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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

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Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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WorldWide Electric Corporation Induction Motor NATJ13-36-56JB

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Maintenance Plans for WorldWide Electric Corporation Induction Motor Model NATJ13-36-56JB

Integrate maintenance plans directly into your work orders in MaintainX.

500 Hourly Motor Inspection

Maintenance

Ensure ventilation openings are clear and unobstructed

Inspect the condition of shaft seals and replace if necessary

Check the condition of connections and mounting and assembly bolts

Bearing Condition Check

Listen for any unusual noise from the bearings

Record vibration measurement

Measure bearing temperature

Inspect spent grease

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Initial Motor Mounting Inspection

Mounting

Ensure the underside of the motor feet and/or flange is clean and free of dirt.

Is the motor level?

Remove any masking materials or rust inhibitive coating from the mounting surface and shaft.

Verify ball bearing motor mounting positions as per NEMA MG1-4.03

Is the motor used with an elastic coupling system?

Is the rigid coupling system avoided unless previously agreed?

Ensure motor is securely installed to a rigid foundation or mounting surface.

Remove drain plugs from the end shield or frame on totally enclosed motors.

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Initial Motor Startup Check

Start Up

Disconnect the load when starting the motor, ensuring the key is removed from the shaft.

Check direction of rotation. Is the direction correct?

If rotation must be changed, describe the steps taken to interchange power leads.

Is the motor starting quickly and running smoothly when coupled to the load?

If the motor does not start quickly and run smoothly, describe the observed issues and possible causes.

Enter the motor current after a few minutes of operation.

Is the motor current within the acceptable range based on the nameplate rating and service factor?

When using AC motors with frequency inverters, is the maximum speed rating not exceeded?

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30 Daily Storage Winding Insulation Resistance Testing

STORAGE

Measure and record the resistance of the winding insulation every 30 days of storage.

TESTING

Check the insulation resistance of the stator windings with a megohmmeter if the motor has been in storage for a long period or exposed to adverse conditions.

Determine if it is necessary to change out bearings based on storage length and conditions.

Is the resistance lower than 1 megohm?

If resistance is lower than 1 megohm, choose a drying method for the windings.

For Method 1: Bake in oven at temperature below 194°F until the insulation resistance becomes constant for a minimum of 30 minutes. Constantly monitor the conditions.

For Method 2: With the rotor locked, apply low voltage (approximately 10% nameplate voltage) and gradually increase current through windings until temperature measured with thermometer reaches 87°C (188°F). Do not exceed this temperature. Maintain this temperature until the insulation resistance remains constant for 30 minutes.

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