Operation - Rothenberger ROREC Pro Digital Instrucciones De Uso

Error messages:
The following error messages can appear on the display:
LP E1: The low pressure sensor is not attached
HP E1: The high pressure sensor is not attached
E2: The feed voltage is too low
E3: The feed voltage is too high
E4: The motor is overloaded
General comments:
Always use the device with a refrigerant filter to avoid damaging the compressor!
The device can be controlled using a fill level sensor. Recovery bottles with this function are not
however available in all countries. The so-called OFP cable (orange) is supplied for this function.
If the extraction unit and the Recovery bottle are connected together using this cable, automatic
switching off occurs and the OFP LED lights up as soon as the bottle is 80% filled. If the cable is
only connected to the device and not to the bottle, it cannot be started.
Always store the device with closed off connections and put the operating button
in the CLOSE position!
General settings:
Calibration of pressure sensors:
The device is fitted with a manual calibration function. If the display shows a pressure even
though there is no device attached the sensors can again be set to 0 bar.
 To calibrate, hold the menu button down for 5 seconds. A signal tone sounds and the sen-
sors are set to 0.
Please note that calibration is only possible when the displayed pressure is less than 2 bar.
Low pressure switch off:
The device is fitted with a low pressure switching off function (triggers at -20 inHg), which pro-
tects the internal components against operation without a lubricant and prevents evacuation of
the refrigeration cycle. The LP lights up upon reaching this value. There are various modes
available for this switching off:
a. Lp0: Upon reaching -20inHg the device does not switch off (ATTENTION: no protection for
internal components)
b. Lp1: As soon as the limit value for 20 seconds is reached, the device switches off automati-
cally
c. Lp2: As soon as the limit value for 20 seconds is reached, the device switches off automati-
cally The device switches on again as soon as the pressure increases again and exceeds 0
bar. This mode is set as standard on newly delivered devices.
Please proceed as follows to set the various modes:
 Hold the menu button for about 8 seconds. A signal tone already sounds after 5 seconds
which refers to calibration of the sensors. Despite this continue to hold down the menu but-
ton further.
After 8 seconds the currently selected mode appears on the display. Through rapid tapping on
the menu button one can now switch between the modes. Inactivity for about 3 seconds leads to
saving of the currently selected value.
4.3

Operation

Standard liquid/gas retrieval:
 Check whether the operating conditions of the cycle are correct.
Ensure that all connections are correctly and firmly tightened.
 Open the liquid connection of the recycling bottle.
ENGLISH 13