Lincoln Electric IM662 SAE400 - Manual (Page 19)

D-1 MAINTENANCE D-1
ELECTRIC SHOCK can kill.
● Do not touch electrically live parts
such as output terminals or inter-
nal wiring
ENGINE EXHAUST can kill.
● Use in open, well ventilated areas
or vent exhaust outside
MOVING PARTS can injure.
● Do not operate with doors open or
guards off
● Stop engine before servicing
● Keep away from moving parts
● Remove guards only when necessary and
replace when work requiring removal is com-
plete.
● Only qualified personnel should install, use, or
service this equipment.
ROUTINE MAINTENANCE
At the end of each day’s welding, refill the fuel tank to
minimize moisture condensation in the tank. Also, run-
ning out of fuel tends to draw dirt into the fuel system.
Check the engine crankcase oil level.
If the fuel supply runs out while the fuel pump is oper-
ating, air may be entrapped in the fuel distribution sys-
tem. If this happens, bleeding of the fuel system may
be necessary. See the engine instruction manual.
FUEL SYSTEM WATER SEPARATOR MAIN-
TENANCE
If the fuel system on the engine is equipped with a
water separator, the following maintenance procedures
must be followed.
Inspect the glass bowl for any accumulation of water
on a daily basis. If water is present:
1. Insure the fuel shut off valve is in the "open" position.
2. Loosen the drain screw on the bottom of the bowl
one to two turns or until water begins to flow. Do not
remove the screw completely.
3. Drain until the water has visibly drained from the
bowl and only clear fuel starts to flow from the drain
valve.
4. Close the drain screw tightly by hand.
Note: Water and fuel should be drained into a suit-
able container for proper disposal.
ENGINE AIR FILTER
The engine air filter is an oil bath style filter. Inspect the
air filter daily, more often in dirty or dusty conditions.
When necessary, clean the oil cup and replace the oil
in the cup (Fill cup to oil line with 10W - 30 oil).
Never remove the oil cup while the engine is running.
Do not over fill the oil cup.
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PERIODIC MAINTENANCE
1. Blow out the welder and controls with an air hose at least
once every two months. In particularly dirty locations, this
cleaning may be necessary once a week. Use low pres-
sure air to avoid driving dirt into the insulation.
2. The current control reactor brushes are self-lubricating
and should not be greased. Keep the contacts clean. This
control should be moved from maximum to minimum daily
to prevent the controls from sticking.
3. See the engine Instruction Manual for periodic engine
maintenance information. Change the crankcase oil at
regular intervals using the proper grade of oil as recom-
mended in the engine operating manual. Change the oil
filter in accordance with the instructions in the engine
operating manual. When the oil filter is changed add one
quart of oil to the crankcase to replace the oil held in the
filter during operation.
4. Belts tend to loosen after the first 30 or 40 hours of oper-
ation. Check the cooling fan belt and tighten if necessary.
DO NOT OVER TIGHTEN.
BEARING MAINTENANCE
This welder is equipped with a double-shielded ball bear-
ing having sufficient grease to last indefinitely under nor-
mal service. Where the welder is used constantly or in
excessively dirty locations, it may be necessary to add
one-half ounce of grease per year. A pad of grease one
inch wide, one inch long and one inch high weighs
approximately one-half ounce. Over greasing is far worse
than insufficient greasing.
When greasing the bearings, keep all dirt out of the area.
Wipe the fittings completely clean and use clean equip-
ment. More bearing failures are caused by dirt introduced
during greasing than from insufficient grease.
SAE400
WARNING
CAUTION