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ACS 661 | ACS 561
  • ACS 661 | ACS 561

ACS 661


The automatic charging stations for R1234yf air conditioners

Instruction manual


The Bosch innovation for the diagnosis of R1234yf systems

The ACS 661 and the ACS 561 are technologically advanced stations that allow reliable maintenance and help maintain a healthy environment.

The technical know-how guarantees safety, ease of use and precision

The ACS 661 and the ACS 561 ensure a simple, fast and precise service of modern R-1234yf air conditioners. Bosch's technology and attention to detail ensure that the equipment complies with all applicable performance and safety regulations, including with regard to work on R-1234yf refrigerant systems.

The advantages of the ACS661 for short

  • Fully automatic procedure or possibility to select individual processes
  • Vacuum pump 170 l / min (ACS 661) or 72 l / min (ACS 561)
  • Internal tank of 20 kg (ACS 661) or 8 kg (ACS 561)
  • 3/8 PS compressor (ACS 661); 1/4 PS (ACS 561)
  • Hose flushing function for compatibility with hybrid / electric vehicle systems
  • Separate UV oil / dye injection bottle (ACS 661)
  • High performance pushed vacuum function
  • Integrated washing program with optional kit
  • Electronic control of internal air exchange
  • Automatic purge of non-condensable gases
  • Easy maintenance of the internal filter
  • Easy maintenance: simple replacement of the vacuum pump oil and the filter drier
  • Printer

Main functions ACS 661


Refrigerant recovery Automatic
Recovery/performance accuracy > 95%
Refrigerant analysis Opzional
Oil drain Automatic
Vacuum function Automatic
Leak test Automatic
Pressure loss test Yes
Pressure loss test (N2/N2H2) No
Hybrid oil function Yes
Oil injection PAG and POE Automatic
UV dye injection Automatic
Refrigerant refill Automatic with electronic scale
Washing function Optionale
Printer Si
Ventilation system Electronic control


Valves Ap and BP 2
AP and BP pressure gauges 63 mm Class 1
Cylinder pressure gauge Digital
Service pipe length 2.5m
Display 160x120 monochrome display
Compressor 1/4 HD
Vacuum pump 170 l/min (6 CFM)
Coolant tank capacity 23 kg
Oil injection tank 2 x 250ml
Oil drain tank 1 x 250 ml
UV tracer tank 1 x 250 ml
Size in cm (L X P X A) 128 x 69 x 69
Weight (with empty refrigerant tank) 110 kg
Supply 230 V 50/60 Hz


Database vehicles Yes
Programmable user database No
Test Performance A/C No
Vehicle wash kit Optional
Usb connection Yes
Wi-Fi connection No
App connection No

Data sheet

Delivery Time
1 / 2 working days (depends from geographic area)
Code type
ACS 661
Conditions of sale
1 year for company
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