Baldor Reliance Electric Motor 10840-SB-OPEN

Section 3 – Sleeve Bearings (Oil Lubricated)

Select lubricating oil based on conditions

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

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

Tighten caps and plugs, fill constant level oiler if provided

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

Perform periodic checks of phase, voltage, frequency, and power consumption of an operating motor

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

Section 3 – Checking Insulation Resistance

Check the insulation resistance of the stator winding with an insulation resistance meter

Record the insulation resistance reading

Investigate and take corrective action if there is a significant change in insulation resistance

Calculate the minimum insulation resistance (RM) using the formula RM = KV + 1

Compare insulation resistance readings to the calculated RM

Dry out the windings if insulation resistance is less than calculated RM

Bake in an oven at a temperature not to exceed 90°C until insulation resistance remains constant

Section 3 – Anti-Friction Bearing Removal/Replacement

Ensure equipment connected to the motor shaft cannot cause shaft rotation

Disconnect all electrical power from the motor windings and accessory devices

Replace bearing when worn, oversize, or when TRG/bearing temperature monitoring indicates excessive wear

Remove the bearing using a conventional bearing puller

Protect the shaft center using a spacer block of bass or soft material

Clean and inspect all parts, removing all old grease

Ensure all shaft bearing shoulders and journals are free of nicks

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

Remove packing to expose the shaft and remove the shaft shipping brace every 30 days

Rotate the shaft by hand 10 to 15 revolutions

Replace protective packing and shaft shipping brace after rotating the shaft

Inspect the motor periodically and check insulation resistance monthly

Is the storage location cold, damp, or humid?

Is the motor stored and directly exposed to weather conditions?