Test With Dummy Load; Pump Over-Temperature Test; Functional Test - Varian Turbo-V 70 PCB Mode D'emploi

Test with Dummy Load

− Connect the 48Ω or the 78Ω dummy loads to the
pump connector pins B, C, D, as shown in the
previous figure.
− Disconnect the potentiometer, set it to 10 KΩ, and
then reconnect it.
− Connect the power cable.
− Push the START and CURRENT pushbuttons and
check the front panel display as shown in the
following table.
During start-up
without
Soft Start mode
With
48Ω
dumm
y load
1.4 A
Current ±10%
80 W
Power ±10%
Speed 34
±4 KRPM
Temperature
52 °C
±2 °C
− Check the 3-phase ac output voltage.
After start up it should be:
42 Vac with 78Ω dummy load and
42 Vac with 48Ω dummy load.
Press the STOP pushbutton and remove the power
cable.
After
start-up
With With With
78Ω 48Ω 78Ω
dumm dumm dumm
y load y load y load
0.6 A 1.3 A 0.45 A
40 W 70 W 24 W
75 9 75
52 °C 52 °C 52 °C

Pump over-Temperature Test

− Disconnect the potentiometer, set it to 5KΩ, and
then reconnect it.
− Disconnect the dummy loads.
− Connect the dummy loads.
− Push the START pushbutton.
By pressing the CURRENT pushbutton, the
temperature reading should be 71 °C ±2 °C. All the
other values should be zero.
− Check the 3-phase ac output voltage.
It should be zero.
− Press STOP and remove the power cable.

Functional Test

Perform the functional test with the turbopump, taking
care to check the ramp sequence and start up time.
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TECHNICAL INFORMATION
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