Remove/install condenser

AR83.30-P-6540RFW

Remove/install condenser

02.07.2019

Model

253.992/993 with engine 780

1

Electrical connector

4

Catches

2

Nuts

5

Condenser

3

Refrigerant lines

B12

Refrigerant pressure sensor

 Danger

Risk of explosion caused by escaping hydrogen or overheating of the fuel tanks when working on the hydrogen system. Risk of frostbite to body parts caused by escaping gas and by touching component parts carrying gas when emptying fuel tanks. Risk of asphyxiation caused by inhalation of air diluted by hydrogen. Risk of burn injuries by coming into contact with an invisible pale blue hydrogen flame.

AS00.00-Z-0030-01B

 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 injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Topical note

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

AH83.30-N-0005-01A

Topical note

Notes on installation position of condenser

AH83.30-P-0002-01LW

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on fuel cell system

AH00.00-P-0022-01RFW

Notes on handling refrigerant R1234yf

AH83.30-P-0003-02A

 

Remove/install

1

Ensure that the requirements for driving into the workshop are fulfilled.

Topical note

Requirements for driving into the workshop

AH00.00-P-0021-01RFW

2

Print out "tank system, fuel cell, form event log," fill out, and attach to the vehicle somewhere clearly visible.



OF00.00-P-3000-21RFW

3

Drain air conditioning system.

AR83.30-P-1760LW

 Installation: Evacuate air conditioning system, refill it and check it for proper operation and leak tightness.

4

Remove high-voltage battery cooler.

AR08.50-P-0126RFW

5

Disconnect electrical connector (1) from refrigerant pressure sensor (B12).

6

Unscrew nuts (2), remove refrigerant lines (3) and seal openings using suitable stop plugs.

 Installation: Install new sealing rings.

 Nut, line to condenser

*BA83.30-P-1002-01Q

 Record plug

*129589009100

7

Release catches (4) and guide out condenser (5) downwards.


Carefully guide out condenser (5).
Otherwise, the condenser (5) or surrounding component parts may be damaged.

8

Check condenser (5) for damage.

If damage is present,



replace condenser (5).

9

Check receiver drier for re-usability.

If necessary,



replace receiver drier.

AR83.30-P-6521RFW

10

Modify refrigerant pressure sensor (B12).

When replacing the condenser (5).

AR83.30-P-5430LW

 Refrigerant pressure sensor to condenser

*BA83.30-P-1006-01Q

11

Install in the reverse order.

 Air conditioning

Number

Designation

Model 253

BA83.30-P-1002-01Q

Nut, line to condenser

Nm

12

 Air conditioning

Number

Designation

Model 253

BA83.30-P-1006-01Q

Refrigerant pressure sensor to condenser

Nm

10