Table of content
Table of content
1Preface ...............................................................................................................................................6
1.1 General guidelines ..............................................................................................................................6
1.2 Syntax..................................................................................................................................................6
1.3 Safety instructions structure................................................................................................................7
1.3.1 Safety instructions structure................................................................................................................7
1.3.2 Warning levels.....................................................................................................................................7
1.3.3 Safety symbol......................................................................................................................................8
1.3.4 Warning symbols.................................................................................................................................8
1.3.5 Imperative symbols .............................................................................................................................8
1.3.6 Information symbol..............................................................................................................................8
2General safety instructions..............................................................................................................9
2.1 Qualification of service personnel.......................................................................................................9
2.2 Dangers.............................................................................................................................................10
3Maintenance.....................................................................................................................................12
3.1 Safety check acc. to DIN VDE 0701-0702........................................................................................17
4Troubleshooting..............................................................................................................................18
4.1 General electrical faults.....................................................................................................................19
4.2 Faults of the heating system .............................................................................................................21
4.3 Faults of the cooling system..............................................................................................................23
4.4 Functional check of the cooling system ............................................................................................25
4.5 Errors in the humidification module...................................................................................................27
5Repair work at the housing............................................................................................................34
5.1 Replacing the housing cover at the lower front.................................................................................34
5.2 Replacing the pen recorder (-14P1)..................................................................................................35
5.3 Replacing the rear panel...................................................................................................................36
5.4 Replacing the silicone access port....................................................................................................37
5.5 Replacing the castors........................................................................................................................39
6Repair work at the outer door........................................................................................................41
6.1 Aligning the outer door......................................................................................................................41
6.1.1 Aligning the door hinges....................................................................................................................41
6.1.2 Aligning the adjustable door holder lug with pulley...........................................................................42
6.2 Checking and replacing outer door components ..............................................................................43
6.2.1 Dismounting the interior side of the outer door.................................................................................43
6.2.2 Replacing the door hinge cover ........................................................................................................45
6.2.3 Checking and replacing the interior side of the outer door ...............................................................46
6.2.4 Replacing the door............................................................................................................................48
6.2.5 Replacing the door contact switch (-3S1 ) ........................................................................................49
6.2.6 Replacing the outer door gasket.......................................................................................................50
6.3 Replacing the triangle instrument box...............................................................................................51
6.3.1 Dismantling the instrument box.........................................................................................................51
6.3.2 Replacing of components of the triangle instrument box..................................................................52
6.4 Replacing the closing device of the outer door.................................................................................54
7Repair work at the inner and outer chamber................................................................................56
7.1 Replacing the glass door...................................................................................................................56
7.2 Replacing the closing device of the glass door.................................................................................57
7.3 Replacing the glass door gasket.......................................................................................................58
7.4 Replacing the fan (-4M1)...................................................................................................................59
7.5 Replacing the frame gasket ..............................................................................................................62
7.6 Checking and replacing the frame heating wire (-4E3 )....................................................................63
7.7 Replacing the inner chamber and the gaskets between the inner and the outer chamber ..............64
7.8 Testing and replacing the heating element (-4E1) ............................................................................66
7.9 Checking and replacing the inner chamber Pt 100 temperature sensor (-3B1)................................69
7.10 Checking and replacing the humidity sensor and the sensor board (-3B2)......................................71
7.11 Replacing the temperature fuse 110°C / 230°F (-1F2)......................................................................74
8Repair work at electric and electronic components....................................................................75
8.1 Activating and replacing the miniature circuit breaker (-1F1) ...........................................................76
4 Service Manual KBF (E5.2) 04-2015
