Miller Bobcat 200 Air Pak Owner's Manual page 66

Trouble
High air pressure.
Oil in air from compressor.
Engine does not idle with compressor
on.
Air compressor overheats. Display
reads "AC TEMP."
Oil in compressor air cleaner.
Water in compressor oil. Oil appears
milky.
Water in air from compressor.
Compressor case retains pressure after
shutdown.
B. Battery Charge/Jump-start/Crank Assist Troubleshooting
Trouble
No battery charge/jump start/crank as-
sist output.
Charging current turns on and off while
charging battery.
OM-283762 Page 62
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A complete Parts List is available at www.MillerWelds.com
Check air compressor gauge. Adjust compressor air pressure (see Section 7-2).
Check for frozen control lines.
Have factory authorized service agent check inlet valve operation.
Check compressor oil level (see Section 5-5). If oil level is too high, system becomes saturated with oil.
Open line (nothing connected to compressor outlet) will result in oil in air. Do not operate with open air
line.
Change compressor air/oil separator if close to replacement hours (see Section 11-3).
Wrong or mixed oil results in foaming which can cause oil in air. If mixed oil is suspected, replace oil, oil
filter, and air/oil separator.
Have Factory Authorized Service Agent check for plugged oil scavenge line.
Remove auxiliary power or other loads. Multiple loads keep engine at high speed.
Wait 45 seconds after air output stops for engine to idle. Verify case pressure reduces during this time.
Check for air leaks downstream of compressor. Any air leak will cause output pressure to reduce and the
compressor to engage.
When pressure reduces in case, verify clutch disengages 45 seconds after air output stops. If it does
not, check for air leaks.
Check that all covers, panels, and doors are in place during operation.
Check compressor oil level (see Section 5-5). Low oil level causes increased compressor temperature.
Automatic shutdown stops compressor if compressor temperature is too high.
Recirculation or open covers may cause overheating. Be sure all covers, panels, and doors are in place.
Operate in area with proper airflow. Automatic shutdown stops compressor if compressor temperature
is too high.
Check/clean oil cooler.
Verify adequate air flow to compressor. Check for blocked air intake.
Adjust compressor air pressure (see Section 6-4).
Replace compressor oil filter (see Section 11-3).
Wrong oil or mixed oil. Drain oil and replace with factory oil and filter.
Have Factory Authorized Service Agent check temperature sensor.
Have Factory Authorized Service Agent verify compressor inlet valve is operating properly.
Operate air compressor continuously under pressure to allow the compressor to reach operating temper-
ature. Water in oil is often caused by intermittent use in which compressor does not reach temperature.
If oil still appears milky, change oil, oil filter, and air/oil separator.
Some water in air from compressor is normal. Install air line water separator if necessary.
Have Factory Authorized Service Agent check compressor blow down valve.
Be sure battery is connected.
Check polarity.
Be sure Process switch is in 12V or 24V position according to the voltage of the battery being charged.
Be sure Charge/Weld switch is in charge position.
Check battery voltage. Charging may be finished.
Have Factory Authorized Service Agent check battery charge circuitry.
Clean and tighten battery connections, if necessary. Clean battery terminals and posts with baking soda
solution and rinse with clear water.
Check condition of battery.
Remedy
Remedy