PRATIKA
User and Maintenance Guide Page 19/33
Partially open (to approx. 45° degrees) the OIL DISCHARGE valve
. This valve should always
be keep in the
partially shut position
throughout all unit operating phases to avoid excessive
pressure at discharge causing oil to be ejected out of the vent tube.
7.3 OPERATING PHASES
This section describes all the phases that should be carried out by the operator to obtain excellent
working results in absolute safety, illustrating the manual and automatic machine modes. The
machine is equipped with an intelligent monitoring device that indicates any machine malfunction
by visualising a number code that can be read by the operator, an acoustic signal at the beginning
of machine operations indicating that the machine set for a particular function and is functioning
correctly and a second acoustic signal indicating that the operation has been terminated.
Before carrying out the operations described below, to achieve optimum operating conditions from
the system (both in terms of saving energy and time), we advise switching on the vehicle engine so
that the conditional plant runs for a few minutes and the A/C system is fully running as in normal
conditions.
!
Before carrying out the recovery procedure, we advise checking the state of the
refrigerant in the A/C system by following the GAS ANALYSIS* operation
to avoid
eventual contamination of the gas present inside the unit.
!
If you are unsure of any point or have further questions, please do not hesitate to contact
our after-sales technical service or authorised distributor for advice.
Remember that during the recharging operations a certain quantity of refrigerant will be
present in the connecting tubes. To empty these tubes, follow the instructions under the
section End of work cycle.
!
At the end of the various work phases, various residual products will be present in the
containers. Dispose of these waste materials following the codes in force in your
Country.
All recovery, vacuum and recharging operations should be carried out with the vehicle
and the conditioning plant switched off (with the compressor disconnected from the
power supply).
N.B.
•
To test the quality of the gas to be recovered, our authorised dealers sell the Yokogawa gas analysis unit
specifically designed for the purpose, and for which C.T.R. srl is the exclusive distributor.
