Conditioner Control In Heating Mode - Belarus 1822.3 Operator's Manual

ATTENTION: THE AIR CONDITIONER CAN BE SWITCHED ON AND OPERATE
ONLY WITH THE ENGINE ON!
To switch on the conditioner it is required to do the following:
- turn the cut-out switch 2 (figure 2.4.1) clockwise to 180° until a blue scale be-
gins;
- then turn the switch 1 to one of three marked positions (the fan rotor has three
kinds of rotation speed). After 3-5 minutes adjust a required temperature in the cab with
the switch 2;
- it is possible to adjust a mixture of outer air and recirculation air with recirculation
shutters 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
PREVENT THE SYSTEMS OF HEATING AND COOLING FROM SIMULTANEOUS OP-
ERATION!

2.4.2 Conditioner control in heating mode

ATTENTION: REFILLING THE ENGINE COOLING SYSTEM SHALL BE CARRIED
OUT ONLY WITH LOW-FREEZING LIQUID SPECIFIED IN THE SUBSECTION 6.7 "FILL-
ING AND LUBRICATION OF THE TRACTOR WITH FUEL AND LUBRICATION MATERI-
ALS"!
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 70-80°C of cooling
system temperature;
- then open the heater control valve with a handle 2 (figure 2.4.2), to do this turn the
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 radia-
tor must warm up. Herewith the cooling fluid level in the cooling system radiator will de-
crease;
- refill the cooling fluid through the filler of the expansion tank. Refill till the cooling
fluid level in the expansion tank reaches 50...60 mm below the upper edge of the filler;
- to warm up the cab quickly switch on the heater fan and open recirculation shut-
ters;
ATTENTION: WHEN OPERATING IN THE HEATING MODE THE 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 – Installation of heater control valve
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2022.3-0000010 OM