This is a user manual for testo 550 digital manifold
This manual provides instructions for using the Testo 550 digital manifold, designed for maintenance and servicing of refrigeration systems and heat pumps. It includes safety guidelines, technical specifications, product description, setup steps, and operation procedures. The device measures pressure and temperature, supports 40 refrigerants, and features an illuminated LCD display. It requires 4x AA batteries and is compatible with non-corrosive refrigerants, water, and glycol, but not ammonia-based refrigerants. The manual also covers error reports, accessories, and disposal instructions.
| Pressure Measuring Range | HP/LP: -1 to 50 bar (rel) |
|---|---|
| Temperature Measuring Range | -50 to +150 °C |
| Refrigerants Supported | 40 |
| Display Type | Illuminated LCD |
| Battery Life | approx. 150 h (display light off) |
| Housing Material | ABS/PA/TPU |
| Dimensions | 265 x 135 x 75 mm |
| Weight | approx. 1000 g (without batteries) |
| Accuracy (Pressure) | ±0.75 % of final value (±1 digit) |
The testo 550 is compatible with most non-corrosive refrigerants, water, and glycol. It is not compatible with refrigerants that contain ammonia.
The battery life is approximately 150 hours when the display light is off.
The warranty duration is 2 years.
Contact your dealer or Testo Customer Service, as the EEPROM is defective.