family Maneurop MTZ160‑4VI Medium‑temperature line.
Technology Hermetic reciprocating Piston design.
Nominal cooling capacity (50 Hz) 20.3 kW At R404A MBP rating.
Motor power supply 380‑415 V 3~ 50 Hz, 460 V 3~ 60 Hz Wide voltage range 340–440 V @ 50 Hz.
Motor protection Internal overload protector Thermally protected windings.
Max. operating current Around 36 A at 460 V 60 Hz Label LR (locked‑rotor) approx. 140 A.
Max. condensing temperature 50 °C According to series guideline.
Minimum suction gas temp. −35 °C LP slide TS min.
PS design pressure 22.6 bar PED data.
Oil type Danfoss POE 160PZ Factory charge of polyester oil.
Compatible refrigerants R134a, R404A, R407C, R507A and new blends like R448A/R449A/R452A Multi‑refrigerant platform.

This table shows why the MTZ160HW4VE is positioned as a 13 hp‑class compressor for large medium‑temperature duties rather than domestic or small commercial equipment.
The internal overload, POE 160PZ oil, and 22.6‑bar shell rating give it the safety margin needed for high‑pressure HFC blends like R404A and R507A.

Field applications and exploitation potential

Because of its capacity and three‑phase motor, the MTZ160 series is frequently installed in:

  • Medium‑temperature cold rooms for food storage in supermarkets and restaurants.
  • Process chillers, milk tanks, and air‑dryer systems that need stable evaporating temperatures and long run times.

For installers, the multi‑refrigerant capability is a real advantage: the same MTZ160HW4VE shell can be used with traditional R404A/R507A or retrofitted to lower‑GWP blends like R448A or R449A, provided the system is re‑calculated using Danfoss performance software.
The POE 160PZ oil ensures full miscibility with HFC and HFO blends, which is essential for good oil return in long piping runs and vertical risers in supermarket systems.

Value comparison with another Maneurop and Copeland models

To position this compressor on the market, it is useful to compare it with a smaller Maneurop MTZ80‑4VI and with a scroll alternative such as a Copeland ZR81KCE.

Capacity comparison

Model Technology Refrigerants Nominal capacity at 50 Hz Typical application
MTZ80‑4VI Hermetic reciprocating R404A/R507A/R407C/R134a ≈10 kW at MBP. Small cold rooms, display cases.
MTZ160HW4VE (MTZ160‑4VI) Hermetic reciprocating R404A/R507A/R407C/R134a 20.3 kW at MBP. Large cold rooms, process cooling.
Copeland ZR81KCE Hermetic scroll R404A/R407C etc. ≈18–19 kW at AHR MBP conditions. Packaged condensing units, rooftop units.

The MTZ160HW4VE clearly delivers about double the cooling capacity of the MTZ80‑4VI, which justifies its use in bigger cold rooms or multi‑evaporator racks.
Against a similar‑capacity Copeland scroll, the reciprocating design may be a bit noisier but offers higher displacement and strong performance at lower evaporating temperatures, making it attractive in heavy commercial refrigeration.

Operating range and refrigerant flexibility

Model Evaporating range Condensing limit Refrigerant flexibility
MTZ160HW4VE Medium‑temp, down to about −25 °C with R404A. Up to 50 °C condensing. R404A, R507A, R407C, R134a, R407A/F, R448A, R449A, R452A.
Copeland ZR scroll Medium‑temp, usually not as deep at low evaporating. Similar condensing limits depending model. Some models have narrower approved refrigerant lists.

From this table, the MTZ160HW4VE stands out by its very wide refrigerant portfolio, which is a strong value for installers looking for future‑proof solutions during HFC phase‑down.
Scroll compressors remain strong competitors in efficiency and sound level, but they are not always as tolerant to liquid slugging or deep evaporating conditions as a rugged reciprocating Maneurop.

Installation, reliability and service notes

Danfoss guidelines for MT/MTZ compressors specify that these units must be installed with proper crankcase heaters, suction line filters, and accurate superheat control to avoid liquid floodback.
They also recommend limiting the number of starts to around 12 per hour and ensuring correct phase rotation and voltage balance to protect the three‑phase motor.

