Maintenance
Procedures
Chapter 4
33
D. Check the alignment of the holes. If the tube holes are not aligned any more with those
of the lever arms, repeat steps
B
and
C
until they are. Once the holes aligned, install
the washers and the clevis pin. Slightly raise the thigh section manually to ease the
insertion of the clevis pin.
E. Before installing the rue ring cotter to finalize the actuator replacement, raise and lower
completely the Knee Gatch. Check that the actuator stops working as soon as the thigh
section reaches the frame.
HI-LO ACTUATOR REPLACEMENT
N
N
O
O
T
T
E
E
In order to preserve the adjustment of the bed lowest position when replacing a Hi-lo actuator, a
special tool kit designed for that purpose must be used. The kit includes alignment jigs. To
obtain this kit, contact our Technical Service department (see section 1.2) and order part
number KR0113.
Required Tools:
Tool Kit KR0113
Side Cutters
5/16" Socket Wrench
Angle Indicator
Procedure:
N
N
O
O
T
T
E
E
Unless otherwise indicated, refer to figure 4.3B on page 30 for the illustration of this procedure
reference points.
1. Position the mattress support sections depending on the location of the Hi-Lo actuator to
replace:
At the foot of the bed
: Remove the molded shell of the foot section, fully raise the thigh
section, and lift and fold back the foot section toward the head end of the bed. Finally, using
an angle indicator, raise the Fowler by approximately 30°.
At the head of the bed
: Remove the molded shell of the head section and fully raise the
Fowler.
2. Position the alignment jigs on the floor right under the
Hi-Lo levers and lower the bed until the levers come
to rest on the jigs (see opposite illustration). Use a
socket wrench with the 1/2" socket provided in the kit
to lower a defective Hi-Lo actuator until the lever
rests on the jig.
3. Unplug the bed power cord from the wall outlet.
4. Disconnect the actuator cable and clip, using side
cutters, the cable ties holding it to the frame.
5. Remove from the capacitor the two wires (J)
connected to it and remove, using a Phillips
screwdriver, the screw (K) holding in place the capacitor. Dispose of the capacitor.
•
The capacitor of the head Hi-Lo actuator is located in the scale control board casing. To
access it, remove, using a Phillips screwdriver, the two screws (L) holding it the cover
plate.
•
The capacitor of the foot Hi-Lo actuator is located in the foot casing. To access it,
remove the six screws (A, Fig. 4.3C, page 35) holding the cover to the foot casing.
6. Using a 5/16" socket wrench, remove the two screws (M) holding the retaining plate to the
actuator support.
7. Remove the two pivot pins (J) holding the actuator to the support. To facilitate the removal
of the pins, insert a small slotted head screwdriver into the opening at the end of the
actuator and push out the pins.
