4.4 Hilow Limit Switch
Chapter 4: Removal, Replacement, and Adjustment Procedures
Affinity® Three Birthing Bed and Affinity® Four Birthing Bed Page 4 - 11
Service Manual (MAN272 REV 4)
4
4.4 Hilow Limit Switch
Tools required: Small screwdriver Tape measure
The hilow limit switch enables the correct maximum raised position of the bed.
Its adjustment should be checked whenever the bed’s hilow system is serviced,
such as when replacing the motor and during preventive maintenance. This
switch controls the bed’s travel limits and the Trend-Like function limits.
There are five limits controlled by this switch. Adjusting the bed travel to the
correct maximum height provides the correct adjustment of the other four lim-
its.
Checking the Hilow Limit Switch
1. Ensure that the bed is operational with the hilow system correctly installed
and connected.
2. Set the brake/steer pedal to the brake position.
3. Ensure that the bed is out of the Trend-Like position.
4. Using the hilow function, raise the bed to the high position.
5. Using the head function, raise the head section to the high position.
6. Using the tape measure, measure from the top center point of the main
frame (at the head end of the bed) to the floor. The distance (A) should be
31" ± ½" (787.4 ± 12.7 mm) (see figure 4-5 on page 4-12).
7. If the distance (A) is correct, go to step 10. If the distance (A) is not correct,
adjust the hilow limit switch by following the procedures in the section,
“Adjustment” on page 4-12.
8. If the bed has the Stow and Go® Foot Section installed, use the hilow
function to lower the bed to the low position. There should be 3" (76.2 mm)
clearance between the floor and the lowest point of the Stow and Go
underframe.
9. If there is less than 3" (76.2 mm) clearance, adjust the hilow limit switch by
following the procedures in the section, “Adjustment” on page 4-12
10. Do the “Function Checks” on page 2-4.
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