Instructions

2.Periodically examine the contacts - cleaning is not required since the contact material is a special preoxidized silver cad- mium oxide alloy. Replacement is required only when the contact material is almost worn down to the backing. A complete pole consists of stationary and movable contacts and a contact spring. This feature insures proper contact mating which, in turn, provides maximum life.

3.Check magnet poles for foreign deposits and if present, carefully clean pole faces with solvent.

4.Check all screws for tightness.

5.Depress test-trip button on overload relay and then reset overload relay. This insures the relay’s ability to open the control circuit if necessary.

87-HFG

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May, 2002

Supersedes April, 2002

Siemens Energy & Automation, Inc. 1000 McKee Street Batavia, Illinois 60510

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Siemens Class 87 instruction manual Instructions