Instruction Book
Page 42
Effective: February 2007
For more information visit: www.EatonElectrical.com
I.B. 8295A61H07
7-3 INSPECTION AND MAINTENANCE PROCEDURES
No./Section
Inspection Item
Criteria
Inspection Method
Corrective Action
1. Insulation
Insulation
Integrity
Drive Insulator
and
Molded Pole Unit Support
Main Circuit to Ground
Between Main Circuit
Terminals.
Controls Circuit to Ground
No dirt
No cracking
Withstand
Withstand
Withstand
Visual Check
Visual Check
Hipot Tester
Hipot Tester
Hipot Tester
Clean with lint-free cloth.
Replace cracked unit
Clean and retest or replace
Clean and retest or replace
Clean and retest or replace
2. Power
Elements
Vacuum Interrupters
Visibility of
Contact Erosion
Mark
Contact wipe visible
Adequate Vacuum
Dirt on ceramic body
Visual-Close the breaker
and look for green mark on
moving stem from the rear
of the breaker
(see Figure
7-2
and
7-3
).
Visual
(Figures
7-4
and
7-5
)
See
Section
7-4
Visual Check
If mark is not visible, replace
pole unit assembly.
Replace pole unit assembly
Replace pole unit assembly
Clean with dry lint-free cloth.
3. Control
Circuit
Parts
Closing and Tripping Device
Including Disconnects
Wiring
Terminals
Motor
Tightness of Hardware
Smooth and correct
operation by control
power
Securely tied in
proper place
Tight
Smooth, Normal
Operation
No loose or
missing parts
Test closing and tripping of
the breaker twice
Visual Check
Visual Check
Functional Test
Visual and tighten with
appropriate tools
Replace any defective
device, Identify per troubleshooting
chart
Repair or tie as necessary
Tighten or replace if necessary
Replace brushes or motor
Tighten or reinstate if
necessary
4. Operating
Mechanism
Dust or Foreign Matter
Lubrication
Deformation or Excessive
Wear
Manual Operation
No dust or foreign
matter
Smooth operation
and no excessive
wear
No excessive
deformation or wear
Smooth operation
Visual Check
Sight and feel
Visual and operational
Manual charging, closing
and tripping
Clean as necessary
Lubricate very sparingly with
light machine oil
Remove cause and replace
parts
Correct per trouble-shooting
chart if necessary
Summary of Contents for Cutler-Hammer VCP-WR Series
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