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Drawing off, evacuating and filling heating and air conditioning system (R1234yf) BMW M2 F87

64 50 010

Warning!

Only persons in possession of a professional certificate of competence for the maintenance and repair of heating and air conditioning systems are authorised to carry out repair work on the refrigerant circuit. It must be available no later than 04 July 2010 (applies only to EU countries; follow countryspecific regulations in non-EU countries). Refrigerant circuit is under high pressure!

If the protective caps on the filling valves are difficult to open, there is a danger of injury from leaking valve inserts.

Repair work may only be carried out on a depressurised refrigerant circuit!

Before conducting repairs, check the actual pressure drop on the pressure gauge of the

A/C service station

Avoid contact with refrigerant and refrigerant oil.

Observe safety information for handling refrigerant R1234yf

Follow safety information for handling refrigerant oil.

Attention!

Risk of damage!

Only BMW-approved R1234yf refrigerant may be used (refer to sourcing reference: Operating Fluids).

Restart engine only when air conditioning has been

correctly filled.

Vehicle-specific notes:

Only I01:

Equipment specification with and without heat pump:

To access the connections for the refrigerant lines, remove front luggage compartment well.

Equipment specification with heat pump:

Before the drawing off, evacuation or filling procedure, carry out the following steps:

  1. Switch on terminal 15: To do this, operate the start/stop button without operating the brake pedal.
  2. Switch off blower at IHKA controls (so that compressor cannot start up).
  3. Switch on low-beam headlight (so that terminal 15 can switch off automatically after a certain period).

If nec., charge the high-voltage battery (12 V battery is charged via the high-voltage battery).

  1. Pull off connector (1).

This state must be retained for the duration of the entire drawing off, evacuation and filling procedure.

After filling the refrigerant circuit, reconnect connector (1)!

Equipment specification with and without heat pump:

After filling the refrigerant circuit, delete fault memory!

Only I12:

Attention!

Risk of damage!

Risk of paint damage and scratches!

Open engine compartment lid to access the connections of the refrigerant lines!

Open and close the engine compartment lid as specified in the instructions without exception!

Attention!

For R1234yf, an A/C service station especially suited for this refrigerant must be used!

A/C service station for R134a must not be used!

Comply with the notes on refrigerant (R134a, R1234yf) and refrigerant oil (Sanden SP-A2).

Risk of damage!

Carefully move the climate service station!

Comply with the operating instructions and service interval for the A/C service station!

Make sure that the hoses of the A/C service station are drained after the drawing off or filling procedure!

The climate service station contains highly sensitive components, such as scales. These components will be damaged due to improper handling, such as fast driving over a bump. This will result in a significant reduction of the measuring accuracy when drawing off and filling.

Attention!

The vehicle must be parked on the floor during all drawing off, evacuation and filling procedures!

Filling a raised vehicle will result in insufficient filling levels.

Note:

In the event of complaints, perform A/C performance test!

If the system fails the test, draw off, evacuate and fill the air conditioning in accordance with the operating instructions of the relevant service station.

Instructions for drawing off air conditioning:

Before evacuation, the A/C service station will investigate the refrigerant.

If the refrigerant is consistent with the requirements, evacuation is continued.

If the refrigerant is not consistent with the requirements, it must be evacuated into an external container by a special extractor unit and disposed of.

In order to enhance the separation of refrigerant and refrigerant oil, allow the Air conditioning to run for a few minutes before drawing off.

The limits the entrainment of refrigerant oil while it is drawn off.

Drawn-off refrigerant oil must be changed and reintroduced via the A/C service station.

During drawing off, set the blower of the heating and airconditioning unit to the middle blower speed. This ensures that drawing off is more effective since the pressure on the low pressure side increases.

Recycling:

Dispose of drawn-off refrigerant oil as hazardous waste.

Observe country-specific waste disposal regulations.

Note in case of contaminated refrigerant R1234yf: If the A/C service station for R1234yf identifies a contaminated refrigerant in the refrigerant circuit of the vehicle before evacuation, then a special procedure to draw off and dispose of this refrigerant must be followed.

In this case, contact special tools@bmwgroup.com.

Instructions for evacuating off air conditioning:

Before each filling, evacuate the refrigerant circuit.

Observe an evacuation time of at least 30 minutes.

The evacuation procedure removes all traces of ambient air, water vapour and any other gases present from the heating and air conditioning system. This enables subsequent system filling with refrigerant.

If the vacuum does not remain stable when the system is off, run the procedure for leaks in the refrigerant circuit.

During evacuation, set the blower of the heating and airconditioning unit to the middle blower speed. This ensures that evacuation is more effective since the pressure on the low pressure side increases.

Notes for filling heating and air conditioning system:

In certain cases, Sanden SP-A2 refrigerant oil must be injected into the refrigerant circuit.

Before filling with refrigerant, replace the refrigerant oil entrained during drawing off.

Also top up any lost fluid as indicated in the table:

Loss of R1234yf refrigerant

Table 1 indicates the permitted loss of refrigerant after a specific period of time. There is no leak. refrigerant oil may not be topped up.

Table 2 indicates the amount of refrigerant oil must be topped up with an unapproved loss of refrigerant due to a leak after a specific period of time.

Table 2:

Number of years

since last filling

Loss of

R1234yf

refrigerant [g]

Top up quantity refrigerant oil
0 -1 < 120 0

Different cases:

  1. Loss of refrigerant per Table 1is not exceeded

Top up lost R1234yf refrigerant

It is not permitted to top up the refrigerant oil

  1. Loss of refrigerant per Table 1 is exceeded Top up lost R1234yf refrigerant refrigerant oil must be topped up additionally per Table 2
Table 1:

Number of years

since last filling

0 – 1 1 – 2 2 – 3 3 – 4 4 – 5
Permissible loss [g] -> Do not top up refrigerant oil ≤ 30 ≤ 60 ≤ 90 ≤ 120 ≤ 150

Follow notes for opening and replacing parts in refrigerant circuit.

120 – 150 10
> 150 20
1 – 2 < 180 0
180 – 210 10
> 210 20
2 – 3 < 240 0
240 – 270 10
> 270 20
3 – 4 < 300 0
300 – 330 10
> 330 20
4 – 5 < 360 10
> 360 20

Depending on the type of component replaced on the heating and air conditioning system, it may be necessary to the top up the refrigerant oil, even if no measurable losses have occurred during drawing off. Follow the notes provided by the air conditioning manufacturer, taking account of the tolerances (and inaccuracies) indicated in the operating instructions of the relevant service station.

Information on the required refrigerant capacity for the entire air conditioning is contained on the type plate (1) in the engine compartment.

If necessary, refer to the Technical Data for capacity.

Installation note:

Reseal refrigerant filler necks on vehicle with sealing caps.


Categories: 64 Heating and air conditioning
Tags: air conditioningair conditioning systembmw m2f87m2R1234yf
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