I.B. 70A2580H02
Page 31
Effective November 2012
The recommendations and information contained
herein are based on Eaton experience and judgment,
but should not be considered to be all-inclusive or
covering every application or circumstance which may
arise. If further information is required, you should
consult Eaton.
Testing Procedures:
Assuming that the breaker is
safely pulled out to the Test/Disconnect position in the
enclosure or placed on the workbench, follow this
procedure to perform the CloSure
TM
Test. For further
instructions on disconnecting the circuit breaker consult
Section 4 of this manual. If the enclosure is equipped
with the MOC operating in the test position also, make
certain that the MOC is connected to operate.
Step 1 -
On the front cover identify the status indicators.
MAKE SURE THE CLOSING SPRING STATUS
INDICATES
“Discharged”
AND THE MAIN
CONTACT INDICATOR SHOWS
“Open”
(Figure 6-3).
Step 2 -
Remove the circuit breaker front cover.
Be sure
to save the original fasteners for reassembly.
Step 3 -
Cut a piece of one inch wide drafting/masking
tape approximately 8 to 10 inches long.
Step 4 -
Place the tape around the cam starting from the
bottom up. Make certain that the tape adheres well to
the cam surface. (See Figures 6-4, 6-5 and 6-6).
Step 5 -
Mount the transparent CloSure
TM
Test Tool
with two bolts and washers. Refer to Figures 6-17, 6-18
and Table
6.3
for appropriate mounting holes. Hand
tighten the bolts (Figures 6-7, 6-8, 6-17 and 6-18).
Step 6 -
A Sanford
®
Sharpie
®
black fine point permanent
marker, item no. 30001, is recommended for this next
step. Place the marker tip in the proper hole
(“C”
). Refer
to Figure 6-17
and make a heavy mark on the tape as
shown in Figure 6-10.
Figure 6-6 Attaching Tape Around to Back of Cam
Step 7 -
Charge the closing springs with the
maintenance tool. Continue charging the closing
springs until a “click” is heard and the status indicator
shows
“Charged”
(Figure 6-9).
Step 8 -
While holding the marker tip on the tape,
close the breaker (Figure 6-10).
Step 9 -
Move the marker back and forth horizontally
approximately 15
o
in both directions to create a line
on the tape that identifies the closed rest position
(Figures
6-11, 6-12
and
6-13.
Figure 6-7 Attaching CloSure
TM
Test Tool at Hole “A”
Figure 6-8 Attaching CloSure
TM
Test Tool at HPole “B”
Figure 6-9 Manually Charging Closing Springs