Tweco ArcMaster 401MST - Manual (Page 31)

ARCMASTER 401MST POWER SOURCE
Manual 0-5287 3-1 INSTALLATION, OPERATION AND SETUP
SECTION 3:
INSTALLATION, OPERATION AND SETUP
exceed the stated conditions. For further information
please refer to EN 60529.
H. Precautions must be taken against the power source
toppling over. The power source must be located on
a suitable horizontal surface in the upright position
when in use.
WARNING
This equipment should be electrically
connected by a qualified electrician.
3.03 Ventilation
!
WARNING
Since the inhalation of welding fumes can
be harmful, ensure that the welding area is
effectively ventilated.
3.04 Mains Supply Voltage
Requirements
The Mains supply voltage should be within ± 15% of the
rated mains supply voltage. Too low a voltage may cause
poor welding performance. Too high a supply voltage
will cause components to overheat and possibly fail.
The Welding Power Source must be:
• Correctly installed, if necessary, by a qualified
electrician.
• Correctly earthed (electrically) in accordance with
local regulations.
• Connected to the correct size power point and fuse
as per the Specifications on page 2-4 (2-6).
!
WARNING
Any electrical work must be carried out by a
qualified Electrical Tradesperson.
3.01 Environment
These units are designed for use in environments with
increased hazard of electric shock as outlined in EN
60974-1.
A. Examples of environments with increased hazard of
electric shock are:
1. In locations in which freedom of movement
is restricted, so that the operator is forced to
perform the work in a cramped (kneeling, sitting
or lying) position with physical contact with
conductive parts.
2. In locations which are fully or partially limited
by conductive elements, and in which there is
a high risk of unavoidable or accidental contact
by the operator.
3. In wet or damp hot locations where humidity
or perspiration considerable reduces the skin
resistance of the human body and the insulation
properties of accessories.
B. Environments with increased hazard of electric shock
do not include places where electrically conductive
parts in the near vicinity of the operator, which can
cause increased hazard, have been insulated.
3.02 Location
Be sure to locate the welder according to the following
guidelines:
A. In areas, free from moisture and dust.
B. Ambient temperature between 32 to 104°F.
C. In areas, free from oil, steam and corrosive gases.
D. In areas, not subjected to abnormal vibration or
shock.
E. In areas, not exposed to direct sunlight or rain.
F. Place at a distance of 300mm or more from walls or
similar that could restrict natural air flow for cooling.
G. The enclosure design of this power source meets
the requirements of IP23S as outlined in EN 60529.
This provides adequate protection against solid objects
(greater than 12mm), and direct protection from vertical
drops. Under no circumstances should the unit be
operated or connected in a micro environment that will