Ascension 5442P Istruzioni operative
MAINTENANCE & REPAIR
MANUAL
ASCENSION PROTEGE
PORTABLE WHEELCHAIR LIFT
MODEL 5442P
Patented – see www.ascension-lift.com/patents
By Philip Brobeck at 11:20 am, Dec 21, 2018
ASCENSION PROTEGE
PORTABLE WHEELCHAIR LIFT
MODEL 5442P
MAINTENANCE & REPAIR
MANUAL
Copyright © 2018 Ascension, a Division of AGM, Tucson, Arizona
This document, or parts thereof, may not be reproduced in any form, by any method, for
any purpose, without written the permission of Ascension.
TABLE OF CONTENTS
INTRODUCTION ............................................................................................................. 1
About This Manual ..................................................................................................... 1
Additional Information ................................................................................................ 2
Getting Help ............................................................................................................... 2
Contacting Ascension ................................................................................................ 2
SECTION 1 Terminology ............................................................................................... 3
SECTION 2 Routine Maintenance ................................................................................. 5
2.1 Hydraulic System ............................................................................................ 5
2.2 Cleaning .......................................................................................................... 5
SECTION 3 Mechanical Disassembly and Repair ......................................................... 6
3.1 Important Preliminary Information ................................................................... 6
3.2 Electrically Isolating the Lift ............................................................................. 6
3.3 Removing the Sheet Metal Skins .................................................................... 7
3.4 Operating Stations .......................................................................................... 8
3.5 On/Off Switch .................................................................................................. 9
3.6 Upper Stop Sensor .......................................................................................... 9
3.7 Lower Terminal Switch .................................................................................. 11
3.8 Upper Platform Gate Switch .......................................................................... 12
3.9 Front Gate Interlock Switch ........................................................................... 13
3.10 Tilt Sensor ..................................................................................................... 15
3.11 Hydraulic Valves ........................................................................................... 16
3.12 Windows........................................................................................................ 18
3.13 Platform Floor Removal ................................................................................ 19
3.14 Lower Gate Closer Adjustment ..................................................................... 21
3.15 Upper Gate Closer Adjustment ..................................................................... 23
3.16 Safety Pan Switches ..................................................................................... 25
3.17 Safety Pan Removal ..................................................................................... 27
SECTION 4 Electrical Testing ..................................................................................... 29
4.1 Access to the Electrical Panel ....................................................................... 32
4.2 Testing the Switches ..................................................................................... 33
4.3 Testing the Smart Relay ................................................................................ 34
4.4 Testing the Power Supply ............................................................................. 35
4.5 Testing the Power Relay ............................................................................... 35
SECTION 5 Lift Compression/Expansion .................................................................... 37
5.1 Compressing the Lift ..................................................................................... 38
5.2 Expanding the Lift ......................................................................................... 42
5.3 Verification of Operation ................................................................................ 45
SECTION 6 Troubleshooting ....................................................................................... 46
Maintenance & Repair Manual Introduction
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INTRODUCTION
The purpose of this manual is to provide the necessary information to perform
maintenance and repairs on the Ascension PROTEGE portable wheelchair lift. This
manual is intended to be used by skilled technicians who have experience working on
electro-mechanical systems and devices. Furthermore, these personnel should be well-
versed in standard industrial safety practices and procedures. The appropriate sections
should be read through completely before any repairs are begun.
About This Manual
This manual is divided into six sections:
Section 1 defines terms that are used throughout the remainder of this manual.
Section 2 describes the recommended procedures for performing routine maintenance.
Section 3 covers mechanical repair. This includes component replacement, as well as
detailed procedures to disassemble, test, and reassemble major components.
Section 4 covers electrical testing.
Section 5 describes how to compress the lift so that it can be rolled through a narrow
doorway and then expanded again for normal use.
Section 6 is a troubleshooting guide. It provides information for locating and correcting
any problems with the lift.
Maintenance & Repair Manual Introduction
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Additional Information
The following sources of information supplement this manual:
Operating Manual An Operating Manual is supplied with each lift and includes all the
necessary information to set up, break down, store, and transport the lift. It also
includes the general safety precautions that should be observed.
Setup and Operation Video A short video on setup and operation can be found at the
following web address: https://ascension-lift.com/lift-setup/.
Getting Help
If you have a question or problem with the lift, please try to find the solution in this
manual. In particular, be sure to review the troubleshooting guide in Section 6. If you
are not able to resolve the problem, please contact Ascension as indicated below,
making sure that you have the serial number of your lift ready. The serial number can
be found on the data plate located inside the platform on the upper right rail. Also, it is
recommended that you contact Ascension while in the immediate vicinity of your lift, as
this will reduce the time required to properly diagnose the problem.
Contacting Ascension
Ascension's business hours are 8 a.m. to 5 p.m. Mountain Standard Time, Monday
through Friday.
Telephone: 800-459-0400 Mailing Address: Ascension
Fax: 520-881-4983 Customer Service
Website: www.ascension-lift.com Tucson, AZ 85717-0020
Maintenance & Repair Manual SECTION 2
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SECTION 1 Terminology
To effectively use this manual, you need to be familiar with the following terms. Refer to
the figure on the following page for identification of components. Not all components
are shown in the figure.
Access Panel The hinged panels (four total) that provide access to the machinery
cabinets.
Back End The end of the lift where the upper landing gate is located.
Base The steel frame that rests on the floor when the casters are removed and
supports the operating mechanism.
Control Panel The electrical panel for the lift which contains the power supply, control
system relay, and the main power relay. The control panel is located inside the right-
hand machinery cabinet.
Dock Plate The hinged plate that bridges the gap between the platform floor and the
upper landing surface when the platform is at the upper landing.
Front End The end of the lift where the lower landing gate is located.
Lower Landing Gate The gate that serves the lower landing (ground level).
Machinery Cabinet The enclosures in which the lifting and control mechanisms are
located. There is one cabinet on each side of the lift. The contents of the machinery
cabinets are accessible through the access panels.
Operating Stations The controls for raising and lowering the platform. All three
operating stations are located on the right side of the platform. The operating station
inside the platform has an emergency stop switch.
Platform The compartment in which the passenger rides.
Skins The sheet metal panels that enclose the operating machinery.
Upper Landing The stage, platform, or riser that the lift serves.
Upper Landing Gate The gate that serves the upper landing, or stage.
Maintenance & Repair Manual SECTION 2
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