TL33 Work Platform 1-1
Introduction & Specifications
1.0 Introduction
PURPOSE
This manual provides illustrations and instructions for the
operation and maintenance of the TL33 Work Platform
manufactured by Upright Ireland Ltd, Dun Laoire, Ireland.
(See Figure 1-1).
SCOPE
This manual includes both operation and maintenance
responsibilities concerning the TL33 Work Platform’s
readiness. The Maintenance Section covers scheduled
maintenance, trouble shooting, repair, adjustment and
replacement.
1.1 General Information
DESCRIPTION
The TL33 is a two-stage articulating boom lift platform,
designed to raise two operators with hand tools to a work
height of up to 12.3m. It is mounted on a trailer suitable
for towing on public roads at speeds of up to 50 mph /
83Km/h (subject to local regulations). The boom
assembly is operated by a hydraulic pump driven by a
DC electric motor.
Platform
The platform is large enough for two operators and has a
free-draining perforated floor with 150mm toeboards.
Hand rails are constructed from aluminium tubing and a
safety drop-bar is provided at the entrance. Safety
harness anchor points are fitted in the floor of the
platform.
Control Box
The control box is permanently fitted at the front of the
platform, and features a joystick to provide proportional
control of raising and lowering of each boom plus
rotation. A safety ‘Deadman’ switch is provided which
must be pressed at all times if operation is required. This
is integral with the joystick handle allowing one-handed
operation.
A complete explanation of control functions can be found
in chapter 3.
Elevating assembly
The platform is raised and lowered by two steel booms
each of which are operated by a hydraulic cylinder
actuated by hydraulic power from the motor driven
pump. Each cylinder features an integral holding valve to
prevent uncontrolled descent in the case of a hose burst.
Rotation Gear
The booms can be rotated to provide up to 5m side
outreach by means of a hydraulic motor driving a pinion
gear around a large diameter slew gear via a gearbox.
Power Pack
The power pack comprises four 6V batteries driving a
4HP electric motor which drives the hydraulic pump.
The batteries, charger and motor/pump set are located
under the fibreglass covers on either side of the chassis.
Control system
The machine is provided with fully proportional controls
by means of a motor control unit. This unit regulates the
drive motor/pump speed and hence the flow of oil
reaching the cylinders and slew motor via the solenoid
valves located on the manifold block.
The motor control unit is located above the electric motor
in the chassis module. The manifold block is located on
the first post.
Chassis
The chassis is designed for towing on public roads. It is
fitted with suspension and full sized road wheels. Also
fitted is a 50mm ball towhitch, jockey wheel and overrun
braking system with handbrake.
Four ‘Quick set’ fold down outriggers with screw jacks for
level adjustment are provided. Interlocks prevent
operation of the booms until all four outriggers are
deployed. The hydraulic tank is integral with the chassis
members, and a bubble level is fitted to aid levelling of
the chassis before use.
1. Platform
2. Elevating assembly
3. Chassis
4. Control Module
5. Power Module
6. Controller
4
6
2
3
Figure 1-1: TL33 Work Platform
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