BELARUS-920.4/952.4 Operating manual
40
Table 5
Parameter (characteristic) name Value
Refrigerating capacity, kW 6.4
Heating capacity, kW 8.7
Operating voltage, V 12
Electrical power consumption, W 260
Mechanical power consumption, kW From 1.4 to 8.0
Coolant R134a, ozone-friendly
Compressor DELPHI SP15
Compressor drive belt AVX-13x1200
In case of nonregular operation, in order to maintain good condition, it is recommended
once in every 15 days to turn on the system in the cooling mode (with the ambient temperature
above 15°С) for 15 to 20 minutes.
Independently of operating conditions, operation of the system must be checked once a
year at a service station with special equipment.
When putting the tractor to short-term storage, no preparation work is carried out for the air
conditioning system. During storage, turn on the air conditioner each 15 days for 15 to 20 minutes
with the engine running. The air temperature in the tractor cab must be not less than 20 °С.
When putting the tractor to long-term storage, check operation of the air conditioning sys-
tem with special equipment. If necessary, refill with refrigerating fluid. During storage, no service
work is carried out.
When removing from storage, have the air conditioning system serviced by a special service sta-
tion with diagnostic equipment.
Other details on maintenance and servicing of the air conditioning and heating system of
the cab are given in 3.2 “Maintenance of tractor components” of this manual.
WARNINGS:
1. ONLY SPECIALLY TRAINED PERSONNEL IS ALLOWED TO PERFORM
MAINTENANCE AND REPAIR WORKS FOR THE AIR CONDITIONING SYSTEM.
2. ANY WORK RELATED TO DISCONNECTION OF THE AIR CONDITIONING
SYSTEM ELEMENTS MUST BE PERFORMED BY TRAINED PERSONNEL WITH USE OF
SPECIAL EQUIPMENT FOR MAINTENANCE OF AIR CONDITIONERS. THE SYSTEM IS
UNDER HIGH PRESSURE EVEN WHEN IT IS OFF.
3. BEFORE STOPPING THE TRACTOR ENGINE, MAKE SURE TO TURN OFF THE
AIR CONDITIONER.
4. THE R134A REFRIGERATING FLUID IS NONTOXIC, NONFLAMMABLE, DOES
NOT FORM EXPLOSIVE MIXTURES. THE REFRIGERATING FLUID BOILING TEMPER-
ATURE IS MINUS 27°C UNDER NORMAL CONDITIONS. IN CASE OF SKIN CONTACT,
THE REFRIGERATING FLUID IMMEDIATELY EVAPORATES AND CAN CAUSE SUPER-
COOLING OF SKIN AREAS.
5. WHEN DISCONNECTING THE TRACTOR, THE CLOSED AIR CONDITIONING
SYSTEM CAN BE DETACHED BY DISCONNECTING THE QUICK-RELEASE COU-
PLINGS.
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