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Bosch B22CS50SNW-01 General Repair - Instruction

Bosch b22cs50snw-01 refrigerator/freezer
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1
SAFETY ......................................................... 2
1.1
Safety instructions ............................................................... 2
1.2
Repair instructions .............................................................. 2
2
THEMES VON A - Z ...................................... 3
2.1
Condensation tray flows over ............................................. 3
2.2
Check list for installation faults .......................................... 4
2.3
Colour changeover white .................................................... 5
2.4
Detached metal strips from the front ................................. 5
2.5
Opening the refrigeration circuit ........................................ 6
2.6
Energy absorption ............................................................... 6
2.7
2.8
Humidity ................................................................................ 8
2.9
Noises ................................................................................. 10
2.10
Noise measure from customer .......................................... 16
2.11
Odours ................................................................................ 17
2.12
Repairing the refrigeration circuit .................................... 18
2.13
Refrigeration circuit leaking .............................................. 24
2.14
Refrigerant capacity specification .................................... 24
2.15
2.16
2.17
2.18
Temperature ....................................................................... 27
2.19
Filler neck on the compressor too short .......................... 32
2.20
Compressor Diagnostics ................................................... 33
2.21
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General repair-instruction Cooling / Freezing
2.22
2.23
2.24
2.25
2.26
2.27
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Leak in the foam ................................................................. 36
Removing adhesive residue .............................................. 36
Cracks in the refrigerated food container ......................... 37
Different compartments ..................................................... 40
LAW ADVICES ............................................ 41
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Summary of Contents for Bosch B22CS50SNW-01

  • Page 1: Table Of Contents

    General repair-instruction Cooling / Freezing 2.22 Lokring connection - Conditions of the tubes ....35 SAFETY ............2 2.23 Leak in the foam ..............36 Safety instructions ............... 2 2.24 Removing adhesive residue ..........36 Repair instructions .............. 2 2.25 Cracks in the refrigerated food container ......

  • Page 2: Safety

    SAFETY Repair instructions Safety instructions Caution! Danger! ► Comply with ESD information! ► NEVER attempt repairs by randomly replacing components! ► Repairs may be carried out only by customer service ► Always proceed systematically and comply with the technical engineers trained by the manufacturer! documentation for the appliance! ►...

  • Page 3: Themes Von A - Z

    THEMES VON A – Z Condensation tray flows over Condensation trays can overflow without visible mechanical failure (loose or defect door gasket, etc.). Solution: In this case a self-adjusting heater has to be installed. This heater assists the evaporation at a high water-level. Spare part-No.: 00753407 The assembly has to be done according to the spare part information.

  • Page 4: Check List For Installation Faults

    the compressor may be impeded. Heat will build up and impair Check list for installation faults the refrigeration circuit. Observe the ventilation dimensions in the installation The screw in the upper installation strip brushes against the instructions. The air duct must not be obstructed. Non- cover panel on the built-under cupboard.

  • Page 5: Colour Changeover White

    Example (old and new white) Colour changeover white The previous white (VZF 37351) has been changed over all product ranges and all brands to a new, brighter white ( VZF0720 ). The new white will be incorporated in the refrigerator/freezer area without new factory part numbers, spare-parts numbers, VIBs or CSIs.

  • Page 6: Opening The Refrigeration Circuit

    2.6.2 Energy efficiency Opening the refrigeration circuit The energy efficiency classes consist of energy consumption, usable Whenever the refrigeration circuit is opened, always capacity and type of appliance. replace the dryer before evacuating and filling the refrigeration circuit. The energy efficiency classes range from A plus (very low) to G (high).
  • Page 7 ► 2.6.4 Measuring the energy consumption Cold-storage compartment 8 °C to 12 °C ► Refrigerator compartment 5 °C The energy consumption indicated in the brochures was determined in ► the laboratory under standard conditions. ”Cool-fresh” compartment: –2 °C to +3 °C ►...

  • Page 8: Bottlenecks In The Circuit (Partial Blockage)

    Bottlenecks in the circuit (partial blockage) Humidity The capillary tube is the narrowest point in the refrigeration circuit. 2.8.1 Increased humidity A blockage caused by contaminants or a partial blockage is most Causes: likely to occur in the capillary tube. The cross-section is narrowed by ►...
  • Page 9 ► If possible, set a lower refrigerator compartment temperature and increase the compressor running time. 2.8.2 Humidity on the side panel Cause of fault: If the air humidity is above 80 %, condensation may occur on the side panel. Condensation may occur especially in the case of so-called side-by- side appliances (refrigerator and freezer are placed next to each other) due to the lack of ventilation between the side panels.

