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WELDERS ITEM 8201N ÷ 8214N
EDITION: MAY 2008 PAGE 10 OF 32
The welder has been assembled by using components which do not require lubrication. The
insertion of a lubricator in the circuit causes no problems to the welder; nevertheless, pay
attention to the fact that this brings the emission of oil mist in the environment.
3.4 COOLING WATER CONNECTION
For a correct cooling of the welder it is necessary clean water at a maximum temperature of 30°C
at the quantity stated on the paragraph “Technical features”. When connecting the unit to the
water line check for dirt or packing scraps in the hoses and connect the supply to the inlet, and
the drain to the outlet, this to allow that still cool water immediately reaches the parts of the
welder most subject to heating.
Different cooling circuit systems are available: with city supply water, with re-circulating water,
with heat exchanger (air-water) and with refrigerator. If the circuit is with city supply or refrigerator
and you are working in presence of high humidity, we suggest to avoid the use of low
temperature water, as this could produce moisture inside the machine. In presence of hard water
it is necessary to install a water softener at the inlet hose, this to avoid that deposits obstruct or
reduce the water channels in the welder causing damages. If the machine is operated in a re-
circulating water supply, the water softener must be placed on the supply of the tank, an insertion
before the machine generate damages.
3.5 ELECTRICAL INSTALLATION
The welders described in this manual have been designed to be used only for professional
purposes in industrial environments. They must not be installed on public low voltage network
which supplies domestic premises. This can cause electromagnetic interferences.
Installation must be carried out by specialised personnel, aware of all safety rules.
As this unit can be supplied for different power supply versions, before connecting the unit to the
power line, check if the voltage shown on the features plate corresponds to the one of your
power supply.
Consult the “technical features” paragraph to determine the cables section to be used, according
to their length. On this paragraph you find also the values of fuses which must be placed on the
welder supply input. Fuses must be delayed type. Connect machine to earth by using a cable
having the same section of the mains cable. In order to facilitate the maintenance operation, we
recommend you to supply the welder machine by means of a mains disconnecting switch. The
welder has not been designed for different voltages supply. If a voltage change is necessary
consult your supplier for the replacement of required parts and new set ups.
