Compresor de aire de tornillo rotativo sin aceite Atlas Copco ZT 75 (FF)

Descripción

The Atlas Copco ZT 75 is the 75 kW air-cooled machine of the ZR/ZT 55-90 oil-free family, a fixed-speed compressor that brings certified oil-free air to plants without a cooling water circuit. The compression chambers run completely free of oil, and the package carries the ISO 8573-1 CLASS 0 (2010) certification verified by TÜV.

The Full Feature build integrates the IMD adsorption dryer inside the same package. Three pressure versions at 50 Hz and three at 60 Hz cover free air delivery from 178.7 to 212.8 l/s, and a high ambient temperature variant takes intake air up to 50 degrees Celsius.

Where the ZT 75 Sits in the Oil-Free Range

The ZR/ZT 55-90 family serves the plants whose oil-free demand has outgrown the smaller packages but has not yet reached the ZR/ZT 110-275 class, and the ZT 75 carries 75 kW of installed motor power in the middle of the range. The letter Z marks the oil-free architecture: the precision-cut rotors never touch, so the compression chamber needs no lubrication and no oil can reach the air stream. Where the demand profile swings, the ZT 75 VSD of the same rating adjusts its speed continuously instead of loading and unloading.

Atlas Copco pioneered oil-free air technology over sixty years and became the first manufacturer awarded CLASS 0 certification. The ZT 75 carries that standard into the air-cooled 75 kW class, and the package arrives as a complete all-in-one installation: place it on a flat floor, connect the power line and the air outlet, and push the start button.

Two Branches and the HAT Variant

Two names describe the branches of the ZT 75, and each adds one fact:

• Estándar: el grupo compresor suministra aire sin aceite para redes con un sistema externo de tratamiento de aire situado aguas abajo; su diseño refrigerado por aire disipa el calor de la compresión hacia la sala de máquinas.
• FF — Funcionalidad completa: el paquete integra el secador por adsorción IMD, por lo que el aire seco sale directamente de la máquina sin que se consuma energía externa en la regeneración.

Every version combines with both branches, and the high ambient temperature (HAT) variant sits on the 8.6 bar band for installations where the summer heat would force a standard package to derate. Plants with a cooling water circuit pick the ZR 75 of the same rating instead.

Technical Specifications of the ZT 75

The table below condenses the ZT 75 into its headline figures:

Datos nominales a 50 Hz

Unit performance is measured according to ISO 1217, annex C, edition 4 (2009). The 7.5 bar version is measured at 7 bar, the 8.6 bar version at 8 bar and the 10 bar version at 9 bar. The HAT variant carries the same hardware rating with a maximum intake and cooling air temperature of 50 degrees Celsius:

The 7.5 bar version leads the series at 200.9 l/s (426 cfm), and the 10 bar band delivers 178.7 l/s (379 cfm). The installed motor power stays at 75 kW across all versions, and the sound pressure level holds at 76 dB(A) at the work station.

Datos nominales a 60 Hz

The 60 Hz versions cover three bands from 7.25 to 10.4 bar(e) with the HAT variant on the 8.6 bar band, and the motor is rated at 100 hp. The measurement pressures follow the same rule as at 50 Hz:

The 7.25 bar version tops the whole series at 212.8 l/s (451 cfm). The noise level is the A-weighted emission sound pressure level at the work station, measured according to ISO 2151: 2004 using ISO 9614/2, with a total uncertainty value of 3 dB(A).

Dimensiones y peso

The Full Feature package of the ZT 75 takes 700 mm more length than the Standard build, the only footprint difference in the family:

La versión estándar mide 2.180 mm de longitud, mientras que el secador integrado de la versión «Full Feature» amplía las dimensiones del conjunto hasta los 2.880 mm. No se requieren cimientos para ninguna de las dos versiones, y el conjunto se instala directamente sobre el suelo plano de la sala de compresores.

Pureza del aire de clase 0, verificada por TÜV

The ZT 75 belongs to the first compressor range in the industry certified oil-free according to ISO 8573-1 CLASS 0 (2010). TÜV type-tested the range with the most rigorous methodologies available, measuring all possible oil forms across a range of temperatures and pressures, and found no traces of oil at all in the output air stream. CLASS 0 is the most stringent class of the standard: the total oil concentration is as specified by the equipment user or supplier and more stringent than class 1.

That certification is what makes the ZT 75 the default choice where a single trace of oil costs a batch: food and beverage lines running fermentation, packaging and filling, electronics plants cleaning chips and boards, petrochemical operations in extreme heat and humidity, and pharmaceutical production from tablet coating to bottling.

El diseño refrigerado por aire

Air cooling defines the ZT branch of the family. A stainless steel pre-cooler with fins handles the heat exchange with excellent transfer and easy access for cleaning, and low-noise, low-energy radial cooling fans reject the heat into the machine room. Because no cooling water circuit is needed, the ZT 75 installs where the water-cooled ZR 75 cannot: laboratory buildings, workshops and remote sites that run oil-free air on a power line alone.

