53
EN
No significant acceleration of the wire spool while the “lever + drawback pulley” is
moving upwards
“Lever + drawback pulley” unit is touching the top mechanical limit-stop
Cause:
The wire tensile-force limitation value is set too low
Remedy:
Set a higher value for the wire tensile-force limitation (see: “Setting the wire
tensile-force limitation”)
Cause:
Damper is faulty
Remedy:
Change the damper (see: “Care, maintenance and inspection - Damper”)
Cause:
Excessive wear on the friction linings of the overload coupling
Remedy:
Change the braking lever (comp. with the overload-coupling friction linings)
(see: “Care, maintenance a. inspect. -Overload coupling”)
Cause:
Brake clearance is too small
Remedy:
Set the correct brake clearance (see “Care, maintenance a. inspection -
Brake clearance”)
“Lever + drawback pulley” unit is constantly oscillating up and down
Cause:
Braking system is set for over-rapid response
Remedy:
Set a delayed response (see: “Adjusting the braking system response”)
Cause:
Damper is faulty (piston rod is stuck)
Remedy:
Change the damper (see: “Care, maintenance and inspection - Damper“)
“Lever + drawback pulley” unit badly overshoots, oscillating back and forward over
the working position before finally reaching this position
Cause:
The wire tensile-force limitation value is set too low
Remedy:
Set a higher value for the wire tensile-force limitation (see: “Setting the wire
tensile-force limitation”)
Cause:
Braking force has been set too high
Remedy:
Set a lower braking force (See “Adjusting the braking force”)
No wire is being fed, even though the wirefeeder you are using is working
Cause:
The wire is still “temporarily” fixed inside the housing by the set-screw
Remedy:
Undo the set-screw and insert the wire into the groove of the drawback pulley
(see: “Inserting the welding wire”)
Wirefeeding is impaired
Cause:
Welding wire not inserted correctly
Remedy:
Insert the welding wire correctly (see: “Inserting the welding wire”)
Cause:
Wire spool has been damaged, or wire is not wound on the spool cleanly
Remedy:
Put the damage right, wind the wire on the spool correctly, or use a new wire
spool
Cause:
The wire tensile-force limitation value is set too high
Remedy:
Set a lower value for the wire tensile-force limitation (see: “Setting the wire
tensile-force limitation”)
Summary of Contents for VR 4040
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Page 34: ...34 More details on mounting the end of wire watchdog 2 mm...
Page 55: ...55 EN...