  • Page 10: Noises

    Noises ► Switching noises 2.9.1 Normal noises ► Compressor noise The clicking noise is caused by the temperature controller or a solenoid valve. The droning noise is generated by the compressor. It may briefly become slightly louder when the compressor switches on. When the compressor switches off, a rattling noise may be heard.
  • Page 11 2.9.2 Eliminating causes of noise ► ► Built-in parts are loose or sticking Appliance is not level Check the removable parts and, if required, re-insert. Level the appliance with the aid of a spirit level. Use the height- adjustable feet or place packing underneath them. ►...
  • Page 12 ► Junction of the throttle/suction tube (forked tube) vibrating To prevent vibration noises, the junction of the throttle / suction tube should be jacketed with an absorption material, material no. On the freezer compartment evaporator: 00153737. On the compressor: 173_58300000002379_ara_en_j.doc – 29.04.14 Seite 12 von 41...
  • Page 13 ► Flowing noises on the evaporator 2.9.3 History of noise generation Loud flowing noises are generated by residual air in the refrigeration The type of noises has changed in modern refrigerators/freezers. circuit. The circuit must not be rinsed while there are flowing noises. Modern appliances are usually quieter than old refrigerators/freezers.
  • Page 14 Customer information: - Explain operating noise. Noise testing Use additional information: "NOISES" - Argumentation for comparison of old and new appliances: Is customer complaint • Foamed evaporators justified? • Energy-saving compressor • Ecological refrigerant fluid Is customer dissatisfied? Is the appliance too noisy? (subjective impression) Simple, mechanical noise ("rattling")?
  • Page 15 Compressor-, circuit-noise Is internal or external (vibrating, whistling, bubbling, fan available? gargling, humming, pulsating)? Fan noise, Replace Compressor okay? screaming, compressor scratching noise? Absorption material on: Fan okay? Replace fan • Forked tube? Attach absorption material • GS evaporator Laying of capillary tube okay? Fix fan centrical / Is the fan fixed, (particularly before FD 7210)

  • Page 16: Noise Measure From Customer

    4. It must be expected that the applied algorithms in the app are faulty. 2.10 Noise measure from customer Usually such apps are not certified or created by hobby programmers who do not know about all required specification. Thus errors must Hint be expected.

  • Page 17: Odours

    To 3.) 2.11 Odours For the calculation of a refrigerator‘s declaration value according to Our appliances are manufactured from plastics which conform to the IEC 60704 at least 3 or up to 6 compressor runtimes have to be Lebensmittel-Bedarfs-Gegenstands-Gesetz (Ordinance Food recorded and time-averaged in the correct way.

  • Page 18: Repairing The Refrigeration Circuit

    the appliance. This “chemical” odour sticks to plastic and, in the most 2.12 Repairing the refrigeration circuit unfavourable case, may alter the flavour of other non-packed food. 2.12.1 Safety instructions Information in the operating instructions: When handling refrigerants, specific safety measures must be If possible, pack food or cover well before placing in the appliance.
  • Page 19 2.12.2 R 600a If the compressor oil has to be disposed of separately, comply with the following: 2.12.2.1 Take precautions when repairing the the refrigerant circuit ► Before removing the oil, evacuate the compressor for at least The hydrocarbon R 600A is highly flammable, however only in 15 minutes.
  • Page 20 ► 2.12.2.4 Repairs to the R 600A refrigerant circuit Check weighing accuracy with standard weight and, if required, re-adjust the balance. Draining the refrigerant ► Weigh extraction valve (subtract) – 65.4 g The refrigerant circuit must be punctured on both sides in order to ►...
  • Page 21 ► Weigh the refrigerant cartridge with screwed-on extraction 2.12.2.5 Evacuating and filling the appliance valve. Evacuating the appliance ► When the weighing result is displayed, the balance must be calibrated to 0.0 g (cartridge and extraction valve situated on the balance). The appliance must be evacuated on both sides.
  • Page 22 ► Filling the appliance Close the extraction valve on the refrigerant cartridge and the black valve on the fitter aid. ► Switch off the compressor. Always fill with liquid. 2.12.2.6 Reseal the repaired R 600A refrigerant circuit ► Place the refrigerant cartridge on its head. Pinch off the compressor service pipe ►...
  • Page 23 2.12.3 R 134a blue switch is for the intake side. The valve with the red switch is for the pressure side. The black valve is the filler valve and the yellow Important information when carrying out repairs: valve is the one which leads to the vacuum pump. The tormeter is required during the evacuation process and can be disabled with the Work on an open R134a refrigeration circuit should be concluded as valve situated below.

  • Page 24: Refrigeration Circuit Leaking

    The air circulation in the refrigerator compartment produces different 2.13 Refrigeration circuit leaking refrigeration zones. 2.13.1 Intake side leaking Perishable food requires a storage temperature colder than 4 °C. To ensure that perishable food is kept as fresh as possible, this zone is If the refrigeration circuit leaks on the intake side, resulting in repairs, marked in most appliances.

  • Page 25: Small Holes In The Food Compartment Liner

    2.16 Small holes in the food compartment liner In order to guarantee that the foaming in the complete housing is free of shrink holes (no hollow air spaces), you have to care for a good air vent in the foamed space. Therefore, air vent holes of the size 0,5 to 1,0 mm must be drilled into various locations of the food compartment liner so that the air can escape during the foaming procedure.

