Hitachi SJ7002 Series Instruction Manual page 272

6–24
Maintenance and Inspection
To install the new fan(s):
1. Slide the fan(s) into the mounting locations in the mounting
plate. To ensure the correct airflow, be sure that the label on
each fan faces toward the vent openings (top of inverter).
2. Connect the fan wiring to terminals J21 or J22 (depending on
the inverter model) on the main circuit board.
3. Put the mounting plate in position on the top of the inverter.
Press downward on the fan units until the retention tabs click
into place.
4. Replace the upper and lower front panel covers on the inverter,
using two (2) screws for each panel.
For inverters with sheet metal housings...
1. Loosen the screws that secure the lower front panel. Remove the panel from the inverter.
2. Turn OFF power to the inverter and confirm that the Charge Indicator LED is OFF.
3. Loosen the two screws that secure the upper front panel. Remove the panel from the
inverter.
4. Remove the screws that secure the fan unit to the top of the inverter.
5. Lift the cooling fan unit away from the top of the inverter housing.
6. Remove the defective fan(s) from the cooling fan mounting plate.
To install the new fan(s):
1. Slide the fan(s) into the mounting
locations in the mounting plate. To
ensure the correct airflow, be sure that
the label on each fan faces toward the
vent openings (top of inverter).
2. Connect the fan wiring to terminals J21,
J22, or J23 (depending on the inverter
model) on the main circuit board.
3. Put the mounting plate in position on
the top of the inverter housing and
secure it with screws.
4. Replace the upper and lower front panel covers on the inverter and secure them with screws.