Operation Switches - Kemppi KEMPOWELD 3200 Operation Instructions Manual

The cooling unit´s tank is filled with 40 % antifreeze according to British Standard BS3151. If the circumstances
do not require frost resistance, you can use a more dilute mixture, or some other mixture, of which you have good
experriences.
Tank volume is ca. 3 litres, volume of gun and interconnection cable is 0.3-1.5 litres. Filling of hoses takes 5 s-
3 min time. Check the return flow to the tank. Before filling check that tank, cooling water, pouring tank etc. are
clean, and that there is no metal powder, waste etc.
If the water does not start circulating, see paragraph Operation disturbances: "The water does not
circulate... etc.
Do not let any waste and dirt into the water circulation! Check filling volume before starting to weld!
Use the cooling liquid according to recommendations, or the one you know as good beforehand. Watch
over liquid material´s quality and possible sediments in hoses of the gun.
Do not swallow cooling liquid. If somebody has swallowed the liquid, take him immediately to medical
care. Avoid contact with skin and eyes, wash the liquid from your skin with clean water.

2.6.2. Operation switches

In zero (O) position of the power source´s main switch also all operations of the cooling unit are stopped.
Cooling unit´s main switch O / I
The electric supply for the pump motor is switched on by main switch key O / I, where the pilot lamp indicates
the standby state I. In zero (O) position of the main switch the pump motor cannot get started, but the switches
and pilot lamps are operating.
Fuse (F2)
The fuse on the front wall of the cooling unit is short-circuit protection. Use the fuse size and type according to
markings. If the fuse is blowing again, send the unit to service.
Selecting switch for gun's cooling mode (Sw1)
The Kempoweld equipment are suitable to be used with both air- and water-cooled guns. Select cooling mode and
correct use and protection functions with switch on the cooling unit´s panel.
If your choice is GAS, but you are using water-cooled gun, no protection is operating. The pilot lamp is illuminated
in position I of the cooling unit´s main switch. However, the control does not start the pump.
The wrong choice will destroy the gun in short time!
If your choice is (water), but you are using air-cooled gun, the pump gets started by pressing on the trigger, if
the cooling unit´s main switch is in position I.
Test switch (Sw5)
By TEST switch on the panel of the cooling unit you can circulate water without starting welding. It is used for
filling the gun and interconnection cable with cooling water before starting welding. By disturbance situations you
can always test the water circulation. Always check entry of return water into the tank before welding!
Pilot lamps
Pilot lamp for overheating (Hw4)
If the cooling water in the tank is overheating, the thermal protection will stop the power source. Operation of the
cooling unit is continued for ca. 5 - 7 min automatically. The pilot lamp will switch off after the water in the tank
has cooled down, after which the welding will start from the gun triggering.
Pilot lamp for lacking liquid pressure (Hw3)
If the pump does not step up sufficient supply pressure, e.g. when the water is running out or by disturbances in
the pump, the whole equipment will stop after ca. 5 s and the red pilot lamp illuminates. Check the equipment like
by the installation. See paragraph for OPERATION DISTURBANCES.
Operating control
The water circulation gets automatically started, when you are pressing on the gun trigger. The post-circulation
of water will continue for ca. 5 - 7 min. after the weld end. The time is always counted from the latest trigger
release.
© KEMPPI OY KEMPOWELD 3200, 3200W / 0543 – 9