Built for High Ambient Temperatures

The ZT 75 is the branch of the family that carries the high ambient temperature version, required when the ambient temperature rises above 40 degrees Celsius. The HAT variant of the 8.6 bar band is rated for a maximum intake and cooling air temperature of 50 degrees Celsius, which keeps certified oil-free production running in hot climates and poorly ventilated machine rooms where a standard package would have to derate.

Artículo completo: El secador por adsorción IMD integrado

In the ZT 75 Full Feature, the IMD adsorption dryer eliminates the moisture before it enters the air net. The dryer uses the heat of the compressor for regeneration, so no external energy is needed to dry the air, and the savings against a conventional dryer are large. The pressure drop through the dryer is minimal, which cuts the operating cost again, and the whole drying function lives inside the compressor package instead of beside it.

Control y supervisión

The Elektronikon unit controller runs the compressor and the integrated dryer from one control system. The high-resolution color display shows the running conditions with clear icons and intuitive navigation, monitors the maintenance status, and raises pro-active service indications, alarms for malfunctions and safety shutdowns. The display supports 31 different languages, and built-in remote control and notification functions come as standard with ethernet-based communication.

SMARTLINK y opciones

The option list of the ZT 75 tailors the package to the plant:

• Paquete de monitorización y protección: calentadores anticondensación, sistema de monitorización de rodamientos SPM y sensores PT 1000 en los devanados y los rodamientos.
• SMARTLINK: supervisión en línea de los datos del sistema de aire comprimido con avisos de alerta y programación del mantenimiento.
• Sensor PDP y kit de baja carga: opciones con todas las prestaciones para la verificación del punto de rocío y un funcionamiento estable a carga parcial.
• High ambient temperature version — the air-cooled branch option for ambient temperatures above 40 degrees Celsius.
• Placas de anclaje, embalaje en caja de madera, certificados de materiales, certificado de ensayo y ensayo de rendimiento realizado ante testigos: para una instalación controlada y una recepción documentada.
• Elementos sin teflón y kit de purga para aire seco durante las paradas —para materiales de recubrimiento específicos y entornos tropicales—.

Applications of the ZT 75

Food and beverage plants run the ZT 75 for fermentation, aeration, transportation, filling and capping, where the CLASS 0 certification removes the contamination risk from the audit trail. Electronics manufacturers use the clean, dry air for removing microscopic debris from chip and board surfaces, and petrochemical sites value the machine’s ability to run in extreme temperatures and humidity conditions around the clock.

Pharmaceutical production completes the picture, from fermentation and tablet coating to packing and bottling, where 100 percent oil-free air protects both the process and the brand. Where the demand profile fluctuates heavily, the plant adds the ZT 75 VSD of the same rating next to this fixed-speed machine, and growing networks step up to the ZT 90 de la misma plataforma.

Service and Support Around the ZT 75

The ZT 75 is built for long overhaul intervals, few service interventions and minimal maintenance cost, and every machine is tested before delivery to ensure it meets the specifications. A global service operation with field service engineers across 160 countries backs the installed base, and genuine Atlas Copco parts keep the package at its rated performance.

Seadweer supplies genuine Atlas Copco spare parts and service kits for the ZT 75 and its Full Feature branch, and the parts coverage follows the same platform index as the ZT 75 VSD and the larger ZT 90. Send us the compressor model together with the parts you need, and the correct items are confirmed with the quotation in one pass.

Preguntas frecuentes

What does the ZT 75 deliver at 8.6 bar?

The 8.6 bar version delivers 186.7 l/s at 50 Hz, which equals 11.2 m³/min or 396 cfm, measured at 8 bar according to ISO 1217 annex C, edition 4 (2009). The HAT variant of the same band reads 178.8 l/s (379 cfm) for 50 degrees Celsius intake air.

Is the ZT 75 an air-cooled machine?

Yes. The ZT letter marks the air-cooled branch of the ZR/ZT family: a stainless steel pre-cooler with fins and low-noise radial fans reject the heat, and no cooling water circuit is required. The water-cooled equivalent is the ZR 75.

¿Hasta qué punto está libre de aceite el aire?

The ZT 75 carries the ISO 8573-1 CLASS 0 (2010) certification verified by TÜV, the most stringent class of the standard. TÜV testing found no traces of oil at all in the output air stream across the tested range.

¿Qué incluye la versión «Full Feature»?

FF integrates the IMD adsorption dryer inside the compressor package. The dryer regenerates with the heat of the compressor, so no external energy is needed, and the package grows from 2,000 kg to 2,600 kg and from 2,180 mm to 2,880 mm in length.

What is the HAT version for?

HAT stands for the high ambient temperature variant, rated for a maximum intake and cooling air temperature of 50 degrees Celsius. It is required when the ambient temperature rises above 40 degrees Celsius, and the ZT branch is the one that carries it.

How loud is the ZT 75?

The sound pressure level at the work station reads 76 dB(A) on every version at both frequencies. The value follows ISO 2151: 2004 with the ISO 9614/2 method and carries a total uncertainty value of 3 dB(A).