Vinotemp WINE-MATE VINO3500HZD, Service Manual

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3) Start Relay
A start relay’s function is to energize and de-energize the compressor’s start
winding. The coil of the current type relay is connected in series with the run
winding. When current flows through the coil, a magnetic force is produced,
pulling the relay plunger up. With the relay plunger up, it connect the start
winding and the run winding at the same time and the compressor starts. As the
compressor reaches its running speed, there is not enough current flowing
through the relay coil to keep the plunger up (because of gravity), the start
winding is disconnected.
1. Unplug the WINEMATE cooling unit or disconnect power.
2. Remove the terminal cover from the compressor.
3. Disconnect and remove the relay.
4. Set the ohmmeter scale to the lowest setting.
5. Make sure the relay with the letters “TOP” facing up.
6. Place and hold one ohmmeter probe in one terminal, then place the other
ohmmeter probe into the other terminal. The ohmmeter shall show an
open circuit. If not, the start relay is bad and needs replacing.
7. Turn the relay upside down.
8. Place and hold the ohmmeter probe in one terminal, and place the other
ohmmeter probe in the other terminal. The ohmmeter shall show zero
resistance. If not, the start relay is bad and needs replacing.
9. If the start relay is good, reinstall and reconnect the relay with the letters
“TOP” facing up.
4) Overload Protector
The overload protector is a bi-metal that protects the compressor. If the
compressor gets too hot the overload protector opens and stops the compressor.
Once it has cooled the overload protector contacts close.
1. Unplug WINEMATE cooling unit or disconnect power.
2. Remove the terminal cover from the compressor.
3. Disconnect and remove the overload protector
4. Set the ohmmeter scale to the lowest setting.
5. Touch and hold one ohmmeter probe to one terminal on the overload
protector, then touch and hold the other probe to the other terminal.
6. The ohmmeter shall show a reading of zero resistance. If not, the overload
protector needs replacing.
7. Reinstall and reconnect the overload protector.
5) Temperature Controller
The temperature controller allows the customer to select a temperature form 50
°
F to 65
°
F. When the thermistor senses a temperature above the setting value,