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Troubleshooting
Jacq3G Loom User’s Manual
Page | 152
Troubleshooting
T
ROUBLESHOOTING
This document provides information regarding troubleshooting and
adjustment of the Jacq3G hook modules. The points covered in this
document address a very large percentage of potential issues and
adjustments that the user may encounter. However, not all potential
concerns are addressed by this guide. Please consult with your AVL technical
support representative if you cannot solve your issue from this guide.
CAUTION:
The Jacq3G hook module has both pinch and electrical shock hazards. The
pinch hazards include: bearing surfaces, between knives and module frame,
and between cables and stationary frame. The electrical shock hazards are
anywhere on the printed circuit board, at the solenoid connectors and at the
power entry connection. Working around these areas while the loom is
powered and mechanisms are moving requires special care. Keep hands and
tools away from these areas to avoid injury. Power down the loom or
disconnect power to the module to eliminate electrical shock hazard.
There are two primary causes for hook inaccuracy or weaving errors:
threading errors and equipment issues. You might be surprised how often
people have an issue with their warp – even with very experienced weavers.
From our experience, it is by far the most common cause of weaving errors.
We think this is partially due to the fact that Jacquard machines, whether it
is an AVL or some other brand, are much more ‘warp’ sensitive than harness
looms, requiring very high accuracy in warping, threading and sleying.
Jacquard looms do not tolerate twisted threads behind or in front of the
hooks, steep side-to-side angles coming off the beam or from the reed, or
even large variations in thread tension across the warp. This is the place to
begin your troubleshooting. Look for mis-threading, mis-sleying or thread
crossover by weaving tabby and observing the opening shed. You want to be
certain to solve any warp related issues before proceeding with equipment
testing and fixes.
E
QUIPMENT
T
ESTS
We have put together the following tests to diagnose equipment issues. You
will need to closely observe the equipment behavior to distinguish causes.
Because you may not be accustomed to observing machinery, you may need
to perform several iterations of the tests in order to really see what is
occurring.
Summary of Contents for Jacq3G
Page 2: ......
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Page 9: ...Jacq3G Loom User s Manual Introductory Information Page 1 INTRODUCTORY INFORMATION ...
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Page 27: ...Jacq3G Loom User s Manual Assembling the Loom Page 19 ASSEMBLING THE LOOM ...
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Page 45: ...Jacq3G Loom User s Manual Add the Warp Beams Page 37 ADD THE WARP BEAMS ...
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Page 71: ...Jacq3G Loom User s Manual Install the Beater Page 63 INSTALL THE BEATER ...
Page 105: ...Jacq3G Loom User s Manual Assemble the Bench Page 97 ASSEMBLE THE BENCH ...
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Page 109: ...Jacq3G Loom User s Manual Connect the Lift System Page 101 CONNECT THE LIFT SYSTEM ...
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Page 151: ...Jacq3G Loom User s Manual Lubrication Using the Jacqpoint Software Page 143 LUBRICATION ...
Page 159: ...Jacq3G Loom User s Manual Troubleshooting Places to use Grease Page 151 TROUBLESHOOTING ...
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Page 173: ...Jacq3G Loom User s Manual The Fine Print Equipment Fixes Page 165 THE FINE PRINT ...