Remove/install desiccant cartridge

AR83.30-S-6521EF

Remove/install desiccant cartridge

12.04.2019

Model

447 with engine 622

with code HH4 (THERMOTRONIC automatic climate control)

Model

447 with engine 622

with code HH9 (Air conditioner, automatic heater control)

Model

447 with engine 622

with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

Modification notes

10.04.2019

New operation step added.

Operation step 3.

Shown with engine 622.9

1

Desiccant cartridge

3

Screw plug

4

Sealing rings

2

Condenser

Shown with engine 622.8

1

Desiccant cartridge

3

Screw plug

5

Cover

2

Condenser

4

Sealing rings

 Danger

Risk of fire due to ignition of R1234yf refrigerant on hot components. Risk of poisoning caused by inhaling overheated refrigerant vapors. Risk of injury to skin and eyes caused by contact with escaped R1234yf refrigerant and when working on pressurized parts. Risk of explosion due to formation of ignitable refrigerant/air mixtures

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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0007-01A

 Warning

Risk of poisoning caused by inhaling overheated refrigerant vapors from an air conditioning system containing R134a. Risk of injury to skin and eyes caused by contact with liquid R134a refrigerant and when working on pressurized parts

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 rooms. Carry out repair work on the air conditioning system circuit only after the system has been evacuated.

AS83.00-Z-0006-01A

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A

Topical note

Protect air conditioning circuit and components from moisture when carrying out repair work

AH83.30-N-0005-01A

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

Notes on handling refrigerant R134a

AH83.30-N-0003-01A

 

Remove/install

1

Discharge air conditioning system.

Model 447 except code HX1 (R-1234yf refrigerant)

AR83.30-S-1760E

Model 447 with code HX1 (R-1234yf refrigerant)

AR83.30-S-1760EF

2

Remove front bumper.

AR88.20-S-2000E

3

Detach trim (5) and place to one side.

Model 447 with engine 622.8
with code HH4 (THERMOTRONIC automatic climate control)
Model 447 with engine 622.8
with code HH9 (Air conditioner, automatic heater control)
Model 447 with engine 622.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)

4

Unscrew screw plug (3) from condenser (2).

5

Remove receiver drier (1) from condenser (2).



Compressor oils (specification 362.1)

BB00.40-P-0362-01A

 Installation: Replace sealing rings (4) and moisten with compressor oil.

6

Install in the reverse order