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Alternator precautions
1. Never reverse the polarity of the battery or the
alternator.
2. Never break any alternator or battery connections
while the engine is running.
3. When recharging the battery, disconnect it from
the alternator. Before using booster cables to start
the engine, be sure of the polarity and connect the
batteries correctly.
4. Never operate the engine without the main or
voltage sensing cables connected in the circuit.
14.Air and oil mist expelles from air
filters immediately after stopping.
a. Unloader valve jammed.
b. Wrong oil type (without foam-retarding additives).
a. Check and, if necessary consult Atlas Copco.
b. Consult Atlas Copco.
15.Engine overheating. a. Insufficient engine cooling.
b. Engine oil cooler clogged externally.
a. Relocate compressor.
b. Clean engine oil cooler. Refer to section Cleaning
coolers.
16.Compressor overheating. a. Insufficient compressor cooling.
b. Oil cooler clogged externally.
c. Oil level too low.
a. Locate compressor away from walls; when banked with
other compressors, leave space between them.
b. Clean oil cooler. Refer to section Cleaning coolers.
c. Check oil level. Top up with recommended oil.
17.After working for some time, the unit
stops for no apparent reason.
a. Air in fuel system, or insufficient fuel supply. a. Check filters and hoses for leaks, dirt and bends.
Problem Possible faults Corrective actions
DD6.book Page 62 Monday, November 10, 2014 11:25 AM
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