Autool LM110 Podręcznik użytkownika - Strona 9

Przeglądaj online lub pobierz pdf Podręcznik użytkownika dla Przyrządy pomiarowe Autool LM110. Autool LM110 12 stron. Digital manifold gauge

3.Flashing parameter in LCD display could be changed by pressing ARROW button.

Type of refrigerant selection increment goes forward in single way, such as R1->

R2->R3 Long press ARROW button can change selection direction.

4.Short press SETTING button to switch parameter selection.

5.When all parameters are set, long press SETTING button to save selected item.

6.In case FUNCTION button is pressed accidently in the process of setting

parameters, instrument will opt out and cancel all previous set items.

7.Common Problems

7.1 Low Battery Power Supply

Instrument includes low battery indication of one battery sign at the top left corner in

LCD display. When it displays, batteries should be replaced on time to obtain

accurate test reading.

7.2 Damaged Hose or Valve Stem

Please check pipe fittings and hose before test. As long as something wrong is

visible, please replace it immediately to avoid any accidence.

7.3 Failure of Refrigerant Filling

There is a valve core in the refrigerant inlet of the system. When connecting

instrument to system, pay attention to the two terminals of the hose.

Connect one terminal with a core to the refrigera-

-tion system, while another terminal without a core to the instrument.

7.4 Potential Leak Points

Every hose terminal comes with a nylon pad with a certain service life. Please

replace it when it is overused or flawed.

Check refrigeration system's pipes and other connectors.

8. Glossary

Saturation

The state of saturation is the coexistence of a refrigerant in a liquid and gas state.

Condensation Temperature

In the condenser, the refrigerant is condensed by the high-temperature gaseous

refrigerant to the temperature of the liquid refrigerant, that is, the saturation

temperature under condensing pressure.

Evaporation Temperature

In the evaporator, the refrigerant evaporates from the liquid refrigerant to the

temperature of the gaseous refrigerant, that is, the saturation temperature under

evaporation pressure.

Degree of Subcooling and Superheat

Subcooling: condensing temperature - condensing outlet temperature.