Clean evaporator of rear air conditioning

AR83.50-S-9105E

Clean evaporator of rear air conditioning

24.07.2020

Model

447.7

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

with code V23 (Interior trim, premium version)

Model

447.8

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

except code ZK7 (Equipment line MARCO POLO)

Model

448

1

Filter slot

2

AC housing

 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.

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 drained.

AS83.00-Z-0001-01A

Topical note

Notes on carrying out repair work in the vehicle interior

AH68.00-N-0001-01S

Topical note

Procedure for a damaged or leaky air conditioning system

AH83.30-N-0004-01A



Remove

1

Switch off ignition.

2

Remove dust filter.

Model 447.7
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
with code V23 (Interior trim, premium version)
Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
except code ZK7 (Equipment line MARCO POLO)
Model 448
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)



AP83.50-S-8386E

3

Place a suitable receptacle under area of condensation drains.

4

Remove left rear side trim.

Model 447.7
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
with code V23 (Interior trim, premium version)
Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
except code ZK7 (Equipment line MARCO POLO)
Model 448.7
with code V23 (Interior trim, premium version)
Model 448.8

AR68.30-S-1206E

5

Drill hole in air conditioner housing (2).

AR83.50-S-9105-01E



Clean

6

Insert probe of cleaning equipment into air conditioner housing (2).

Cleaner for A/C system

*BR00.45-Z-1084-04A

7

Cover opening of filter slot (1) and drilled hole with suitable rags.


Cleaner must not enter the vehicle interior.
Otherwise damage and complaints may occur.

8

Spray the evaporator by moving the probe back and forth repeatedly.


Cleaner must not enter the vehicle interior.
Otherwise damage and contamination can occur.

 Approx. Spray 1 l of cleaner. Then allow cleaner to act for at least 30 minutes.

9

Check whether the cleaner escapes from the condensation drains.

If cleaner only drips out.



check condensation drains for contamination and clean, if necessary.

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

10

Start engine.

11

Switch on rear air conditioning system.

12

Open all doors on vehicle.

13

Set air distribution to passenger compartment and let blower run for at least 5 min at the highest stage.


Only when these instructions are complied with exactly is the evaporator cleaned completely and the odor eliminated.
Otherwise, there may be remaining odor.

 The evaporator is flushed out as a result.
Leave the doors on the vehicle open.

14

Plug hole in air conditioner housing (2).

Sealing washer

*BR00.45-Z-1008-15A

15

Switch off ignition.



Install

16

Remove receptacle.

17

Install left rear side trim.

Model 447.7
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
with code V23 (Interior trim, premium version)
Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
except code ZK7 (Equipment line MARCO POLO)
Model 448.7
with code V23 (Interior trim, premium version)
Model 448.8

AR68.30-S-1206E

18

Install new dust filter.

Model 447.7
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
with code V23 (Interior trim, premium version)
Model 447.8
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)
except code ZK7 (Equipment line MARCO POLO)
Model 448
with code HZ7 (TEMPMATIC semi-automatic air conditioning in rear)



AP83.50-S-8386E

Repair materials

Number

Designation

Order number

BR00.45-Z-1008-15A

Sealing washer

A 110 987 10 44

BR00.45-Z-1084-04A

Cleaner for A/C system

A 000 989 46 00 09