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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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Siemens Low Voltage Power Circuit Breaker WLF2S320

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Maintenance Plans for Siemens Low Voltage Power Circuit Breaker Model WLF2S320

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Circuit Breaker Removal

Warning: This procedure requires trained personnel with PPE!

Circuit breaker cranked into the disconnected position

Racking handle unlocked / withdrawn

NOTICE: Racking Handle Damage. Turning the racking handle beyond the stop will cause damage to the racking mechanism.

Racking handle pushed in

Racking handle rotated counter-clockwise until it can be stowed

Circuit breaker pulled into withdrawn position and removed

Sign off on the circuit breaker removal

Run this procedure

Circuit Breaker Internal Contact Assembly Replacement

DANGER: Hazardous voltage. Will cause death, serious personal injury, or equipment damage. Turn off and lock out all power supplying this device before working on this device.

WARNING: High speed moving parts. Can cause serious personal injury. Discharge the closing spring before inspection and before carrying out any work on the circuit breaker.

NOTE: Pole assemblies are not field-replaceable for frame size III, M-class circuit breakers.

All three poles replaced at the same time?

Arc chutes replaced?

Circuit breaker opened and closing spring discharged?

Circuit breaker removed from the cradle?

Sign off on the circuit breaker internal contact assembly replacement

Run this procedure

1 Yearly Circuit Breaker Maintenance

DANGER:

Hazardous voltage.

Will cause death, serious personal injury, or equipment/property damage.

Turn off and lock out all power supplying this device before working on this device.

Only qualified personnel should work on this equipment, after becoming thoroughly familiar with all warnings, safety notices, and maintenance procedures contained herein and on the devices.

The successful and safe operation of this equipment is dependent on proper handling, installation, operation and maintenance.

WARNING:

High speed moving parts.

Can cause serious personal injury.

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Arc Chute Removal

Warning: Mishandling may lead to broken insulation plates of the arc chute housing, and compromised insulation capacity.

Loosen screw by approx. 15 mm; do not remove it; FS III and FS II, class C: remove screw completely

Push the cover back; FS III: lift the cover carefully

Remove the cover

Take out the arc chute

Do not stand arc chutes up, when placing them on a table, or any other surface outside of the circuit breaker. The arc chutes should be placed on their side to prevent breakage of the insulation plates.

Sign off on the arc chute removal

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Mechanical Function Test

Charge the closing spring manually

Open

Check again the wear indicator

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