Riland ARC 250CT User manual

ARC 250CT
WELDING MACHINE
USER MANUAL

Preface
This manual includes hardware description and operation introduction of the equipment. For your and other
people’s safety, please read the manual carefully.
Pay attention
Pay attention to the words after the signs below.
Sign
Description
The words after this sign means there is great potential danger,
which may cause major accident, damage or even death, if it is not
followed.
The words after this sign means there is some potential danger,
which may cause hurt or property lose, if it is notfollowed.
The words after this sign means there is potential risk, which may
cause equipment fault or break, if it is not followed.
Version
Version YF-TAE-0060, A1, Released on 22th, Jan, 2018.
The contents of this manual are updated irregularity for updating of product. The manual is only used as
operation guide, except for other promises. No warranties of any kind, either express or implied are made in
relation to the description, information or suggestion or any other contents of the manual.
The images shown here are indicative only. If there is inconsistency between the image and the actual
product, the actual product shall govern.

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Content
SAFETYWARNING........................................................................................................................................... 4
MACHINE DESCRIPTION................................................................................................................................. 9
TECHNICALPARAMETERS TABLE..........................................................................................................................10
INSTALLATION INSTRUCTION........................................................................................................................11
OPERATION INSTRUCTION........................................................................................................................... 12
PANELFUNCTION INSTRUCTION................................................................................................................. 13
NOTES OR PREVENTIVE MEASURES......................................................................................................... 14
QUESTIONS TO BE RUN INTO DURINGWELDING..................................................................................... 15
MAINTENANCE............................................................................................................................................... 16
TROUBLE SHOOTING AND FAULT FINDING................................................................................................ 17

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SAFETY WARNING
The safety notes listed in this manual is to ensure correct use of the machine and to keep you and
other people from being hurt.
The design and manufacture of welding machine considers safety. Please refer to the safety warning
listed in the manual to avoid accidents.
Different damage would be caused by wrong operation of the equipment as follows. Please read the
user manual carefully to reduce such damage.
Sign
Description
 Any contact of electric parts may cause fatal electric shock orburnt.
 Gas and fumes are harmful tohealth.
 Operation in narrow space may cause choke .
 Spark and hot workpiece after welding may causefire.
 Bad connected cable may cause fire.
 Incompletion connection of workpiece side circuit may cause fire.
 Never weld on the case of tinder stuff, or it may causeexplode.
 Never weld airtight containers such as slot, pipe etc., or it may
break.
 Arc ray may cause eye inflammation or skinburnt.
 Spark and residue will burn your eyes andskin.
 Toppling over of the gas cylinder will cause bodyhurt.
 Wrong use of the gas cylinder will lead to high-pressure gas
eruptionand cause human hurt.
 Never let fingers, hair, clothes or etc. near the moving parts such
asthe fan.
 The wire shoot out of the torch may stab eyes, face and other naked
parts.
 The machine is portable, never lift it by anyequipment.

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Please follow the rules below to avoid heavy accidents.
Never use the equipment to do other things but welding.
Follow related regulations for the construction of the input-driven power source, choice of place,
usage of high-pressure gas, storage, configuration, safe-keeping of workpiece after welding and
disposal of waste, etc.
Nonessentials do not enter the welding area.
People using heart pacemaker is not allowed to get close to the welding machine or area without
doctor’s permission. The magnetism created by energizing the welding machine can have a bad
effect to the pacemaker.
Install, operation, check and maintain the equipment by professionpersonnel.
Understanding the contents of the user manual for safety.
Please follow the rules below to avoid electric shock。
Keep away from any electric parts.
Earth the machine and workpiece by professionalpersonnel.
Cut off the power before installation or checking, and restart 5 minutes later. The capacitance is
chargeable device. Please ensure it has no voltage before start again even if the power source is
cut off.
Do not use wire with inadequate section surface or damage insulation sleeve or even exposed
conductor.
Do ensure well isolation of wireconnection.
Never use the device when the enclosure isremoved.
Never use broken or wet insulation gloves.
Use firenet when work at highposition.
Check and maintain regularly, don’t use it until the broken parts are fixedwell.
Turn off the power when not inused.
Follow the national or local related standard and regulations when using the AC welding machine at
narrow or high position.
Please follow the below notes to avoid fire and explode,etc.
No combustible in weldingarea.
Keep off combustible when welding.