Rtech MTS251TFT Manuale utente

www.r-techwelding.co.uk

email: salesdept@r-techwelding.co.uk

Tel: 01452 733933 Fax 01452 733939

R-TECH MTS251TFT

DIGITAL MIG - MMA - DC TIG WELDER

OPERATION INSTRUCTIONS

Version 2023-12-V1

Index

Page

Introducon 4

Safety Precauons 6

Electrical Installaon 7

Technical Specicaons 9

Connecons 11

Controls & Sengs 14

MIG EASY SETUP 19

MIG Manual Mode 20

DC TIG EASY SETUP 22

DC TIG Manual Mode inc. spot/tack 23

Memory Storing 28

MMA STICK EASY SETUP 29

MMA STICK Manual Mode 30

Fault Finding 32

Safety Informaon 33

Thank you for selecng the R-Tech MTS251-TFT Digital MIG, DC TIG & MMA Welder.

The MTS251-TFT has many benets over tradional welders, including colour screen with easy

navigaon & EASY SETUP, 20 memory stores, MIG welding with oponal spool on gun, DC HF

TIG pulse welding with spot and tack funcons, remote foot pedal opon and an industrial 35%

duty cycle.

We want you to take as much pride in operang our MTS251-TFT Digital as much pride as we

have in making this product for you. Please read all informaon in this manual before operaon

PLEASE EXAMINE CARTON AND EQUIPMENT FOR DAMAGE IMMEDIATELY

When this equipment is shipped, tle passes to the purchaser upon receipt from the courier. Con-

sequently all claims for material damaged in shipment must be made by purchaser against the

transportaon company used.

Please record your equipment idencaon below for future reference. This informaon can be found

on data plate at rear of machine.

Product: MTS251-TFT

Serial No.

Date of Purchase

Where Purchased

Whenever you request replacement parts or informaon on this equipment please always supply

informaon you have recorded above

Pay parcular aenon to the safety instrucons we have provided you for your protecon The level of

seriousness to be applied to each secon is explained below

This statement appears where the informaon must be followed exactly to avoid serious per-

sonal injury.

CAUTION

This statement appears where the informaon must be following to avoid a minor personal inju-

ry or damage to this equipment.

Introducon

The R-Tech MTS251-TFT digital MIG - MMA - DC TIG welder is a member of our eld acclaimed family of

welding machines. Premium features include

Large TFT Screen

35% Industrial duty cycle

Inverter power source - more ecient

Electronic HF for fast arc starng in DC TIG and low interference

EASY SETUP MIG - MMA - DC TIG

Professional weld sengs built in

Sengs from 1.0 to 8mm pre-installed for easy setup

Simple to use easy navigaon - no complicated menus - all sengs on single screen.

MANUAL MODE DC TIG

Full control of every weld parameter you could ever need

Pre-ow gas, start amps, slope up me, main amps, slope down me, end amps and post ow gas

2 Start modes - HF Fast start & LIFT

2T, 4T, foot pedal & torch switch control modes

4TS trigger mode, Ideal for pipe welding, switch from start to main amps as required

DC Pulse up to 150Hz

20 professional memory stores

Spot welding - Spot weld feature with sch funcon

Fast Tack welding - Tack weld feature with stch funcon

Welding Capability – Duty Cycle

The R-Tech MTS251-TFT Digital is rated at 250 Amps at 35% duty cycle on a ten minute basis. If the duty

cycle is exceeded a thermal protector will shut machine o unl the machine cools.

Safety Precauons

Read enre secon before starng installaon.

Warning!

Electric Shock can kill – Only qualied personnel should perform this installaon. Turn o 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 naonal recommended standards.

Select suitable locaon

Place the welder where clean cooling air can freely circulate in and out of the front & rear louvre vents.

Dirt, dust or any foreign material that can be drawn through vents into welder must be kept to a mini-

mum. Failure to observe these precauons can result in excessive operang temperatures which can lead

to plant failure.

Grinding

Do not direct grinding parcles towards the welder.

An abundance of conducve material can cause plant failure.

Transport & unloading

Never underesmate the weight of equipment, never move or leave suspended in the air above people.

Use recommended liing/handling equipment at all mes.

Electrical installaon

WARNING ELECTRIC SHOCK CAN KILL

Electric Shock can kill – Only qualied personnel should perform this installaon. Turn o 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 naonal recommended standards.

Machine grounding and High Frequency Interference Protecon

This welder must be grounded to earth. See naonal electrical codes for proper grounding methods.

The high frequency generator being similar to a radio transmier 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

3. Direct interference radiated from feedback into power lines

4. Interference from re-radiaon by un-grounded metallic objects.

Keeping these contribung factors in mind, installing equipment as per following instrucons should

minimize problems.

1. Keep the welder input power lines as short as possible and enclose as much of them as possible in met-

al 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 praccal.

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 connecon to work in good condion – Clean area on workbench where earth clamp is

situated on a regular basis.

