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where: XX =indicates the rotational speed (42 KRPM for high speed,
or 28 KRPM for low speed).
Operating the Pump
After the starting period, if the system has a vacuum leak or the
pressure in the pump/chamber is high (from 1 mbar to atmosphere),
the pump continues to operate indefinitely.
If the gas load at the turbopump inlet flange continues to stay high,
the power drawn by the turbopump increases up to the maximum
value. Than the Turbo-V pump is slowed down in proportion to the
gas load at least until it reaches about 3 KRPM display shows:
N
1
even if any previous display selection was made.
This will occur either in NORMAL operation or with the LOW SPEED
selected.
As soon as the gas load decreases, the pump will automatically
accelerate to reach normal operation.
The pump can be stopped at any rotational speed and can be
restarted at any rotational speed from either the front panel buttons
or the remote connections.
The controller automatically synchronizes the output to the
rotational speed of the pump and then accelerates linearly up to the
nominal speed or within steps if the Soft Start has been selected.
Turbo-V 1000HT PCB Controller User Manual / 87-900-906-01 (F)
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Technical Information
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Use
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