Paton MINI User manual

PATON ECO DC MMA - 2 -

- 3 - PATON ECO DC MMA
ENGLISH
TABLE OF CONTENTS
1. General 5
2. Start-up 8
2.1. Intended use 8
2.2. Space requirements 8
2.3. Power connection 9
2.4. Connecting the mains plug 9
3. Manual metal arc (MMA) welding 9
3.1. “Hot-Start” function 10
3.2. “Arc Force” function 10
3.3. “Anti-Stick” function 11
4. Care and maintenance 11
5. Generator operation 12
6. Storage 12
7. Transportation 12
8. Technical data 12
9. Scope of supply 13
10. Trouble shooting 14
11. Safety rules 15
12. Source schematic wiring diagram 17
13. Warranty obligations 19

PATON ECO DC MMA - 4 -
Connection to the mains/power distribution panel (at 25°C):
CAUTION! Please, pay attention to wall wires and other extension cords!
Used electrode Set current value
Cross-section of
each core of the
mains wire, sq. mm
Maximum wire
length, m
1x 220/230V – MINI, ECO-160, ECO-200, ECO-250
Ø2 mm not more than 80 А
1.0
75
1.5
115
2.0
155
2.5
195
4.0
310
6.0
465
Ø3 mm not more than 120 А
1.5
75
2.0
105
2.5
130
4.0
205
6.0
310
Ø4 mm not more than 160 А
2.0
75
2.5
95
4.0
155
6.0
230
Ø5 mm fusible not more than 200 А
2.5
75
4.0
125
6.0
185
Ø5 mm
refractory up to 250 A
2.5
60
4.0
100
6.0
150
3 x 380/400V – ECO-315-400V
Ø2 mm not more than 80 А
0.75 100
1.0
135
1.5 205
Ø3 mm not more than 120 А
1.0
90
1.5 135
2.5 220
Ø4 mm not more than 160 А
1.5
95
2.5 160
4.0
260
Ø5 mm not more than 220 А
1.5 70
2.5 115
4.0
180
Ø6 mm not more than 315 А
1.5 45
2.5
75
4.0 115

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CAUTION! The mains button on the back of the MINI and ECO-160/200/250 models
is not a power button, therefore, when the unit is turned off, it does not de-energize
all internal electronics completely. For this reason, be sure to disconnect the plug
from the mains after completing welding work, for safety reasons.
1. GENERAL
PATON MINI, ECO-160, ECO-200, ECO-250, ECO-315-400V inverter rectifiers are
designed for direct-current manual metal arc (MMA) welding. The ECO series is designed for
demanding users who need the most compact and functional unit at its full rated current of
150A/160A/200A/250A/315A, respectively. This is enough to work with any electrodes from
Ø1.6mm to Ø6mm, including refractory ones (for ECO-315-400V), while the load duration is
at least 40%, which will allow solving most of the tasks with plenty to spare not only in the
domestic sector (workshops, auto services, etc.).
All PATON MINI and ECO branded models are equipped with an under-voltage
protection unit.
By increasing the frequency of the applied voltage to the transformer, it decreases
tens of times, which is why the unit has several times less weight and overall dimensions with
the same output parameters in comparison with conventional equipment.
Main advantages:
1. In addition to protection against voltage surges, a stabilization system is installed for
operation with significant long-term voltage drops in the supply mains from 170V to
260V (for MINI, ECO-160/200/250) and from 320V to 440V (for ECO-315-400V);
2. The unit is adapted to a standard power supply. Due to its high efficiency, the source
provides half the power consumption compared to conventional sources;
3. Convenient work due to good load duration (LD) at rated current, which allows you to weld
continuously with Ø3mm electrodes even with the weakest unit in the range (at an
ambient temperature of 25C);
4. Increased reliability of the unit in dusty production conditions;
5. All unit’s electronics are impregnated with two layers of high-quality varnish, which
ensures the reliability of the product throughout its entire service life;
6. Smooth adjustment of the welding current;
7. Improved arc stability.

PATON ECO DC MMA - 6 -
PARAMETERS MINI ECO-160 ECO-200 ECO-250 ECO-315-400V
Rated supply voltage 50Hz, V
220
230
220
230
220
230
220
230
3x380
3х400
Supply voltage variation limits, V
170 - 260
170 - 260
170 - 260
170 - 260
±15%
Rated current consumption from
the mains phase, A
18.5 20 25 32 15.3
Rated welding current, A
150
160
200
250
315
Maximum operating current, A
180
190
240
300
390
Load duration (LD)
40% / at 150A
100% / at 94A
40% / at 160A
100% / at 101A
40% / at 200A
100% / at 126A
40% / at 250A
100% / at 158A
45% / at 315A
100% / at 210A
Limits of regulation of welding
current, A
20 - 150 20 - 160 25 - 200 32 - 250 50 - 315
“Hot-Start” function
Automatic
“Arc Force” function
Automatic
“Anti-Stick” function
Automatic
No-load voltage, V
up to 80
up to 80
up to 80
up to 80
up to 70
Arc striking voltage, V
110
115
Rated power consumption, kVA
4.0
4.4
5.5
7.0
10.1
Maximum power consumption,
kVA
5.0 5.5 6.9 8.8 12.7
Efficiency, %
90
Cooling
Forced
Operating temperature range
–25 … +45ºС
Overall dimensions (length,
width, height), mm: 200 x 100 x 260 200 x 100 x 260 270 x 110 x 270 270 x 110 x 270 390 x 145 x 335
Weight without accessories, kg
3.3
3.7
4.00
4.35
9.3
Protection rating*
IP21
IP21
IP21
IP21
IP33
* IP21 housing prevents particles with a diameter of more than 5.5 mm from entering the
product, and vertically dripping water does not interfere with the unit operation
* IP33 housing prevents particles with a diameter of more than 2.5 mm from entering the
product, and also provides protection from rain when water falling down vertically or at an angle
of 60º to the vertical line does not interfere with the operation of the unit

