3–23
Access Procedures
Publication 1336 IMPACT-6.8 – November, 2002
Pulling the Inverter Assembly
The Inverter Assembly must be pulled out to access internal
components such as Power Modules.
The assembly has wheels that roll in tracks built into the base of the
drive. Chocks bolted into the tracks prevent assembly movement. The
drive itself also has wheels, built into the main framework of the drive.
Removal
!
ATTENTION: To remove the Inverter Assembly
safely requires two persons. Attempting to remove
either assembly by yourself may result in death or
serious injury.
!
ATTENTION: The assembly weighs about 225 kg
(500 pounds). Before you pull it from the drive, you must
have a platform in place to hold the assembly. You cannot
remove the assembly without a platform. The top of the
platform must be even with the assembly’s track. The
platform must be strong enough to support the assembly
and the personnel servicing the drive. Refer to Figure
3.16 in this chapter.
!
ATTENTION: Do not remove both the Inverter and
the Capacitor Bank assemblies at the same time.
!
ATTENTION: Disconnect and lock out power from
the drive before disassembling the drive. Failure to
disconnect power may result in death or serious injury.
Verify zero bus voltage by measuring the voltage
between the Negative Capacitor Bus and both ends of
all three bus fuses. An open fuse does not show voltage
across both ends of the fuse. Failure to measure voltage
at both ends of the fuses may result in death or serious
injury. Refer to Figure 3.5. Do not attempt to service the
drive until the bus voltage has discharged to zero volts.
Содержание Allen-Bradley IMPACT 1336 Series
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