Technical data

3.9 Removing the Power Supply
NOTE: The illustrations in this section show the BA440 enclosure.
Duplicating the same basic illustrations for the BA430 enclosure is
unnecessary. The removal procedures are the same for both enclosures.
The BA430/BA440 enclosure has one power supply Figure 3–22. To remove
the power supply, follow the procedure carefully.
Danger High Voltage
.
This warning symbol indicates risk of electric shock.
WARNING: The power cord must be removed from this unit’s appliance
inlet to disconnect ac power. The circuit breaker power switch is NOT a
disconnect device.
A plate covers one fastener that secures the system to the BA430/BA440
enclosure in such a way that the power cord set must be removed before this
fastener can be disconnected. This fastener MUST BE TIGHTENED when
service is completed before replacing the power cord.
NOTE: The power supply stores an electrical charge which, if not bled
(discharged) correctly, could cause physical harm. Bleed the power supply
before removing. To bleed the power supply, remove the power cord and push
up on the metal plate on the bottom of the power supply. This sliding plate
depresses the bleed switch or button located under the power supply. Hold
the discharge plate in the up position for at least 45 seconds after removing
the ac power cord. This discharges the system and makes the power supply
safe to handle.
3–32 BA430/BA440 Enclosure Maintenance