Atlas Copco QAS 500 - Page 108

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A1 Control module
(configure in UNIT-type 2)
B7 Fuel level sensor
F10 Fuse
F11 Fuse 15A DC (O)
G1 Battery 24V
H0 Panel light
K7 Aux.relay for Y7 (O)
K8 Engine control relay
M1 Starter motor
M2 Eberspacher fuel pump (O)
N1 Eberspacher timer (O)
N2 Eberspacher (O)
P1-3 A-meters
P4 V-meter
R3 Resistor 120 ohm
R10 Resistor 470 ohm 7W (O)
S1 Battery switch
S2a Emergency stop button
(S2b: see Power Circuit)
S2c Emergency stop (O)
S3 Water in fuel switch (O)
S4 Voltmeter change-over switch
S11d Selector switch 50/60Hz
(S11a,b see Power Circuit)
S20 ON/OFF switch
V7 Free-wheeling diode Y7 (O)
V8 Free-wheeling Diode K8
X9 Terminal strip (See Power Circuit)
X10 15-Pole connector
X11 Terminal strip (See Power Circuit)
X25 Terminal strip
Y7 Air inlet shutdown valve (O)
(O) Optional equipment