Problem Solving - Atlas Copco XAS 127 Kd Instruction Manual

Problem solving

It is assumed that the engine is in good condition and
that there is adequate fuel flow to the filter and
injection equipment.
An electrical fault must be traced by an
electrician.
Problem
1. Starter motor does not crank engine
after switching startbutton (S) to
" ".
2. Starter motor cranks engine when
switching start button (S) to "
engine does not fire.
3. Engine fires, but engine stops when
releasing start button (S).
4. Hourmeter (P1) does not count
running time.
5. Engine is running, but shuts down
immediately after start button (S) has
been released.
6. Compressor is loaded automatically to
full capacity after starting.
aerocompressors.ru
Make sure that the wires are not damaged and that
they are clamped tight to their terminals.
Possible faults
a. Low battery output.
a. Low battery output.
", but
a. Alternator drive belt broken or slipping.
b. Alternator/regulator defective.
a. Hourmeter (P1) defective.
a. Start button (S) released too soon.
b. Insufficient engine oil pressure.
c. Fuel tank contains insufficient fuel.
a. Air intake throttle valve stuck in opened position.
b. Air leaks in regulating system.
Corrective actions
a. Check electrolyte level and charge battery. If no cells are
shorted and battery is discharged, trace cause and
correct.
a. See corrective action 1.
a. Check and correct if necessary.
b. Have assembly repaired.
a. Replace.
a. Release button after engine oil pressure has built up
above the minimum allowed level.
b. Stop at once, consult the engine instruction manual.
c. Fill fuel tank.
a. Check and, if necessary consult Atlas Copco.
b. Check hoses and their fittings. Stop leaks; replace
leaking hoses.
- 59 -