User Manual

2 The Retrofit 9
Replace Phase A Bus Bar
A slightly modified Phase A bus bar is included in the upgrade kit. This new bus bar allows
for greater clearance between the bus bar and the CEM3 backplane. You will need to
remove the old Phase A bus bar and install the new one in its place.
To remove the old bus bar:
Step 1: Disconnect the Phase A Cam Wire and
Phase A Detection Wire using a #2 Phillips
screwdriver or socket (may be 7/16” or 3/8”
depending on your pack model) as
required. Save the hardware for these
connections as you will need to reuse them.
Step 2: Using a socket (may be 7/16” or 3/8”
depending on your pack model), disconnect
the two hex bolts holding the bus bar to the
pack.
Step 3: Remove the old bus bar from the pack.
To install the new bus bar:
Step 4: Place the new phase bar in its intended location
and secure it with the bolts removed earlier. The
new phase bar has a distinctive notch in the
copper at the top corner bend of the bar. Tighten
the bolts to 6 ft.-lbs.
Step 5: Attach the Phase A Cam Wire to the phase bar.
Step 6: Attach the phase detection wire to the bus bar.
The phase detection wire must be installed in
the orientation shown at right to meet minimum
spacing requirements for the Phase B bus bar.
.
Note:
If your pack is set up for single-phase
operation, you will have to remove the
screw that holds the phase jumper bar to
the Phase A bus bar. Save the screw as
you will need it to reattach to the new bus
bar.
Note:
If your pack was set up for single-phase
operation, you will have to reconnect the phase
jumper bar to the phase A bus bar using the
previously removed screw.
Remove these fasteners
Notch in new phase bar
Phase detection wire
must be in this orientation