48
CLCH-SVX009A-EN
Start-Up
Pre-Startup Checklist
Once the air handler has been assembled and installed,
attention must be directed to individual components for
proper operation. Before operating the unit, complete the
pre-startup checklist.
General Checks
•
Ensure the unit has been installed level.
•
Ensure supply-air and return-air ducts have been
connected.
•
Ensure damper operator motors and connecting
linkage have been installed.
•
Verify damper operation and linkage alignment.
•
Check that air filters are in place and positioned
properly.
•
Remove any debris from the unit interior.
•
Remove all foreign material from the drain pan and
check drain pan opening and condensate line for
obstructions.
•
Close and secure all unit access doors.
•
If differential pressure switch is provided on filter rack,
adjust per system requirements.
•
Inspect electrical connections to the unit
–
Connections should be clean and secure.
–
Compare the actual wiring with the unit diagrams.
•
Check piping and valves for leaks. Open or close the
valves to check for proper operation. Drain lines should
be open.
•
Leave this manual with the unit.
Fan-Related Checks
•
If the unit is not externally isolated, ensure that the fan
isolator tie-down bolts have been removed. See
“Remove Shipping Tie-Downs” section on page 19
for
more information.
•
Rotate all fan wheels manually to confirm they turn
freely in the proper direction.
•
Check fan shaft bearings, fan wheel, and drive sheave
set screws for proper torque settings (see
Table 16 on
page 53
.
–
Fan sheaves should be tight and aligned.
•
Check fan drive belt tension. See
“Tension the Fan
Belt” section on page 51
.
•
Inspect fan motor and bearings for proper lubrication,
if necessary. See
“Fan Bearing Lubrication,” page 61
.
Coil-Related Checks
:
•
Ensure coil and condensate drain piping connections
are complete.
•
Check the piping and valves for leaks.
–
Open or close the valves to check operation.
–
The drain lines should be open.
•
If unit has a refrigerant coil, ensure that it has been
charged and leak-tested according to the instructions
provided with the condenser equipment. Adjust the
superheat setting.
•
Remove all foreign material from the drain pan and
check the pan opening and condensate line for
obstructions.
•
For steam coils, slowly turn the steam on full for at least
10 minutes before opening the fresh air intake on units
with fresh air dampers.
WARNING
Hazardous Voltage w/Capacitors!
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 disconnect
power and discharge capacitors before servicing could
result in death or serious injury.
For additional information regarding the safe discharge
of capacitors, see PROD-SVB06A-EN
NOTICE:
Proper Water Treatment!
The use of untreated or improperly treated water in
coils could result in scaling, erosion, corrosion, algae or
slime. It is recommended that the services of a qualified
water treatment specialist be engaged to determine
what water treatment, if any, is required. Trane
assumes no responsibility for equipment failures which
result from untreated or improperly treated water, or
saline or brackish water.
