D135-10-880C - Operation
Page 68
Partial flow setup for the ELD500 FLEX
Softkey 7: Fore-pump type
The ELD500 FLEX with partial flow system can be operated with a dry (for example, Scroll
pump) fore-pump or a wet pump (oil sealed).
This key is for choosing a wet (oil sealed) fore vacuum pump.
Softkey 2:
The entry of the nominal pumping speed of the partial flow pump can be decreased. The
minimum pumping speed is 4 m
3
/h.
Softkey 3:
Decrease Quick-pump time. The quick-pump time defines whether and how long valve V10
of the partial flow block is opened. (For detailed descriptions, refer to the operating
instructions of the partial flow adaptor.)
At TQ = 0 seconds valve V10 will not be open for the time being. This selection is
recommended for large volumes and dirty objects.
At TQ = endless valve V10 will open when pressing start. At an inlet pressure p1 < 15 mbar
the ELD500 switches to measurement mode and display leak rates. This is recommended if
it is acceptable to wait for a while until measurement mode is reached and leak rate
reading at high inlet pressures are not needed.
With times between 0 and endless V10 is opened and the leak detector tries to reach a inlet
pressure of less than 15 mbar within this time TQ. When TQ has gone by V10 is closed and
the ELD500 switches to measurement mode (Helium/Hydrogen comes through the orifice
of the partial flow valve block).
Softkey 4: Changing behaviour of the valve V8 of the partial flow adaptor
Closed: In partial flow mode valve V8 (see instruction manuals for the partial flow adaptor)
switches dependent on the inlet pressure
Open: Valve V8 stays open, even when the inlet pressure is low enough
Softkey 5: ?
Help text.
Softkey 6:
Increase the pumping speed of the partial flow pump. The entry of the nominal pumping
speed of the partial flow pump can be increased. The maximum pumping speed is 80 m
3
/h.
Default setting is 25 m
3
/h.
Softkey 7:
Increase of the quick-pump time up to the maximum.
To Next Page
Loading...
