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I.B. 3A74499B
Page 33
Effective 11/97
SYMPTOM
INSPECTION AREA
CONTROL DEFECTS
Fails To Close
• Closing Springs charged but
• No Closing Sound
• Control Power
breaker does not close
(Close Coil does not pick up)
(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)
• Closing Sound
• Trip Bar-D Shaft
but no close
(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
Undesirably Closes
• Control Circuit
• Close Circuit
(CS/C Getting Shorted)
• Close Release Latch
(Fails to reset)
• Mechanism
• Close Floor Tripper
(Fails to reset)
Summary of Contents for 36W-VAC25
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