M07J40G8-00
21/07/08
page 37
COMPRESSOR PROTECTION
1.
Identify the part on the wiring diagram
2.
Loose electric contacts/terminals, leads broken
3.
electrical windings interrupted
4.
Vacuum power voltage below the limits
5.
power contactors / contacts defective
6.
start-up power voltage lower than the limits
7.
electrical absorption high / unbalanced
8.
High compressor discharge temperature >
thermostatic device needs calibrating, insufficient
refrigerant charge
FAN PROTECTION
1.
Identify the part on the wiring diagram
2.
fan mechanically jammed, bearings / drive belt (if
present)
3.
Loose electric contacts/terminals, leads broken
4.
electrical windings of fan interrupted
5.
power supply voltage below limits
6.
electrical absorption high / unbalanced
PUMP PROTECTION
1.
Identify the part on the wiring diagram
2.
pump jammed (probable for circulator pump after
lengthy seasonal shutdowns)
3.
Loose electric contacts/terminals, leads broken
4.
electrical windings of fan interrupted
5.
power supply voltage below limits
6.
electrical absorption high / unbalanced
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