Unitor UWW-161 TP Instruction Manual
Revision date: 23 09 2014 Page 1 of 32
Instruction manual
& spare parts list
Unitor Welding Inverter
UWW-161 TP
Multi Process MIG-MAG-MMA-TIG
TP (total protection) version, from serial number 111194
Revision date: 23 09 2014 Page 2 of 32
DECLARATION OF CONFORMITY
₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪
We hereby state that the machine type
UWW-161TP
TP (Total Protection)
version
s.n.: 111194 and higher
₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪
is in compliance with the directives
2004/108/CE
2006/95/CE
₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪
and that the following standards apply
EN 60974-1
EN 60974-5
EN 60974-10
₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪₪
Belvedere, Maggio 2004
Amm. Giorgio TONIOLO
WECO srl
Via S. Antonio, 22 - BELVEDERE
36050 TEZZE SUL BRENTA (VICENZA) ITALY
Tel. +39 0424 561943 - Fax +39 0424 561944
E-mail info@weco.it - www.weco.it
P. IVA 02783960244 - C.F. 02710490281
Reg. Impr. VI n° 52214 - R.E.A. N° 274736
Capitale sociale i.v. € 52.000,00
UWW-161TP s.n.: 111194 and higher is also in compliance with the
RoHS directive 2002/95 CE
Revision date: 23 09 2014 Page 3 of 32
CONTENTS
1. GENERAL DESCRIPTION
2. IDENTIFY COMPONENTS
3. TECHNICAL DATA
4. INSTALLATION
5. FRONT PANEL
6. SPOOL COMPARTMENT
7. WIRE LOADING
8. OPERATING INSTRUCTIONS
9. WIRE WELDING CONSUMABLE SPARES
10. WIRE WELDING ACCESSORIES
11. SHIELDING GAS ACCESSORIES
12. TIG ACCESSORIES
13. MAINTENANCE
14. TROUBLESHOOTING
15. WIRING DIAGRAM
16. COMPONENTS AND SPARES
17. SAFETY INSTRUCTIONS
18. YOUR OWN NOTES
DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING
THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT
Revision date: 23 09 2014 Page 4 of 32
1. GENERAL DESCRIPTION
UWW-161 TP is a compact and portable Single Phase Inverter Power Source for professional MIG-MAG,
TIG and MMA welding.
It connects to a standard 230V one phase socket, preferably with slow fuses to allow full power.
The TP (total protection) version is protected against too high input voltage and will close down completely to
prevent damage if input voltage exceeds 285V. A led on the rear panel will be lit to indicate that the
protection is on. When the input voltage is reduced welding power will automatically be restored.
The automatic Voltage Reducing Function provides operator safety by reducing “touchable” voltage for the
operator to max. 10V between electrode holder and work-piece.
The automatic Amperage Draw Protection will cut the current to prevent damage to the machine, and sound
an alarm tone to warn the operator if welding with the set wire welding parameters exceeds the capacity of
the unit.
UWW-161 TP is easy to transport, only 12kg weight and it is specifically designed for light fabrication,
maintenance and repair work on board.
It offers excellent MIG-brazing characteristics using CuSi3 and CuSi6 type wires.
Polarity change for Euro-connector allows welding with self shielded wires.
User-friendly control panel allows precise parameters settings using only two knobs.
Selection between a softer and crisper arc allows optimal arc for various wires.
Built-in wind tunnel cooling protects electronic devices from dust and saltiness, improving the UWI-161 MP
arc welder’s life cycle.
• Light weight and reliable
• Up to 3,25mm electrodes in MMA
• Lift arc TIG DC ignition reduces Tungsten inclusions without generating the radio interference that High
frequency arc start may cause.
• Excellent MIG/MAG welding properties.
• Polarity selection for self-shielded wire welding.
