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RAMP TERMINOLOGY
Introduction
Braun RA400 Series Transit
Ramps (to be referred to as
RA400 throughout this manual)
are designed for use in low-floor
transit vehicles. The RA400
provides vehicle access to people
with disabilities (wheelchair pas-
sengers or standees using other
type mobility aids). The commer-
cial oriented ramp is ADA compli-
ant (dependant upon installation
height). See the Installation sec-
tion for ADA specifications.
The self-contained "drop-in" unit
requires no remote pump, exter-
nal hydraulic lines or pre assem-
bly. The hydraulic and electrical
components are internal and eas-
ily accessible. A single electrical
feed provides the power supply
(24 volt), the ground, a ramp OUT
signal (+), a ramp IN signal (+)
and various indicator signals.
A "floor pocket" built into the chas-
sis/floor system allows for simple
installation (dimensional require-
ments specified in the Installation
section).
The RA400 is specifically de-
signed to be operated by an
attendant. The ramp installer
provides an appropriate control
switch for the end user. Conse-
quently, the operating instruc-
tions contained in this manual
are generic due to the limitless
variables.
Page 4
The RA400 provides fully auto-
matic operation of ramp functions.
The electric/hydraulic system is
controlled by two relays which ac-
tivate the hydraulic pump in oppo-
site directions for deploy and stow
functions (powering dual-acting
hydraulic cylinders ). No sensitive
electronic controls or sensors are
required for operation.
All RA400 ramp models feature
gravity down "drift" during the
deploy cycle. When deploying
the ramp, the motor stops running
when the ramp reaches an ap-
proximate 45° angle. The ramp
continues to slowly lower the
remaining distance by the force of
gravity. When stowing, the ramp
folds inward until it's beyond the
45° shut off point, then gravity
lowers the ramp to the pan.
The pressure relief valves built
into the pump prohibit the ramp
from lifting (raising) with approxi-
mately 20 pounds or more on the
ramp.
Instructions are provided for
manual operation of the ramp
in event of power or equipment
failure. See Manual Override
on the following page for further
details.
Read and become familiar with
all operation safety precautions,
operation notes and details,
operating instructions and manual
operating instructions before at-
tempting operation.
Terminology: Become familiar
with the terminology that will be
used throughout this manual.
Become familiar with the iden-
tification of RA400 components
and their functions. Contact your
sales representative or call The
Braun Corporation at 1-800-THE
®
LIFT
if any of this information is
not fully understood.
Direction: The terms "left",
"right", "in" and "out" will be used
throughout this manual to indicate
direction (as viewed from the out-
side of the vehicle looking directly
at the ramp). Refer to the Termi-
nology Illustrations for clarification
of direction terms.
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