13
LI 4431.00 (IT-EN)
Operating and maintenance instructions
EN
5.6 Commissioning
The pump is supplied without lubricating oil.
NOTE:
the operation without oil causes big damages to the pump.
Carry out the first filling up through the plug (E) up to the half of the sight glass (F) and
close the plug (E) (Figure 8).
Start the pump and take it to the maximum vacuum level for at least 2 minutes.
Stop the pump, check again the oil level and add the lacking oil, if necessary, in
order to get the correct oil level.
NOTE:
a quantity of oil greater than necessary may clog the oil separator and damage
the pump or the electric motor.
5.7 Tips for using
When the room temperature is lower than 10°C, it is a good practice to let the pump
operate at the ultimate pressure (Inlet port closed, without load) for about 15 minutes.
During this period the pump may not reach the stated pressure limits.
NOTE:
Avoid operating the pump for long periods with inlet port vented to atmospheric
pressure.
Avoid frequent stop-starting, as this will lead to premature wear of the coupling
elastic element.
It is recommended not to exceed 5 starting/hour. For more frequent starting, it is
recommended to install a soft starter device.
Fig.8