Helvi AUTOFEED 450 Manuel D'instruction page 18

Precisions regarding functions SW5 to SW8:
Verification of the voltage, current and wire speed measurements should be carried out yearly. If the values are found to be incorrect, it is possible to
adjust the displayed values by +/- 20%. To do this, it is necessary to have access to:
- a power source able to supply 425A, with a minimum no-load voltage of 70V.
- a resisted load that will allow the generator to supply current
- calibrated measuring devices: dc voltmeter, dc metric ammeter clamp, dynamometer to measure the speed at the surface of the feed rolls.
Connect the generator to the case and to the resisted load out of the case. Place the voltmeter between the end of the torch and the cases's earth
clamp. Place the metric ammeter clamp around the welding torch. Measure the wire speed on one of the drive rolls, by lifting the pressure rolls or
using a dynamometer able to measure the speed directly on the surface of the wire.
Select the function SW5 to SW8 required (one at the time) and switch the unit on. Adjust the value displayed on the machine using push-buttons 10
and 11, on several points covering the range of the unit. Button 11 is used to decrease the displayed value and button 10 to increase it.
The selected values are automatically displayed and saved.
Error messages :
Error
Err 001
Err 002
Err 003
MACHINE CONTROL AND MAINTENANCE DETAILS
Machine maintenance or alteration should only be carried out by a qualified person. Failure to comply may void the warranty. Any work must be carried
out when the machine is switched off and not connected to the mains. Wait 5 minutes after the machine is disconnected. Seal off the working area
if necessary.
Daily:
- Check the torch, the rollers and the connections.
Twice a year :
- Clean the inside of the machine with a compressed air cleaner.
- Be careful not to introduce conductor parts in the machine such as the torch.
- Check the condition and tightening of connectors, tighten up if necessary.
- Check the following parts: electrical, gas, wire reel support, wire-feeding motor and bottle support.
- Check and adjust if required the displayed measurements.
AUTOFEED 450
Meaning
Torch trigger pushed in when switching the unit on.
Wire feed button or gas purge button pushed in when switching the unit on.
2 functions (SW4 to 8) simultaneously activated
18
EN