4.11 Trend-Like Position Sensing Switch
Chapter 4: Procedures
Affinity® Four Birthing Bed Service Manual (195826 REV 2) 4 - 21
4
4.11 Trend-Like Position Sensing Switch
Tools: 5/16” wrench
There are two contact-type microswitches installed in the Trend-Like position mechanism. Only one
switch requires adjustment. Proper adjustment of the Trend-Like position sensing switch (TS) keeps the
bed from going too low while in the Trend-Like position. The Trend-Like position handle switch (TH)
installed in the release arm mechanism is activated whenever the Trend-Like position handle is pulled
and does not require adjustment.
ADJUSTMENT
1. Set the brake/steer pedal to the brake position.
2. Make sure the bed is out of the Trend-Like position.
3. Put the bed in a mid-height position.
4. Raise the head section to its highest position.
5. Make sure the siderails are in the up position.
Failure to unplug the bed could cause injury or equipment damage.
6. Unplug the bed from its power source.
7. Put the siderail lockout switch at the head end of the bed in the locked position.
8. Remove the top motor cover (see Procedure 4.1 on page 4-3).
9. If the bed is equipped with the optional air system, the 5/16” Trend-Like position switch adjusting
screws are accessible. However, easier access may be obtained by removing the air package (see
Procedure 4.17 on page 4-29).
10. Loosen the two screws (A) that attach the switch bracket (B) to the Trend-Like position release
mechanism (E) (gas head and release lever) (see
Procedure 4-12 on page 4-22).
11. Use the Trend-Like position handle to put the bed in the Trend-Like position while observing the
actuator arm (D) of the TS switch (C).
12. When the bed is in the Trend-Like position, the TS switch (C) should be activated by the Trend-Like
position gas spring cylinder.
13. Make sure the actuator arm (D) is fully activated. (The arm is fully activated when the switch makes
an audible click.)
14. Tighten the two screws (A) that attach the switch bracket (B) to the Trend-Like position release
mechanism (E).
15. After the adjustment is complete, make sure the Trend-Like position system is operating correctly.
See “Function Checks” on page 2-4.
16. Reverse the removal procedures to reinstall the optional air system (if so equipped) and the top
motor cover.
17. Make sure all Trend-Like functions operate correctly. See “Function Checks” on page 2-4”.
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