IB00405002E
For more information visit: www.eaton.com
Instructional Booklet
Effective: August 2007
Page
31
O & M Manual for the CHGENLC Automatic
Transfer Switch with ATC-100 Control
Figure 47. Location of the Top Generator Breaker Mounting
Screw.
Step 5:
Remove the screw securing the top of the generator
breaker to the mounting bracket using a blade screw-
driver or 0.25 in. nut driver. Remove the generator
breaker from the ATS (see Figure - 47)
Step 6:
Align the new generator breaker with the holes in the
mounting bracket. Loosely secure the top of the genera-
tor breaker to the mounting bracket using the hardware
provided.
Step 7:
Firmly tighten the screw securing the top of the generator
breaker to the mounting bracket.
Step 8:
Reconnect the jumpers between the generator breaker
and the lugs at terminals E1 & E2 on the generator
(Source 2) side of the contactor using the screws and
hardware provided.
Step 9:
Reconnect the cables to the lugs on the line side of the
generator breaker using the lug screws and 6mm allen
wrench provided.
Step 10:
Apply utility (Source 1) power and place the generator
selector switch in the “AUTO” position after the genera-
tor breaker has been replaced. Test the system for proper
functionality.
7.4.1.11 Service Entrance Breaker Lugs (100 and 200A)
Figure 48. Location of the Service Entrance Breaker Lugs.
Step 1:
Turn the utility (Source 1) power off and turn the genera-
tor (Source 2) control selector switch to the “OFF” posi-
tion before attempting to replace the service entrance r
breaker’s line side lugs.
Step 2:
Remove the service entrance breaker from the ATS by
following steps 1 through 4 in Section 7.4.1.9.
Step 3:
Working from the rear of the service entrance breaker,
remove the two (2) screws securing the lugs to the stabs
using a Phillips screwdriver (See fig. 49)
Figure 49. Location of the Screws Securing the Lugs to the Stabs.
Step 4:
Remove the lugs from the stabs.
Step 5:
Slide the new lugs over the stabs until the holes in each
are aligned.
Step 6:
Secure the new lugs to the stabs using the hardware.
Step 7:
Reinstall the service entrance breaker in the ATS by fol-
lowing Steps 5 through 10 in Section 7.4.1.9.
SCREW
BREAKER LUGS
SCREW
SCREW
