Rtech POWER TIG 210EXT User manual

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POWER TIG 210EXT DIGITAL TIG WELDER
OPERATION INSTRUCTIONS
Version 2014-1

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Thank you for selecting the R-Tech POWER TIG 210EXT Digital Inverter AC/DC Tig Welder.
The POWER TIG 210EXT Digital has many benefits over traditional TIG welders, including 9
memory stores, advanced AC waveforms, pulse welding, slope up/down, remote foot option
and an industrial 60% duty cycle.
We want you to take pride in operating our POWER TIG 210EXT Digital as much pride as we
have taken in making this product for you. Please read all information in this manual before
operation
PLEASE EXAMINE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY
When this equipment is shipped, title passes to the purchaser upon receipt from the courier.
Consequently all claims for material damaged in shipment must be made by purchaser against the
transportation company used.
Please record your equipment identification below for future reference. This information can be found on
data plate at rear of machine.
Product POWER TIG 210EXT DIGITAL
Serial No. ___________________________________
Date of Purchase _____________________________
Where Purchased _____________________________
Whenever you request replacement parts or information on this equipment please always supply
information you have recorded above
This product is covered by our 2 year collect and return UK warranty, External items, torch, earth lead
etc are covered by 3 months warranty. Any faults/damage found caused by customer will be charged
pro-rata.
Pay particular attention to the safety instructions we have provided you for your protection
The level of seriousness to be applied to each section is explained below
WARNING
This statement appears where the information must be followed exactly to avoid serious personal
injury.
CAUTION
This statement appears where the information must be following to avoid a minor personal injury or
damage to this equipment.

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Introduction
The R-Tech POWER TIG 210EXT Digital is a member of our field acclaimed family of welding
products. Premium features include:-
1. Inverter power source – more efficient to operate, provides smoother weld characteristics.
2. Full Featured Pulse welding in AC & DC Tig welding modes
3. HF Arc start – Easy arc striking and prolonged tungsten life
4. Slope up / slope down
5. Remote foot pedal option
6. Digital control panel with 9 memory store function.
7. Industrial 60% Duty cycle at 210 Amps @ 40C
8. Easy setup mode for automatic setting of parameters.
Recommended Processes
The R-Tech POWER TIG 210EXT Digital is recommended for the Tig welding processes within its
output capacity of 210 Amps
Equipment Limitations
The R-Tech POWER TIG 210EXT Digital is protected from overloads beyond the output ratings and
duty cycle as per machine specifications with thermostat protection of the output coils and rectifiers.
Welding Capability – Duty Cycle
The R-Tech POWER TIG 210EXT Digital is rated at 210 Amps at 60% duty cycle on a ten minute
basis. If the duty cycle is exceeded a thermal protector will shut machine off until the machine
cools.
Technical Specifications
Model No.
POWER TIG 210EXT DIGITAL
Input
240V AC 50/60Hz PFC
Input Amperage TIG 16A MMA 23A
MMA
No-load Voltage
70v
Current Range
20A – 160A
Rated Output Current
160A @ 35%, 130A @ 100%
Arc Force Control
0 - 100%
Hot Start
0 - 2 seconds
Hot Start Amps %
0 -100%
VRD Safety Function
Yes
TIG
No-load Voltage
70v
Current Range
5A – 210A DC Mode, 10A - 210A AC Mode
Rated Output Current
210A
Duty Cycle Tig
60% @210A
Up-Slope Time
0-25 Seconds
Down-Slope Time
0-25 Seconds
Pulse Frequency Range
0.1 - 500 Hz DC
0.1 - 250 Hz AC Advanced Squarewave
0.1 - 10 Soft Square, Triangular & Sinewave
Pulse Width Range
3 - 100%

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Pulse Amperage Range
5 - 95%
Gas Post Flow Time
0 - 50 Seconds
Gas Pre Flow Time
0 - 25 Seconds
Arc Starting Mode
High Frequency
AC Waveforms
Advanced Squarewave
Soft Squarewave
Triangular
Sine Wave
AC Balance Control
5 - 90% of Electrode Positive
AC Easy Start Parameters
AC Frequency 120Hz
AC Balance 25%
Pre flow Gas .5 seconds
Post Flow Gas 4 seconds
Main Amps 120A
Start/End Amps 50A
Upslope 1 seconds
Downslope 3 seconds
DC Easy Start Parameters
Pre flow Gas .5 seconds
Post Flow Gas 4 seconds
Main Amps 90A
Start/End Amps 50A
Upslope 1 seconds
Downslope 3 seconds
Gross Weight
24 KG
Insulation
IP21S
Dimensions mm
438H x 232W x 550L (mm)
Safety Precautions
Read entire section before starting installation
WARNING!
Electric Shock can kill – Only qualified personnel should perform this installation. Turn off input
power at the fuse box before working on this equipment. Do not touch electrically live parts. Always
connect the machine to an earthed mains supply as per national recommended standards.
Select suitable location
Place the welder where clean cooling air can freely circulate in and out of the front & rear louver
vents. Dirt, dust or any foreign material that can be drawn through vents into welder must be kept to
a minimum. Failure to observe these precautions can result in excessive operating temperatures
which can lead to plant failure.
Grinding
Do not direct grinding particles towards the welder. An abundance of conductive material can cause
plant failure.
Stacking