  • Page 26: Cleaning And Caring For Stainless Steel Appliances

    2.17 Cleaning and caring for stainless steel 2.17.2 Stainless steel discoloured appliances ► The refrigerator works in Giengen have put together a cleaning and mustard care set for all stainless steel appliances. ► onions This set is also suitable for removing adhesive residue from the ►...

  • Page 27: Temperature

    2.18 Temperature The interior temperature of refrigerators and freezers is dependent on several factors. ► Appliance type ► Controller position ► Ambient temperature ► Opening of door ► Produce placed in appliance The electronically controlled appliances are an exception. These appliances are within the functional range irrespective of the ambient temperature.
  • Page 28 2.18.1 Temperature measurement Geometric centre: Temperature stratification occurs inside the appliance. Even if the appliance features an internal fan, different temperatures occur inside the appliance. To obtain comparable values, always measure the temperature of the refrigerator or freezer compartment in the geometric centre. To obtain the most accurate value, the measurement should be taken in a medium, e.g.
  • Page 29 2.18.2 Setpoint graph Due to the appliance tolerances the represented test values do not produce lines but tolerance bands. The values are determined when the appliance is in the steady state. Tolerance bands: Controller position minimum Controller position medium Controller position maximum EAN : Mean energy absorption per day RED :...
  • Page 30 2.18.3 Setpoint graph as a diagnosis aid Refrigerator compartment temperature tolerance band / Relative ON duration There is a special setpoint graph for almost every appliance. This setpoint graph has been attached to the circuit diagrams and can be found under “Graph”. The setpoint graph can be used to compare the measured temperature values (actual values) of an appliance with the setpoint values.
  • Page 31 Freezer compartment temperature tolerance band The setpoint temperature of the freezer compartment is between –10 °C and –19 °C The freezer compartment temperature is correct in this example. The measured freezer compartment temperature is –17 °C in the tolerance band (–10 °C to –19 °C) Energy absorption tolerance band The mean energy absorption per day is 0.33 –...

  • Page 32: Filler Neck On The Compressor Too Short

    2.19 Filler neck on the compressor too short On some fridge-freezers the filler necks on the compressor are pinched off ex works instead of the soldered filler pipe as is usually the case. When the refrigeration circuit is opened, the refrigeration circuit cannot therefore be filled via the filler neck, as the compressor filler pipe and the customer service filler pipe cannot be connected with a Lokring.

  • Page 33: Compressor Diagnostics

    2.20 Compressor Diagnostics The following diagnostics measures have to to considered before a compressor is exchanged. Complaint Tests Default Action Faulty temperature (too cold change compressor, check warm, fluctuations refrigeration cycle, logger measurement of temperature) Complaint Tests Default Action Check the plug connections compressor connection.
  • Page 34 Complaint Tests Default Action Look for leakages in the Change of compressor only in case of a refrigeration cycle. leakage on the low pressure side Missing inadequate ventilation cooling power. Change of compressor only in case of a Compressor runs Ca.

  • Page 35: Selection Of The Correct Lokring Connection

    2.21 Selection of the correct Lokring connection 2.22 Lokring connection - Conditions of the tubes One of the chief causes for leakages at Lokring connections are too To ensure a leakproof Lokring connection, the pipe ends must be large Lokring connecters. metallically blank.

  • Page 36: Leak In The Foam

    2.23 Leak in the foam The leakage diagnosis always requires the following measures. ► If appliance is built in – remove appliance. ► Look for oil on all solder joints and connection points. A leak in the foam can only be coded if there is no trace of oil on any connection.

  • Page 37: Cracks In The Refrigerated Food Container

    2. Oil from the inner fan: 2.25 Cracks in the refrigerated food container Vertical course under the fan (trace of oil). Three different causes of cracks are known: Procedure: Reduced amount of oil from 05.99 Molykote/ silicone lubrication from 07.99 ►...

  • Page 38: Ice And Drinking Water Have Bad Taste And Odour

    2.26.1 Sanitisation set 2.26 Ice and drinking water have bad taste and odour Mains-connected drinking water dispensers and ice makers in refrigerators can be operated without complaints even after a pro- longed idle period. A prerequisite for this is that the appliance is functioning continuously and that water from the tap connection is microbiologically perfect.
  • Page 39 2.26.2 Sanitisation liquid N O T E The liquid “HUWASAN med 2” is used for sanitisation. This solution contains 1 per cent hydrogen peroxide. Any microbiological substance in the water filter is not sufficiently removed by sanitisation The material number of the 5-litre canister is 00310550. ►...

  • Page 40: Different Compartments

    2.27 Different compartments 173_58300000002379_ara_en_j.doc – 29.04.14 Seite 40 von 41...

  • Page 41: Law Advices

    LAW ADVICES Not required 173_58300000002379_ara_en_j.doc – 29.04.14 Seite 41 von 41...

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