Refrigerant R134A Injection - TEXA Konfort 700R Series Manual

Konfort Series 700R Service Manual
Image 2.10 – Part of the hydraulic circuit involved in the R1234yf recovery

2.3.3 Refrigerant R134a injection

During this phase, the equipment activates the following electrical
components:
Pressure sensor (1);
LP electro-valves;
HP electro-valves;
EVCA1 charge electro-valves;
Refrigerant load cell (4).
The injection of the R134a refrigerant occurs because of the transfer of
the amount of refrigerant, initially set from the menu of the equipment,
from the upper bottle to the A/C system of the vehicle (thanks to the
pressure difference).
This transfer is simply performed thanks to the opening of the two
EVCA1 electro-valves in case of R134a.
The closure of these electro-valves is controlled by the firmware of the
management board of the equipment depending on the weight decrease
revealed by the load cell located under the two bottles of the unit.
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phase on Konfort 780R BiGas units
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