Switch Adjustments - Braun NL502 Series Service Manual

Public use wheelchair lifts
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Full In:
is stopped. Power is removed from the pump motor
and In Solenoid.
The lift is fully stowed when the rubber bumpers are
compressed 1/8 to 3/16 and the pump shuts off.
2. Loosen set screw and rotate front cam so that
screw is approximately at the 9:30 position.
3. Tighten set screw.
4. Stow lift.
set screw and rotate front cam clockwise.
screw and rotate front cam counterclockwise.
Full Out:
of the lift during Deploy function. Power is removed
from the pump motor and the Out Valve when this
switch is activated (pressed). The platform will not
raise or lower until this switch is activated (pressed).
ground.
2. Loosen set screw and rotate the rear cam so the
set screw is on top (12:00 position).
3. Rotate cam counterclockwise until switch is acti-
vated (pressed).
ing anytime the platform is deployed (unfolded) during
the Stow function. Up / Down travel of platform is only
allowed when the switch is activated (pressed).
needed.
Outer Barrier Occupied: Power is removed from the
pump and Up Valve when the switch is deactivated
(depressed) while the Outer Barrier is occupied a
the pump and an audible and visual alarm will also be
activated during the Up function.
needed.
Inner Roll Stop Occupied: The switch interrupts
downward travel of the platform during the Down
function by removing power from the Down Valve. An
audible and visual alarm will also be activated at that
time.
The switch is deactivated (depressed) two places
is occupied in the range of 1

Switch Adjustments

-
point when the Inner Roll Stop is locked in the upright
position. This deactivation stops the downward travel
and triggers an alarm.
is also deactivated (depressed). This does not stop
the platform or set off the alarm due to the deactivated
(depressed) Inner Roll Stop Deployed Switch.
(depressed) when the Inner Roll Stop mechanically
locks. The purpose of this switch is to override the In-
ner Roll Stop Occupied switch from stopping downward
travel whenever the inner roll stop is deployed and
locked.
Floor Level:
Power is removed from the pump motor and the Up
Valve by the switch when activated (pressed) once the
lifting cylinders have reached full extension.
The switch also allows threshold sensing when the
switch is deactivated (depressed) denoting that the
Inner Roll Stop Deployed is automatically adjusted
up pump. Stop raising platform once inboard end of
-
2. Loosen the (4) screws attaching the microswitch
bracket to the Rear Outer Vertical Channel.
3. Slide microswitch bracket down until microswitch is
activated (pressed).
4. Tighten the (4) screws attaching the microswitch
bracket.
Stow Level: The Stow Level Switch sets the height
at which the platform will be manually folded. It also
lift bay opening during the Stow function. The switch
is activated (pressed) at and below Stow Level. Power
is removed from the Down Valve when this switch is
activated (pressed).
1. A good starting reference is to raise the platform
so that the Outer Vertical Channel top edge is 1/2
lower than top edge of the Inner Vertical Channel
(red Stow Level arrow decals should be aligned).
2. Loosen the (2) screws attaching the microswitch to
the Rear Inner Vertical Channel.
3. Rotate the bottom of the microswitch bracket inward
bottom of the microswitch bracket outward.
4. Tighten the (2) screws attaching the microswitch
bracket.
This switch is deactivated
Page 5

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A2 series

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