MANUALS · HEATER, AIR CONDITIONER AND VENTILATION [55] · страница 80 из 118 · Открыть оригинал PDF ↗

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CHARGING < Vehicles using R-134a refrigerant

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With thehandles turnedback all theway (valve closed)
install the adaptor valve to the low-pressure side of the
gauge manifold:

2Connect the charging hose (blue) to the adaptor valve:
3_Connect the quickjoint(for low pressure) to the charging
hose (blue):

Connectthequick joint (forlowpressure)tothelow
pressure service valve.

NOTE

The low-pressure service valve should be connected to the
compressor:

Caution

Use tools that are designed for R-134a:
2_To installthe quick joint, press sectionfirmly
against the service valve until a click is heard:
When connecting;run your hand along the hose
while pressing to ensure that there are no bends in
the hose .

5:Closethehighandlowpressurevalvesofthegauge
manifold.

Install the vacuum pump adaptor to the vacuum pump:
Connectthevacuumpump plugtothevacuumpump
adaptor.

8Connect the charging hose (yellow) to the R-134a connec-
tion port of the vacuum pump adaptor:
Tighten the adaptor valve handle (valve open).

10.Open the low pressure valve of the gauge manifold.

1. Turnthepower switchof the vacuumpump tothe ON
position:

NOTE

Even if the vacuum pump power switch is turned ON, the
vacuum pump will not operate because of the power supply
connection in step (7).

12. Turn the vacuum pump adaptor switch to the R-134a side to
start the vacuum pump:

Caution

Do not operate the compressor during evacuation

13. Evacuate toa vacuumreading of100 kPa(1.0 kg/ cm?,
14.2 psi) or higher (takes approx 10 minutes}:

14Turn the vacuumpump adaptor switch OFF and allow to
stand it for 5 minutes

Caution

Do not operate the compressor in the vacuum condition;
damage may occur

15.Carry out a leak test: (Good if the negative pressure does not
drop.)

Caution

If the negative pressure(vacuum} is lost, check for
loose connections. Then, repeat the evacuation proce-
dure from step (12). If negative pressure (vacuum) is
still lost, addIb of refrigerant and check systemusing
an R-134a compatible leak detector

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