C - Electrical Components / Operation; Electrical Grounding; Compressor Electrical Components And Circuits; Solid State Relay - Electrolux Wine Cooler & Beverage Center Service Manual

12

C - Electrical Components / Operation

Electrical Grounding

All refrigerators are equipped with a power supply
cord incorporating a three-prong grounding
plug and a ground wire which is attached to the
refrigerator cabinet for protection against shock
hazard. Each electrical component is either cabinet
mounted or connected through a ground wire
to the cabinet to complete the ground. Certain
components, such as defrost timers, may be
double insulated and do not require a ground wire.
Ensure the electrical wall receptacle is of the three
prong type and is properly grounded in accordance
with the National Electrical Code and/or local
codes.
Compressor Electrical
Components and Circuits
The new series of very high efficiency compres-
sor is equipped with all new electrical components
consisting of a solid state PTC relay with a thermal-
ly operated overload protector, and a run capacitor.
See Figure C1.
Condenser
Fan Blade
Hot Lube Tube
Condenser
Grommet
Figure C1
Shroud
Condenser Fan Motor
Bracket
Shroud
Compressor
Support
Clip
Clip
Grommet
Compressor Base

Solid State Relay

The solid state relay has no moving parts. It
consists of a PTC resistor mounted in a plastic
case with appropriate terminals. PTC (Positive
Temperature Coefficient) simply denotes a resistor
which increases in resistance as its temperature is
increased. The self-heating PTC resistor used in
the solid state relay has the unique characteristic
of changing from low to very high resistance very
abruptly, thus serving as an on-off switch. (See
Figure C3.)
The solid state relay plugs directly onto the
compressor start and run terminals. (See Figure 2.)
Relay terminals 1, 2, and 5 are connected within
the relay, as are terminals 3 and 6.
A run capacitor is connected to relay terminals
2 and 3, so it is connected in parallel with the
PTC resistor. One side of the 120 VAC power is
connected to relay terminal 1. The other side of line
is connected to the overload protector. (See figure
C3.)
Drier-Filter
PTC Starter
Run Capacitor
NOTE
There are 2 exploded views (Cabinet and
System) at the end of this section to assist you in
troubleshooting.
Figure C2
Figure C3