Printronix PrintCart - Manual (Page 41)

41
To Replace Batteries
1. Lift the protective covers on the battery (-) terminals and remove the bolts
and washers holding the cables in place. See Figure 21 on page 42.
2. Perform the same operation on the battery (+) terminals. Be sure to save
all nuts, bolts and washers removed.
3. Loosen and remove the battery clamp knob.
4. Lift the clamp plate, cables, fuse and disconnects from the battery pallet
as a single unit.
5. Ensure the pallet is fully supported all around, then remove both batteries
from the subpallet one at a time and set them aside for disposal.
6. Obtain a new set of batteries to be installed and place them into the same
position on the subpallet as the old batteries. Be sure and observe that
the polarity of the battery terminals is correct.
WARNING Exercise care in lifting. Use a second person if necessary to avoid back
strain.
If the batteries are a different length, adjust the bottom brackets to the
appropriate width to keep both batteries centered. If the batteries are a
different height, loosen the lock nut at the base of the thread rod and raise
or lower the thread rod to make the top approximately 1/2” to 3/4” higher
than the top of the battery.
7. Replace the clamp plate and secure the center knob so it is tightly snug.
8. Re-install the battery terminal wiring (red to (+) positive terminal and black
to (–) negative terminal) and secure the terminal hardware.
WARNING Reversing battery polarity on the interconnect cables could result in
damage to the cables and batteries and can also cause an explosion.
Make sure that the terminal covers are also in place and adequately
cover the terminal hardware.
9. Re-install the BSP into the PrintCart frame.
10. Install the restraining bolts on both sides of the PrintCart to secure the
pallet in place if daily battery exchange is not practiced for PrintCart
operation. Before installing the screws, use the tip of the screwdriver to
insure the hole in the BSP is aligned with the hole.
11. Re-connect the LED display power cord and the main battery disconnect.
12. Close and latch the front door.
This completes the battery replacement procedure. Be sure to fully charge the
new batteries before using them.