28 Best Maintenance Questions and Answers (Q&A) - ProProfs Discuss

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How many 4 inch x 4 inch ceramic tiles would it take to cover a 120 square foot area?

W. Wright, Biology student
Answered: Mar 07, 2019

There are 12 inches in a foot, since the tiles are 4 inches on each side. It will take 3 tiles to get a foot. Therefore it will take 9 (3*3) tiles to make a square foot. Since you ne...Read More

3 Answers

2338 views

What is one purpose of shutoff valves on the compressor during installation and when servicing?

Chris Kenway, Content Writer
Answered: Oct 10, 2018

Due to safety reasons, many appliances and machines have an emergency shutoff valves in case there is a problem. For instance, at a gas station, there is a shutoff valve in the store where the...Read More

4 Answers

1197 views

What color is a hot wire on a 110-volt circuit?

Bobby Rickets, Content Reviewer
Answered: Jun 20, 2019

The correct answer to this question is Black, or Red. All line voltage has three conductors. One of those three is the hot wire. It is used to provide a 120 VAC current source. The other three...Read More

3 Answers

1121 views

What will be the approximate gauge pressure on the low side of a newer model heat pump if the unit is properly charged on a 95 degree day?

C. Perez, Writer
Answered: Apr 24, 2019

The correct answer to this question is D, 70-75. A heat pump is a device which has the ability to transfer heat energy to a heat sink. The pump does this by moving heat from absorbing heat from a...Read More

2 Answers

1015 views

How is the hot wire normally on a 110-volt circuit?

Gelliott
Answered: Aug 07, 2019

Hot wire on 110 volt circuit is black of red

2 Answers

921 views

Which appliance would you find a hot wire relay on?

Gelliott
Answered: Aug 07, 2019

Hot wire relay is found on a stove

2 Answers

889 views

What kind of freon would you suggest for use in an apartment freezer?

Gelliott
Answered: Aug 07, 2019

R-12 is mo longer available

so R-22

2 Answers

775 views

May quality of tools reflect the quality of work?

John Adney
Answered: Oct 17, 2017

I have seen quality results from handmade tools. I can drill a decent hole with a old hand drill, that may not appear to be the same quality as a $250 electric drill. Although I do believe that...Read More

2 Answers

658 views

Which side is the condenser a part of?

M. Kennedy, Web Content Writer
Answered: Sep 18, 2018

A Heating Ventilating Air Conditioning System, known as HVAC, uses a condenser to precipitate steam vapors into a liquid. As shown in the picture above, steam enters the top of the vessel, passes...Read More

4 Answers

647 views

What is the best way to check the seal on an oven door?

John F. connor, Content Marketing executive
Answered: Feb 07, 2019

To check the seal on an oven door, the best way is to place a sheet of paper between the door and the oven. Close the paper and try to pull out the paper from the door. if you are able to pull...Read More

3 Answers

600 views

What is the probable cause if a dishwasher hums, but the motor will not run?

Wyatt Williams
Answered: Apr 25, 2024

The seal is frozen

1 Answer

552 views

What is the purpose of a 3-way switch?

H. Jones, Web Content Writer
Answered: Oct 10, 2018

In regards to electricity, many people have two switches in some of their rooms that are used often. For example, in a dining room or living room where there are two doors or pathways into the...Read More

2 Answers

550 views

What should you do as the hot water heater rank is being filled up?

J.Barbara
Answered: Feb 16, 2018

If you are installing a hot water heater or perhaps refilling it for some reason as the tank fills with water you should purge the tank of any air that is in it. This will prevent air getting...Read More

3 Answers

503 views

Why should you pull a vacuum?

D.Anthonyda
Answered: Feb 06, 2018

The only answer that is correct here is remove impurities. Pulling a vacuum, for those who don’t know, is a term in mechanics. It simply means that one has removed all the fluids and has...Read More

2 Answers

481 views

Why should you pull a vacuum?

Patrick.nashtn
Answered: May 05, 2020

Before a vacuum is pulled, the leak test should have already been done. When the lines are brazed, there will be contaminants to form and must be removed. After this is done, the nitrogen is then...Read More

2 Answers

438 views

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