Thermal Overload Protection; Technical Data Information Guide; Welding Preparation - Forney 190 MP Operating Manual

19. LOCAL / REMOTE SWITCH:
a. Local: when selected all welding parameters have to be adjusted using knobs 7 and 8 on
the front control panel
b. Remote: when selected Left Knob (8) is not active. In STICK Welding, "SMAW" and TIG
Welding, "GTAW" Mode current is adjustable using the foot pedal. In MIG Welding,
GMAW" Mode the wire speed is adjustable using the potentiometer on the Spool Gun
torch.

Thermal Overload Protection

WARNING: If the duty cycle of the welder is exceeded, a thermostat will automatically cut
the power to prevent the machine from overheating. If this should happen do not unplug the
machine while it cools down. The thermostat will automatically reset itself and you can continue
welding. The thermostat is a protective safety device and no harm will normally be done to the
welder unless it is frequently over-loaded, in which case it may eventually become damaged.

Technical Data Information Guide

1. Serial number of the unit
2. Welder model
3. Type of characteristic
4. Min. - Max rated No Load Voltage
5. Type of welding
6. Symbol for the main supply and no. of phases
7. Rated value of the supply voltage
8. Code letter for degree of insulation

Welding Preparation

• Attach the ground clamp to the bare metal to be welded, making sure of good contact;
• Make sure that the wire-roller groove in the roller corresponds to the diameter of the wire
being used.
• Plug the machine into a suitable outlet.
• Completely open the gas cylinder valve. Adjust the gas pressure regulator to the correct
flow rate.
9. Protection degree
10. Power
11. Size of the necessary main fuse
12. Supply current
13. Welding supply and voltage
14. Power Factor
15. Control range (current / voltage)
16. Reference standard
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