Denso Kheos, Instruction Booklet

Page: 24 / 31

Instruction Booklet KHEOS
24 ENGLISH
EN
- The phases of this cycle are divided into: discharge of refrigerant from cylinder, vacuum in cylinder and calibration.
- Connect the external cylinder to the service valve located in the upper part of the cylinder (Fig. 1 connection A). Open the valve
of the external cylinder, rotate the valve on top of the unit’s cylinder towards the outlet connector (Fig. 2 connection A), close the
HP/LP valves then press “OK” to start the operation.
- Once the cycle is started, the unit will transfer all of the internal refrigerant into the external cylinder. Wait for “Cylinder calibration”
message.
Press OK lightly, scrolling of the progress bar that the procedure is being performed correctly. The new message will ask you to
“remove the cylinder and press OK”. Loosen the two nuts that secure the cylinder to the load cell and lift the cylinder, making sure
that the load cell is free from contacts, wait a few seconds then press OK to confirm. Scrolling of the progress bar indicates that the
operation is being performed correctly. If the cycle has not been performed correctly it will not be possible to exit the calibration
procedure, therefore it should be repeated. If the operation has been performed correctly press ESC to return to the main menu.
Block the cylinder with the mechanical retainer and secure the cylinder to the scale with the nuts you previously removed.
-
-“Press calibration”. This function allows you to calibrate the pressure sensor. The display will read “Enter atmospheric pressure”,
remove high and low pressure pipes, open the HP/LP valves, press OK to confirm and ESC to exit. When the progress bar is
complete, the message “End of cycle” will be displayed; press ESC to return to the main menu.
7. Refrigerant transfer from unit to external container
Use an external container to transfer refrigerant into. The container must be type-approved for pressure of at
least 35 Bar and equipped with safety valve; ensure that the volume of the container is adequate to receive the
content of the recovery unit.
Do not proceed with the operation if an external container is not available!
To drain the cylinder, perform the following operations:
- Switch the unit on, enter the “SERVICE” menu and perform the “Cylinder pressure >7 Bar” phase. After that, connect the HP pipe
to a cylinder or another external container prepared to collect the refrigerant and open the valves on the connection line.
- Select “Charge to vehicle”, set the quantity of gas you want to transfer, move the cursor to “start cycle” and press “OK”.
- When transfer has been completed, close the valves and recover the residual pressure in the pipe.
A
B
A
Fig.
1
Fig.
2