York Rooftop Unit Y14FC05C1LABAB

Is the unit equipped with power exhaust fans or a return air fan?

Belt Tension Adjustment Procedure

Loosen the four bolts holding the motor base to the channels

Adjust the belt by turning nuts 'A' (see detail 'B')

Apply a perpendicular force to one belt at the midpoint of the span using a belt tension checker

Enter the deflection distance obtained (in inches)

Select the fan type and motor horsepower

Review the installation for any errors, leaks, or undesirable system effects

Ensure blower speed changes are made by qualified personnel

Enter the PD of the standard sheave

Calculate the PD of the new sheave using the formula: (Specified CFM/Measured CFM) X PD of standard sheave

Select the new motor sheave based on the calculated PD and reference tables

Label all wires prior to disconnection when servicing controls

Verify proper operation after servicing

Filter Inspection and Replacement

Replace or clean filters as necessary

Ensure the dimensional size of the replacement filter is the same as the replaced filter

Ensure power is disconnected from the unit before maintenance

Is the bypass VFD switched by hand on the front of the bypass enclosure?

Verify switch positions for normal running

Select the operating speed (RPM)

Label all wires prior to disconnection

Check outdoor fan motors for any visible damage

Is lubrication of outdoor fan motors desired?

Inspect vendor motors for any visible damage

Verify proper operation after servicing