Atlas Copco QAS108 Pd(S) Mk II Manual De Instrucciones página 7

Generator gauges
P1 .....Ammeter line L1
Indicates the outgoing current in the first phase (L1).
P2 .....Ammeter line L2
Indicates the outgoing current in the second phase (L2).
P3 .....Ammeter line L3
Indicates the outgoing current in the third phase (L3).
P4 .....Voltmeter
Indicates the voltage selected by means of voltage selector
switch S4.
P5 .....Frequency / RPM meter
Indicates the frequency of the supply voltage and the speed of
the engine.
S4 .....Voltmeter selector switch
Allows to measure the voltage between each of the phases
and between each phase and the neutral. It also allows to
switch off the voltmeter.
Engine controls and lamps
L1
L2
L3
L4
Hz >
L5
L6
L7
L8
ST .....Starter switch
The starter switch is a three-position switch.
O : the voltage supply from the battery is switched off.
I : the electrical system of the engine, except the starting
circuit is energized.
: the starter motor is energized. As soon as the engine
fires, the switch can be released. The switch automatically
returns to position I.
After approximately 20 seconds in position
ting, the control system will automatically shut down (battery
saving purpose) indicating a low oil pressure failure. In this
case, a reset of the control system by putting the switch in
!
position O is necessary.
F4......Fuse
The fuse activates when the current from the battery to the
engine control circuit exceeds its setting. The fuse can be
switched on and off by pushing the button.
L1......Electrical system indicator
Lights up when the electrical system of the engine is
energized.
L2......Engine preheating system indicator
Lights up when the glow plugs in the engine, used to facilitate
starting, are warming up. Extinguishes after approximately 10
seconds. Bypassing of the preheattime is allowed e.g. when
starting a hot engine, but the preheat system remains active.
L3......Alternator charging indicator
Goes out after starting, indicating that the alternator is char-
ging. A failing alternator however will not shut the engine
down.
L4......AC shutdown indicator
Lights up when no AC input (<160 V line-to-neutral) is present.
L5......Overspeed shutdown indicator
Lights up when the engine's speed has exceeded 115 % of
the nominal speed. The nominal speed is determined by
means of the dipswitch at the back of the control module
(50 Hz or 60 Hz).
L6......Engine coolant temperature fault indicator
Lights up when the high engine coolant temperature was the
cause of shutdown.
L7......Engine oil pressure fault indicator
Lights up when the low engine oil pressure was the cause of
shutdown.
L8......Spare shutdown indicator
Can be used to wire an extra shutdown, e.g. for low fuel level
in case a switch is incorporated in the fuel tank.
ST
F4
without star-
I
NSTRUCTION MANUAL
7