5–34 Part Replacement Procedures
Publication 1336 IMPACT-6.8 – November, 2002
!
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.
Important: Before you remove connections and wires from the
drive components, mark the connections and wires to
correspond with their component connections and
terminals to prevent incorrect wiring during assembly.
2. Remove the buses at the DC Input Lines.
3. Disconnect the Ground Fault CT harness from the harness that
goes to the Gate Driver Board.
4. Remove the nut and washer on the lead bolted to the top of the
Inverter Assembly.
5. Cut the cable ties and slide the Ground Fault CT up and off the
DC Input Lines.
Installation
Install the Ground Fault CT in reverse order of removal. Refer to
Fastener Torque Specifications in Chapter 3 – Access Procedures.
!
ATTENTION: Replace all guards before applying
power to the drive. Failure to replace guards may result
in death or serious injury.
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