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CAH-SVX01A-EN 43
Startup
Once the Custom Climate Changer
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.
ƽ WARNING
Hazardous Voltage with
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.
Note: For additional information
regarding the safe discharge of
capacitors, see PROD-SVB06A-EN.
Pre-Startup
Checklist
Fan-Related Checks
• If the unit is internally isolated,
ensure that the fan isolator tie-
down bolts have been removed.
• 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.
– Fan sheaves should be tight
and aligned.
– Bearing set screws should be
torqued.
• Inspect the inlet vane assembly
for freedom of movement. If
resistance is above the
recommended torques, check the
assembly for any binding or
misalignment. Do not force the
vanes.
• Check fan drive belt tension.
• Inspect fan motor and bearings
for proper lubrication, if
necessary.
• Check the motor lubrication, if
necessary.
– Remove and clean grease
plugs.
– Check for moisture in the
grease. If moisture is present,
remove the motor and send it
to an authorized repair shop
for bearing inspection/
replacement. If no moisture is
present, refer to the motor
manufacturer’s lubrication
recommendations for proper
lubrication.
• Check the motor lubrication, if
necessary.
– Remove and clean grease
plugs.
– Check for moisture in the
grease. If moisture is present,
remove the motor and send it
to an authorized repair shop
for bearing inspection/
replacement. If no moisture is
present, refer to the motor
manufacturer’s lubrication
recommendations for proper
lubrication.
Coil-Related Checks
CAUTION
Proper Water Treatment!
The use of untreated or improperly
treated water in coils may result in
scaling, erosion, corrosion, algae, or
slime. Engage the services of a
qualified water treatment specialist
to determine what water treatment,
if any, is required. Trane assumes no
responsibility for equipment failures
that result from untreated or
improperly treated water.
• 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.
Motor-Related Checks
• Check motor winding. An
acceptable winding resistance
reading is from 6 meg-ohms to
infinity. If reading is less than
5 mega-ohms, the winding
should be dried out in an oven or
by a blower.
• Inspect the entire motor for rust
and corrosion.