BUCHI Vacuum Pump V-710 - Manual (Page 25)

4 Description of function
25 V-700/710 Operation Manual, Version E
The LEDs indicate the operating state of the system:
c LED ON/OFF
• Permanent light: The system is ready to operate
• LED flashes: The system is in Continuous mode
d LED PROCESS STATUS
• Permanent light: The system has reached the possible end vacuum
• LED flashes: The system searches the constant end vacuum
4 .5 ECO 2 Mode
The ECO 2 Mode only becomes active when the Vacuum Pump V-700/710 is operated as stand-alone
system, i.e. without a vacuum controller.
The ECO² Mode works as follows:
• During the first hour of operation the pump operates at a speed of 100%.
• After one hour of operation without interruption the pump automatically reduces its speed to 80%
and operates at this speed for another hour. The end vacuum of 10 mbar (V-700) or 2 mbar
(V-710) is not affected by this action, only the evacuation speed is reduced.
• After a total time of two hours of constant operation the pump reduces its speed again to 50% of
its total capacity. The end vacuum of 10 mbar (V-700) or 2 mbar (V-710) is again not affected by
this action, only the evacuation speed is reduced.
• If the pump is switched off and on again, it starts at its full speed and will change to the ECO²
Mode after one hour of constant operation (see above).
NOTE
The new ECO² Mode only reduces the suction power. The end vacuum is not affected.
4 .6 Vacuum connections to the valve unit or Woulff bottle
a Connection to vacuum pump
b Connection to an additional instrument
c Connection to vacuum controller
d Connection to Rotavapor
Fig. 4.13: Connections at the valve unit or Woulff bottle
1
2 3
4