4-7
1. Check DC Buss voltage between Positive
(+) and Negative (-) terminals.
2. Unplug washer or disconnect power.
3. Connect voltage measurement equipment.
NOTE: Make sure voltmeter is set to
DC voltage of a setting higher than the
expected reading. Black and Red leads
of the meter need to be polarity sensitive.
Make sure black lead is in Negative port of
meter and it is touching Negative (-) contact
on inverter.
4. Plug in washer or reconnect power and
measure voltage.
5. Formula to determine DC Buss voltage
between Positive and Negative terminals
on the inverter is 1.4 x input voltage (for
example; 1.4 x 240VAC = 336VDC Buss
voltage).
6. Unplug washer or disconnect power.
7. If DC Buss voltage is 10% or more higher or
lower than expected, replace inverter.
5. Remove the cover of the D700 series
inverter to gain access to the motor
connections on the right side and the input
power connections on the left side.
(See page 3-52)
6. Measure voltage from Positive (+) to
Negative (-) terminals of the inverter.
NOTE: This voltage measurement must be
below 24VDC before attempting to remove
the inverter drive or contactor from the
washer. If voltage is not below 24VDC, wait
another 10 minutes and repeat step 6.
D700 Inverter
Input Power
Negative (-) Positive (+)
INVERTER DRIVE CHART
Model Inverter
Brand
Inverter D700 kW
Rating
MXR20 Mitsubishi 0.4kW
MXR25 Mitsubishi .75kW
MXR30 Mitsubishi .75kW
MXR40 Mitsubishi .75kW
MXR55 Mitsubishi 1.5kW
MXR65 Mitsubishi 1.5kW
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