ESAB LHI 825, Instruction Manual And Spare Parts List

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4.5 Welding circuit
To guarantee a perfect functioning of the LHI RECTIFIER use a work clamp copper cable,
isolated and with the smallest length possible and compatible with its applications considered, in
a well kept state and firmly fixed to its terminals, also make sure that the connections in the piece
to be weld or in the working station and in the “Negative” terminal of the set are well fixed.
Any total length (which should be the smallets possible) and any welding current used, the work
clamp cable part should correspond to the maximum current of the LHI RECTIFIER used to
supply the duty cycle of 60%.
The thermal welding circuit causes a drop in the voltage which added to the internal natural drop
in the Rectifier itself, reducing the voltage arc and the maximum current available making the arc
unstable.
5 OPERATION
5.1 Overview
General safety regulations for the handling of the equipment can be found in section 1. Read
them carefully before you start using the equipment!
ATTENTION!
The definition of the process and its consumable welding procedure (wire, gas) as
well as the results of the operation and application of same are the responsibility of
the user.
ATTENTION!
Do not turn off the power during welding (with charge).
5.2 Controls
1) ON/OFF switch: Allows the operator to turn the machine on and off.
2) Negative outlet terminal: to connect the work clamp.
3) Positive outlet terminal: To connect the electrode holder.
4) Potentiometer: Sets the welding current .
5) Local remote switch: selects the comand through the panel potentiometer on the machine or
through the remote control.
6) Socket: to connect the remote control.
7) Digital instrument: maintain the voltage and current values after the welding is over (optional).
8) Temperature pilot lamp: When the lamp shows that the equipment is overheated. The
welding is stopped and the cooler continues to work. At reaching the normal working
temperature the lamp turns off and the welding can be re-started.
9) Input cable
6
7
8
4
5
1
2
3
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