TECHNICAL INFORMATION
65
87-900-871-01 (B)
Test with Dummy Load
−
Connect the 48
Ω
or the 78
Ω
dummy loads to the
pump connector pins B, C, D, as shown in the
previous figure.
−
Disconnect the potentiometer, set it to 10 K
Ω
, 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
After
start-up
With
48
Ω
dumm
y load
With
78
Ω
dumm
y load
With
48
Ω
dumm
y load
With
78
Ω
dumm
y load
Current
±
10%
1.4 A
0.6 A
1.3 A
0.45 A
Power
±
10%
80 W
40 W
70 W
24 W
Speed
±
4 KRPM
34
75
9
75
Temperature
±
2
°
C
52
°
C
52
°
C
52
°
C
52
°
C
−
Check the 3-phase ac output voltage.
After start up it should be:
42 Vac with 78
Ω
dummy load and
42 Vac with 48
Ω
dummy load.
Press the STOP pushbutton and remove the power
cable.
Pump over-Temperature Test
−
Disconnect the potentiometer, set it to 5K
Ω
, 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.