2023 Variable Frequency Drive Day 1 Quiz

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Question 1 of 10

1. Question

What 2 fan speeds and Hertz will a SAV unit operate at?

50% / 30hz and 100% / 60hz
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66% / 40hz and 100% / 60hz
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70% / 40hz and 100% / 60hz
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100% / 100hz
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Question 2 of 10

2. Question

All SAV units have 2 compressors? True or False

True
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False
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Question 3 of 10

3. Question

All units that have a VFD will always come with a keypad to control the VFD?

All new RTU's come with a keypad for the VFD
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ONLY LC series units will come with a keypad for the VFD
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Only the new EcoBlue units come with a keypad for the VFD
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Question 4 of 10

4. Question

Motors controlled by a VFD are DC voltage motors?

True
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False
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Question 5 of 10

5. Question

How does the VFD get it’s signal to tell the blower motor what speed to operate at?

The IGC board
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The signal from the thermostat
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Fan speed relay board
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It is based on the cooling/heating demand
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Question 6 of 10

6. Question

On the Fan Speed Relay Board, what are the “J1” inputs?

24vdc inputs from the thermostat
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24vac inputs from the thermostat
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24vdc outputs to the thermostat
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24vac outputs to the thermostat
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Question 7 of 10

7. Question

“JW1” and “JW2” jumpers on the fan speed relay board must always stay intact and never be cut? True or False

True
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False
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Question 8 of 10

8. Question

A “Fan only” call from the thermostat will operate the blower at what speed?

30%
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45%
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50%
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66%
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Question 9 of 10

9. Question

The AEGIS grounding ring is always external of the motor? True or False

True
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False
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Question 10 of 10

10. Question

When ordering a replacement motor on a SAV unit__________.

As long as the HP, Voltage and RPMS match, it's OK
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Should always be ordered as OEM as they are special motors
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Will be OK as long as the specs are close to the original motor
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Any ECM Motor will work
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