Start Relay; Overload Protector - Vinotemp WINE-MATE VINO3500HZD Service Manual

5. Set the voltmeter to the AC 200 scale.
6. Touch and hold one voltmeter probe to the terminal on the start relay, then
touch and hold the other probe to the terminal on the overload protector.
7. The voltmeter shall show a reading of 115 volts.
8. If the test is good and the compressor does not start, check the start relay,
overload protector, and measure the resistance.

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

Figure 3-3
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