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
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
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
•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
•Inspect the entire motor for rust and corrosion.
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