1. Please operate according to the requirements of operating instructions or theguidance of professional personnel.
2. The digital gauge should be keept clean, the display screen should be bright andclear, so that the data on the display screen clearly.Use slightly alkaline detergentor soapy water to wash the case and connector.
3. The pressure gauge is perishable goods,need to checking regularly to ensure itsaccuracy. 4. Handled gently , to prevent shock and fall.
5. After use, please close all the button, to improve the service life .
6. Plug the joint when not use,to prevent foreign body from entering, clean andreplace regularly refrigerant tube, remove dirt and impurities in valve.