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AVL LOOMS
AVL Looms, Incorporated
2360 Park Ave, Chico, CA 95928
Ph: 530-893-4915, Fax: 530-893-1372
www.avllooms.com, support@avlusa.com
AVL Tech Bulletin: K-Series Compu-Dobby® 5 Solenoid Alignment
Topic: How to adjust the K-Series solenoid position.
Date: 8/12/24
Overview
This document addresses positioning the K-Series solenoids for optimal operation. The K-Series countermarch
dobby requires solenoids to activate to disengage the dobby cables from lifting harnesses. Misalignment can
cause mislifting or misdropping of harnesses. This document addresses all conditions and their respective
adjustments.
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Summary of Contents for AVL Looms Compu-Dobby 5
- Page 1 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com AVL Tech Bulletin: K-Series Compu-Dobby® 5 Solenoid Alignment Topic: How to adjust the K-Series solenoid position. Date: 8/12/24 Overview This document addresses positioning the K-Series solenoids for optimal operation. The K-Series countermarch dobby requires solenoids to activate to disengage the dobby cables from lifting harnesses.
- Page 2 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com Issues Covered Solenoid tip to dobby cable misalignment – single solenoid. Solenoid tips to dobby cables misalignment – complete row of solenoids.
- Page 3 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com Procedures All of the following procedures are addressed with the upper dobby cover off the loom. Also note, it is very important to have the left treadle weight down when performing these procedures.
- Page 4 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com Solenoid Row Misalignment To maintain proper alignment of the solenoid tips to the dobby cables, it is preferable for the cables to be centered within the solenoid tips.
- Page 5 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com Solenoid In/Out Spacing Solenoid tip in/out spacing in relation to the dobby cables is a compromise of being close enough to control the cable within the U of the tip, yet far enough away to allow the solenoids to build strength as they extend during activation.
- Page 6 2. Trace the solenoid wires back to the black plastic connector housing plugged into a daughter circuit board that is plugged into the main Compu-Dobby 5 circuit board. Cut the zip ties along the way free up the wires.
- Page 7 AVL LOOMS AVL Looms, Incorporated 2360 Park Ave, Chico, CA 95928 Ph: 530-893-4915, Fax: 530-893-1372 www.avllooms.com, support@avlusa.com To remove the entire solenoid pack: 1. Pull each of the black plastic connectors from all of the daughter cards. 2. Unscrew the left and right side screws as indicated by the red arrows in the image below.
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