Specifications
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6720649497 SM HP270-1 2012/09 en
1. INTRODUCTION ............................................................................................ 3
1.1 GENERAL DESCRIPTION ............................................................................................................ 4
1.2 PRODUCT PRESENTATION ......................................................................................................... 5
1.3 WORKING PRINCIPLE ................................................................................................................ 6
2. HEAT PUMP ELEMENTS .............................................................................. 7
2.1 ANODE PROTECTION ................................................................................................................ 8
2.2 ELECTRICAL RESISTANCE AND THERMOSTAT ........................................................................... 10
2.3 COIL FOR EXTERNAL SOURCE OF ENERGY ................................................................................ 12
3. MODULE ...................................................................................................... 12
3.1 COMPONENTS AND CHECKS IN THE REFRIGERATION UNIT ......................................................... 13
3.2 COMPONENTS SYSTEM ........................................................................................................... 14
3.3 MAIN COMPONENTS DATA ...................................................................................................... 17
3.4 ELECTRICAL MEASUREMENTS ................................................................................................. 19
4. COMPONENTS OVERVIEW ........................................................................ 23
4.1 COMPRESSOR ........................................................................................................................ 23
4.2 FILTERS AND DRIERS .............................................................................................................. 27
4.3 EXPANSION VALVE ................................................................................................................. 27
4.4 PRESSURE CONTROL BY NORMALLY CLOSED PRESSURE SWITCH ............................................... 28
4.5 EVAPORATOR ........................................................................................................................ 29
4.6 CONDENSER .......................................................................................................................... 30
5. HUMAN MACHINE INTERFACE – HMI ....................................................... 31
6. MAINTENANCE AND PREVENTIVE ACTIONS .......................................... 37
6.1 CORROSION ........................................................................................................................... 37
6.2 WATER QUALITY .................................................................................................................... 37
6.3 TYPES OF SCALE .................................................................................................................... 39
6.4 MAINTENANCE ACTIVITIES FOR TECHNICIANS ............................................................................ 40
7. TROUBLESHOOTING .................................................................................. 47
7.1 FAILURES PREVENTION AND DETECTION ................................................................................... 50
7.2 EVAPORATOR UNDER PERFORMANCE ...................................................................................... 51
7.3 CONDENSER UNDER PERFORMANCE ........................................................................................ 52
7.4 OTHER RECOMMENDATIONS AND DEFINITIONS .......................................................................... 53
7.5 SERVICE NEEDS ..................................................................................................................... 54
7.6 TERMINOLOGY ....................................................................................................................... 55
8. APPENDIX .................................................................................................... 59