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Avery Weigh-Tronix Swivel Caster Cargo Scale User manual

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Federal Express
Swivel Caster Scale System
Model SCS 131107-20
Operation and Maintenance Manual
AWT35-100166 Issue AA September 2023
© Avery Weigh-Tronix group of companies 2008. All rights reserved.
No part of this publication may be reproduced, stored in an electronic retrieval system, or transmitted in any form
or by any means, electronic, mechanical, photocopying, recording or otherwise without the prior written consent of
the copyright owner, or as permitted by law or under license. Full acknowledgment of the source must be given.
Avery Weigh-Tronix is a registered trade mark of the Avery Weigh-Tronix group of companies. This publication was
correct at the time of going to print however, Avery Weigh-Tronix reserves the right to alter without notice the
specification, design, price or conditions of supply of any product or service at any time.
All third party brands and product names used within this document are trademarks or registered trademarks of
their respective holders.
Fedex_SCS_ 13199_131107_u_en_500354.book
SCS Operation and Maintenance Manual 1
1 Introduction and Description of Your Systems
1.1 Introduction
Avery Weigh-Tronix is proud to present you with your Swivel Caster Scale System. This
system was specially designed to fit your air-cargo weighing needs, both now and in
the future.
This manual provides verified procedures that will enable a person who is unfamiliar
with the SCS system to operate, maintain and repair it properly.
1.2 System Specifications
1.2.1 Mechanical Specifications
Total Capacity 20,000 lbs
System Accuracy 0.1% or less of applied load
1.2.2 Weigh Bar Specifications
The Weigh Bar is Avery Weigh-Tronix® patented alternate to a traditional loadcell. For
more information check out the Weigh Bar Drawing on page 7.
The Avery Weigh-Tronix® Federal Express Swivel Caster Deck Scale System provides
the means to weigh airfreight containers while they are being loaded.
Maximum Load 5,000 lbs
Maximum Excitation 20 V AC or DC
Input Resistance 350 ohms ±1%
Output Resistance 350 ohms ±1%<blue>page 7
Zero Balance ±1% of rated capacity
Output at rated capacity 2.03 mv/v
Non-linearity (maximum) 0.02% of rated output
Repeatability 0.02% of rated output
Creep (maximum) 0.01% of rated output
Safe Overload 150% of rated output
Maximum Overload 200% of rated output
Insulation resistance 1010 ohms
Avery Weigh-Tronix reserves the right to change specifications and features without
notice and without incurring obligation.
2 SCS Operation and Maintenance Manual
1.3 Description of Swivel Caster Deck Scale System
1.3.1 Major Components
The system has two major parts:
1. Swivel caster deck scale assembly
2. Remotely mounted indicator (see indicator for operation instructions)
Figure 1.1 shows the scale deck.
Figure 1.1 Swivel caster deck scale
See the simplified block diagram in Figure 1.2.
Figure 1.2 Swivel caster deck scale system simplified block diagram
The swivel caster deck assembly consists four Avery Weigh-Tronix 5000 lb capacity
Weigh Bars, a junction box, a subframe and mounting components. See the
illustrations in the back of this manual for details of the scales construction.
SCS Operation and Maintenance Manual 3
2 Installation and Wiring Information
2.1 Scale Deck Installation
The surface of the scale deck should be parallel to the floor slab in the direction of daily
travel. The deck must be level front to back, in the direction of container travel and the
scale must be anchored in place with expansion bolts.
Following are the steps for installing the scale platform. See Figure 2.1.
1. Determine the scale location and position mounting base plates per outline
drawing for your system.
2. Drill holes in concrete floor and fasten base plates with 5/8" x 3" long
expansion bolts and flat washers.
3. Set a support channel on center of each base plate.
4. Place the scale platform in position with the sub-frame inside the support
channels.
5. Insert two .75" diameter bolts with washer through support channel and sub-
frame. Thread nut on bolt but DO NOT TIGHTEN.
6. Adjust scale platform to desired height using the .62" diameter bolts in each
corner and tighten the support channels to the sub-frame.
7. Center support channel on base plates and weld the base plates and support
channels together. (Repair paint finish upon completion of welding.)
8. Install interface cable between the scale platform and indicator enclosure.
Figure 2.1 Mounting illustration
2.2 Indicator
Make the necessary connections between the indicator and the scale junction box as
shown in Wiring Digram on page 8. Plug the AC power cable into the appropriate power
source, 110 V ac, 60 Hz.
Do all welding prior to installation of the interface cable.
Do not weld on or near a Weigh Bar. Excessive heat or high currents may cause
internal damage. Place welding ground on the support channel and not on the
sub-frame.
4 SCS Operation and Maintenance Manual
3 Operating Instructions
See the user and service manuals for the indicator used with this scale for instructions
on daily operation and calibration procedures.
SCS Operation and Maintenance Manual 5
4 Maintenance and Calibration
4.1 Caster Maintenance
1. Check casters for free movement.
2. Casters do not require lubrication.
3. Replace any faulty casters.
4.2 Weigh Bar Maintenance
1. Check for cracks or abrasions on cables.
2. Check to see that cables are not pinched or restricting scale movement.
3. Check adjustment of overload stops.
4. Remove any debris from around weigh bar suspension points. Be sure that
suspension points have no restrictions to free movement.
6 SCS Operation and Maintenance Manual
SCS Operation and Maintenance Manual 7
5 Technical Illustrations
5.1 Weigh Bar Drawing
8 SCS Operation and Maintenance Manual
5.2 Wiring Digram
SCS Operation and Maintenance Manual 9
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Avery Weigh-Tronix USA
1000 Armstrong Dr.
Fairmont MN 56031 USA
Tel:507-238-4461
Fax:507-238-4195
Email: USAinfo@awtx-itw.com
www.averyweigh-tronix.com
Avery Weigh-Tronix UK
Foundry Lane,
Smethwick, West Midlands,
England B66 2LP
Tel:+44 (0)870 903 4343
Fax: +44 (0)121 224 8183
Email: webinfo@awtx-itw.com
www.averyweigh-tronix.com
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