Product Manual

USE AS A WELDER
18/11/08 22250-GB
AUTO IDLE
Operation
When the engine is switched on it immediately
reaches a maximum speed of 3720 rpm for ap-
proximately 6/7 seconds for easy start up, after
which it automatically decreases and idles at
2650 rpm. It remains at this speed until current
is drawn when set to weld or auxiliary power.
When set to weld mode the machine reaches
maximum engine speed as soon as there is mi-
nimum contact between the tip of the electrode
and the piece to be welded and also when set to
generation drawing a minimum of 250 – 300 W
The machine returns to minimum 6/7 seconds
later if power is not drawn during welding or
generation.
Checking and adjusting idling speed
- Check idling speed when COLD;
- When the engine is switched on it reaches ma-
ximum speed; after 6/7 seconds it decreases
automatically to idle. Check the speed when
the engine idles;
- The idling speed corresponds to 47-50 Vdc at
the welding sockets or the equivalent at 2650
rpm.
Minimum welding voltage TOO LOW
- From Fig. 1 proceed as follows:
• when the machine idles (engine cold)
• Keep pin A locked (8 mm spanner) and un-
screw nut B (7 mm spanner)
• Again with pin A locked, turn nut C clockwise
(7 mm spanner) 1 - 3 mm: The more it is ex-
tended the more the idle speed increases
• Tighten nut B on pin A and check the idling
speed.
Minimum welding voltage TOO HIGH
- From Fig. 1 proceed as follows:
• When the machine idles (engine cold)
• Keep pin A locked (8 mm spanner) and un-
screw nut B 1-3 mm (7 mm spanner)
• Again with pin A locked, turn nut C anticlockwi-
se (7 mm spanner) until nut B touches pin A
• Tighten nut B against pin A and check that the
idling speed is correct.
Adjusting the maximum engine speed
FIG. 1
FIG. 2
M
34.1
REV.0 - 11/08
Calibration of maximum RPM (Revolutions
Per Minute)
To check that the maximum engine RPM is correct,
simply measure that the welding tension with no-
load (not under load) at the maximum RPM must
be between 69-71V.
Adjustment is made by the screw (A) Fig. 2.; rst,
however, the accelerator lever lock nut must be
loosened, then carry out the adjustment, turning the
screw (A) clockwise to reduce the maximum and
anti-clockwise to increase it. Once the calibration
has been carried out, re-tighten the accelerator
lever lock nut.