Electrical installaon cont.

Input Connecons

Make sure the voltage, phase and frequency of input power is as specied on machine rang

plate located at rear of machine.

Have a qualied electrician provide suitable input power as per naonal electrical codes. Make

sure machine is earthed / grounded.

Make sure fuse or circuit breaker is correct rang for machine. Using fuses or circuit breakers

smaller than recommended will result in ‘nuisance’ shut o from welder inrush currents even if

welding at low amperages.

Failure to follow these instrucons can cause immediate failure within the welder and void ma-

chines warranty.

Turn the input power OFF at the mains switch & fuse box before working on this equipment. Have

a qualied 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 MTS251-TFT requires a 240V 50/60Hz supply. It requires a 32A supply. It comes with a 2.5

metre mains cable aached.

Connect wires according to naonal coding.

Brown wire – Live

Blue wire – Neutral

Green/Yellow Wire – Earth (Ground)

Connecng to an Engine Driven Generator

If connecng this machine to an engine driven generator please ensure the following

Minimum Generator KVA Output – 10 KVA connuous Generator to be ed with AVR (automac

voltage regulaon) DO NOT USE ON A GENERATOR WITHOUT AVR

Connecng to a generator without the above minimum requirements will in- validate your war-

ranty.

Input 240V AC 50/60Hz Input amperage 32A

Gross weight 28 KG

Dimensions 470H x 280W x 640L (mm)

Insulaon IP21S

MIG Operaon Current range DC 30A - 250A

No load voltage 85V

Duty cycle 35% @ 250A, 60% @200A

MIG EASY SETUP - Programs for Wire Type - Mild steel .6mm 0.8, 1, 1.2, 1.5, 2mm

Wire Type - Mild steel .8mm 0.8, 1, 1.2, 1.5, 2, 3, 4mm

Wire Type - Mild steel 1.0mm 0.8, 1, 1.2, 1.5, 2, 3, 4, 5, 6, 7, 8mm

Wire Type - Stainless steel .6mm 0.8, 1, 1.2, 1.5, 2mm

Wire Type - Stainless steel .8mm 0.8, 1, 1.2, 1.5, 2, 3, 4mm

Wire Type - Stainless steel 1.0mm 0.8, 1, 1.2, 1.5, 2, 3, 4, 5, 6, 7, 8mm

Wire Type - Flux cored steel .8mm 1.5, 2, 3, 4, 5mm

Wire Type - Flux cored steel 1.0mm 1.5, 2, 3, 4, 5, 6, 8mm

Wire Type - Aluminium .8mm 1.5, 2, 3, 4mm (for spool gun)

MIG Manual sengs Pre-ow gas me 0 - 10s

Upslope 0 - 1s

Inductance 0 - 100

Spot me .5 - 15s

Stch me 0 - 15s

Burnback 0 - 2s

Downslope 0 - 1s

Post ow gas me 0 - 10s

Trigger modes Manual mode 2T,4T

Spool gun mode Yes

Technical specicaons

DC TIG Operaon Current range DC 10A - 250A

No load voltage 78V

Duty cycle 35% @ 250A, 60% @200A

Arc starng modes HF, Li

Trigger modes Manual mode 2T,4T,4TS, REMOTE PEDAL,2T+F, 4T+F

Trigger modes EASY SETUP 2T,4T, REMOTE PEDAL, 2T+F, 4T+F

TIG EASY SETUP DC - Programs for Metal type Steel

Metal thickness programs 1.6 Tungsten 1, 1.2, 1.5, 2, 3mm

Metal thickness programs 2.4 Tungsten 1, 1.2, 1.5, 2, 3, 4, 5, 6, 8mm

TIG DC Manual sengs Pre-ow gas 0 - 10 seconds

Up-slope / Downslope me 0 - 10 seconds

Start / End amps 10A

Post-ow gas me 0 - 10 seconds

DC Pulse amps 3 - 95%

DC Pulse width (me) 5 - 95%

DC Pulse Hz 0.5 - 150 Hz

Memory sengs YES - 20

TIG DC Manual SPOT Mode Spot weld me 0.1 - 10 seconds

Spot weld stch me 0 - 5 seconds

TIG DC Manual TACK Mode Tack weld me 10ms - 250ms

Tack weld sch me 10ms - 250ms

MMA EASY DC - Programs for Rod types mild steel 6011, 6013, 7014, 7018

Rod diameter 2.4, 3.2, 4.0mm

2.4mm thickness programs 1.5, 2, 3, 4, 6mm

3.2 mm thickness programs 3, 4, 5, 6, 8mm

4 mm thickness programs 4, 5, 6, 8, 10mm

MMA Manual DC Amp range 10 - 200A

Duty cycle MMA 35% @ 200A, 60% @160A

An sck YES

Hot start me 0 - 2 seconds

Hot start % 0 - 100%

Arc Force 0 - 100%

Cellulosic Rods YES

Technical specicaons

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