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AFDG/AFDU Startup Procedure
NOTICE
Perform Visual Inspection!
Before powering up this drive for the first time conduct
a visual inspection for the following:
•
Shipping damage.
•
Signs of moisture.
•
Signs of debris or dust from storage.
•
Signs of corrosion on components and/or enclosure.
These conditions could cause equipment damage. Do
not power up equipment if you have concerns
regarding equipment condition. Upon initial power up,
remain in the area for the first two hours of operation
and observe the chiller and drive for any abnormalities.
Contact CenTraVac™ Chiller Technical Support for
assistance if needed.
WARNING
Hazardous Voltage!
Failure to follow the instructions below could result in
death or serious injury. Be sure all enclosure doors are
closed and properly secured with fasteners when
operating equipment.
The air-cooled adaptive frequency drive is remote-
mounted (AFDG) or unit-mounted (AFDU) on CenTraVac™
chillers. The remote-mounted AFDG requires some
programming in the field; the unit-mounted AFDU is
completely programmed at factory. Follow the procedure
below when starting the water chiller and drive.
1. The UC800 is the primary controller for the
CenTraVac™ chiller and is located in the control panel.
The UC800 starts, stops, and monitors all unit and
AFDG/AFDU run functions.
Complete all items on the commissioning checklist and
in the startup procedures for the chiller as defined in
the chiller Installation, Operation, and Maintenance
manual, or other applicable manual.
34
WARNING
Hazardous Voltage w/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.
Failure to follow the instructions below could result in
death or serious injury. DC bus capacitors retain
hazardous voltages after input power has been
disconnected. Follow proper lockout/tagout procedures
to ensure the power cannot be inadvertently energized.
after disconnecting input power, wait ten (10) minutes
for the DC capacitors to discharge and then check the
voltage with a voltmeter to ensure the DC bus
capacitors are discharged before touching any internal
components.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06*-EN
2. Check the following on the drive:
a. Make sure input wire sizing to the drive is sized
correctly based on unit nameplate voltage, and
connected as noted in this manual.
b. Check the drive ground connection as detailed in
"Input Power and Control Wiring," p.
cabinet wire routing and grounding.
3. Check all drive wiring and connections in the drive to
make sure they are tight and free of any shipping
damage.
4. AFDG/AFDU control checkout: Use the Tracer® TU
service tool.
a. Confirm the starter LLID has been properly bound
and is recognized by the unit controls. If two starter
LLIDs are shown, unbind both and then rebind the
starter LLID.
b. CHILLER Setpoints: As with any new chiller, first
check out all UC800 setpoints for the Chiller.
c. AFD Setpoints: Check out all AFD setpoints (refer to
"Drive Settings," p.
d. AFD Configuration: Verify the correctness of the
"Sales Order" specific setpoints in the "Starter
Configurations for AFD Starters." These settings are
specific to unit/motor combination in the drive. All
of the remaining settings are factory-determined
default setpoints that are the same on all AFDG/
AFDU air-cooled drives.
19, check
35).
AFDG-SVU01L-EN
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