Table of Contents
Advertisement
Repair manual - Refrigeration
Flow noise..................................................................................................... 35
Clicking sounds ............................................................................................. 36
Swishing noises............................................................................................. 36
Vibration noises............................................................................................. 36
Injection noises on the evaporator .................................................................. 37
Abnormal noises............................................................................................ 37
Excessive noise measured by customer using smartphone app ....................... 38
Odour ........................................................................................................... 39
Typical plastic smell....................................................................................... 39
Strong smell of food....................................................................................... 39
Musty smell in case of prolonged periods being out of operation ...................... 40
Off-odors coming from the appliance exterior .................................................. 40
Result problem .............................................................................................. 41
Drinking water tastes stale ............................................................................. 41
Temperature problem .................................................................................... 41
Complete over icing of the evaporator............................................................. 41
Icing up / condensation on side panels............................................................ 42
Build-up of ice at a single point ....................................................................... 42
Icing up on input of evaporator ....................................................................... 43
Frost on dryer................................................................................................ 44
Frost on suction pipe ..................................................................................... 45
Icing up on no-frost evaporator ....................................................................... 45
Measuring technology....................................................................... 46
6.1 Measuring temperature inside the appliance ................................................... 46
6.1.1
Temperature measurement with data logger ....................................... 46
6.1.2
Temperature measurement without data logger .................................. 47
6.2 Nominal temperature graph............................................................................ 48
6.4 Measuring energy consumption...................................................................... 49
Test........................................................................................................... 50
7.1 Performing customer service test program ...................................................... 50
7.2 Tracing leakage in refrigeration circuit............................................................. 51
7.3 Checking compressor (quick test)................................................................... 52
7.3.1
Checking compressor input current .................................................... 52
2020-08-03_58300000002379_ara_en_p
7.3.2
7.3.3
7.4 Checking stop valve ................................................................................... . .... 53
7.4.1
7.4.2
7.4.3
7.4.4
Repair....................................................................................................... 54
8.1 Inside Lokring technology ........................................................................... . .... 54
8.1.1
8.1.2
8.1.3
8.1.4
8.1.5
8.1.6
8.1.7
8.1.8
8.1.9
8.1.10 Connecting capillary tube ............................................................... . .... 56
8.1.11 Connecting dryer and capillary tube................................................ . .... 56
8.1.12 Connecting aluminium and copper pipes......................................... . .... 57
8.1.13 Making one-sided pressed connection ............................................ . .... 57
8.1.14 Installing NTR connection (Y-pipe) (part 1)...................................... . .... 57
8.1.15 Installing NTR connection (Y-pipe) (part 2)...................................... . .... 57
8.1.16 Connecting T-piece with Schrader valve ......................................... . .... 58
8.1.17 Repairing too short compressor tube .............................................. . .... 58
8.2 Rinsing refrigeration circuit ......................................................................... . .... 59
8.3 Repairing refrigeration circuit (R600a) ......................................................... . .... 60
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.4 Repairing refrigeration circuit (R134a) ......................................................... . .... 64
8.4.1
8.4.2
Copyright by BSH Hausgeräte GmbH
Checking speed on the inverter module .......................................... . .... 52
Checking resistance values of compressor motor windings .............. . .... 52
Checking stop valve for leaks ......................................................... . .... 53
Checking stop valve function .......................................................... . .... 53
Measuring stop valve power consumption ....................................... . .... 53
Measuring suction pressure ........................................................... . .... 53
Hints for Lokring installation ........................................................... . .... 54
Using Lokring pliers ....................................................................... . .... 54
Handling Lokring pliers with two pivots............................................ . .... 54
Changing Lokring pliers jaw ........................................................... . .... 55
Selecting correct Lokring................................................................ . .... 55
Using Lokprep ............................................................................... . .... 55
Using capillary tube pliers .............................................................. . .... 55
Checking dryer capsule ................................................................. . .... 56
Installing reducing connector .......................................................... . .... 56
Replacing dryer and compressor .................................................... . .... 60
Disposing compressor oil ............................................................... . .... 61
Preparing refrigerant (R600a)......................................................... . .... 61
Evacuating refrigeration circuit (R600a) .......................................... . .... 61
Filling refrigeration circuit (R600a) .................................................. . .... 63
Replacing dryer and compressor .................................................... . .... 64
Disposing compressor oil ............................................................... . .... 65
Page 2 of 73
Advertisement
Table of Contents
