Engineered Air HVAC Unit LM-15-K

Lubrication of Dodge Fan Bearings — Ball Bearing Pillow Block

Select the shaft diameter and speed (RPM) for lubrication schedule

Is it safe to re-lubricate while running?

Re-lubricate while running until some purging occurs at seals

Adjust lubrication frequency based on purged grease condition

Record hours of operation, temperature, and surrounding conditions

Select the grease type used for lubrication

Lubricate bearings prior to extended shutdown or storage

Check set screws on fan wheel, fan bearings, fan and motor pulleys for looseness on the shaft

Tighten set screws where required

Ensure not to overtighten set screws to avoid damage to bearings

Bearing Setscrew Torques by shaft diameter and bearing manufacturer

Dodge SC 203-215 series torques by shaft diameter

Refer to bearing manufacturers’ literature for all other types of bearings

Is the bearing temperature under 158°F (70°C)?

Is the environment dusty and wet?

Select shaft diameter for grease quantity

Use lithium base lubricant for greasing

Ensure not to overgrease the bearings

Refer to fan and/or bearing manufacturers’ literature for additional information

Enter the static pressure drop provided in the Unit Function

Does the bypass damper setting match the specified static pressure drop?

Adjust the bypass dampers to match the static pressure drop if necessary

Ensure proper airflow across the DX coil when mechanical cooling is operating

Is the airflow balanced after adjustment?

Electric Heat — Electrical Inspection

Check and tighten all electrical connections to heating elements

Check and tighten all electrical connections to contactors

Check and tighten all electrical connections to terminals

Check and tighten all electrical connections to main power lugs