9 | P a g e
PATON
®
PSI PRO 315 A 400 V DC MIG/MAG TIG/MMA
2.1. PROPER USE
The welding unit is designed for manual covered-electrode arc welding, argon arc welding, and gas-
shielded semiautomatic arc welding. Any other use of the welding unit is considered as improper. The
manufacturer of the welding unit is not responsible for damages caused by any improper use of the
unit.
The use of the welding unit is proper if all the requirements of this Operation Manual are satisfied.
ATTENTION!
Do not use the welding unit to unfreeze pipes.
2.2. REQUIREMENTS FOR INSTALLATION
The welding unit is protected against ingress of foreign particles more than 2.5 mm in size.
The welding unit is allowed for outdoor operation. The internal electrical and electronic elements of
the welding unit are protected against moisture but are not protected against atmospheric condensate
drops.
ATTENTION!
After completing welding works in hot weather, or
completing intensive welding works in any weather, switch off the welding
unit only after at least 5 minutes of time required for the electronic elements of
the unit to be cooled.
ATTENTION!
When operating the welding unit in cold season, after the unit
was switched off and cooled, condensate can be formed inside of the unit, so
switch on the welding unit only 3 … 4 hours after the switching off.
For this reason, do not switch off the welding unit if it is anticipated that the
unit is to be switched on not later than 4 hours after the switching off.
Install the welding unit so as not to block or cover the ventilation slots on the front and rear panels of
the unit. Prevent ingress of metallic particles (for example, when grinding the weld) sucked into the
welding unit by the unit ventilator.
ATTENTION!
After fall from a height, the welding unit might be a source
of electrical shock. Install the unit on a firm stable surface.
2.3. CONNECTION TO A POWER SUPPLY SYSTEM
The commercial welding unit is rated for an input power supply voltage of 3x400 V (±15%)
ATTENTION!
If the input power supply voltage of the welding unit exceeds
450 V
, the warranty of the manufacturer of the welding unit will be invalid.
Such a condition is possible at large unbalance of phase voltages in the
standard power supply system or if the welding unit is connected to the power
supply system improperly.