Lincoln Electric SVM143-A User Manual
Dh-10 heads & controls, Operator’s manual svm143-a, Boom mount or bench models
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Table of contents
Document Outline
- Table of Contents
- Safety
- Section A Installation
- Section B Operation
- Section C Accessories
- Section D Maintenance
- Section E Theory of Operation
- Section F Troubleshooting and Repair
- Symptoms
- Neither drive motor turns when the gun triggers are activated. The displays are lit and the correct input...
- One side’s drive motor does not turn, although the arc voltage is present and the gas solenoid...
- There is NO control of wire feed speed on one side only. Both motors turn, both gas solenoids...
- No control of wire feed speed on both sides. Both motors run, both solenoids operate and arc voltage...
- The wire feeds and the gas solenoid operates but no arc voltage is present.
- The wire feed speed does not change when welding current is established.
- The voltmeter does not function properly. The welding may vary from normal performance. The wire...
- The “Cold Feed Forward” and/or the “Cold Feed Reverse” buttons do not function properly. Both...
- The “Gas Purge” button does not activate the gas solenoid. The gas solenoid operates properly in other modes.
- The “Feeder” button does not function. The feeder head can be selected by pulling the appropriate...
- The “Procedure” button does not function properly.
- The “Timer”, "Control” and/or “Trigger” buttons do not function correctly.
- One of the encoder control knobs functions but the other one does not.
- Neither encoder control knob functions.
- The DH-10 is dead. The displays and LEDs on the keypad are off . The green and red LEDs on the control board are not lit.
- The displays and LEDs on the keypad are off. The green and red LEDs on the control board are both...
- The displays and LEDs on the keypad are off. The green and/or red LEDs on the control board are...
- The wire feed is consistent and adjustable, but operates at the wrong speed.
- The wire feeds for a few seconds and stops. The voltage display reads less than 8 VDC while the wire is feeding.
- The dual procedure switch is not functioning at the gun on either side of the DH-10.
- The dual procedure switch functions properly when attached to one side of the DH-10 but will not operate on the other side.
- An “Er” message is displayed when the DH-10 is powered up.
- A “GLP” message is displayed.
- When the gun trigger is activated the wire feeds and arc voltage is present but gas does not flow.
- The preset arc voltage does not match the actual voltage.
- The preset WFS does not match the actual WFS.
- The wire is feeding rough or not feeding, but the drive rolls are turning.
- The contact tip seizes in the gun liner.
- The welding arc is variable or “hunting”.
- Poor arc striking with sticking or “blast-offs”. The bead may be narrow, ropey and have porosity.
- Section G - Electrical Diagrams