ar8330t1762aa

Evacuating air conditioning system, leak test

Typ ar · téma 83.30 · verze 0200 · 2006-07-26

Platí pro: MODELS NMB671.015 /020 /021 /030 /042 with CODE (HKA) Konvekta ACX 602 air conditioning with roof heater

Není k dispozici v jazyce „cs“; zobrazeno v jazyce Angličtina.

Zařazení

Funkční skupina 3 Nástavba › 83 Klimatizace › 83.30 Klimatizace — Řada 671 (modely 015, 020, 021, 030, 042)

EinPAS 39 Topení/větrání/chlazení › 39.15 Klimatizace › 39.15.5 Klimatizace kompletní — Řada 671 (modely 015, 020, 021, 030, 042)

AR83.30-T-1762AA

Evacuating air conditioning system, leak test

13.1.03

MODELS NMB671.015 /020 /021 /030 /042 with CODE (HKA) Konvekta ACX 602 air conditioning with roof heater

Evacuating air conditioning system, leak test

T83.30-0061-06

2 Pressure-side testing and filling valve

3 Suction-side testing and filling valve

4 Shutoff valve on intake side

Modification notes

10.3.05

Open electromagnetic shutoff valve, added

Step 1

Evacuating

Danger!

Risk of explosion from welding or soldering work on closed air conditioning system. Risk of poisoning from inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with liquid refrigerant.

Never perform welding work on or near a closed air conditioning system. No smoking or open flames. Wear safety glasses and protective gloves. Work only in well ventilated areas. Carry out repair work on the air conditioning system circuit only after the system has been discharged.

AS83.00-Z-0001-01A

Notes on handling refrigerant R134a

Air conditioning with refrigerant R134a

AH83.30-N-0003-01A

1

Open electromagnetic shutoff valve

Open manually

AR83.30-T-5460AA

Open electrically

AR83.30-T-5470BAC

2

Unscrew protective caps from the pressure-side testing and filling valve (2) and from the suction-side testing and filling valve (3)

3

Connect pressure and suction line of the air conditioning extraction and recycling unit to the pressure-side testing and filling valve (2) and to the suction-side testing and filling valve (3)

Refer to the operating instructions for the air conditioning extraction and recycling unit.

*WE58.40-Z-1002-22A

4

Unscrew protective cap from the suction-side shutoff valve (4)

5

Screw in suction-side shutoff valve (4) approx. 3 turns

6

Switch on air conditioning extraction and recycling unit

Refer to the operating instructions for the air conditioning extraction and recycling unit.

7

Evacuate air conditioning using the pressure-side testing and filling valve (2) and the suction-side testing and filling valve (3)

Evacuate air conditioning circuit up to the maximum attainable vacuum, but for at least 1 hour.

If moisture has penetrated into the air conditioning circuit, evacuation must be continued for at least 8 hours.

Leak test

8

Switch off air conditioning extraction and recycling unit

Close the valves at the pressure gauge of the air conditioning extraction and recycling unit. This prevents the result of the leak test from being distorted.

9

Read off vacuum display on the pressure gauge of the air conditioning extraction and recycling unit

Note vacuum pressure value

10

After waiting for 10 minutes, read off vacuum display on the pressure gauge again

Compare current vacuum value to the recorded vacuum value. If there is a drop in the vacuum:

Fill air conditioning without leak test

After filling the air conditioning system, check for leaky areas:

AR83.30-T-1777AA

Inspect the refrigeration circuit for leaks.

Before repairing leaky area empty air conditioning system:

AR83.30-T-1209-01C

Discharge air conditioning system

Carry out a leak test again after the repair work. Repeat steps 1 to 10 for this purpose.

AR83.30-T-1780AA

11

Fill air conditioning system

Evacuate and do not carry out leak test.

AR83.30-T-1777AA

Workshop equipment

WE58.40-Z-1002-22A

Air conditioning service station

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