to stabilise and then press OK. When the progress bar is complete, if the cycle has not been performed successfully, you will be
unable to exit the calibration procedure. You must therefore repeat it from scratch. If the cycle has been performed successfully, the
message “End of cycle” will be displayed; press ESC to return to the main menu.
- “UV calibration”. This option allows you to calibrate the UV scale. For this phase you need a sample weight of 500 g. Follow the
same instructions as given for oil calibration (right-hand side container).
- “Press calibration”. This function allows you to calibrate the pressure sensor. Press OK to start the cycle. The display will read
“Set atm. pressure and press OK”; remove High and Low service hoses, open the HP and LP manual valves in the front panel of
the refill unit, press OK to confirm (ESC to exit). When the progress bar is complete, the new message “Close HP and LP and press
OK” will be displayed; close the HP and LP manual valves in the front panel of the refill unit and press OK to continue (ESC to exit).
The vacuum pump starts and when the cycle is successful completed, the message “End of cycle” will be displayed; press ESC to
return to the main menu.
7. Refrigerant transfer from the unit to an external container
To drain the cylinder, perform the following operations:
- Turn on the unit, connect the HP pipe to a cylinder or another external container prepared to collect the refrigerant and open the
valves on the connection line.
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Select “CHARGE TO VEHICLE”, set the quantity of gas you want to transfer, set the oil to zero, set “UV” to NO, move the cursor to
“Start cycle” and press OK.
- When the transfer phase has been completed, close the valves and recover the residual pressure in the pipe.
8. Routine maintenance
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8.1 Refrigerant filter replacement:
The innovative refrigerant cartridge filters have also allowed a technological evolution in the maintenance process. This unit is
equipped with an electronic system that is capable of automatically performing all the phases required for filter replacement, ensur-
ing full safety for the operator without the help of technical staff.
When the filter counter has reached a calculated value of refrigerant recovered from vehicles, a message prompting the operator
to replace the filters is displayed for a few seconds upon activation. Before continuing, order the new filters from the CTR S.R.L.
sales network.
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