Instrument Board - Belarus 922.6 Operator's Manual

2.6 Instrument board

Instrument board 13 (Figure 2.1.1) includes five gauges with five signal lamps as shown
in Figure 2.6.1.
1 – signal lamp of emergency air pressure in the pneumatic system; 2 – gauge to indi-
cate air pressure in the pneumatic system; 3 – pilot lamp of additional accumulator battery
charge (not usable); 4 – voltage gauge; 5 – signal lamp of reserve fuel volume in the tank; 6 –
gauge to indicate fuel volume in the tank; 7 – signal lamp of emergency temperature of engine
coolant; 8 – gauge to indicate temperature of engine coolant; 9 – gauge to indicate oil pressure
in the engine lubrication system; 10 – signal lamp of emergency oil pressure in the engine lubri-
cation system;
2.6.1 The scale of the gauge of oil pressure in the pneumatic system has three zones:
- operating – from 500 to 800 kPa (green color);
- emergency (two) — from 0 to 500 kPa and from 800 to 1000 kPa (red color).
Signal lamp 1 (red color) is built in the gauge scale which lights up when the pressure in the
pneumatic system drops below 500 kPa.
2.6.2 Voltage gauge 4 (Figure 2.6.1) indicates accumulator battery voltage with the en-
gine stopped when the key of starter and instruments switch (Figure 2.2.2) is set in position "I".
With the engine running the voltage gauge indicates voltage on generator terminals.
The states of the power supply system depending on the position of the gauge pointer on
the scale are given in Table 2. 6. 1.
Table 2.6.1 – The states of the power supply system
Zone on the voltage gauge
scale 4 (Figure 2.6.1), color
13,0 – 15,0 V
green
10,0 – 12,0 V
red
12,0 – 13,0 V
yellow
15,0 – 16,0 V
red
white line in the yellow
zone
Figure 2.6.1 – Instrument dashboard
States of power supply system
with the engine running
normal mode of charge
the generator is out of order
No AB charge
(low charging voltage)
AB recharge
-
27
922.6-0000010 OM
with the engine stopped
-
accumulator battery
discharged
AB has a normal charge
-
Rated AB electromotive force
is 12,7 V