This manual is for the testo 549 - testo 550 digital manifold, and provides details on how to use it.
This instruction manual provides guidance for the testo 549 and testo 550 digital manifolds, which are designed for maintenance and service work on refrigeration systems and heat pumps. The document outlines safety precautions, environmental protection measures, and technical specifications, including compatibility with various refrigerants and media.
| Pressure measuring range | -100 to 6000 kPa / -0.1 to 6 Mpa / -1 to 60 bar (rel) / -14.7 to 870 psi |
|---|---|
| Temperature measuring range | -50 to +150 °C / -58 to 302°F |
| Vacuum measuring range | -1 to 0 bar / -14.7 to 0 psi |
| Power supply | 4x 1.5 V, type AA/mignon/LR6 |
| Battery life | approx. 250h |
| Operating temperature | -20 to 50 °C / -4 to 122 °F |
| Bluetooth Range | > 20 m (free field) |
No, the instruments are not compatible with refrigerants containing ammonia.
They may only be used by qualified authorized personnel.
The refrigerant hoses must be replaced with new ones, and the instrument should be sent for a technical check.