Questions tagged [compressor]

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21
votes
5answers
73k views

Should I release the pressure out of an air compressor when it is not in use?

Just got a new compressor and I wondering if I should be releasing all of the pressure out of the unit when it is not in use? Or is it better to leave the pressure in so that the unit does not have ...
12
votes
5answers
17k views

Should I leave the drain open on my compressor for storage?

I just got a new air compressor for occasional finish nailing and tire inflation. I understand that I need to open the bottom drain to let out any condensation (i.e., this question) after each use. ...
11
votes
8answers
351k views

What's the minimum recommended compressor HP/PSI to spray paint?

I have a little compressor that I use for a small brad nailer and blowing up tires. Is there a minimum PSI or horsepower that I need to be able to get to in order to spray paint with it?
7
votes
6answers
92k views

Prevent air leaking from couplings on an air compressor hose

I recently purchased an air compressor. When I turn it on without a hose attached, it seems to work fine. It gets up to 140 PSI and shuts off the motor. As soon as I attach the hose, I can't get ...
7
votes
10answers
6k views

Time to Replace Central AC?

Have a 2004, Rheem, Model #: RAMC-048JBZ; R-22 refrigerant. We live in Central Texas, very hot 5 months a year, we use the AC probably 7/8 months a year. Have had annual maintenance performed since ...
6
votes
4answers
17k views

How do you break in a new air compressor?

Just got a new craftsman air compressor (33 gal). I have read that it is important to "break in" the unit by running it with the pressurized chamber open (so that there is no load on the motor). How ...
5
votes
3answers
1k views

Can I use a nailer with a higher consumption than my compressor's SCFM rating?

Can I run a pneumatic nail gun with a consumption of 4 SCFM max on a small portable 1HP compressor with a SCFM rating of about 3 SCFM @ 90psi? What about tools that with higher SCFM consumption say 5 ...
5
votes
5answers
23k views

Which pipe to use to top-up refrigerant in a freezer?

My freezer is apparently slowly leaking refrigerant. I sent it in for repairs a few years back, but now it is failing with the exactly the same symptoms: compressor working non-stop, temperature never ...
4
votes
3answers
2k views

Is it normal for an air compressor's tank to have something inside it?

I recently bought an air compressor for airbrushing and other uses. I'm not familiar with air compressors so I was wondering if it was normal for the air tank to have sand/gravel inside it? When I ...
4
votes
1answer
58 views

Inserting a Tee In 1" Pipe for an Air Compressor?

I have a copper pipe outside my house that is 1" in diameter (Measured 1.1 inches using a digital caliper) that feeds our house's sprinkler system. My dad uses his commercial air compressor to clear ...
4
votes
1answer
688 views

Is it safe to mount a medium-sized air compressor to the floor to stop or limit vibrations?

I have a 220V 6hp 33gal oil-less horizontal air compressor that aside from being noisy rattles all over the floor. Stock Image: I would like to either mount it to the floor or build a small frame/...
3
votes
6answers
25k views

Where can I get an air compressor that can blow air (not just inflate tires)?

I have been able to find this and this, but they don't come with the fitting/handle that allows you to blow air - for instance, if you want to blow dust from your keyboard, etc. Does anyone know ...
3
votes
2answers
542 views

HVAC is suddenly blowing room temperature air—compressor, fan still turn on

I intend to call a repair person, but I just want to make I've exhausted possibilities that don't involve messing with the refrigerant lines. The A/C was working yesterday with no problems (outdoor ...
3
votes
2answers
312 views

15-year-old fridge goes “clunk” at end of cycle

Started happening a few years ago, unclear whether it has gotten any louder or whether there's anything that makes it better or worse. I don't think it was this bad when new, though. Functionally, ...
3
votes
2answers
2k views

How do I increase the volume of air going into my lawn sprinkler zones to blow out water for the winter?

I have a 13 Gallon tank in my compressor. I can get the pressure up to over 100 PSI, but when I allow air to flow into individual sprinkler zones, the pressure at my manifold reads only about 10-15 ...
3
votes
3answers
116 views

Help diagnose a compressor problem

My fan on my A/C compressor unit seems to start and even spins up to a reasonable speed, although not quite the speed at which it ought to spin, but then 5 seconds later slows down to a very low speed ...
3
votes
1answer
331 views

What type of air hose should I use?

I have the compressor which can be seen below and I would like to connect one of the the two Alligator Compressor Nipples. Question Will the hose work with the first nipple? Does there exist a ...
2
votes
2answers
3k views

Can a window A/C unit be installed on its side? [closed]

I have a very small window (narrow) Can you install an A/C on it's side and run or will it burn up the compressor? Thanks Jerry
2
votes
3answers
119 views

Switching power to an air compressor

I have an air compressor for running tools in my garage. I recently moved the compressor to the basement and put an accumulator tank in the garage ceiling. I did this to reduce noise in the garage ...
2
votes
2answers
449 views

Shouldn't a compressor automatically stop compressing on a predefined PSI level?

I just received a new E.C.SMART 25/2500 DARI compressor. It came without any owner manual, and I couldn't find a manual on the net. When I turn it on, the main PSI level goes to the red zone and doesn'...
2
votes
3answers
159 views

Can I upsize my air conditioner if I have a two-speed compressor?

The upper floor of my house has a split A/C, three-ton. When the temperature gets up above about 95 Fahrenheit, the unit can't keep the upstairs cool. That means that for a few weeks a year, my kids'...
2
votes
3answers
1k views

What size air hose would a mechanic's garage require?

