Lincoln Electric SVM153-A service manual Engine Operation, Starting the Engine, BREAK-IN Period

B-8 B-8

OPERATION

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ENGINE OPERATION

STARTING THE ENGINE

1.Open the engine compartment door and check that the fuel shutoff valve located to the left of the fuel fil- ter housing is in the open position (lever to be in line with the hose).

2.Check for proper oil level on the oil dipstick. Close engine compartment door.

3.Remove all plugs connected to the AC power recep- tacles.

4.Set IDLER switch to “AUTO”.

5.Set the RUN/STOP switch to RUN. Observe that all engine protection lights momentarily turn on. Some lights may turn off before starting. Check the fuel gauge (K1639-2 only) to make sure that there is an adequate fuel level.

6.Press and hold the engine START button for a min- imum of two seconds.

7.Release the engine START button when the engine starts.

8.Check that the indicator lights are off. If the LOW FUEL light is on (K1639-2 only), the engine will shut down 30 minutes after starting. If any other indica- tor light is on after starting, the engine will shut down in a few seconds. Investigate any indicated problem.

9.Allow the engine to warm up at low idle speed for several minutes before applying a load and/or switching to high idle. Allow a longer warm-up time in cold weather.

COLD WEATHER STARTING

With a fully charged battery and the proper weight oil, the engine should start satisfactorily even down to about 0°F. If the engine must be frequently started below 10°F, it may be desirable to install the optional ether starter kit (K825-1). Installation and operating instructions are included in the kit.

BREAK-IN PERIOD

The engine used to supply power for your welder is a heavy duty, industrial engine. It is designed and built for rugged use. It is very normal for any engine to use small quantities of oil until the break-in is accom- plished. Check the oil level twice a day during the break-in period (about 200 running hours).

CAUTION

During break-in, subject the Commander 500 to heavy loads. Avoid long periods running at idle. Before stop- ping the engine, remove all loads and allow the engine to cool several minutes.

The heavy loading of the engine during break-in, with- in the rating of the machine, is recommended to prop- erly seat the piston rings and prevent wetstacking. Wetstacking is an accumulation of unburned fuel and/or lubricant in the form of a set, black, tar-like sub- stance in the exhaust pipe. The rings are seated and the break-in period is complete when there are no longer any signs of wetstacking, which should occur within the first 50 to 100 hours of operation.

CAUTION

Using your welder at low amperages with long idle run- ning periods during the break-in period may result in a glaze forming on the engine cylinder walls and the rings not seating properly. No amount of loading will properly seat the pistons rings after they are glazed over.

TYPICAL FUEL CONSUMPTION

Refer to Table B.2 for typical fuel consumption of the Commander 500 engine for various operating scenarios.

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STOPPING THE ENGINE

1.Switch the RUN/STOP switch to STOP. This turns off the voltage supplied to the shutdown solenoid. A backup shutdown can be accomplished by shutting off the fuel valve located on the fuel line.

COMMANDER 500