– 45 –
11. Remove the condenser fan assembly from the
machine compartment by grasping the upper
exterior corner and pulling the assembly out on
an angle, making sure to clear the refrigerant
tubing and condenser.
NOTE
: After installing the condenser fan assembly,
the fan blade must be installed in the proper
direction and the fan depth set at 2 mm, or
approximately 1/16 inches.
The image below shows the direction of the fan
blade and fan depth on the motor shaft. Use the
blade spring clip as a reference to the direction.
If any part of the condenser fan assembly needs
replacing, it is replaced as a whole assembly. The
only exception is the condenser fan blade. The
condenser fan blade can be ordered separately.
Compressor Combo Device
The combo device is a combination relay/overload
device. These combo devices are simply a PTC
(relay) and an overload made together and
contained in one housing.
NOTE
: The capacitor is plugged to the combo
device but is a separate part and must be ordered
separately if needed. The capacitor will be covered
in this section.
Solid State Relay
Most refrigerators use a PTC. A PTC is a Positive
Temperature Coefficient Resistor (Relay). This means
that as temperature increases, the resistance
decreases. It is simply a set of contacts pressed
against a solid state, ceramic disc.
The disc is fused with silicon and other elements
that change alignment as electricity passes through
it. The result is that as the current flows through the
PTC and heats it, the resistance of the disc instantly
changes. It goes from 4 ohms, to over 10,000 ohms
in less than a second. When the line voltage sees
this large resistance, all current flows to the run
windings, and the start windings are essentially
taken out of the electrical circuit.
Benefits over mechanical relay
:
• No moving parts
•
No contacts that "make and break"
• Insect resistant
Condenser Fan Assembly Removal continued
