SB-509-2 17
Table of contents
1 Introduction........................................................................................................................................................18
2 Safety..................................................................................................................................................................18
2.1 Authorized staff............................................................................................................................................18
2.2 Residual risks and general safety references..............................................................................................18
2.3 Safety references especially for the use in zones 1 and 2 ..........................................................................19
3 Application ranges ............................................................................................................................................19
3.1 Additional name plate ..................................................................................................................................20
3.2 Defining the zone.........................................................................................................................................20
4 Mounting ............................................................................................................................................................20
4.1 Capacity control by using solenoid coils in explosion-proof design .............................................................21
4.1.1 Retrofitting the capacity control........................................................................................................ 21
4.2 Start unloading without capacity control ......................................................................................................21
4.3 Coupling.......................................................................................................................................................21
4.4 Oil injection conversion kit for explosion-proof areas ..................................................................................22
4.5 Shaft seal.....................................................................................................................................................22
5 Electrical connection ........................................................................................................................................23
5.1 Compressor motor .......................................................................................................................................23
5.2 High and low pressure limiter (HP and LP)..................................................................................................23
5.3 Connecting a discharge gas temperature sensor ........................................................................................24
5.4 Oil flow switch ..............................................................................................................................................24
5.5 Thermostat at the ECO suction line.............................................................................................................24
5.6 Earth connection..........................................................................................................................................25
5.7 Outdoor installation......................................................................................................................................25
5.8 Schematic wiring diagrams OS.(A)74.-EX...................................................................................................26
6 Commissioning..................................................................................................................................................29
7 Maintenance.......................................................................................................................................................29
7.1 Updating a data protocol..............................................................................................................................29
7.2 Cleaning the system ....................................................................................................................................29
7.3 Checking the electrical components ............................................................................................................29
7.4 Checking the discharge gas temperature sensor and the protection device...............................................29
7.5 Elastomer elements of the coupling.............................................................................................................30
7.5.1 Checking the elastomer elements for wear...................................................................................... 30
7.6 Roller bearings and ball bearings ................................................................................................................30
7.7 Replacing the shaft seal ..............................................................................................................................31
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