- 7 - PATON ECO DC MMA
Recommended length of power welding cables when welding:
Maximum
current
Cable length, m
(one way)
Cross-section
area, sq. mm
Cable brand
not more than 160
А
1 ... 4
8
KG 1x8
2 ... 5
10
KG 1x10
3 ... 8
16
KG 1х16
not more than 200
А
1 ... 4
10
KG 1х10
2 ... 6.5
16
KG 1х16
3 ... 10
25
KG 1х25
not more than
250A
1 ... 6
16
KG 1х16
2 ... 9
25
KG 1х25
3 ... 13 35 KG 1х35
up to 315A
1 ... 9 25 KG 1х25
2 ... 12
35
KG 1х35
3 ... 18
50
KG 1х50
Fig. 1. Control elements and indicators

PATON ECO DC MMA - 8 -
1 – Digital seven-segment display
2 – Regulator of welding current, allowing to smoothly adjust the welding current.
3 – Power supply status indicator:
a) solid green – the unit is ready for operation;
b) off – no power supply or low voltage in the mains;
4 – Unit operation indicator:
a) off (green light for ECO-315-400V) – the unit is in a normal state;
b) red light (yellow light for ECO-315-400V) – overheating;
5 – Mains breaker (for ECO-315-400V) / switch (does not light up, the colour is adopted for
design purposes).
А – Bayonet-type power current socket "+";
B – Bayonet-type power current socket "-".
2. START-UP
CAUTION! Please, read Section 11 "Safety instructions" before starting-up.
2.1 INTENDED USE
The welding unit is intended exclusively for: MMA welding.
Any other use of the unit is inappropriate. The manufacturer bears no liability for
damage caused by using the unit for other purposes.
Proper use implies following the instructions in this operating manual.
2.2 SPACE REQUIREMENTS
The welding unit is protected against penetration of foreign particles with a diameter
of more than 5.5 mm.
The welding unit can be located and operated outdoors. The internal electrical parts of
the unit are protected from direct exposure to moisture.
CAUTION! After finishing welding in hot weather, or intensive welding in any weather,
do not turn off the unit immediately! Wait 5 minutes to let the electronic components to cool
down.
CAUTION! After an operation in the cold season, after switching off and subsequent
cooling of the unit, condensation forms inside – do not switch the unit in less than 3 to 4
hours!!!
Therefore, do not turn off the unit during the cold season if you plan to turn it on in less
than 4 hours.
CAUTION! The unit can be life-threatening after being dropped. Place the unit on a
stable solid surface.
Place the unit so that cooling air can enter and exit freely through the vents on the
front and rear panels. Make sure that no metal dust (e.g. when sanding) is sucked into the
unit directly by the cooling fan.

- 9 - PATON ECO DC MMA
2.3 POWER CONNECTION
The welding machine of series design is rated for:
1. Mains voltage is 220V (-27% + 18%) - for MINI, ECO-160/200/250;
2. Three-phase mains voltage is 3x380V or 3x400V (for ECO-315-400V); three wires are
dedicated for this. Safety rules when working with welding equipment require grounding of
the unit housing. There are two ways to do this: 1) by using the fourth wire in the mains
yellow-green cable (international marking standard); 2) by using a bolted terminal on the
rear wall of the unit (a stricter grounding standard, used in the CIS countries).
Caution! When the unit is connected to a mains voltage higher than 270V (for MINI, ECO-
160/200/250) or 450V (for ECO-315-400V), all manufacturer's warranty obligations
become invalid! The manufacturer's warranty obligations also become invalid in case of
an erroneous connection of the mains phase to the source ground.
The mains connector, the cross-sections of the mains cables, as well as the mains
fuses need to be selected based on the unit technical data.
2.4 CONNECTING THE MAINS PLUG
CAUTION! The mains plug needs to match the supply voltage and current
consumption of the welding unit (see the technical data). According to safety rules,
please, use the sockets with guaranteed grounding!!!
3. MANUAL METAL ARC (MMA) WELDING
- insert the electrode cable into the socket of the source A “+”;
- insert the grounding cable into the socket of the source B “-”;
- connect the grounding cable to the product;
- connect the mains plug to the power supply;
- turn the power switch 5to the “I” position.
Fig. 2. Connection diagram of the MMA unit
CAUTION! After the main switch 3 is switched to the "I" position, the MMA
electrode is energized. Do not touch conductive or grounded objects such as, e.g., the
housing of the welding unit, etc. with the electrode.
ELECTRODE HOLDER
GROUND TERMINAL
WORKPIECE

PATON ECO DC MMA - 10 -
3.1 “HOT-START” FUNCTION
Advantages:
- improved striking even when using poorly ignited electrodes;
- better penetration of the base material during striking, therefore, less lack of penetration;
- prevention of slag inclusions.
What helps to achieve this: for a short time at the moment of arc striking, the
welding current increases by 33% of the set value of the welding current (Fig. 3).
Example: welding with Ø3mm electrode
The value of the welding current set by the regulator is 90A.
The hot start current is 90A + 33% = 120A.
3.2 “ARC FORCE” FUNCTION
Advantages:
- increasing the stability of short-arc welding;
- improvement of the drop of metal transfer into the weld pool;
- improved arc striking;
- reduces the likelihood of electrode sticking.
What helps to achieve this:
when the voltage on the arc drops below the minimum allowable for stable arcing, the
welding current increases by 30% of the set one (Fig. 4).
Fig. 3. “HOT-START” function