Conditioner Control In The Heating Mode - Belarus 2022.6 Operator's Manual

With the help of switch 1 you can change air flow by changing fan speed. Switch 2 al-
lows to change temperature of cold and dry air coming from deflectors 6 (fig. 2.1.1) in the con-
ditioning mode.
ATTENTION: AIR CONDITIONER CAN BE SWITCHED ON AND CAN OPERATE ON-
LY WITH THE ENGINE ON!
To switch on the conditioner, it is required to do the following:
- turn cut-out switch 2 (figure 2.4.1) clockwise to ≈180° until a blue scale begins;
- then turn switch 1 to one of three marked positions (the fan rotor has three kinds of ro-
tation speed). After 3-5 minutes adjust the required temperature in the cab by means of switch
2;
- it is possible to adjust a mixture of outer air and recirculation air with recirculation shut-
ters 7 (figure 2.1.1) if available.
To switch off the conditioner, it is required to turn both switches 1 and 2 (figure 2.4.1)
contraclockwise into "0" position.
ATTENTION: MAKE SURE THE CONDITIONER IS SWITCHED OFF BEFORE
STOPPING THE ENGINE!
ATTENTION: WHEN THE CONDITIONER OPERATES IN THE COOLING MODE
MAKE SURE THAT THE HEATER CONTROL VALVE IS SHUT OFF IN ORDER TO PRE-
VENT THE SYSTEMS OF HEATING AND COOLING FROM SIMULTANEOUS OPERATION!

2.4.2 Conditioner control in the heating mode

ATTENTION: REFILLING OF THE ENGINE COOLING SYSTEM SHALL BE CARRIED
OUT ONLY WITH LOW-FREEZING LIQUID SPECIFIED IN SUBSECTION 5.8 "TRACTOR
FILLING AND LUBRICATION WITH FUEL AND LUBRICATION MATERIALS"!
To set the conditioner into the heating mode, do the following:
- after refilling the cooling system with the cooling fluid, start the engine and let the en-
gine run at medium idle without opening the heater control valve to reach 60-80°C of cooling
system temperature;
- then open the heater control valve with handle 2 (figure 2.4.2), to do this turn handle 2
contraclockwise against the stop;
- increase engine speed and let it run for one-two minutes until the heater radiator is
filled up with the fluid. Make sure the fluid circulates through the heater. The heater radiator
must warm up. In this case the cooling fluid level in the cooling system radiator will decrease;
- refill the cooling fluid into the expansion tank until it is half full;
- to warm up the cab quickly, switch on the heater fan and open recirculation shutters.
ATTENTION: WHEN OPERATING IN THE HEATING MODE, SWITCH 2 (FIGURE
2.4.1) SHALL BE COMPLETELY OFF TO PREVENT THE COOLING SYSTEM AND THE
HEATING SYSTEM FROM SIMULTANEOUS OPERATION!
.
1 – sun visor, 2 – handle of heater control valve; 3 – upper shield unit of button switches.
Figure 2.4.2 – Assembly of heater control valve
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2022.6-0000010 OM