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This machine cannot be stacked.
Transport – Unloading
Never underestimate the weight of equipment, never move or leave suspended in the air above
people. Use recommended lifting equipment at all times.
WARNING!
Falling Equipment can cause injury. Never lift welder with gas bottle attached. Never lift above
personnel.
Tilting
Machine must be placed on a secure level surface or on a recommended undercarriage/trolley.
This machine may topple over if this procedure is not followed.
Environmental Rating
The welding power source carries the IP21S rating. It may be used in normal industrial and
commercial environments. Avoid using in areas where water / rain is around.
Read and follow the ‘Electric Shock Warnings’ in the safety section if welding must be performed
under electrically hazardous conditions such as welding in wet areas or water on the work piece.
Electrical Installation
WARNING!
ELECTRIC SHOCK CAN KILL
Machine grounding and High Frequency Interference Protection
This welder must be grounded to earth. See national electrical codes fro proper grounding
methods.
The high frequency generator being similar to a radio transmitter may cause interference to radio,
TV and other electronic equipment. These problems may be the result of radiated interference.
Proper grounding methods can reduce or eliminate this.
Radiated interference can develop in the following ways
1. Direct interference from welder power source
2. Direct interference from the welding leads

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3. Direct interference radiated from feedback into power lines
4. Interference from re-radiation by un-grounded metallic objects.
Keeping these contributing factors in mind, installing equipment as per following instructions should
minimize problems.
1. Keep the welder input power lines as short as possible and enclose as much of them as
possible in metal conduit or equivalent shielding. There should be a good electrical contact
between this conduit and ground (Earth).
2. Keep the work and electrode leads as short as possible. Tape the leads together where
practical.
3. Be sure the torch and earth leads rubber coverings are free from cuts and cracks that allow
welding power leakage
4. Keep earth lead connection to work in good condition – Clean area on workbench where
earth clamp is situated on a regular basis.
Input Connections
Make sure the voltage, phase and frequency of input power is as specified on machine rating plate
located at rear of machine.
Have a qualified electrician provide suitable input power as per national electrical codes. Make sure
machine is earthed / grounded.
Make sure fuse or circuit breaker is correct rating for machine. Using fuses or circuit breakers
smaller than recommended will result in ‘nuisance’ shut off from welder inrush currents even if
welding at low amperages.
Failure to follow these instructions can cause immediate failure within the welder and void
machines warranty.
Turn the input power OFF at the mains switch & fuse box before working on this equipment.
Have a qualified electrician install & service this equipment.
Allow machine to sit for 5 minutes minimum to allow the power capacitors to discharge before
working inside this equipment. Do not touch electrically live parts
The POWER TIG 210EXT DIGITAL Inverter Tig Welder requires a 240V 50/60Hz supply. It requires
a 16A supply for Tig operation and 23A for MMA welding. It comes with a 2.5 metre mains cable
attached.
Connect wires according to national coding.
Brown wire – Live
Blue wire – Neutral
Green/Yellow Wire – Earth (Ground)

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Connecting to a mains electrical supply
THIS MACHINE IS OF AN INDUSTRIAL SPECIFICATION AND MUST BE
FITTED TO A MINIMUM of 23AMP 240V MAINS INPUT
Connecting to an Engine Driven Generator
If connecting this machine to an engine driven generator please ensure the
following
Minimum Generator KVA Output – 7.0 KVA continuous
Generator to be fitted with AVR (automatic voltage regulation)
DO NOT USE ON A GENERATOR WITHOUT AVR
Connecting to a generator without the above minimum requirements will in-
validate your warranty.

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Connections for POWER TIG 210EXT Digital
Rear machine connections
Fig 1
1. On/Off Switch
2. 240V AC Auxiliary output
Connect water cooler to socket, when machine is turned on by on/switch it will then output
power from aux socket.
Fig1.1
1. Main chassis earth bolt
If you experience interference you can fit extra earth to this point (Not normally used)
2. Gas Input connector
Connect input gas hose ensuring connection is tight - 34/8 BSP thread
3. Mains input cable
Fit required plug as per your electrical installation

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Connections for TIG (GTAW) Welding
Fig 2
1. Negative power connector -
Connect Tig Torch Dinze to power connector by inserting and twisting until tight
ENSURE TIG TORCH IS FITTED TO NEGATIVE CONNECTOR OTHERWISE YOU WILL
EXPERIENCE TUNGSTEN BURNBACK
2. Gas outlet - Quick release type
Connect the torch gas hose
3. Positive power connector +
Connect the earth lead to by inserting and twisting until tight and the earth clamp to
work/bench
4. Torch control socket 7-Pin
Connect torch control plug
To avoid a High Frequency shock keep the Tig torch in good condition and replace if any of the
insulation is damaged.
Connect the gas input hose to gas regulator and use ‘Pure Argon’ Gas, available from local
suppliers. Set gas flow/pressure to 8-12 LPM. Make sure gas bottle is secured to avoid injury.
Remote Foot Pedal connection.
Disconnect Tig Torch switch plug from torch control socket (Fig2.4) and connect plug from foot
pedal.