Removal Procedure - Toshiba E3 Manual

1.2 Removal Procedure

Removal of the N2 interface board from a EIII inverter should only be performed by a
qualified technician familiar with the maintenance and operation of the EIII. In order to
protect the interface board connector's reliability, do not repeatedly connect and
disconnect the interface board. Use the following procedure if it becomes necessary
to remove the N2 interface board from the inverter.
CAUTION!
the inverter. Removing the interface board with power applied may damage the
inverter.
CAUTION!
1.
been turned OFF and are locked and tagged out.
DANGER!
2.
capacitors to discharge before proceeding to step 3. Do not touch any internal
parts with power applied to the inverter, or for at least 5 minutes after
power to the inverter has been removed. A hazard exists temporarily for
electrical shock even if the source power has been removed.
3. Remove the inverter's cover (open the door on units with hinged doors).
Verify that the CHARGE LED has gone out before continuing the removal process.
4. Loosen the 4 screws attaching the operation panel support bracket to the control
board support bracket and remove the operation panel and support bracket as a unit
(refer to Figure 3).
CAUTION!
5.
device. Standard electrostatic-sensitive component handling precautions should
be observed. Release the 4 corners of the interface board from the standoffs by
pressing down on the standoff locking tabs with a small flat-headed screwdriver.
Be careful to not apply any abnormal stress to the interface board while performing
this, as this may damage the interface board or control board connectors.
6. Remove the interface board from the inverter.
7. Disconnect the N2 bus cable from the interface board connector (TB1), and pull
the cable out through the access holes at the bottom of the inverter.
8. Carefully re-install the operation panel and support bracket and tighten the 4
screws that attach the operation panel support bracket to the control board
support bracket.
9. Reinstall the inverter's cover (close and latch the door on units with hinged doors).
DANGER!
door open.
Do not remove the interface board while power is applied to
Verify that all input power sources to the inverter have
Wait at least 5 minutes for the inverter's electrolytic
The communications interface is a static-sensitive
Do not operate unit with the cover off / cabinet
8