Eaton W-VAC Series Instructions For Installation, Operation And Maintenance page 49

the circuit breaker from closing fully. In such a case, it
is important to determine that the circuit breaker will
close fully. The CloSure
General Information: The CloSure
formed on the VCP-W, VCP-WR, VCPW-ND, DHP-VR, W-
VACR, W-VAC, and W-VACW lines of vacuum circuit
breakers Refer to Table 6.3 for a list of circuit breakers. If
TM
the CloSure travel obtained is as specified, the mecha-
nism performance is satisfactory. If the CloSure
does not conform as shown in Figure 6-15, contact
Eaton for further information. (See Step 13).
DO NOT ATTEMPT TO INSTALL OR PERFORM
MAINTENANCE OR TESTS ON THE EQUIPMENT
WHILE IT IS ENERGIZED. NEVER PUT YOUR
HANDS NEAR THE MECHANISM WHEN THE CIR-
CUIT BREAKER IS IN THE CHARGED OR CLOSED
POSITION. DEATH OR SEVERE PERSONAL INJURY
CAN RESULT FROM CONTACT WITH ENERGIZED
EQUIPMENT. ALWAYS VERIFY THAT NO VOLTAGE
IS PRESENT BEFORE PROCEEDING WITH THE
TASK, AND ALWAYS FOLLOW GENERALLY
ACCEPTED SAFETY PROCEDURES.
Safety Precautions: Read and understand these
instructions before attempting any maintenance, repair
or testing on the breaker. The user is cautioned to
observe all recommendations, warnings and cautions
relating to the safety of personnel and equipment.
The recommendations and information contained herein
are based on Eaton experience and judgment, but
should not be considered to be all-inclusive or cov-
ering 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 proce-
dure to perform the CloSure
tions 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 INDI-
CATES "Discharged" AND THE MAIN CONTACT
INDICATOR SHOWS "Open" (Figure 6-9).
Step 2 - Remove the circuit breaker front cover. Be sure
IB131009EN
TM
Test provides this assurance.
TM
Test can be per-
TM
travel
WARNING
TM
Test. For further instruc-
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 6-9, 6-10 and 6-11).
Step 5 - Mount the transparent CloSure
two bolts and washers. Refer to Figures 6-22, 6-23 and
Table 6.3 for appropriate mounting holes. Hand tighten
the bolts (Figures 6-12, 6-13, 6-22 and 6-23).
®
Step 6 - A Sanford Sharpie
nent marker, item no. 30001, is recommended for this
next step. Place the marker tip in the proper hole ("C").
Refer to Figure 6-22 and make a heavy mark on the
tape as shown in Figure 6-15.
Step 7 - Charge the closing springs with the mainte-
nance tool. Continue charging the closing springs
until a "click" is heard and the status indicator shows
"Charged" (Figure 6-14).
Step 8 - While holding the marker tip on the tape, close
the breaker (Figure 6-15).
Step 9 - Move the marker back and forth horizontally
o
approximately 15 in both directions to create a line on
the tape that identifies the closed rest position (Figures
6-16, 6-22 and 6-18).
Step 10 - Remove the marker from hole "C".
Step 11 - Push the "push to open" clapper to open the
circuit breaker.
Step 12 - Inspect the circuit breaker to assure it is in the
open position and the closing springs are discharged.
Remove the transparent CloSure
tape from the cam and stick the tape on the front right
side sheet of the circuit breaker. Record the date of the
test and the operations counter reading on the tape
(Figures 6-19 and 6-20 and 6-21).
Step 13 - Evaluate the CloSure
paring the test tape with the illustrations in Figure 6-21.
If the marking is similar to 6-21A measure the over trav-
el "x": If "x" is greater than or equal to 0.6 inches, the
circuit breaker performance is satisfactory. If "x" is less
than 0.6 inches or if the marking is similar to 6-21B or
6-21C, immediately contact your Eaton Rep.
Step 14 - Remove the CloSure
front cover onto the circuit breaker. Return the circuit
breaker to it's original configuration and setup.
Instruction Book
Page 43
TM
Test Tool with
®
black fine point perma-
TM Tool. Remove the
TM" performance by com-
TM Tool. Reassemble the