Danfoss BOCK UL-HGX44e Operating Manual page 3

Contents
4 Compressor assembly ................................................................................................... 10
4.1 Storage and transport ...................................................................................................... 10
4.2 Setting up ........................................................................................................................ 10
4.3 Pipe connections .............................................................................................................. 11
4.4 Pipes ................................................................................................................................ 11
4.5 Laying suction and pressure lines .................................................................................... 11
4.6 Operating the shut-off valves ........................................................................................... 12
4.7 Operating mode of the lockable service connections ....................................................... 13
4.8 Suction pipe filter and filter drier ...................................................................................... 13
5 Electrical connection .................................................................................................... 14
5.1 General safety .................................................................................................................. 14
5.2 Information for contactor and motor contactor selection .................................................. 14
5.3 Standard motor design for direct or part winding start..................................................... 14
5.4 Basic circuit diagramm for part winding start with standard motor .................................. 16
5.5 Special motor: design for direct or star-delta start ........................................................... 18
5.6 Basic circuit diagramm for star-delta start with special motor ......................................... 20
5.7 Electronic trigger unit INT69 G ......................................................................................... 22
5.8 Connection of the trigger unit INT69 G ............................................................................. 22
5.9 Function test of the trigger unit INT69 G .......................................................................... 23
5.10 Oil sump heater (accessories) .......................................................................................... 23
5.11 Capacity regulator (accessories) ...................................................................................... 23
5.12 Selection and operation of compressors with frequency converters................................. 24
6 Commissioning .............................................................................................................. 24
6.1 Preparations for start-up .................................................................................................. 24
6.2 Pressure integrity test ...................................................................................................... 24
6.3 Leak test .......................................................................................................................... 24
6.4 Evacuation ....................................................................................................................... 24
6.5 Refrigerant charge ........................................................................................................... 25
6.6 Start-up ........................................................................................................................... 25
6.7 Avoiding slugging ............................................................................................................. 25
6.8 Connection of oil level regulator ....................................................................................... 26
7 Maintenance .................................................................................................................. 27
7.1 Preparation ...................................................................................................................... 27
7.2 Work to be carried out ..................................................................................................... 27
7.3 Spare parts recommendation/accessories ....................................................................... 27
7.4 Lubricants / oils ............................................................................................................... 27
7.5 Decommissioning ............................................................................................................ 27
8 Accessories .................................................................................................................... 28
8.1 Capacity regulator. ........................................................................................................... 28
9 Technical data................................................................................................................ 30
10 Dimensions and connections ....................................................................................... 32
11 Declaration of incorporation ......................................................................................... 34
12 UL-Certificate of Compliance........................................................................................ 36
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