JESS WELDING inoMIG 350, Operating Instructions Manual

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EN - 32
BA-0014 • 2020-06-05
15 Welding torch cooling/coolant inoMIG 350/400/500
15 Welding torch cooling/coolant
Procedure
Welding torch cooling is based on the function of a recooling system, i.e., the coolant is cooled down to a
temperature close to room temperature by a heat exchanger, using the room air circulated by the fan.
Water-cooled torch
An integrated water cooling system with a low-noise pump cools the torch. The water tank should be almost
full. If water is lost when the torch or intermediate cable assembly is replaced, the water level in the tank
must be checked.
Monitoring water flow
In the event of insufficient cooling water or flow (less than 0.25 l/min), a sensor switches the control system
off and the error message “Err H2o ---” is shown in the display.
Once the cause of the water shortage is eliminated, you can switch the machine off and back on again to
continue working.
Checking water flow
If you press and hold down the “l/min” button, the water pump is activated and the current water flow
volume is immediately displayed in the right-hand display (e.g. 1.15 l/min). If this value is less than
0.25 l/min, the current water flow is insufficient and the pump is automatically switched off after 5 seconds.
Troubleshooting see section 17 Troubleshooting on page EN
- 32.
16 Overheating
If extended use and very hot ambient conditions lead to the machine overheating, it will be switched off and
welding can no longer continue until it has cooled down again. Should this occur, text such as the following
will appear on the control panel’s display:
 t°C - 03 - hot

t°C = hot = temperature too high
17 Troubleshooting
NOTICE
Max. operating pressure: 3.2 bar
NOTICE
ONLY use JPP coolant (order no. 900.020.400)
• Unsuitable coolant may cause damage and result in loss of the manufacturer's warranty.
• Do not add water or other coolant.
• Do not weld without coolant! The tank must always be full.
• The pump must now be allowed to run dry, even for a short time. Vent the pump.
• Harmful to health – keep out of reach of children!
• The SAFETY DATA SHEET can be accessed on www.jess-welding.com
• Frost-resistant to −30°C
DANGER
Risk of injury and device damage when handled by unauthorized persons
Improper repair work and modifications to the product may lead to serious injuries and damage to the
device. The product warranty will be rendered invalid if work is carried out on the product by
unauthorized persons.
Only qualified personnel are permitted to perform work on the device or system.