Operation Switches - Kemppi 3200 Operating Manual

If the water does not start circulating, see paragraph Operation disturbances: "The water does
NOTE!
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.

2.7.2 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
EN
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.
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