Retest After Repair - Lincoln Electric Tomahawk 1500 Service Manual

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Operator's manual (64 pages)

Table Of Contents

Table of Contents

LINCOLN ELECTRIC

Should a machine under test be rejected for any reason requiring the removal of any mechanical part that

could affect the machine's electrical characteristics, or if any electrical components are repaired or

replaced, the machine must be retested.

INPUT VOLTS / HERTZ

230/3/60HZ ±10%

OUTPUT CURRENT RANGE

MAXIMUM OPEN CIRCUIT RANGE

PILOT CURRENT

1. Connect the machine to 208/230VAC three phase input power and an air supply (80psi

2. Turn on the machine and verify the following:

• The fan is functional.

• The green power LED is illuminated on the front nameplate.

Test the pressure switch in the following manner:

• Turn the output control knob to the purge area until the air starts flowing from torch.

NOTE: If left in Purge, Purge will shut off after five minutes.

Using the regulator on the machine, slowly lower the air pressure and verify that the output red LED

turns on blinking at approximately 45 to 48 psi. ≈ (.31MPa to .33MPa).

With the output red LED blinking on, move from Purge on dial (RED) then pull the trigger on the

torch. Verify that a pilot arc does NOT occur. Release the trigger.

While in Purge mode increase the regulator back to the proper air pressure for cutting levels, 80 psi

(.55MPa).

Move dial out of Purge area.

Test the Purge safety function by dialing into Purge region and get air flowing from torch and then

pull the trigger on the torch. Verify that a pilot arc does NOT occur. Release the trigger and move

from Purge on dial to the red area to turn off air flow.

5. With no air flowing (postflow), pull the trigger on the torch. Verify that the air flows and the pilot

arc is initiated. While continuing to hold the trigger, verify that the pilot arc remains lit for 4 to 6

seconds then turns off automatically. Release the trigger and verify that the air continues to flow

for approximately 20 seconds (postflow).

6. Unscrew the shield cup from the torch and verify that the yellow parts-in-place LED illuminates.

When the torch trigger is pulled the pilot arc should not occur. Re-tighten the shield cup on the

torch and verify that the yellow LED blinks for about five seconds and then goes out. After the

yellow LED goes out pull the torch trigger and verify that a pilot arc does occur. NOTE: There may

be a delay in re-strike during the post flow time.

Test cut with Tomahawk 1500 at its maximum recommended cut thickness with 1.25" steel max.

Turn current dial to maximum.

8. Turn the machine off. Test complete.