4.5 Head Drive Motor Assembly
Chapter 4: Removal, Replacement, and Adjustment Procedures
Page 4 - 18 Affinity® Three Birthing Bed and Affinity® Four Birthing Bed
Service Manual (MAN272 REV 4)
10. Unplug the head drive motor assembly (C) power cable (D) from logic
control P.C. board connector P4.
11. Using the small wire cutters, cut the two cable ties (E) that secure the CPR
cable assembly (F) to the head drive motor shaft (G).
12. Using the needle nose pliers, remove the cotter pin (H), that secures the
CPR cable assembly (F) to the head drive motor release pin (I).
13. Note the orientation of the CPR cables to ensure that the CPR cables are
oriented correctly during the replacement procedure.
14. Remove the CPR cable assembly (F) from the head drive motor.
Prop up the head section before removing the cotter pins and clevis
pins. Failure to do so could result in personal injury or equipment
damage.
15. Lift the head section (J) frame upward, and prop it up (support it).
16. Using the needle nose pliers, remove the cotter pins (K) from the two clevis
pins (L) that secure the head drive motor assembly (C) to the bed frame.
17. Remove the head drive motor assembly (C) from the bed frame.
Replacement
1. To install the replacement head drive motor assembly (C), reverse the
removal procedure with attention to the following:
a. Ensure that the CPR cable routing is correct and free from binding.
b. Ensure that all cable ties, clamps, and connectors are properly installed.
2. Do the “Function Checks” on page 2-4.
Adjustment
To adjust the CPR function, refer to “CPR Release” on page 4-26.
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