KIROVETS K-744R1, K-744R2, K-744R3, K-744R4 tractors
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2. In order to prevent a system failure during tractor operation and non-use of air
conditioner within this period, it is necessary to do the following:
2.1. Once in every two weeks run the compressor for 5 min.
2.2. At the ambient temperature below 0°С run the compressor for 5 minutes once in
every two weeks in a room with the temperature above 0°С.
3. In case of warehousing storage (at the ambient temperature above or below 0°С),
periodic start-up of the compressor is not required.
CAUTION!
In order to prevent compressor jamming after winter period or a long-term
service interruption, perform manual barring of compressor shaft for 10 turns clock-
wise (to this end, 12/+24V to the compressor coupling for its activation). This
operation is required to supply oil from compressor case to the cylinders and lubricate
them.
Recommendations for maintenance of the air conditioning system
1. Fill the system with 950 g* of R134a halocarbon.
2. System filling with halocarbon and replacement of system units shall be performed
only by specialists dealing with air conditioning maintenance and repair.
3.
IT IS ABSOLUTELY PROHIBITED
to mix R134a halocarbon with any other refrig-
erants or use any refrigerant except the permissible one.
4.
IT IS PROHIBITED to:
work with one (out of 2) faulty fan of the evaporator unit;
fill the engine cooling system and air conditioning system with water.
5. Use oil of ZXL100PG or PAG-100 grade for compressor lubrication. The volume of
oil to be filled is 200 ml (with compressor Sanden SD7H15) or 150 ml (with compres-
sor Zexel TM-14HD)*. It is not allowed to store or keep it open for more than 30 min.
In case when the above-mentioned period is exceeded, oil shall not be suitable for
use.
6. It is not allowed to use spent oil.
7. The ingress of moisture into oil is not allowed.
8. In case of depressurising upon system refilling, it is necessary to replace the dehy-
dration filter of the moisture and oil separator.
N o t e . * The data on the amount of halocarbon and refrigerating oil are given for the system
filled at
the manufacturer’s plant. In case of system refilling in the course of operation, in order
to determine the required amount of oil in the compressor, it is necessary to advice with ex-
perts of Peterburgsky Traktorny Zavod or a specialised enterprise dealing with maintenance
and repair of air conditioners.