I
NSTRUCTION
M
ANUAL
19
Fault situations and protective devices:
–
The starter motor is protected against prolonged starting or
against attempts to start when the group is already
running.
–
A fault which occurs with the engine, either: oil pressure
(too low) or alternator voltage (too low) will always and
immediately cause the engine to cut out and the control
lamp (H6) will light up. By doing some simple checks, it
can be determined what it was that caused the engine to
fail: low oil level, clogged-up cooler, slack alternator belt
tension or broken belt .
–
When the outlet temperature of the element becomes too
high, a thermocontact will also switch off the group
immediately. Alarm lamp (H6) will go on.
Both control lamps will remain on until the group has been
restarted or the contact is turned off; also when, due to
cooling off, the thermocontact has closed again.
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
The air outlet temperature (TG- Fig. 3.6) of the compressor
element.
3
Check the air filter vacuum indicator(s) (VI- Fig. 2.3). If the
yellow piston reaches the red marked service range,
service or replace the filter element. Reset the indicator by
pushing the reset button.
4
On compressors with aftercooler, check that the automatic
drain of the water separator is operative without air
leakage.
Fig. 3.6
Air outlet temperature gauge (TG)
(View with opened righthand door)
60
50
40
20
30
10
0
1/2
1/1
°C
70
90
110
0
2
4
6
8
16
14
12
10
bar
x 100 kPa
VDO
TG
Summary of Contents for XAS 175 Dd
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