OPERATIONB-7

STITCH KEY

Turns on the Stitch weld timers and displays selec- tions of the stitch ON and OFF times. Pressing the Stitch key a second time returns the screen to the previous display without turning off the stitch timers. Any time the Stitch weld timers are on and the display is in the Auto or Manual mode, the abbreviation STCH will appear in the bottom left corner of the display.

Left arrow keys — Do not function.

Center arrow keys — Increase (up arrow) or decrease (down arrow) Stitch ON time in seconds (0.20 to 2.50s).

Right arrow keys — Increase (up arrow) or decrease (down arrow) Stitch OFF time in seconds (0.20 to 2.50s).

TYPICAL STITCH KEY PRESS SEQUENCE

Auto screen is displayed prior to pressing Stitch key. Stitch key is pressed, Stitch timers are activated and the display changes to Stitch screen. Stitch ON and OFF timers can now be adjusted using the center and right arrow keys. Once the timers have been set, pressing the Stitch key again returns the display to the original Auto screen with the Stitch timer status indicated in the bottom left corner.

TIMERS OFF KEY

Turns off both Spot and Stitch timers and removes their indicating letters from the bottom left corner of the Auto and Manual mode displays.

The six arrow keys do not function with this key.

TYPICAL TIMERS OFF KEY PRESS SEQUENCE

Auto screen is displayed prior to pressing Timers Off key. Timers Off key is pressed, all timers are turned

off, and the display no longer indicates in the bottom left-hand corner that any timers are on. (Timer status is replaced by gauge in the Auto mode.)

GUN SWITCH KEYS

IPM VOLTS KEY

Sets the gun thumbswitch to control IPM or VOLTS. Pushing the gun thumbswitch forward (toward the tip) increases and pulling it back decreases IPM or VOLTS. The underlining cursor always indicates the selection being controlled by the gun thumbswitch. If the cursor is not present, the gun thumbswitch will not be functional which prevents any inadvertent actua- tions. Each time this key is pressed, it causes the cur- sor to go to the next step in the following sequence IPM to VOLTS to no cursor to IPM to VOLTS, etc.

NOTE: In Auto mode, changing IPM will change arc voltage also and can cause a change in metal thick- ness as well.

TYPICAL IPM VOLTS KEY PRESS SEQUENCE

Auto screen is displayed prior to pressing IPM VOLTS key. IPM VOLTS key is pressed, cursor moves from under IPM to under VOLTS. Pressing the IPM VOLTS key again causes the cursor to disappear. Pressing the IPM VOLTS key again causes the cursor to appear under IPM. This sequence continues each time the IPM VOLTS key is pressed.

TOGGLE KEY

IDEALARC SP-255

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Lincoln Electric SP-255 manual OPERATIONB-7, GUN Switch Keys