During service, only POE 160PZ oil should be used, and charging must be done as a liquid from the cylinder when handling zeotropic blends such as R407C, R448A, or R449A to prevent fractionation.
When retrofitting from R404A to a lower‑GWP blend, system components such as expansion valves and line sizes must be checked against the new operating pressures and mass flow predicted by Danfoss software tools.

Maneurop MTZ160HW4VE mbsmpro



Tecumseh CAJ9480T R22 Hermetic Compressor: Complete Technical Guide for Professionals

Tecumseh CAJ9480T R22 Hermetic Compressor: Complete Technical Guide for Professionals

The Tecumseh / L’Unité Hermetique CAJ9480T is a fully hermetic reciprocating compressor designed for commercial refrigeration systems operating with R22 and compatible retrofit refrigerants. Widely used in small cold rooms, display cabinets and compact condensing units, it runs on 220–240 V single‑phase, 50 Hz power and delivers 5/8 HP with around 1.97 kW of cooling capacity at EN12900 conditions.

General description

This model belongs to the CAJ family, Tecumseh’s workhorse range for medium and high back‑pressure refrigeration applications such as positive‑temperature cold rooms and commercial coolers. It is a hermetic piston compressor using a CSR motor (capacitor start, capacitor run), giving high starting torque and stable operation on standard single‑phase networks.

Manufactured in France under the L’Unité Hermetique brand, the CAJ9480T combines compact size, good efficiency and a robust mechanical design, which explains its popularity among installers and service companies like Mbsmgroup, Mbsm.pro and mbsmpro.com.

Main technical specifications (with HP and W)

The table below consolidates key data from Tecumseh specification sheets and trusted distributors.

Specification CAJ9480T value (R22, 50 Hz)
Refrigerant R22 (and some approved retrofits such as R438A on specific codes)
Application range Medium / high back pressure (commercial refrigeration)
Nominal horsepower (HP) 5/8 HP (0.625 HP)
Nominal cooling capacity (W) ≈ 1 968 W at EN12900: 220 V, 50 Hz, +5 °C evap / +50 °C cond
Input electrical power (W) ≈ 780–800 W at the same EN12900 rating point
Displacement 15.2 cm³/rev
Supply voltage 220–240 V, 1‑phase, 50 Hz
Voltage range 187–242 V (50 Hz)
Rated load amps (RLA, 50 Hz) ≈ 4 A
Locked rotor amps (LRA) ≈ 24 A
Oil type / quantity Synthetic alkylate or mineral, approx. 475–887 cm³ depending on version
Net weight ≈ 19–22 kg

The nameplate visible in your photo shows “R22 – LRA 24 – 203–220 V – 50 Hz – RLA 4.00”, matching these published values and confirming a single‑phase CAJ9480T produced in France.

Typical applications and field use

Because of its capacity, voltage and starting characteristics, the CAJ9480T fits many everyday refrigeration jobs.

  • Small cold rooms for butchers, restaurants, bakeries and mini‑markets originally charged with R22.
  • Vertical display cabinets, reach‑in fridges and refrigerated counters using factory‑built condensing units.
  • Custom‑built condensing units and mini‑packs produced by specialists such as Mbsmgroup, Mbsm.pro and mbsmpro.com, especially where reliable 5/8 HP performance is required on 230 V single‑phase.

Its CSR motor and high starting torque help the compressor start under tougher conditions, such as long pipe runs or marginal supply voltage.

Installation and maintenance best practices

Correct installation and servicing are essential to protect this compressor and keep systems efficient.

  • Flush and evacuate the circuit carefully, and always install a new filter‑drier when replacing a failed R22 compressor.
  • Use the start and run capacitors and potential relay recommended by Tecumseh (for example, 88 µF start and 15 µF run on the CAJ9480T‑FZ code) and follow the official wiring diagram.
  • Verify charge, suction superheat and condensing temperature so operation stays within Tecumseh’s performance envelope.
  • For R22 retrofit projects, respect manufacturer guidance on compatible replacement refrigerants and oil changes to avoid lubrication and overheating issues.

Working with trusted suppliers such as Mbsmgroup and its online platforms helps ensure genuine Tecumseh parts, correct electrical components and updated technical information.