Capacitor - Hitachi S1 Series Basic Manual

S1 series standard inverter
Cooling fan replacement

1. Stop the device, disconnect the AC power supply, and wait for a time no shorter than the waiting
time designated on the inverter.
2. Open the cable clamp to loose the fan cable.
3. Remove the fan cable.
4. Remove the fan with a screwdriver.
5. Install a new fan in the inverter in the reverse steps. Assemble the inverter. Ensure that the air
direction of the fan is consistent with that of the inverter, as shown in the following figure.
6. Power on the inverter.

8.4 Capacitor

8.4.1 Capacitor reforming
If the inverter has been left unused for a long time, you need to follow the instructions to reform the
DC bus capacitor before using it. The storage time is calculated from the date the inverter is
delivered.
Storage time
Less than 1 year
1 to 2 years
2 to 3 years
Read chapter 1 "Safety precautions" carefully and follow the instructions to
perform operations. Otherwise, physical injuries or damage to the device
may be caused.
Air
direction
Fig 8.1 Fan maintenance for inverters of 7.5 kW or higher
No charging operation is required.
The inverter needs to be powered on for 1 hour before the first running
command.
Use a voltage controlled power supply to charge the inverter:
Charge the inverter at 25% of the rated voltage for 30 minutes, and
then charge it at 50% of the rated voltage for 30 minutes, at 75% for
another 30 minutes, and finally charge it at 100% of the rated voltage
Rotating direction
Operation principle
-175-
Air direction