Baldor Reliance Electric Motor 9240-SB-API

Section 3 – Semi-Annual Maintenance − 6 months

Perform all quarterly inspections (see 3 Monthly Motor Periodic Inspection task)

Inspect and clean rotor ends, windings and fan blades (Open Motors only)

Check electrical connections for tightness and absence of corrosion

Section 3 – Winding Maintenance

WARNING — Solvents can be toxic and/or flammable — follow manufacturer's safety procedures and directions — failure to observe this precaution could result in bodily injury

CAUTION — Do not use solvents containing trichloroethane to clean interior or exterior of motor — damage may occur to paint and insulation systems

Disconnect and lockout the power source

Ensure no power is applied to the motor

Section 1 – Storage (less than 6 months) – Horizontal Motors with Sleeve Bearings

Fill the bearing oil reservoir to the indicated level with the proper lubrication oil

Rotate the shaft 10-15 revolutions to redistribute the lubricant

Pour 4 to 6 ounces of oil onto the bearing liner before rotating the shaft

Ensure Duty Master motors with oil lubricated sleeve bearings are filled with oil containing a rust inhibitor

Check air filters for high velocity air speeds up to 600 FPM (3 m/s) net face velocity

Measure resistance to air flow of a clean filter

Is the resistance to air flow of a clean filter within 0.15" W.G. (37 N/m² gauge)?

Check if the static air pressure drop across the filters reaches 0.50" W.G. (123.3 N/m² gauge)

Is the static air pressure drop across the filters at or above 0.50" W.G. (123.3 N/m² gauge)?

Check if the Differential Air Pressure Switch activates at 0.5" W.G. differential

Are the air filters in place and clean?

Clean or replace air filters if pressure drop reaches threshold or if Differential Air Pressure Switch activates

Section 1 – Storage (less than 6 months)

Ensure grease lubricated bearings are not lubricated during storage

Verify Duty Master anti-friction bearing motors are shipped with the proper amount of grease in each bearing

Record the number of days since last shaft rotation

Replace protective packing and shaft shipping brace after rotating the shaft

Inspect the motor periodically and check insulation resistance

Is the storage location cold, damp, or humid?

Apply power to the motor's space heater if installed

Section 3 – Anti-Friction Bearing (Grease Lubricated) – Extreme Conditions

Follow lubrication procedure as for the 6 Monthly task

Check relubrication intervals and volumes on the main motor nameplate

Ensure grease is free of dirt to avoid damage to motor bearings

Is the shaft stationary and motor warm?

Stay clear of rotating parts and electrical circuits if lubrication is done with motor running