Chassis Replacement - GE Giraffe OmniBed Carestation CS1 Service Manual

Chapter 7: Repair Procedures
Lower Device Repairs
8. Use a 2.5 mm hex wrench to remove four M4 flat washers, four M4 split lock washers, and four M4x10
button head socket cap screws, that attach the back cover shroud to the lower shroud.
9. Use a 4 mm hex wrench to remove two M6 flat washers, two M6 split lock washers, and two M6x12
button head screws, that attach the back cover shroud to the base plate.
10. Use a 4 mm hex wrench to remove two M6 flat washers, two M6 split lock washers, and two M6x12
button head screws, that attach the lower shroud to the base plate.
11. Using 3 mm hex key remove the screws that secure the upper shroud. Remove four screws. Remove the
upper shroud.
12. Pull the base wire harness out from the bracket casting.
13. Lock the back wheels and lay the device down on its back (control panel on the floor). Place blocks
under the uprights so the back wheels are off the floor.
14. Using a 4 mm hex key, remove the four socket head screws in the bottom of the elevating base that
secure the lower mounting plate to the base, and remove the mounting plate/leg assembly.
15. Using a 13 mm socket, remove the 4 nuts that secure the elevating base to the casting and remove the
base.
Note: Should the elevating base fail in the completely retracted position, the outer column will prevent
access to the 4 base mounting nuts. To remove the outer base, you must first remove the lower
mounting plate and slide the outer column out. This requires a T-30 Torx key (service tool number
6600-1204-400)
16. To replace the elevating base, reverse the assembly steps above. Check that the wheels are still locked
before lifting the device back into its upright position. If you are returning the old elevating base in its
original packaging, attach it to the relay board and run it down to its fully retracted position. Release the
shipping locks.
Note: With the device on its back, be sure the base power cable is pointing up before you attach the base.

7.9.5 Chassis Replacement

Refer to "Figure 7-48 Bed
"Figure 7-45 Chassis Bottom
1. Remove the bed sides, rotating bed, translation deck, tilt platform and pan.
2. Disconnect the compartment probe from the probe panel.
3. Remove the bottom chassis cover. (Refer to "Removing the Chassis Cover with the Storage Drawer in
Place" on page 7-45.) Remove the two side chassis covers (3 mm hex key).
4. Remove the front panel.
5. Disconnect the wiring harnesses.
6. Remove the two screws at the bottom corners that secure the probe panel to the enclosure. (Refer to
section 7.13.1.)
Warning: Be sure the front of the chassis is supported before removing the screws from the
!
bracket to prevent the chassis from falling.
7. While supporting the chassis, remove the 5 bolts on either side of the bracket casting that secure the
chassis to the bracket and remove the chassis.
8. Remove all the components from the old chassis (bed tilt; fan and motor; heatsink; humidifier; etc.) and
install them on the new chassis.
7-50
Disassembly", "Figure 7-47 Heat Sink and
Cover".
Fan", "Figure 7-46 Fan Motor",
Service Manual