Lincoln Electric AC-1500 manual LOCAtION

A-2 INSTALLATION A-2

LOCAtION

Install the welder in a dry location where there is free circu- lation of air in through the louvers in front and out through the louvers in the back of the case. A location which mini- mizes the amount of smoke and dirt drawn into the machine reduces the chance of dirt accumulation that can block air passages and cause overheating.

INput WIRING

The AC-1500 does not have an input contactor. Therefore, include an external starter or disconnect switch when plan- ning the input circuit.

Remove the right side panel of the AC-1500 and bring the input power lines through the hole in the back of the case. See the table below for reccomended sizing of input leads and overcurrent protection.

ELECTRIC

SHOCK can kill.

WARNING

•Have an electrician install and service this equipment.

•Turn the input power off at

the	fuse box before
working on		equipment.

•Do not touch electrically hot parts.

The frame of the welder must be grounded, A stud marked

with the symbol located on the welder base below the panel is provided for this purpose. See the National Electrical Code for details on proper grounding methods.

Output CONNECtIONs

WIRE FEEDER CONNECtION

Turn the input power to the welder off. Remove the screw and lift the hinged door on the front of the control panel to expose the terminal strips. Connect the leads

Failure to fuse the input lines per the specifications in this manual will constitute customer abuse and void the warranty.

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Have a qualified electrician make the complete input con- nection in accordance with the National Electrical Code, all local codes and the connection diagram located inside the machine.

Be sure the voltage, phase and frequency of the input power is as specified on the welder nameplate.

For most installations, connect the AC-1500 to single phase power or to one phase of a three phase line. Unbalanced line conditions can be easily avoided by properly balancing the AC-1500 with other machinery on the lines.

When installing two or four Scott connected AC-1500 machines for AC-AC tandem arc welding, three phase input power must be used. The terminals for connections to pro- vide an output phase angle less than or greater than the usual 90º phase angle are included on the input panel.

of the wire feeder input control cable to the terminal strips exactly as specified in the appropriate connection diagram. The AC-1500 to NA-4 connection diagrams are included in the NA-4 Operating Manual IM-278. Attach the control cables to the panel at the right of the terminal strip using the clamps provided.

If connecting the AC-1500 to an older NA-4 with the toggle switch type ‘Current Control’ (below code 7532), a K-775 ‘Remote Control’ must be purchased and instal- led in accordance with the connection diagram S-15667 on page 5. The ‘Remote Control’ cord can be lengthened to any length by properly splicing a four conductor cord to the standard 25’ cord before connecting to the AC- 1500 terminal strip.

To connect the AC-1500 to any other wire feeder, write to the factory for instructions giving complete nameplate information for the specific equipment.

When connection to the terminal strips are completed, close the door and replace the screw.

IDEALARC™ AC-1500