Operating Instructions
DOHLE
Hand Welding Extruder ExOn3A
DOHLE
Extrusionstechnik GmbH
20
Change of the welding shoe
In
order to be sure that no more old welding rod is in the hand welding extrusion, heat up the
machine on operating temperature, remove the welding shoe and change the nozzle
(note:
left hand thread!)
.
Changing the welding filler
Heat up the hand-held welding and extruding machine until operating temperature is
reached to ensure that no welding filler is present in the machine, remove the weld
shoe and exchange the die (caution, left-handed thread) by a new one or by a die
used with the material to be applied now.
Note: with work on heated machine burn danger.
When the nozzle is changed drive for approx. 1 min. the new welding rod in the hand welding
extrusion.
Interruption of the welding
Do not leave the hand welding extruder unsupervised.
The air supply must remain maintained
Switch off the hand welding extruder
Bring the potentiometer of the air heater in position 0 and pull after ca.2 minutes
the power supply plug.
Note: Even after 15 minutes still exists burn danger on bright metal parts.
No water or other materials for accelerating the cooling procedure must be used.
Maintenance
Before maintenance work on the equipment, pull power supply plug!
Maintenance work may be accomplished only by electrical specialists.
Consider the security chapter!
After approximately 300 operation hours the hand welding extruder, including the drive unit
must be cleaned, greased and controlled. These work may be implemented only by electrical
specialists.
Drive
The carbon brushes conductors of the drive must be examined approx. every 120 operation
hours and renewed if necessary.
Deep groove ball thrust bearing /barrel extruder
The deep groove thrust bearing and the barrel extruder should be cleaned approx. every
120 operation hours and again be greased. (Note: Only high temperature grease can be
used.)
