ABB PVS800-57B, Maintenance Manual, Page: 73 / 78

Maintenance 73
Re-installing the fan carriage of an inverter module
(If the inverter module was removed completely instead of only the fan carriage, proceed
to section
Re-inserting the inverter module into the cubicle below.)
The re-installation of the fan carriage is the removal procedure in reverse. See section
Removing and reinstalling the fan carriage of an inverter module (page 112 ).
Re-inserting the inverter module into the cubicle
WARNING! Obey the instructions in chapter Safety instructions . If you
ignore them, injury or death, or damage to the equipment can occur.
1. Make sure that there are no tools, debris or any foreign objects in the cubicle.
2. If not already in place, attach the module extraction/installation ramp (included) to the
base of the cabinet so that the tabs on the mounting bracket enter the slots on the
ramp.
3. Push the module up the ramp and back into the cubicle.
•
Keep your fingers away from the edge of the module front plate to avoid
pinching.
•
Keep a constant pressure with one foot on the base of the module to prevent
the module from falling on its back.
4. Secure the top front of the module with two screws. Tighten to 22 N·m (16 lbf·ft).
5. Secure the bottom front of the module with two screws. Tighten to 22 N·m (16 lbf·ft).
6. Remove the ramp.
7. Attach the DC busbars to the module. Tighten to 70 N·m (52 lbf·ft).
8. Reconnect terminal block [X30] at the top of the module.
9. Reconnect the wiring and fiber optic cables to the terminals on the front of the module.
10. Repeat the procedure for the other inverter modules.
11. Reinstall the shroud near the top of the cubicle.
Heat sink cleaning
Clean the main heat sink of the unit each time that you replace the fan assembly.
Before you start:
1. Remove the fan cover and the optical connector cover (refer to Removable covers).
2. Remove the fan assembly (refer to Speed-controlled main cooling fan or Direct-online
main cooling fan).
WARNING! Do not use compressed air or a vacuum cleaner on other parts of the
unit to prevent ESD damage.
To clean the main heat sink:
1. Blow clean and dry compressed air through the heat sink from bottom to top.
2. Use a vacuum cleaner with an ESD-protected nozzle at the top to catch the dust.