Inspection And Maintenance Procedures - Eaton Cutler-Hammer VCP-WR 18 Series Instructions For The Use, Operation And Maintenance

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7-3 INSPECTION AND MAINTENANCE PROCEDURES

No./Section Inspection Item
1. Insulation Drive Insulator
and
Molded Pole Unit Support
Insulation Main Circuit to Ground
Integrity
Between Main Circuit
Terminals.
Controls Circuit to Ground
2. Power Vacuum Interrupters
Elements
3. Control Closing and Tripping Device
Circuit Including Disconnects
Parts
Wiring
Terminals
Motor
Tightness of Hardware
4. Operating Dust or Foreign Matter
Mechanism
Lubrication
Deformation or Excessive
Wear
Manual Operation
Criteria Inspection Method
No dirt Visual Check
No cracking Visual Check
Withstand Hipot Tester
Withstand Hipot Tester
Withstand Hipot Tester
Visibility of Visual-Close the breaker
Contact Erosion and look for green mark on
Mark moving stem from the rear
of the breaker (see Figure
and 7-3).
Contact wipe visible Visual (Figures 7-4 and 7-5)
Adequate Vacuum See Section 7-4
Dirt on ceramic body Visual Check
Smooth and correct Test closing and tripping of
operation by control the breaker twice
power
Securely tied in Visual Check
proper place
Tight Visual Check
Smooth, Normal Functional Test
Operation
No loose or Visual and tighten with
missing parts appropriate tools
No dust or foreign Visual Check
matter
Smooth operation Sight and feel
and no excessive
wear
No excessive Visual and operational
deformation or wear
Smooth operation Manual charging, closing
and tripping
I.B. 8295A61H03
Corrective Action
Clean with lint-free cloth.
Replace cracked unit
Clean and retest or replace
Clean and retest or replace
Clean and retest or replace
If mark is not visible, replace
pole unit assembly.
7-2
Replace pole unit assembly
Replace pole unit assembly
Clean with dry lint-free cloth.
Replace any defective
device, Identify per trouble-
shooting chart
Repair or tie as necessary
Tighten or replace if necessary
Replace brushes or motor
Tighten or reinstate if
necessary
Clean as necessary
Lubricate very sparingly with
light machine oil
Remove cause and replace
parts
Correct per trouble-shooting
chart if necessary
Effective 7/97