Tru-Test HD Series Load Bars Quick start guide

HD Series Load Bars Quickstart Guide

1

QUICKS

T

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HD

Ser

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H

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800, HD850,

HD10

1

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This guide takes you through the installation and use of your HD series load bars. The HD series load bars have been

specially designed for heavy duty use and permanent installation under cattle crates, crushes or squeeze chutes.

1

Unpacking the box

For most applications you will need two HD series load bars.

Note:

You may also need adaptor plates for your chute.

2

Weighing system

The Tru Test weighing system consists of a weigh scale indicator and two load bars. The load bars are fitted beneath a

platform or crate and transmit the weight signal to the indicator. The indicator displays and records the weight.

HD Series Load Bars Quickstart Guide

2

3

Getting around

Note:

The load bar foot plates have been locked in position for transportation and installation, and must be released

before weighing (see

Installing the load bars

).

4

Installing the load bars

Before you begin, ensure that the concrete pad is level.

1. Lift the crate so that the load bars can be positioned underneath. Align the holes of the crate and load bar mounting

plates and fix with 12 mm bolts at each load bar end.

Caution!

Dropping the crate with load bars fitted, or dropping the crate onto the load bars can damage the load bars.

2. Lower the crate/load bar assembly onto the concrete slab, ensuring that the load bar foot plates are not twisted or

binding in any way.

3. Fix each foot plate to the slab with a minimum of two 12 mm (½”) masonry anchors (e.g. Dynabolt™).

Install the masonry anchors one at a time, using the clamping action of each anchor to restrain the foot plate for

subsequent drilling. Take care to ensure that the anchors do not force the foot plates sideways and cause

misalignment of the ball and cup loading system.

HD Series Load Bars Quickstart Guide

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4. Once fixed to the slab, you must ‘unlock’ the bars from the foot plates. To do this:

a) Loosen the locknut that locks the load bar stop bolt to the foot plate. Unscrew the bolt, plastic sleeve and washer

from the foot plate and lift them out completely.

b) Remove the plastic sleeve fitted over each load bar stop bolt.

NEVER remove the rubber tube in the centre of the load bar. This contains the load centring cup assembly.

c) Reassemble the load bar stop bolt, washer, and locknut in the reverse order to the above disassembly.

d) Tighten the load bar stop bolt until there is a clearance of 1.0 to 2.0 mm (0.040 to 0.080”) between the underside

of the head of the load bar stop bolt and the washer. Tighten the locknut down to the foot plate to lock in place.

5. Unlock the other feet of the load bar system as described above.

Make sure that you have removed all eight plastic sleeves.

HD Series Load Bars Quickstart Guide

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5

Testing

Once installed, you should test with a weigh scale indicator.

1. Connect the load bar cables to a Tru-Test indicator.

2. Turn on and zero the indicator.

3. Put a test weight (which may be yourself or another person) at one end of the platform/crate and note the stable

reading on the indicator.

4. Put the test weight at the other end of the platform/crate and note the stable reading on the indicator.

5. Remove the test weight and note whether the reading returns to zero.

6. If the two readings differ by more than 1 kg OR the reading does not return to zero, see the

Troubleshooting

section.

Periodically repeat the above tests during use and also before first use if the equipment has not been used for some time.

6

Troubleshooting

Fault

Remedy

Reading does not return to

zero between animals

OR

Difference in readings at each

end of the platform

OR

Under reading (readings

lighter than expected).

•

Ensure that the platform/crate is not touching objects that may alter the weights.

Typical causes are binding against fixed metalwork or build up of dirt.

• Check that the load bar feet are sitting evenly on the ground.

• Check that bolt holes are not misaligned, as this may put a residual load on the load

bars.

Reading is unstable.

•

Moisture in the load bar connectors. Remove moisture from the plugs and caps using

methylated spirits, ethyl alcohol, or a suitable electrical contact cleaner. Do not use

stronger spirits, as they may react with the plastic.

• Damaged cable. Return the load cell for servicing.

• Moisture in load cells. Return the load cell for servicing.

Reading moves, display shows

under load or overload.

Damaged cable. Return for service.

7

Further information

Caring for the load bars

• Ensure that the underside of the platform or crate and gap between the load bar housing and foot is kept free of dirt

and stones.

• Do not leave the indicator, load bars or plugs immersed in water.

• Cables should be placed so that they will not be damaged. We recommend routing the cables through plastic pipe or

other conduit to help prevent damage.

• When not in use, always replace the dust caps on the load bar plugs. When the load bars are connected to the

indicator, screw the two dust caps together.

• Remove dust and moisture from the plugs and caps using methylated spirits, ethyl alcohol, or a suitable electrical

contact cleaner. Stronger spirits must not be used, as they may react with the plastic.

Service and warranty information

For service and warranty information, see www.tru-test.com.

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Wiegebalken der HD-Serie Schnellstartanleitung

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7

Weitere Informationen

Pfleglicher Umgang mit den Wiegebalken

• Sorgen Sie dafür, dass die Unterseite der Plattform bzw. des Wiegekäfigs frei von Schmutz und Steinen ist.

• Das Terminal, die Wiegebalken und die Anschlüsse dürfen nicht in Wasser oder andere Flüssigkeiten getaucht werden.

• Die Kabel müssen so verlegt werden, dass sie nicht beschädigt werden können. Wir empfehlen, für das Verlegen der

Kabel einen Kabelkanal aus Plastik oder ein Elektroinstallationsrohr zu verwenden, um sie vor Beschädigung zu

schützen.

• Bringen Sie stets die Staubschutzkappen an die Wiegebalkenanschlüsse an, wenn diese nicht in Verwendung sind.

Wenn die Wiegebalken an das Terminal angeschlossen sind, schrauben Sie die beiden Staubschutzkappen zusammen.

• Feuchtigkeit in den Anschlüssen oder Schutzkappen kann mithilfe von Methyl- bzw. Ethylalkohol oder einem

geeigneten Kontaktreiniger entfernt werden. Stärkere Mittel sind nicht geeignet, da diese mit dem Kunststoff

reagieren könnten.

Wartungs- und Gewährleistungsinformationen

Wartungs- und Gewährleistungsinformationen finden Sie unter www.tru-test.com.

All product names and brand names in this document are trademarks or registered trademarks of their respective holders.

No part of this publication may be photocopied, reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic,

mechanical, photocopying, recording or otherwise without the prior written permission of Tru-Test Limited. Product specifications may change without

prior notice.

For more information on other quality Tru-Test Group brands and products, visit www.tru-test.com.

Tru-Test Limited

25 Carbine Road

Mt Wellington

Auckland 1060

New Zealand

Postal address:

P O Box 51078

Pakuranga

Manukau 2140

New Zealand

810758 Issue 2, 3/2016

Tru-Test HD Series Load Bars Quick start guide

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