Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 15
3.2
Applying Power
Remove all fuses before applying power. Reinsert the fuses, one circuit at a time,
checking each circuit before adding the next.
It is recommended that you start up the controller in Inspection mode, which can be
done by opening the Inspection Switch, or removing the field wire(s) from terminal 23.
WARNING: The field wire in terminal 23 is HOT. If it is removed,
make sure it is insulated and labeled. Reconnect it when the car is to
be taken off Inspection Operation.
3.2.1
Motor Rotation
Check that the motor is rotating in the proper direction by turning on the power, then
briefly pushing in the motor starter ("PM" on across-the-line installations, "STR" on Wye-
Delta installations). Observe the direction of rotation of the motor, and if it is incorrect,
reverse any two of the main power leads at the main line disconnect.
If a Reverse Phase relay is provided, check that the OK light is on when power is applied
to it. If it is not, then reverse any on the two wires connected to the A,B,C terminals.
3.3
Temporary Run Connections
To run the car on temporary service before the controller is fully installed, see the
MH3000 Temporary Run Manual
.
