120 RT-SVX34C-EN
Maintenance
Monthly Maintenance
WARNING
Hazardous Voltage!
Disconnect all electric power, including remote disconnects before servicing. Follow proper
lockout/tagout procedures to ensure the power can not be inadvertently energized. Failure to
disconnect power before servicing could result in death or serious injury.
Before completing the following checks, turn the unit OFF and lock the main power disconnect
switch open.
Filters
• Inspect the return air filters. Clean or replace them if necessary. Refer to the table below for filter
information.
Cooling Season
• Check the unit’s drain pans and condensate piping to ensure that there are no blockages.
• Inspect the evaporator and condenser coils for dirt, bent fins, etc. If the coils appear dirty, clean
them according to the instructions described in “Coil Cleaning” later in this section.
• Inspect the F/A-R/A damper hinges and pins to ensure that all moving parts are securely
mounted. Keep the blades clean as necessary.
• Manually rotate the condenser fans to ensure free movement and check motor bearings for
wear. Verify that all of the fan mounting hardware is tight.
Table 66. Filters
Unit Model Quantity
Filter Dimension
(inches)
TC, TE, YC*330 - 420 16 15½ X 19½ X 2 or 4*
TC, TE, YC*480 & 600 17 15½ X 19½ X 2 or 4*
* Filter dimensions are actual. Nominal filter size is 16 x 20.
Figure 57. Belt Deflection
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