Baldor Reliance Electric Motor 8040-SB-OPEN

SECTION: Section 3 – RENK Sleeve Bearing Replacement

Condition-based: replace when bearing liner is worn, damaged, or bearing temperature monitoring indicates excessive temperature

WARNING — Disconnect all electrical power from the motor windings and accessory devices before disassembly of the motor:

1. The sleeve bearing may be replaced without disturbing the setup and uncoupling from the driven equipment

Remove the top and bottom bearing liners as stated in RENK Sleeve Bearing Removal Instructions

2. Make sure that the shaft bearing shoulders and journal are free of nicks and burrs before replacing bearing

Dress shaft with emery cloth or stone as necessary

Clean the shaft and oil sump thoroughly

3. Apply a coating of oil to the bearing journal

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 3 – Anti-Friction Bearing (Grease Lubricated)

Ensure standard conditions are met (8 hrs/day, normal or light loading, clean ambient air at 40°C max)

Check motor nameplate for relubrication intervals and volumes

Refer to motor nameplate for recommended lubricant

Select alternate lubricants if necessary

Ensure use of clean, fresh grease from clean containers

Verify grease compatibility if mixing is required

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

Section 3 – Periodic Inspection

Listen for any abnormal noises and check cause immediately

Check for any vibration and check cause immediately if excessive vibration is found

Check voltage and frequency variations

Check power supply total harmonic distortion to avoid overheating

Check to see that air filters, when used, are in place and clean

Check all air passages and ensure that they are not blocked or clogged

Disconnect and lockout the power source

Section 3 – Sleeve Bearings (Oil Lubricated)

Select appropriate lubricating oil

De-energize the motor by opening the manual disconnect switches

Remove drain plug and drain oil

Flush out the housing by filling with fresh oil and drain again if oil is contaminated

Replace plug and fill through filler cap until oil level is at proper level indicated on sight gauge