Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

AR83.30-P-1760MCC

Drain, evacuate and recharge air conditioning, check for proper operation and check for leaks

19.05.2015

Model

451.3 (except 451.39), 451.4 (except 451.49)

with code I01 (Air conditioning Plus)

Model

451.39/49

1

Plug

2

Refrigerant line

3

Refrigerant line

4

Air conditioning service unit connection

5

Air conditioning service unit connection

6

Air conditioning service unit

 Danger !

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

Do not 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 drained.

AS83.00-Z-0001-01A



Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A



Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A



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

AH83.30-N-0005-01A



Notes on handling refrigerant R134a

AH83.30-N-0003-01A

Draining

1

Remove electric vehicle sound generator

Model 451.390/392/490/492
with code B53 (Pedestrian sound module)

AR08.00-P-1000MEX

2

Remove maintenance flap

3

Unscrew plugs (1) from diagnostic sockets of refrigerant lines (2, 3)

4

Connect air conditioning service unit connection (4) to diagnostic socket of refrigerant line (2) and air conditioning service unit connection (5) to diagnostic socket of refrigerant line (3)



000 588 04 82 00 Air conditioning service unit

WS83.00-P-0031B

 For all operation steps, the operator's manual for the air conditioning service unit (6) must be followed.

5

Extract refrigerant using air conditioning service unit (6)

 Note down suctioned off oil fill capacity.

Evacuate

6

Install new desiccant cartridge

Only if refrigerant circuit has been opened.

AR83.30-P-6525MCC

7

Clean refrigerant and evacuate air conditioning system using air conditioning service unit (6)

Filling

8

Replace oil filling quantity noted down during evacuation of air conditioning system with new compressor oil and route back to the refrigerant circuit


Pay attention to correct oil filling quantity.
Otherwise the refrigerant compressor may be damaged.

9

Fill air conditioning system using air conditioning service unit (6)

 Refrigerant

*BF83.30-P-1001-01C

10

Disconnect air conditioning service unit connection (4) from diagnostic socket of refrigerant line (2) and air conditioning service unit connection (5) from diagnostic socket of refrigerant line (3)

11

Screw plugs (1) onto diagnostic socket of refrigerant lines (2, 3)



Check

12.1

Use nitrogen tester to inspect air conditioning for leaks at all points at which the system was opened

Model 451.390/392/490/492



000 588 10 21 00 Leak tester

WS83.00-P-0008B

12.2

Using air conditioning leak detector, inspect air conditioning for leaks at all points at which the system was opened

Model 451.3 (except 451.390/392), 451.4 (except 451.490/492)
with code I01 (Air conditioning Plus)

13

Install electric vehicle sound generator

Model 451.390/392/490/492
with code B53 (Pedestrian sound module)

AR08.00-P-1000MEX

14

Install maintenance flap

 Air conditioning

Number

Designation

Model 451.3 (except 451.390/391), 451.4 (except 451.490/491)

Model 451.390/490
with code V03 (Battery cooling system)

BF83.30-P-1001-01C

Refrigerant

Filling capacity

g

430 (+0/–20)

500

 Air conditioning

Number

Designation

Model 451.390/490
except code V03 (Battery cooling system)

Model 451.391/491

BF83.30-P-1001-01C

Refrigerant

Filling capacity

g

470

550