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OPERATION
cmha2p
43
Front panel LHN 130
1. Current setting potentiometer.
2. Socket outlet for connecting a remote control unit (only LHN 140/200). If the remote
control is fitted, control of the machine is automatically transferred to the remote control
unit.
3. The white indicating lamp on the front panel is lit, when the power supply is turned on.
The mains switch on Caddy is fitted on the rear panel.
4. In order to prevent long- - duration overloads, the machine incorporates a thermal overload
cutout that operates before the temperature becomes excessive. Operation of the cutout is
indicated by a yellow LED (4) on the front panel, and by refusal of the machine to weld.
The overload protection resets automatically when the temperature has fallen to a safe
level.
Welding with coated electrodes
Caddy supplies a DC welding current, suitable for welding the majority of metals, unalloyed
and alloyed steels, stainless steel and cast iron.
The Caddy 130/140 is suitable for use with the majority of coated electrodes from 1.6 mm to
3.25 mm diameter, while the Caddy 200 can be used with electrodes up to 4.0 mm diameter.
TIG welding
TIG welding is particularly suitable for use when welding quality requirements are high, as
well as for use with thin sheet metal.
Strike the arc by scraping the tungsten electrode lightly against the workpiece.
For use with TIG welding, Caddy must be fitted with a TIG welding torch with gas valve, a
bottle of argon gas, an argon gas regulator, a tungsten electrode and, as required, suitable
filler material.
Safety
Fortunately, accidents in connection with welding are uncommon. Nevertheless, everything
can be misused, and carelessness can result in serious accidents.
Read the warning notice at the beginning of this service manual.
cmha2de1
cmha2p08
Fron tpanel LHN 140/200
- - 33 - -
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