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6720649497 SM HP270-1 2012/09 en
1.
INTRODUCTION ............................................................................................ 3
1.1
G
ENERAL DESCRIPTION
............................................................................................................ 4
1.2
P
RODUCT PRESENTATION
......................................................................................................... 5
1.3
W
ORKING PRINCIPLE
................................................................................................................ 6
2.
HEAT PUMP ELEMENTS .............................................................................. 7
2.1
A
NODE
P
ROTECTION
................................................................................................................ 8
2.2
E
LECTRICAL
R
ESISTANCE AND
T
HERMOSTAT
........................................................................... 10
2.3
C
OIL FOR EXTERNAL SOURCE OF ENERGY
................................................................................ 12
3.
MODULE ...................................................................................................... 12
3.1
C
OMPONENTS AND
C
HECKS IN THE
R
EFRIGERATION
U
NIT
......................................................... 13
3.2
C
OMPONENTS
S
YSTEM
........................................................................................................... 14
3.3
M
AIN
C
OMPONENTS
D
ATA
...................................................................................................... 17
3.4
E
LECTRICAL
M
EASUREMENTS
................................................................................................. 19
4.
COMPONENTS OVERVIEW ........................................................................ 23
4.1
C
OMPRESSOR
........................................................................................................................ 23
4.2
F
ILTERS AND DRIERS
.............................................................................................................. 27
4.3
E
XPANSION VALVE
................................................................................................................. 27
4.4
P
RESSURE CONTROL BY NORMALLY CLOSED PRESSURE SWITCH
............................................... 28
4.5
E
VAPORATOR
........................................................................................................................ 29
4.6
C
ONDENSER
.......................................................................................................................... 30
5.
HUMAN MACHINE INTERFACE – HMI ....................................................... 31
6.
MAINTENANCE AND PREVENTIVE ACTIONS .......................................... 37
6.1
C
ORROSION
........................................................................................................................... 37
6.2
W
ATER QUALITY
.................................................................................................................... 37
6.3
T
YPES OF SCALE
.................................................................................................................... 39
6.4
M
AINTENANCE ACTIVITIES FOR TECHNICIANS
............................................................................ 40
7.
TROUBLESHOOTING .................................................................................. 47
7.1
F
AILURES PREVENTION AND DETECTION
................................................................................... 50
7.2
E
VAPORATOR UNDER PERFORMANCE
...................................................................................... 51
7.3
C
ONDENSER UNDER PERFORMANCE
........................................................................................ 52
7.4
O
THER RECOMMENDATIONS AND DEFINITIONS
.......................................................................... 53
7.5
S
ERVICE
N
EEDS
..................................................................................................................... 54
7.6
T
ERMINOLOGY
....................................................................................................................... 55
8.
APPENDIX .................................................................................................... 59