User’s Manual
11
E N G L I S H
OPERATING INSTRUCTIONS
ATTENTION:
To properly operate the
welder can assure the welder to work satis-
factorily and can prolong welder’s operating
life. When using the welder, please make sure
there is a good connection of input, output
and earth (ground) before connecting the
power source.
Welding
Connect the power supply cord and welding
output cable according to the operator’s ma-
nual and then connect the power supply, finally
turn on the switch, and the fan starts working.
ATTENTION:
When there is some distan-
ce between the welder and the work piece,
the sectional dimension of the welding cable
must be made bigger just to keep the welder
output potential drop out not more than 4V.
Welding current presetting
Turn the hand wheel to move current indica-
tor to value needed. After presetting, do the
testing to make sure the preset current is co-
rrect. Turn the hand wheel to adjust current, if
fine adjustment is needed. Then start welding.
NOTE:
• Electrode burns at high temperature. Please
do not use hand to replace it.
• The replaced electrode end should be pla-
ced in a metal container. Do not use the elec-
trode holder to clamp the electrode coating.
Removal of Slag
When the welding job is finished, please use
the special slag hammer to knock off the slag
on the surface of welding rail.
NOTE:
• Only until the slag cools off and becomes
hardened can the removal work starts.
• To avoid the slag injuring people, never point
at the nearby people when you remove slag.
MAINTENANCE AND SERVICE
WARNING:
The welder voltage is always
higher, so the safety precaution should be
taken before repair to avoid accidental shock.
Switch off the power source each time when
conducting the examination job. The untrai-
ned people are not allowed to open the case.
•Arc welders are a kind of portable and
moveable arc welding machine. Right per-
formance and maintenance may prolong
its operating life. Only the qualified per-
sonnel are allowed to be in charge of re-
pairing. It is strongly recommended custo-
mers contact with our company or agent
for technical, repairing, accessories supply
and service when they feel unable to
work out the technical hitch or problems.
•Before conducting the repair work,
the power should be cut off first.
• The newly installed welder or which haven’t
been in use for some time needs to be surve-
yed the insulation resistances between each
winding and every winding to case with mi-
llimeter, which can not be less than 2.5 MΩ.
• Keep from the rain, snow and long term expo-
sing to sunlight when welder is used outdoor.
• If the welder is not in use either for a long
time or temporarily, it should be kept dry and
have good ventilation to free it from moistu-
re, erosible or toxic gas. The tolerable tem-
perature ranges from -25 to +55°C, and the
relative humidity can not be more than 90%.
• Regularly check the input & output cables
of welder to guarantee them right and firmly
connected and avoid them being exposed.
Check should be taken once every month
when fixed using and every check taken
when removing.
• Dust removal is needed every year. Check
the machine’s fasteners, moving-iron, current
regulation screws, etc to make sure there are
no loose connection problems.
SOLD9400.indd 11
18/08/15 14:21
