Routine Maintenance
The following checklist is provided as an abbreviated guide to periodic maintenance. Detailed procedural information is given after this checklist.
WARNING Hazardous Service Procedures!
The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. When possible, disconnect all electrical power including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not 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.
When servicing fans or ductwork, secure the impeller to physically restrict rotational movement. When necessary to work with live electrical components, have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks. Failure to follow all of the recommended safety warnings provided, could result in death or serious injury.
Table 5. Routine maintenance checklist
Frequency | Maintenance |
After 48 hours | Belts have acquired their permanent set. Readjust but do not overtighten. See the “Tension the Fan Belt” section on |
of operation | page 45 for more information. |
|
|
Every week | Observe unit weekly for any change in running condition and unusual noise. |
Every month | • Clean or replace air filters if clogged or dirty; coat permanent filters with oil after cleaning. See the “Air Filters” section |
| on page 49 for more information. |
| • Relubricate fan bearings if necessary. See the “Fan Bearing Lubrication” section on page 51 for more information. |
| • Check and adjust fan belt tension. |
|
|
Every three to | • Check fan bearing grease line connections. Lines should be tight to the bearings. |
six months | • Check bearing and motor bracket bolt torque and bearing setscrew torque. |
| • Align fan and motor sheaves. Tighten sheave set screws to the proper torque. See the “Sheave Alignment” section on |
| page 47 for more information. |
| • Inspect and clean drain pans. See the “Drain Pans” section on page 50 for more information. |
| • Tighten electrical connections. |
| • Inspect coils for dirt |
|
|
Every year | • Inspect the unit casing for corrosion. If damage is found, clean and repaint the surface with a |
| and vinyl chlorinated lacquer. |
| • Clean the fan wheels and fan shaft. See the “Fans” section on page 50 for more information. |
| • Inspect and clean drain pans. |
| • Check damper linkages, set screws, and blade adjustment. Clean, but do not lubricate, the nylon damper rod |
| bushings. |
| • Clean damper operators. |
| • Inspect electrical components and insulation. |
| • Inspect wiring for damage. |
| • Rotate the fan wheel and check for obstructions in the fan housing. The wheel should not rub on the fan housing. |
| Adjust the center if necessary and tighten wheel set screws to the proper torque. |
| • Lubricate motor bearings in accordance with motor manufacturer’s recommendations (see the “Fan Bearing |
| Lubrication” section on page 51 for more information). |
| • Check condition of gasketing and insulation around unit, door and dampers. |
| • Examine flex connections for cracks or leaks. Repair or replace damaged material. |
|
|
48 |
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