Volkswagen Multivan 2010 User Manual

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Workshop Manual
Amarok 2011 ➤ , Beetle 2012 ➤ ,
Bora 1999 ➤ , CC 2010 ➤ , CC 2012 ➤ ,
Caddy 1997 ➤ , Caddy 2004 ➤ ,
Caddy 2011 ➤ ,
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Lupo 1999 ➤ , Lupo 3L 1999 ➤ ,
Multivan 2004 ➤ , Multivan 2010 ➤ ,
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New Beetle Cabrio 2003 ➤ ,
Passat 1994 ➤ , Passat 1997 ➤ ,
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Passat 2015 ➤ ,
Passat (NMS - US) 2012 ➤ ,
Passat CC 2009 ➤ ,
Passat Variant 1997 ➤ ,
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Service
Service Department. Technical Information

Volkswagen Multivan 2010 Specifications

General

Brand	Volkswagen
Model	Multivan 2010
Category	Automobile
Language	English

Summary

General notes on air conditioning systems

1.1 Introduction

Basic knowledge for performing trained work on air conditioning systems.

1.2 Additional information

Provides references for service work and troubleshooting latest malfunctions.

1.3 Basics of air conditioning

Explains physical principles of air conditioning, heat flow, and pressure.

1.4 Vapour pressure table for refrigerant R134a

Table showing pressure vs. temperature for refrigerant R134a.

1.5 Refrigerant R134a

Details on refrigerant R134a, its physical data, and critical points.

1.6 Characteristics of refrigerant R134a

Covers trade names, color, and vapour pressure of R134a.

1.7 Refrigerant machine oil

Information on the type of oil used with R134a and its properties.

1.8 Comfort

Discusses the role of air conditioning in passenger comfort and benefits.

1.9 How air conditioning works

Explains the fundamental process of air conditioning operation.

1.10 General safety

Essential safety precautions for handling refrigerants and working on AC systems.

1.11 Safety precautions for when working on vehicles with air conditioning and when handling refrigerant R134a

Specific safety measures for working on AC systems and handling R134a.

1.12 Basics for working on refrigerant circuit

Outlines fundamental procedures and cleanliness requirements for AC circuit work.

General information on refrigerant circuit

2.1 Refrigerant circuit components

Identifies and describes the various parts of the refrigerant circuit.

2.2 Design of refrigerant circuit

Illustrates and explains different designs of refrigerant circuits.

2.3 Evacuation and charging valves for quick-release couplings of air conditioner service station on refrigerant circuit

Details on connecting service stations using specific valves and procedures.

2.4 Switch and sender in refrigerant circuit and related connections

Explains the function of switches and senders within the AC refrigerant circuit.

2.5 Electrical components not installed in refrigerant circuit

Discusses control units and components related to the AC system.

2.6 Pressures and temperatures in the refrigerant circuit

Provides guidelines for pressures and temperatures under various operating conditions.

2.7 Refrigerant circuit with expansion valve

Illustrates the refrigerant circuit design using an expansion valve.

2.8 Refrigerant circuit with restrictor and reservoir

Illustrates the refrigerant circuit design using a restrictor and reservoir.

2.9 Test and measurement work that can be performed using a pressure gauge

Explains how to use pressure gauges for testing AC systems.

2.10 Air conditioner service and recycling equipment

Overview of equipment used for AC service, evacuation, and charging.

2.11 Notes to repairs on refrigerant circuit

Important considerations and requirements before performing repairs on the refrigerant circuit.

Statutory texts and instructions

3.1 Statutes and regulations

Legal and regulatory framework for AC systems and refrigerants in Germany.

3.2 Recycling and refuse law

Regulations concerning the recycling and disposal of refrigerants and oils.

3.3 Converting R12 refrigerant circuits to R134a refrigerant circuits and repairing them (retrofitting)

Procedures and considerations for retrofitting older R12 systems to R134a.

3.4 Maintaining records on refrigerant

Requirements for documenting refrigerant usage and handling.

Refrigerant circuit

4.1 Important repair notes on air conditioning

Crucial information and warnings before working on AC systems and refrigerants.

4.2 Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant

Guidance on converting R12 AC systems to use R134a refrigerant.

Working with the air conditioner service station

5.1 Important notes for working with the air conditioner service station

Essential guidelines and precautions for operating AC service stations.

5.2 Connecting air conditioner service station for measuring and checking

Steps for connecting the service station to the vehicle for diagnostics.

5.3 Draining refrigerant circuit using air conditioner service station

Procedure for safely discharging refrigerant from the circuit using a service station.

5.4 Evacuating refrigerant circuit using air conditioner service station

Steps for removing air and moisture from the refrigerant circuit.

5.5 Charging refrigerant circuit using air conditioner service station

Procedure for charging the refrigerant circuit with the correct amount of refrigerant.

5.6 Bringing air conditioning system into service after charging

Steps to follow after refrigerant charging to put the AC system into operation.

5.7 Charging container in air conditioner service station with refrigerant

Information on charging refrigerant into the service station's container.

5.8 Draining air conditioner service station

Guidelines for draining and maintaining the AC service station itself.

Detecting leaks in refrigerant circuit

6.1 Leak detection in refrigerant circuit using compressed air or nitrogen

Method for detecting leaks by pressurizing the circuit with air or nitrogen.

6.2 Searching for leaks in refrigerant circuits using leak detector - V.A.G 1796-

Procedure for using an electronic leak detector to find leaks.

6.3 Detecting leaks in refrigerant circuit using leak detecting system - VAS 6196- or leak detecting system - VAS 6201- or a later model

Using specialized systems for detecting leaks in refrigerant circuits.

Clearing refrigerant circuit of contaminants

7.1 Blowing through refrigerant circuit with compressed air and nitrogen

Process of flushing the refrigerant circuit with air and nitrogen to remove contaminants.

