Belarus 921.6 Operator's Manual page 25

Only the dealer is allowed to drain the cooling fluid from the heating system, since
during the cooling fluid draining process it is necessary to dismount/mount some elements
of the SCR system.
ATTENTION: WHEN THE HEATER-FAN OPERATES IN THE HEATING MODE,
THE CAB IS SIMULTANEOUSLY VENTILATED. TO OPERATE THE HEATER-FAN ON-
LY IN THE VENTILATION MODE (DURING SUMMER TIME), THE HEATER VALVE
SHALL BE CLOSED!
Your tractor can be equipped only with the fan instead of the cab heater-fan.
1 – deflectors; 2 – recirculation flaps; 3 – cab fan switch.
To ventilate the cab, proceed as follows:
- activate the fan using the switch 3 and adjust airflow in required direction by de-
flectors 1;
- by opening the recirculation flaps 2, it is possible to regulate quantity of fresh air,
which is fed into the cab.
Your tractor can be equipped with the air-conditioning unit instead of the heater-fan
(fan). For the air-conditioner unit operation rules see subsection2.5 "Air-conditioning unit con-
trol".
ATTENTION: THE ENGINE COOLING SYSTEM SHALL BE FILLED ONLY WITH
THE LOW-FREEZING LIQUID, WHICH IS STATED IN SUBSECTION 5.8 "THE TRAC-
TOR FILLING AND LUBRICATION WITH THE FUEL AND LUBRICANTS"!
Figure 2.4.2 – Cab fan controls
25
921.6-0000010 OM