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Chapter Four – Maintenance Procedures – Base
90
4.6 LIFT UNIT (CONTINUED)
LIFT POTENTIOMETER REPLACEMENT AND ADJUSTMENT (CONTINUED)
8. Lift up and out on the pot housing assembly to remove it from the lift housing.
NOTE
The replacement pot will come attached to the pot housing along with the plastic gear.
9. Properly ground yourself (see page 10 for static discharge precautions).
10. Be sure the bed power cord is unplugged from the wall socket. Remove the jumper stored at P6 on the
litter CPU board (see page 199 for location of CPU board). Install the jumper at P2 (on the litter CPU) in
the last set of pins toward the head end of the bed.
11. Plug in the power cord and carefully move the jumper from P2 back to P6. Run the bed fully up electrically.
12. Before installing the new pot on the bed, turn it clockwise until it stops. Turn it back counterclockwise two
full (360
) revolutions. This allows a ”window” position for proper upper and lower limits.
13. Reverse steps 4–8 to install the new pot and pot housing assembly. Be sure to plug the new pot in and
do not unplug the bed power cord. Leave the litter access panels off.
NOTE
Be sure to maintain the pot position while installing.
14. Run the bed down electrically until it stops.
15. Press and hold the Bed Motion Lock key on the foot board until the Bed Motion Lock indicator begins to
flash. If the LED does not flash, press and hold the key again . The limits are now programmed.
16. Unplug the power cord to remove the bed from diagnostics.
17. Plug the power cord into a properly grounded wall receptacle and test the operation of the bed. The distance
between the floor and the top of the litter seat section (without a mattress) should be 15 1/2” – 16” with the
litter fully down, and 29 1/4” – 29 3/4” with the litter fully up.
NOTE
If the siderail bed up/down lockout light is flashing when the power cord is plugged in, one of the lift pots is
either out of adjustment or unplugged (or both). Check and reset limits.
18. Reinstall all access panels and covers.
Summary of Contents for Secure 3000
Page 78: ...Notes 78 ...
Page 106: ...Notes 106 ...
Page 184: ...Notes 167 2 ...
Page 241: ...Appendix B Circuit Board Locations Bed Wiring Diagrams 222 This page intentionally left blank ...
Page 243: ...Appendix B Circuit Board Locations Bed Wiring Diagrams 224 This page intentionally left blank ...
Page 249: ...DH 3 94 3000 000 020 REV B 420 Alcott Street Kalamazoo MI 49001 ...