Gastec 220 MMA, Instructions For Use Manual

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8 | en
Technical data 220 MMA 270 MMA 320 MMA
supply voltage 50/60 hz 3x 400 v +10 % -20 % 3x 400 v +10 % -20 % 3x 400 v +10 % -20 %
usable current mma 200 a/100 % 250 a/80 % 300 a/40 %
usable current mma - 220 a/100 % 220 a/100 %
usable current tiG 200 a/100 % 250 a/80 % 300 a/40 %
usable current tiG - 220 a/100 % 220 a/100 %
adjustable current 200 a 250 a 300 a
maximum current 300 a 330 a 380 a
slow protection 16 a 16 a 25 a
adjustment field mma 5 a - 200 a 5 a - 250 a 5 a - 300 a
adjustment field tiG 5 a - 200 a 5 a - 250 a 5 a - 300 a
secondary voltage 65 v 65 v 65 v
input at no load ≤ 50 W ≤ 50 W ≤ 50 W
efficiency max. power ≥ 80 % ≥ 80 % ≥ 80 %
dimensions of electrodes 1.5…5.0 mm 1.5…5.0 mm 1.5…5.0 mm
diameters lxWxh 520x190x428 mm 520x190x428 mm 520x190x428 mm
Weight 17.5 kg 17.5 kg 17.5 kg
protection class iP23s iP23s iP23s
protection level i i i
Contents
ENGLISH
introduction ........................................................................................ 8
Technical daTa ..................................................................................... 8
insTallaTion ........................................................................................... 8
mma meThod ......................................................................................... 9
Tig meThod .......................................................................................... 11
problems solvinG ............................................................................. 13
production plate .............................................................................. 27
electrical diaGram .......................................................................... 28
list of spare parts ............................................................................. 29
dust filter ........................................................................................... 29
WarrantY certificate ...................................................................... 31
Introduction
thank you for purchasing one for our products.
Before using the equipment you should carefully read the instructions included
in this manual.
It is also necessary to study all safety regulations, which are included in the atta -
ched document General regulations.
in order to get the best performance from the system and ensure that its parts last
as long as possible, you must strictly follow the usage instructions and the main-
tenance regulations included in this manual. in the interest of customers, you are
recommended to have maintenance and, where necessary, repairs carried out by
the workshops of our service organisation, since they have suitable equipment
and specially trained personnel available. all our machinery and systems are sub-
ject to continual development. We must therefore reserve the right to modify
their construction and properties.
Description
new portable welding machines 220/270/320 mma are designed as small and
light high performance digital three-phase inverters. new generation digital cont-
rols ensure not only optimal setting of the welding characteristics, but its dynamic
adaptation during the welding process as well. this way a substantially higher
quality weld joint and simplification of welding process are achieved. significant
benefits are new functions, which help to keep the welding arc in an optimal wor-
king area. due to this arc control technology excellent results may be achieved
even by less experienced welders.
digital and progressive hardware design enabled significant reduction in weight,
dimensions and subsequently also in price of the new tiG inverters. the perfor-
mance part itself is overdesigned to ensure reliability, high performance and high
load capacity.
WarninG: if machines work in a dusty environment, they need to be equipped
with a dust filter. filter prevents the machine from being contaminated with im-
purities, thus extending the interval of cleaning its internal parts.
Warranty cannot be accepted if the machine is damaged by excessive dustiness
while the filter is not properly mounted.
Installation
1 - output clamp (+)
2 - output clamp (-)
3 - remote control connector
4 - control panel
5 - main switch
6 - supply cable inlet
Connection of the machine to electrical supply
the 220, 270, 320 mma machines comply with safety class i requirements. this
means that all metal parts, which are accessible without the necessity to take
off the cover, are connected to protective grounding of the electrical supply. the
machine can be connected to power supply only by a cable with a socket equi-
pped with a protective ground contact. always turn the machine on and off with
the main switch! do not use for turning off the terminating unit! the necessary
protection is listed in the chapter “technical data”.
Welding cables connections
use only welding torch and welding cables with sufficient cross-section - see the
“technical data” chapter. the welding cables should be as short as possible, close
to each other and placed at the floor level or near it.
Polarity choice in the MMA welding method
insert connectors and tighten them by turning in the clockwise direction.
You can change the polarity by switching the welding cables at the output co-
nnectors (+) or (-). polarity is determined by the electrode’s manufacturer or the
method being used.