Test With Dummy Load; Pump Over-Temperature Test; Functional Test - Varian Turbo-V 70 969-9405 Manual De Instrucciones

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.
− On the controller front panel 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
Current ±10%
1.4 A
Power ±10%
80 W
Speed 34
±4 KRPM
52 °C
Temperature
±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.
On the controller front panel, 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 power cable.
− On the controller front panel push the START
pushbutton.
The display should be as shown in Fig. 4-4 and by
pressing the
temperature reading should be 71 °C ±2 °C. All the
other values should be zero.
− Check
the
It should be zero.
− On the controller front panel, 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.
68
TECHNICAL INFORMATION
CURRENT pushbutton
3-phase ac output
87-900-868-01 (C)
the
voltage.