Electrofusion Welder
26/07/2011
www.LaboratoryDrainage.co.uk
Pg 18
It could be caused by the use of long extension leads. If a large fitting is
welded then a high current will be taken from the supply. If extension
leads are used, there will be a volts drop down the lead making the unit
sense a low supply voltage. Try not to use extension leads with the unit. If
you have to then use just 30 feet of cable, the same size fitted to the unit.
14: Relay failed to latch on weld start
This fault could happen when the start button is pressed. If the main
power relays do not operate correctly then this fault will be shown. The
unit needs to be returned for service.
20: Welding current Excessive (>150%)
This fault will happen if the welding current is more than 50% high for
more than 0.3 seconds. This fault is normally caused by a fault within the
unit, a short circuit triac. The unit must be returned for service.
21: Welding current High (>125%)
This fault will happen if the welding current is more than 25% high for
more than 1 second. This fault is normally caused by a fault within the
unit, a short circuit triac. The unit must be returned for service.
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