Dishwashers - Water Heaters - 25 Questions
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- 1.
What is the best method to check the working condition of a wax motor?- A.
Isolate and check for less than 1 ohm
- B.
Isolate and check for infinite ohms
- C.
Apply power or check for power
- D.
Check the current draw and look for less than 2 amps
- 2.What is the correct water temperature that should be coming into the dishwasher?
- A.
90 degrees Fahrenheit
- B.
120 degrees Fahrenheit
- C.
150 degrees Fahrenheit
- D.
212 degrees Fahrenheit
- 3.When connecting the fill line to a dishwasher inlet, what is the MINIMUM size that the fill line can be?
- A.
1/4 inch
- B.
3/8 inch
- C.
1/2 inch
- D.
Doesn't matter, any size will work
- 4.
What is the function of the turbidity sensor?
- A.
To regulate the water level
- B.
To regulate when the soap dispenser will open
- C.
To check if the filter in the pump needs cleaned
- D.
To check the clarity of the water
- 5.All dishwashers must be hard wired.
- A.
True
- B.
False
- 6.What is the most accurate way to check if the spray arms are working in a dishwasher?
- A.
Check the water pressure going into the dishwasher
- B.
Uninstall the spray arms and run water through them under a sink faucet
- C.
Check for voltage at the inlet valve
- D.
Place 4 cups in each corner of the top rack and see if the cups fill up with water
- 7.What is the purpose of adding rinse aid in a dishwasher?
- A.
Ensures the dishes come out clean
- B.
Prevents spots on dishes and causes the water to run off
- C.
Prevents rust from forming inside the dishwasher
- D.
Used to clean out the main pump of debris
- 8.Regardless of the customer complaint, when servicing a dishwasher, the first thing you should check:
- A.
Let the customer know they should have bought a better brand
- B.
Check the breaker box for any issues
- C.
Remove the garbage disposal to better access the dishwasher
- D.
Remove the kick-plate and check the installation while looking for any leaks.
- 9.All dishwashers need _________ in the drain hose.
- A.
A drain loop
- B.
A length of at least 5 feet
- C.
A turbidity sensor
- D.
To be secured using duct tape around and
- 10.Soap suds will cause what common customer complaint?
- A.
Dishwasher will not dry
- B.
Dishwasher will do nothing
- C.
Dishwasher will not drain and leaking out the front
- D.
Dishes have spots
- 11.What can cause the thermal fuse to open near the main control near the dishwasher?
- A.
Customer set the controls incorrectly
- B.
An issue with the installation
- C.
Drain pump is clogged with debris
- D.
Spray arms cannot spin due to the way the customer loads the dishwasher
- 12.If the drain loop has been removed from the drain hose, what is the most common customer complaint?
- A.
The dishwasher will not do anything
- B.
The dishwasher is very noisy and loud
- C.
The dishes are not drying
- D.
The dishes are not coming clean.
- 13.If the customer complaint is that the dishwasher is not doing anything, what is the FIRST thing you should check?
- A.
Wax motor
- B.
Power junction box
- C.
Thermal fuse
- D.
Door switches
- 14.The heating element in a dishwasher, when isolated, should have how many ohms?
- A.
3 - 4
- B.
10 - 50
- C.
100 - 200
- D.
1000 - 1100
- 15.What is the ideal water pressure going to the dishwasher inlet valve?
- A.
20 - 30 psi
- B.
40 - 60 psi
- C.
80 - 100 psi
- D.
110 - 130 psi
- 16.
This picture of an appliance is NOT a dishwasher.
- A.
True
- B.
False
- 17.
What is the correct way to check this 3-phase motor in a washer?
- A.
Connect 120 volts to terminals 4 and 5. If the motor starts, it's good.
- B.
Isolate the motor and check for resistance between any two pair of winding terminals, one should be infinite and the other should read less than 1 ohm - spin the shaft the ensure bearings are good
- C.
Isolate the motor and check for resistance between any two pair of winding terminals, should have the same ohm reading - spin the shaft the ensure bearings are good
- D.
There is no way to check this 3-phase motor
- 18.A microwave that doesn't heat but draws 1 amp or less
- A.
Most likely has a problem in the high voltage.
- B.
Has a shorted diode.
- C.
Has an open capacitor.
- D.
Has no power to the high voltage transformer.
- 19.What is the main purpose of the rps sensor or hall sensor in a washer?
- A.
To sense the water level
- B.
To sense if the door/lid is locked
- C.
To sense if the unit is level
- D.
To sense the movement of the inner basket
- 20.What is the purpose of a the magnesium rod in a hot water tank?
- A.
To remove minerals from the customers water
- B.
To heat up the water to a proper temperature
- C.
To ensure the hot and cold water stay separated
- D.
Prevents the water tank from leaking
- 21.What does the TP stand for in a T&P valve?
- A.
Temperature and pipes
- B.
Time and pressure
- C.
Temperature and pressure
- D.
Tension and pressure
- 22.The customer complaint is their shower faucet keeps getting clogged up with little plastic pieces, what is the most likely cause?
- A.
The internal plumbing is rotting away
- B.
Customer forgot to pay water bill
- C.
The dryer vent is clogged with lint
- D.
The dip tube in their water heater has broken down
- 23.Instant Hots are made primarily by one company. What is the name of the company?
- A.
GE
- B.
Rheem
- C.
Insinkerator
- D.
Kitchenaid
- 24.The customer complaint on a 5-year-old garbage compactor is that the drawer won't open, what is the MOST LIKELY problem?
- A.
The drawer is jammed with debris.
- B.
The motor has failed.
- C.
The drawer needs some WD-40.
- D.
The compactor is not installed correctly.
- 25.When using a garbage disposal, a customer can feel confident to put any type of item, whether its food or garbage, in their sink.
- A.
True
- B.
False
Questions: 10 | Attempts: 62322 | Last updated: Mar 22, 2022
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