Atlas Copco XAS96 DdG Manuel D'instructions page 24

XAS96 DdG, DdG IT
3.3.3 F
UNCTION OF GENERATOR
H4
X1.3
X1.2
X1.1
Fig. 3.12 Control panel (generator)
Generator DdG IT 230/400V:
S7 Switch
H4 Lamp (red)
H3 Lamp (green)
X1.1 Socket 400 V/ 16 A
X1.2 Socket 230 V/ 16 A
X1.3 Socket 230 V/ 16 A
Start the unit in accordance with the normal procedure
(see 3.3.1). Let the motor warm up until it reaches operational
temperature. Turn the green switch S7 to position 1.
The normal control system is switched off and the motor speed
increases to reach the maximum.
The green lamp H3 in the switch S7 is activated, showing that the
sockets X1.1, X1.2 and X1.3 are under tension.
The generator can be switched off by turning the green switch S7 to
position 0.
24
D G IT
D
0 1
S7 / H3
X1.3
X1.2
X1.1
Generator DdG IT 230V:
S7 Switch
H4 Lamp (red)
H3 Lamp (green)
X1.1 Socket 230 V/ 16 A
X1.2 Socket 230 V/ 16 A
X1.3 Socket 230 V/ 16 A
K6
40 50 60
30
20
14
1 2 3
Fig. 3.13 Generator control box
Generator DdG IT 230/400V:
Q1 Main circuit breaker 4-pole + shunt trip coil
K6 Insulation monitoring relay
Generator DdG IT 230V:
Q1 Main circuit breaker 3-pole + shunt trip coil
K6 Insulation monitoring relay
Before connecting an electrical device, always check the
data listed on the rating plate.
Fault situations and protective devices:
Ð When the generator is switched on by means of switch S7, the
green lamp H3 is not activated. Open the left machine door and
check that the circuit breakers are up. If the circuit breakers are
down, put them up (switch them on). Circuit breakers in the up
position can be indicative of a serious electrical fault.
Ð When the electrical device is connected, the green lamp H3 is
deactivated. This indicates a fault in the electrical device.
Ð When the red lamp H4 is activated, it means that a serious
insulation fault has occurred. Reset by first switching off the
motor, then restart it.
Ð The insulation monitoring relay K6 must be adjusted to
10 k½. This adjustment may not be changed.
Ð The thermal contact S6 closes when the temperature in the
generator becomes too high.
3.4 D
URING OPERATION
The doors must be closed during operation and may be
opened for short periods only.
Regularly carry out following checks:
1. That regulating valve (RV) is correctly adjusted, i.e. starts
decreasing the engine speed when reaching the preset working
pressure in the receiver.
2. Check the air filter vacuum indicator (VI - Fig. 2.3). If the yellow
piston reaches the red marked service range, replace the filter
element. Reset the indicator by pushing the reset button.
3. On compressors with aftercooler, check that the automatic drain
of the water separator is operative without air leakage.
70
80
Q1
4 5 6 7 8 9 10