Revision date: 23 09 2014 Page 5 of 32
2 IDENTIFY COMPONENTS
UWW-161 TP complete, product number 193-161161 is delivered with
1
Primary cable, 2.5m with plug (fitted on machine)
1 piece
2
Gas hose socket with nut and hose clamp
Product number 161165
1 set
3
Drive roll V groove, 0.6-0.8mm (fitted in machine)
Product number 160003
1 piece
4
Outgoing wire guide tube for mounting in the wire drive unit
1 piece
5
MIG/MAG torch M-161 with 3m cable and euroconnector
Product number 161163
1 piece
6
Steel liner (fitted in torch cable)
Product number 613746
1 piece
7
Contact tip 0.8mm, (fitted in torch)
Product number 711994
1 piece
8
Return clamp with 3m cable and connector
Product number 633164
1 set
9
Electrode holder with 3m cable and connector
Product number 627877
1 set
10
Carrying strap for mounting on the machine
1 piece
11
Instruction Manual
1 piece
1
9
10
11
8
5 6 7
4
3
2
Revision date: 23 09 2014 Page 6 of 32
3 TECHNICAL DATA
Type of welding machine
Processes
Safety Marking
Suitable for use in areas with increased electric shock hazard
The unique serial number for the
machine will be printed here.
Always give serial number when
ordering spares or in other
communication with WSS
concerning your machine.
One-phase static transformer rectifier
frequency converter, DC output.
MMA (Stick
electrode /
SMAW)
TIG
(GTAW)
MIG/MAG (Metal Inert Gas/Metal Active Gas)
GMAW (Gas Metal Arc Welding)
FCAW (Flux Cored Arc Welding)
TP
Revision date: 23 09 2014 Page 7 of 32
X: Duty cycle
Duty Cycle is percentage of 10 minutes that unit can weld at rated load without overheating.
It refers to a 40°C environmental temperature. If unit overheats a thermal switch stops the output, the
warning light for over-temperature is lit and the cooling fan continues to run. Wait fifteen minutes for unit to
cool. Reduce amperage or duty cycle before starting to weld.
I2= Welding current.
Range 5 – 140 / 160A
U0 = No-load voltage
Also called open circuit voltage, is the voltage (excluded any stabilization voltage or arc ignition) found
between the output outlets when the welding machine is not welding. This is the voltage a welder can be
exposed to between electrode holder and work piece.
U2 = Arc voltage
Voltage present between the output outlets when welding is being carried out, in relation to a particular set
current. The relation, for the various welding modes is the following:
MMA→U2=20+0,04*I2, TIG →U2=10+0,04*I2, MIG/MAG→U2=14+0,05*I2
Primary connection
U1 = Effective input voltage 230V
I1max = Maximum value of input current at the corresponding duty cycle.
I1eff = Effective value of input current at the corresponding duty cycle.
Maximum input power is 5,4 kVA. Power factor 0,79. Duty Cycle 35%
Cooling
COOLING AF= Forced air cooling (with a fan).
Protection class
IP23S= Ingress Protection class. Protection degree of the casing according to EN 60529
2: Protection against object not greater than 80mm in length and 12mm in diameter
3: Protection from sprayed water at an angle of 60º from vertical
S: Valid when switched off. If welding in heavy rain the cooling air can drag in moisture.
Thermal insulation class
I.CL.H= Thermal class of the insulating materials and insulation systems resistant up to 180°C.
Standards
EN 60974-10 European Norm for electromagnetic compatibility.
EN 60974-1/5 European Norm for arc welding appliance: Current sources for welding.
Mark stating conformity to all safety standards and other standards required for sale
within the European Union
Dimensions and weight
Height : 325mm
Length : 460mm
Width : 230mm
Weight : 12,2kg
Revision date: 23 09 2014 Page 8 of 32
4 INSTALLATION
Only qualified personnel should perform this installation.
Only personnel that have read and understood this Manual should install and operate this equipment.
The machine must only be plugged into a receptacle which is grounded per applicable electrical codes.
Note 1
The power switch is to be in the OFF position when installing work cable and torch and when connecting
power cord to input power.