7.1.1 Blowing out refrigerant circuit

Detailed steps for blowing out individual components of the refrigerant circuit.

7.2 Purging (cleaning) refrigerant circuit with refrigerant R134a

Procedure for cleaning the refrigerant circuit using R134a refrigerant.

7.2.1 Principle circuit diagrams for various purging circuits

Illustrates circuit diagrams for different purging procedures.

Complaints

8.1 Possible complaints about refrigerant circuit

Lists common issues and symptoms related to the refrigerant circuit.

8.1.1 Test prerequisites

Conditions and checks required before diagnosing AC system complaints.

8.1.2 Possible complaints

Detailed list of potential problems with their corresponding causes and rectification.

8.2 Smells from heater and air conditioner unit

Troubleshooting guide for identifying sources of odors in the HVAC system.

8.2.1 Is the smell coming from evaporator or the heat exchanger?

Diagnosing smells originating from specific heat exchange components.

8.2.2 Ultrasonic air conditioner cleaning unit - VAS 6189A-

Using an ultrasonic unit for cleaning the AC system and neutralizing odors.

8.2.3 Spraying the evaporator with the suction feed spray-gun - V.A.G 1538- and spray lance

Method for cleaning the evaporator using a spray gun and lance.

Connecting air conditioner service station

9.1 For vehicles that have connections on both low-pressure and high-pressure sides of refrigerant circuit

Describes connecting the service station to systems with dual-side connections.

9.1.1 Connecting air conditioner service station for measuring and checking

Step-by-step guide for connecting the AC service station for diagnostic checks.

Checking pressures on vehicles

10.1 Checking pressures in refrigerant circuit (using air conditioner service station)

Procedures for checking refrigerant pressures using an AC service station.

10.1.1 Test prerequisites

Essential checks and conditions required before measuring AC system pressures.

10.1.2 Checking pressures

Detailed steps for checking system pressures and comparing them to specifications.

10.1.3 Continuation of checking pressures

Further steps and considerations for continuing pressure checks on various systems.

10.2 Checking systems with a restrictor and collector (with internally regulated air conditioner compressor)

Specific pressure checking procedures for systems with restrictors and internally regulated compressors.

10.2.1 Specifications

Expected pressure values and tolerances for systems with restrictors.

10.3 Checking systems with an expansion valve and reservoir (with internally regulated air conditioner compressor)

Pressure checking for systems with expansion valves and internal regulation.

10.3.1 Specifications

Expected pressure values and tolerances for systems with expansion valves and internal regulation.

10.4 Checking systems with an expansion valve and reservoir (without regulated air conditioner compressor)

Pressure checking for systems with expansion valves but without internal regulation.

10.4.1 Test prerequisites

Prerequisites for checking systems with expansion valves and reservoirs.

10.4.2 Checking

Step-by-step guide for checking pressures in systems with expansion valves.

10.4.3 Specifications

Expected pressure values and tolerances for systems with expansion valves.

10.5 Checking systems with a restrictor and reservoir and air conditioner compressor regulating valve - N280- (with externally regulated air conditioner compressor)

Procedures for checking systems with restrictors and externally regulated compressors.

10.5.1 Specifications

Expected pressure values for systems with restrictors and external regulation.

10.6 Checking systems with an expansion valve, receiver and air conditioner compressor regulating valve - N280- (with externally regulated air conditioner compressor)

Pressure checks for systems with expansion valves and external regulation.

10.6.1 Specifications

Expected pressure values for systems with expansion valves and external regulation.

10.7 With expansion valve, receiver and electrical air conditioner compressor

Checking pressures for systems with expansion valves and electrical compressors.

Renewing components

11.1 In the event of leaking or damaged components (apart from the air conditioner compressor, receiver or reservoir)

Steps for replacing leaking or damaged AC components.

11.1.1 If the refrigerant circuit was completely empty

Procedure for replacing components when the refrigerant circuit is empty.

11.1.2 If there is still refrigerant in the refrigerant circuit

Procedure for replacing components when refrigerant is still in the circuit.

11.2 Renewing air conditioner compressor

Steps for replacing the air conditioner compressor.

11.2.1 Without needing to purge refrigerant circuit of contaminants (cleaning), e.g. in cases of external damage after an accident

Replacing AC compressor without purging in case of external damage.

11.2.2 Leaks or internal damage (e.g. noises or lack of power)

Procedures for addressing AC compressor leaks or internal damage.

11.3 Renewing receiver or reservoir, and restrictor

Steps for replacing the receiver, reservoir, or restrictor.

11.3.1 After purging refrigerant circuit of contaminants, e.g. due to moisture intrusion (because refrigerant circuit has stood open for a length of time) or due to dirt

Replacing receiver/reservoir/dryer after purging due to moisture or dirt.

11.3.2 Without needing to purge refrigerant circuit of contaminants (e.g. damage in an accident); no refrigerant has escaped and no moisture or dirt has entered refrigerant circuit

Replacing receiver/reservoir/restrictor after damage without purging.

Testing equipment and tools

12.1 List of test equipment, tools and materials

An overview of essential equipment and tools for AC refrigerant circuit repairs.

12.1.1 Tools and materials available from distribution centre or importer

Lists tools and materials that can be obtained from distributors or importers.

12.1.2 Tools and materials commercially available

Lists tools and materials that are commercially available.

12.1.3 Tools to be made locally

Instructions for creating specific tools locally.

12.1.4 Tools and materials available from distribution centre or importer

Lists additional tools and materials from distribution centers.

12.1.5 Tools and materials commercially available

Lists more commercially available tools and materials.

12.1.6 Tools to be made locally

Lists tools to be made locally.