Page
xxxviii
IB131021EN
Effective Mar 2018
Knobs on UVR (if equipped) are incorrectly
adjusted
Check that both knobs on UVR are set to
their fully counter clockwise position
Circuit breaker undesirably closes
Closing coil is energized
Check control signal to circuit breaker for
proper connection
Interlock switch is closed
Check that interlocks are in correct
positions and free from obstructions
When attempting to close, the circuit
breaker opens immediately
The vacuum interrupter contact wipe is incorrectly
adjusted
Follow steps in Section 5.2.2 to correctly
adjust contact wipe
Contact EATON Service Center if unable
to follow steps in Section 5.2.2
Interlock switch is closed
Check that interlocks are in correct
positions and free from obstructions
Circuit breaker cannot be opened
remotely, but can be opened locally
Secondary contact wiring problem
Check for correct installation of pins and
sockets and that the plug is properly
connected
Controller wiring problem
Inspect for loose wires into terminals on
controller
Trip/Close relay wiring problem
Inspect for loose wires into/ out of
trip/close relay
Circuit breaker cannot be opened
locally, but can be opened remotely
Push button switch wiring problem
Inspect for loose wires at red "Push to
Open" push button
Controller wiring problem
Inspect for loose wires into terminals
controller
Circuit breaker makes no attempt to
open with either local (manual) or
remote controls
Wiring problem from auxiliary switch to controller
(Controller thinks breaker is already open)
LED on Controller labeled “circuit breaker
ON” should be on
Inspect for loose wires/continuity from
terminals 3 & 4 on Aux Switch to terminals
X1:3-X1:4 on controller & inspect for loose
wires from terminals 5 & 6 on Aux Switch
to terminals X1:9-X1:10 on controller
Wiring problem from Controller to Open Coil of EM-
Actuator
Inspect for loose wires/continuity from
terminals X3:1-X3:2 on Controller to Open
Coil wires on EM-Actuator (Primary open
coil wires are thin with black and white
insulation. Secondary open coil wires are
thin with blue and red insulation)
Defective or Damaged Controller/Auxiliary
Switch/Open Coil
Contact EATON Service Center
Vacuum Interrupter contacts welded
Contact EATON Service Center
Circuit breaker cannot be closed
remotely, but can be closed locally
Secondary contact wiring problem
Check for correct installation of pins and
sockets and that the plug is properly
connected
Controller wiring problem
Inspect for loose wires into terminals on
controller
Trip/Close relay wiring problem
Inspect for loose wires into/ out of
trip/close relay
