Eaton W-VAC Series Instructions For Installation, Operation And Maintenance page 54

Instruction Book
Page 48
SYMPTOM
Fails To Close
• Closing Springs charged but
breaker does not close
Undesirably Closes
INSPECTION AREA
• No Closing Sound
(Close Coil does not pick up)
• Closing Sound
but no close
• Control Circuit
• Mechanism
CONTROL DEFECTS
• Control Power
(Fuse Blown or switch off)
• Secondary Disconnects
• Anti-Pump Relay
(Y relay N.C. contact open
or burned or relay picks up
• Close Coil
(Open or Burned)
• Latch Check Switch
(Contact open-bad switch
or trip bar not reset)
• Auxiliary Switch
(b contact open or burned)
• Motor Cut-off
(Contacts open or burned)
• Trip Coil Assembly
(Clapper fails to reset)
• Pole Shaft
(Not open fully)
• Trip Latch Reset Spring
(Damaged or Missing)
• Trip Bar-D Shaft
(Fails to remain reset)
• Trip Latch-Hatchet
(Fails to remain reset)
• Trip Floor Tripper
(Fails to remain reset)
• Close Latch
(Binding)
• Close Latch Roller
(Binding)
• Trip Circuit Energized
• Close Circuit
(CS/C Getting Shorted)
• Close Release Latch
(Fails to reset)
• Close Floor Tripper
IB131009EN