4.7 Foot Limit Switch
Chapter 4: Removal, Replacement, and Adjustment Procedures
Page 4 - 22 Affinity® Three Birthing Bed and Affinity® Four Birthing Bed
Service Manual (MAN272 REV 4)
4.7 Foot Limit Switch
Tools required: Small screwdriver Tape measure
The foot limit switch adjustment should be performed whenever the bed’s foot
system is serviced, such as when the foot motor is replaced, when the hilow
switch is adjusted, and during preventive maintenance.
Checking the Foot Limit Switch
1. Set the brake/steer pedal to the brake position.
2. Ensure that the bed is out of the Trend-Like position.
3. Using the hilow function, raise the bed to the high position.
4. Using the head function, raise the head section to the high position.
5. Using the foot function, lower the foot section to the low position.
6. Depending on foot section used, do as follows:
• Non-Stow and Go bed—measure the gap (A) between the foot section
left-hand lift arm (B) and the hilow left-hand lift arm (C)
(see figure 4-10 on page 4-23). The distance should be ¼" (6.4 mm).
• Stow and Go bed—measure the gap (A) between the yoke pin and the
ramp guide (see figure 4-10 on page 4-23). It should be 1" (25 mm).
7. If the distance (A) is correct, go to step 8. If the distance (A) is not correct,
adjust the foot limit switch by following the procedures in the section,
“Adjustment” on page 4-22. For Stow and Go beds, replace the 1/4"
(6.4 mm) measurement with 1" (25 mm).
8. Do the “Function Checks” on page 2-4.
Adjustment
1. If the distance (A) is not exactly ¼" (6.4 mm), adjust the foot limit switch
by performing the following steps:
a. Using the foot function, raise or lower the foot section until the gap (A)
measures ¼" (6.4 mm) between the foot section left-hand lift arm (B)
and the hilow left-hand lift arm (C).
b. Remove the top motor cover (refer to procedure 4.1).
c. Turn the screw (E) on the foot limit switch (LFD) on the logic control
board, until the green light comes on (see figure 4-11 on page 4-24).
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