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Recommended Periodic Maintenance and Inspection
Visual Inspection—Power
Removed
WARNING
Hazardous Voltage with Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by Trane
or others, refer to the appropriate manufacturer's
literature for allowable waiting periods for discharge of
capacitors. Verify with an appropriate voltmeter that all
capacitors have discharged.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN.
1. Ensure the door interlocks are present and working.
2. Verify the safety ground connections to the door
panels are securely connected.
3. Inspect power wire cables and devices to assure no
abrasion is occurring from vibrations against chassis
of cabinets, or other edges.
4. Ensure the drive interior and exterior is clear of any
dust or debris. Fans, circuit boards, vents, etc. must be
clean. Only use a vacuum for cleaning. Do NOT use
compressed air.
5. Inspect the interior of the drive for any signs of
moisture entry or leakage.
6. Visually inspect all drive components and wiring. Look
for signs of heat or failure (look for swelled or leaking
capacitors, discolored reactors or inductors, broken
pre-charge resistors, smoke or arc trails on MOVs and
capacitors, etc.)
7. Closely inspect the motor terminal board for any signs
of leakage, arcing, etc.
8. Check ALL cable/lug/terminal connections inside the
drive enclosure. Ensure all are clean and tight, and not
rubbing against each other anywhere.
66
Operational Inspection—Power
Applied
WARNING
Live Electrical Components!
During installation, testing, servicing and
troubleshooting of this product, it may be necessary to
work with live electrical components. Have a qualified
licensed electrician or other individual who has been
properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical
components could result in death or serious injury.
1. Verify the drive cabinet cooling fans are operating. This
should be done from outside the enclosure, by looking
into the cabinet at door and cabinet vents, to avoid
electrical hazards.
Note: The power module fan comes on with power.
Other fans cycle with drive operation.
2. Check historic fault codes using LCP connected to the
AFD.
3. Check configuration settings and confirm all proper
settings are still present in the controls.
4. Review the diagnostic history.
5. Make Chiller Service report to document all setpoints.
6. Check the UC800 alarm histories for any indications of
operational problems.
Do this every 1–12 months depending on
operating environment.
To properly diagnose service issues for Adaptive
Frequency Drives for centrifugal chillers equipped with
AFDR starters, all UC800 chillers will be equipped with the
LCP as standard on the drive power module. This is for
service only and NEVER for machine operation.
AFDR-SVN001D-EN
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