Rockwell Automation 140U Q and M-Frame Circuit Breakers Instruction Leaflet for Shunt Trip - Manual (Page 3)

Page 3
CAUTION
LEADS SHOULD BE FORMED AND ROUTED TO
CLEAR ALL MOVING PARTS WHEN ACCESSORY
IS
PROPERLY INSTALLED. PIGTAIL WIRES COULD BE
DAMAGED IF IN CONTACT WITH MOVING PARTS.
IF SHUNT TRIP IS REMOVED FROM CIRCUIT
BREAKER, INTERMEDIATE PLUNGER MUST ALSO
BE REMOVED. FAILURE TO REMOVE THE INTERME-
DIATE PLUNGER CAN RESULT IN EQUIPMENT DAM-
AGE.
Insert shunt trip as described in the following steps
(Fig 2-3)
A
WARN IN G
FAILURE TO KEEP FINGERS AWAY FROM MOVING
PARTS CAN CAUSE PERSONAL INJURY. WHEN
INTERMEDIATE PLUNGER
IS POSITIONED IN TRIP
UNIT, CIRCUIT BREAKER WILL MOVE TO THE
GERS CLEAR OF CIRCUIT BREAKER MECHANISM
PARTS AND HANDLE.
CARE SHOULD BE TAKEN TO KEEP FIN-
a. Remove barrier from trip unit accessory mount-
ing slots in pole being used for accessory.
b. Position intermediate plunger in trip unit
(Fig. 2-3).
c. Trip circuit breaker by pressing intermediate
plunger into recess in top of trip unit, and hold
plunger in
d. Slide shunt trip plug-in module into slots until
retaining clip snaps into trip unit. Cutoff switch
actuator must be above the crossbar. For termi-
nal block assemblies, slide terminal block into
mounting
slot on side of base as plug-in module
is being positioned.
e. If required, complete routing of leads to oppo-
site side through rear wiring trough.
WARNING
2-6. Perform mechanical check of shunt trip after instal-
lation:
a. With the circuit breaker still electrically isolated,
reset the circuit breaker.
b. Using a small flat-blade screwdriver, depress
solenoid plunger (Fig. 2-4). Circuit breaker
should move to trip position.
c. If mechanical check does not trip circuit
breaker, see if shunt trip and intermediate
plunger are correctly installed. If shunt trip and
intermediate plunger appear to be properly
installed and problem persists, contact
Allen-Bradley.
CAUTION
WHEN INSTALLING CIRCUIT BREAKER MAIN
COVER, MAKE SURE THAT ALL INTERNAL PARTS
ARE IN PLACE:
SLIDING HANDLE BARRIER IS POSITIONED SO
THAT THE HANDLE OPENING IS ALIGNED WITH
THE HANDLE.
With circuit breaker handle in TRIPPED position
and accessory pigtail leads (if used) routed as
required, install circuit breaker covers. Secure with
pan-head cover screws. Torque to 20-22 Ib-in
(2.26-2.49
ALL LEADS ARE CLEAR OF THE COVER.
CONTACT WITH MOVING PARTS CAN CAUSE PER-
SONAL INJURY. WHEN CHECKING ACCESSORY, DO
NOT PUT FINGERS NEAR MOVING PARTS INSIDE
NAL PARTS TO MOVE QUICKLY AND WITH FORCE.
CIRCUIT BREAKER CASE. SPRINGS CAUSE INTER-
40752-075(1) Effective 4/02