Ohio Magnetics, Inc.

A member of the HBD Industries, Inc. family of companies

Performance-engineered magnetic materials handling equipment and systems for lifting, separation & metal detection

Crane No./Location:

Date of Inspection:

Magnet Size:

Checker's Name:

Magnet Serial No.:

Magnet Resistance:

MAGNET

Leads:

  • Lead Shield Tight

  • Lead in Good Condition

  • Terminals in Good Condition; Clean & Tight

Chain & Chain Pins:

  • Inspect for Wear

  • Check Pin Retainers

Case:

  • Check for Cracks

  • Check for Min. 25mm or 1" Wear Depth

Center Pole:

  • Check Center Pole Bolts for Tightness

  • Check for Min. 25mm or 1" Shoe Wearing Surface

  • Check for Cracks

Coil:

  • Resistance 100% Cold to 170% Hot

  • Ground Resistance 200k Ohms Min. (hot)

CONTROLLER

Condition:

  • Contact Tips

  • Arc Shields

  • Coils

  • Pivot Pins

Resistors:

  • Open

  • Burned

Connections:

  • Tight

Dirt:

  • Remove from Panel

Cover:

  • Replace

Ground Resistance:

  • Input Terminals

  • Magnet Terminals

Voltage:

  • No Load

  • Full Load

GENERATOR

Brushes:

  • Wear

  • Tension

  • Arcing

Commutator:

  • Wear

  • High Bars

Bearings:

  • Check for noise

Access Covers:

  • Replace

Belts (PTO):

  • Wear

  • Tension

Rheostat:

  • Check for Wear or Damage

  • Adjust to Develop 220-240 V Full Load

CABLE

Wire Size:

  • Adequate

Condition:

  • Tape or Splice Worn or Frayed Portions

Free Reeling:

  • Free of Knots and Tangles

Cable Reels:

  • Lubricate Bearings

  • Grease Gears

  • Oil Springs

  • Proper Tension

  • Brush & Ring Wear

  • Brush Holder Insulation

  • Slip Ring Insulation

  • Replace Cover

 

NOTE: Care must be taken when taking measurements with portable instruments. To make resistance and ground readings, ensure that the power supply is turned off. To measure generator output voltage, connect meter leads to line terminals of the controller. Turn engine "on" and bring up to full speed. With the controller "off," read the voltmeter for "no-load" condition. then, turn the controller "on," energize the magnet, and read the voltmeter for "full-load" condition. Turn the controller and power supply off before disconnecting the meter leads.