Snorkel A38E Parts And Service Manual page 11

Introduction & Specifications
1.0 Introduction
PURPOSE
The purpose of this Service & Parts Manual is to
provide instructions and illustrations for the operation
and maintenance of the A38E Work Platform
manufactured by Snorkel (See Figure 1-1).
SCOPE
The manual includes the procedures and
responsibilities which must be strictly adhered to
for proper operation, maintenance, adjustment, and
repair of this product. The Maintenance Section
further covers preventative maintenance and trouble
shooting.
1.1 General Information
The A38E is a quickly deployable self propelled
aerial work platform, designed to raise two operators
with hand tools to a work height of up to 13.45 m
(44.12 ft.) i.e. a platform floor height of 11.45 m
(37.56 ft.). It is designed to provide mobility with the
Platform in the raised or lowered position, although
travel with the Platform raised is limited to a low
speed. The boom assembly and telescope functions
are operated by a hydraulic pump driven by a DC
electric motor. Two DC electric traction motors
coupled to two braked gearboxes regulate the drive
function.
PLATFORM
The platform is large enough for two operators and
has a free-draining perforated floor with 150 mm (5.9
inches) toeboards. Hand rails are constructed from
steel tubing and a safety drop-bar is provided at the
entrance. Safety harness anchor points are also
fitted in the floor of the platform. The primary Control
Box is fitted permanently within this platform.
A W A R N I N G A
DO NOT begin using the machine until the
platform entrance drop bar is in the fully lowered
position.
A38E Work Platform
CONTROL BOX
The control box is permanently fitted at the front
centre of the platform. It features a Joystick which
will provide proportional control for raising or
lowering either of the two booms, extending or
retracting the Telescopic Boom, rotating (slewing)
the entire Booms, Platform (if Platform Rotate fitted)
& Posts Assembly or driving. A safety feature which
is incorporated into the Joystick's operation is the
Interlock Switch. This must be activated at all times
while operation is required. This allows for one-
handed operation. A complete explanation of control
functions can be found in Section 3.
ELEVATING ASSEMBLY
The platform is raised and lowered by a combination
of two steel lift booms and one telescopic boom,
each of which is operated by a hydraulic cylinder
which in turn is actuated by hydraulic power from the
motor driven pump. Solenoid operated valves control
to which cylinder the hydraulic oil is directed. Each
cylinder features an integral holding valve to prevent
uncontrolled descent in the case of a hose burst.
ROTATION GEAR
The Booms & Posts Assembly can be rotated to
provide up to 5.6 m (18.4 ft.) of side outreach,
measured from the centreline of rotation to the front
of the Platform. This is done by means of an integral
hydraulic motor driving a Worm Drive Unit, around a
large diameter Slew Gear.
1
7
1. Platform
2. Elevating Assembly
3. Chassis
4. Power Module
5. Control Module
6. Platform Control Box
7. Lower Control Box
Figure 1-1: A38E Work Platform
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5
4
3
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Section
1.0
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