Trane Performance Air Handlers Installationshandbuch PDF herunterladen (Seite 75)

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CAH-SVX01B-EN 75

Start-Up

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.

 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

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. Damper blade and linkage positioning may

have changed due to shipping and handling vibration.

• Check that air filters are in place and positioned properly.

• Remove any debris from the unit interior.

• Close and secure all unit access doors.

Note: UL-listed units require a removable latch on access doors. The door clip shipped with the

unit meets this requirement.

• Inspect electrical connections to the unit and unit controllers.

– Connections should be clean and secure.

– Compare the actual wiring with the unit diagrams.

– Reference the appropriate controller manual for more details about starting units with

factory-mounted controls.

• Leave this manual with the unit.

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.

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