Maintenance, Caution warning – Lincoln Electric CLASSIC SVM194-A Manuel d'utilisation
Page 69
MAINTENANCE
D3.3
D3.3
CLASSIC® 300D & 300G
Replace brushes when they wear within 1/4”(3.5mm)
of the pigtail. A complete set of replacement brushes
should be kept on hand. Lincoln brushes have a
curved face to fit the commutator. Have an experi-
enced maintenance man seat these brushes by lightly
stoning the commutator as the armature rotates at full
speed until contact is made across the full face of the
brushes. After stoning, blow out the dust with low pres-
sure air.
To seat slip ring brushes, position the brushes in place.
Then slide one end of a piece of fine sandpaper
between slip rings and brushes with the coarse side
against the brushes. With slight additional finger pres-
sure on top of the brushes, pull the sandpaper around
the circumference of the rings - in direction of rotation
only - until brushes seat properly. In addition, stone slip
ring with a fine stone. Brushes must be seated 100%.
Arcing or excessive exciter brush wear indicates a pos-
sible misaligned shaft. Have an authorized Field
Service Shop check and realign the shaft.
IDLER MAINTENANCE
Before doing electrical work, disconnect the bat-
tery.
------------------------------------------------------------------------
When installing a new battery or using a jumper battery
to start the engine, be sure the battery polarity is con-
nected properly. The correct polarity is negative
ground. Damage to the engine alternator and the
Engine Control Unit can result from incorrect connec-
tion.
1. Proper operation of the idler requires good ground-
ing of the Engine Control Unit, current sensing
printed circuit board and battery.
2. If desired, the welder can be used without automat-
ic idling by setting the “Idler” switch to the “High”
position.
NAMEPLATES
Whenever routine maintenance is performed on this
machine - or at least yearly - inspect all nameplates
and labels for legibility. Replace those which are no
longer clear. Refer to the parts list for the replacement
item number.
PURGING AIR FROM FUEL SYSTEM
(KUBOTA V2203M ENGINE)
Keep fuel clear of open flames or arcs, allow
engine to cool before working on the fuel system.
Wipe up any spilled fuel and do not start engine
until fumes clear.
------------------------------------------------------------------------
If the engine is running rough and you suspect air has
been trapped in the fuel system, (e.g. the engine was
allowed to run out of fuel) perform the following steps
using qualified personnel:
1. Fully open the air bleeding valve by turning it
counter clockwise, it is located on top of the fuel
injection pump next to the oil filler. (see figure D3.3)
FIGURE D3.3
2. Turn the engine by pressing the start button until
the engine runs smoothly (this should take approx-
imately 10 seconds).
3. Fully close the air bleeding valve by turning it clock-
wise.
Contact your Kubota Engine repair facility if problems
persist.
CAUTION
WARNING
Air Bleeding
Valve