Note 2
The parts behind the wire drive door are live when wire welding. Never open or leave this door open while
welding
SELECT SUITABLE LOCATION
The UWW-161TP has an IP23S rating. Locate the welder in a dry location where there is free circulation of
clean air into the back and out the front of the unit.
Ensure minimum 50cm free space from the back of the machine. If free flow of air is hindered the machine
will overheat.
A location that minimizes the amount of smoke and dirt drawn into the machine reduces the chance of dirt
accumulation that can block air passages and cause overheating.
AVOID TILTING
The machine must be placed on a secure, level surface, maximum 10º out of horizontal.
ASSEMBLY
To the back panel
1 Primary connection 230V 50/60Hz 1phase
+ protective earth. 2,5m cable 3x2,5mm²
with plug is included
2 Gas Cylinder with Argon, Argon/CO2 or
CO2 (not included with machine)
3 Gas regulator with flow adjustment (not
included with machine)
4 Gas hose (not included with the machine)
5 Hose socket with nut and hose clamp for
6mm (1/4”) hose, included with the machine
Inside the machine
6. Spool of welding wire
(not included with the machine)
7. Wire feed roll V-groove for 0,6-0,8mm wire
To the front panel
8.a MIG torch (included with the machine) to the Euro-connection
- then select polarity to the Euro-connection with the cable and Dix-connector on the front panel.
- then connect the return cable to the other polarity. MIG torch is included with the machine
8.b TIG torch (not included with the machine) to the Euro-connection
- then select – (negative) polarity to the Euro-connection with the cable and Dix-connector on the front panel.
- then connect the return cable to the + (positive) polarity
8.c Electrode holder (included with the machine) for MMA welding to the + or – socket depending on the type of
electrode to be used
8.d Return clamp (included with the machine) for all processes to the free (+ or -) socket.
On (I) OFF (0) Switch
Gas inlet
LED indicating that
protection against too high
input voltage has been
activated
Important!
To prevent overheating the machine requires at least 0,5 m
free distance at the back to allow free flow of cooling air.
8
Revision date: 23 09 2014 Page 9 of 32
POLARITY SELECTION
In the picture below the cable supplying current to the Euro-connector is connected to the machine plus-
connection. The cable to return current (ground clamp) then has to be connected to the machine minusconnection to the right in the picture. This means the machine is set for welding with electrode plus polarity
from the Euro-connector to the right, which is the normal setting for MIG/MAG welding.
For Self-shielded wires (without shielding gas) and for TIG welding the minus polarity should normally be
selected, and the return clamp should be connected to the plus polarity.
For stick electrode welding (MMA) the cable in the picture is disconnected as shown in the drawing, and
electrode cable and return cable are connected to plus and minus according to the requirements of the
electrode that is going to be used.
+
_
Euro-connector for
TIG and MIG torch
The outgoing wire
guide tube is inserted
here, slightly bent to
prevent it from falling
out when the MIG
torch Euro-connector is
disconnected.
Revision date: 23 09 2014 Page 10 of 32
5 FRONT PANEL
1. Wire speed adjustment. See separate table under OPERATION for relation between wire speed and
approximate welding current. This adjustment is only active when one of the wire welding modes are
selected
2. When this LED is lit, it means that the thermal cut-out for overheating of the machine has triggered
and there is no welding current. Do not switch the machine off. The fan will be running and the
thermostat resets automatically when the machine has cooled down sufficiently. The light will darken
when the machine is live again.
When the machine is switched on, this LED is lit for five seconds, during which time there is no
welding current available.
3. Power on. When this LED is on welding current is available. In MMA (stick electrode) welding mode
the open circuit voltage of 10V is present between + and – terminals.
4. Warning light indicating live terminals
5. Welding current / voltage adjustment. The green scale A 5-140 show selected amperage for MMA
(stick electrode) welding. The white scale V 10-26 show selected voltage for MIG (wire) welding
6. Wire feed function. By pressing this knob wire will be fed through to the torch without being
electrically live.
1 2 3 4 5
87 6
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