Red-D-Arc D502K 5+4, Technical Manual

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TM-4412 Page 26 D502K 5+4
7-5. Adjusting Engine Speed
803 123-A
Y
Stop engine and let cool.
Engine speed is factory set and
should not require adjustment. Af-
ter tuning engine, check engine no
load speed with a tachometer or fre-
quency meter (see table for no load
speeds). If necessary, adjust speed
as follows:
Start engine and run until warm.
Turn Process/Contactor Control
switch to Stick – Electrode Hot
position.
1 Engine Speed Adjustment
Screw
2 Locking Nut
Loosen nut. Turn screw until engine
runs at weld/power speed. Tighten
nut.
.
Do not set engine speed higher
than specified.
3 Engine Shutdown Lever
Use lever to stop engine if Engine
Shutdown switch does not work.
Y
Stop engine.
Close door.
1
2
1850 rpm Max.
(61.6 Hz)
Tools Needed:
3