I'm looking for a retractable air hose for my husband as a birthday present...he is an airplane mechanic and has many air tools, also has a large air compressor already (not sure of the hp, but it is ...
2
votes
2answers
180 views

Can I use this hose with my air compressor?

I have the below compressor, and would like to use it for pumping my bike. Does the below hose and gun work with it? And what is the metal button at the end of the gun for?
2
votes
1answer
1k views

How can I replace a NEMA 6-30 cord & plug with a NEMA 14-30 cord & plug?

I recently purchased a used SA-6E compressor from a dive shop I work with. I had to switch out the NEMA 6-30 plug to a NEMA 14-30. This was done with a complete new plug and cable. I connected the ...
2
votes
1answer
2k views

Which way should the water separator be fitted to an air compressor?

I bought a water separation filter for my new compressor. The water separator didn't come with any good documentation. Here's what came in the pack: A diagram on the packaging: The device: The ...
2
votes
3answers
21k views

Temporary fix for bad contactor?

After doing some replacement for the ac, the contactor stopped working. It won't close when I turn the ac on. when I pushed it in, the compressor was able to start. I can't go out to find a new one ...
2
votes
2answers
1k views

Emerson Liebert Air Conditioner Fan Runs Abnormal

We have 2 Emerson Liebert air conditioners inside a datacenter. Issue is not a home issue but devices are all same and I supposed finding some expert here. Here is the thing: This 2 devices are ...
2
votes
1answer
72 views

How much usable air in an air compressor?

I'm trying to figure out how long a small 3 Gallon compressor tank will last in between the compressor kicking on and off. I know the tank volume, and cut-in/cut-out PSI, and my approximate SCF usage ...
2
votes
1answer
7k views

How do I estimate the energy consumption of a ductless mini-split A/C unit?

I'm designing a "solar RV" built from a cargo trailer with PV panels mounted on the roof. Currently, I'm listing the expected electrical loads so I can size the solar system and battery bank ...
2
votes
2answers
37k views

Does a compressor with a short to ground really require a complete system replacement?

My 24 year old home A\C went out some time Sunday morning. I had a tech come out and look at it, and was told that the compressor is shorted to ground, and that this means I have to replace the entire ...
1
vote
2answers
70 views

Should HVAC registers be closed or open when HVAC is broken, & window AC units are in use?

The property in question in located in a hot climate, with high-90's being regular during the summer. The compressor has died on the property's HVAC, and for the time being, the space will be cooled ...
1
vote
1answer
1k views

Is a PVC union air tight?

I have 1/2" PVC ran from my compressor to a hose real hanging on my ceiling. It works well, but I would like to add a PVC union around the last bend just before the reel. Would the union be tight ...
1
vote
4answers
119 views

Fridge turns on when banging it

My Kenmore full fridge intermittently turns off, and the only way to turn it back on is to bang it on its side. When it is off, unplugging it and plugging it back in doesn't help, neither does ...
1
vote
3answers
903 views

Refrigerator intermittently making loud clicks with compressor banging and shaking

Facts: 9 year old Whirlpool refrigerator has been operating quietly for 9 years. Refrigerator has two doors and is top-freezer/bottom-refrigerator configuration. About 3 months ago, it would ...
1
vote
1answer
30 views

Can you operate / permanently install an air compressor in freezing temperatures?

My garage is heated but it's attic is not. The attic is accessible and could make a good location for a large air compressor - saves space & could muffle the noise. But the annual temperature ...
1
vote
1answer
985 views

Inflating wheelchair tires to 90 PSI

I'm looking for a way to easily fill my wheelchair tires to 90 psi. I understand that I don't understand all the technical stuff I should consider when buying a small compressor or a tire inflator, ...
1
vote
1answer
8k views

HVAC making sound even when off

At Thermostat Fan was on Auto Cooling was On Outside Unit was making noise. Outside Unit Fan not coming on at all Next to the compressor on the Wall there was On Off Switch, I turned off power ...
1
vote
3answers
2k views

A small air compressor for cleaning? [closed]

I'm looking for a small air compressor for a small air compressor that I can use instead of a compressed air can for dusting my home electronics. From looking at websites like Amazon or Home Depot, ...
1
vote
1answer
2k views

HVAC tripping breaker - things to check before replacing?

HVAC system (we're in Houston, it's still hot here) stopped working Tuesday. A/C guy came out, determined it was tripping breaker. Would trip immediately after resetting, but after a couple of ...
1
vote
3answers
15k views

Air Compressor Quick Connect Coupler Won't Latch

Background: I just purchased a new air compressor. I was surprised to see that the collar on the quick connect coupling is retracted (I'm used to pulling the collar back to insert the male fitting), ...
1
vote
2answers
485 views

How do I extend existing 10/3 wiring to run a compressor that needs 12/2 wiring?

I am installing a new compressor in my garage. I already have 240V installed to run a kiln. The kiln is only used maybe 10 times a year. My thought is to splice into the 240V line to the kiln to run ...
1
vote
1answer
41 views

redirecting some air from outdoor A/C compressor into the attic to cool it down

I can't find any info on this question, and this might be a stupid idea... but anyway: The temperature in the attic is ca. 130F, 3pm, outside temperature 90F. ( Florida, 17y/o house ) Can I direct/...
1
vote
3answers
311 views

Will an AC compressor work upside down?

If an AC system is designed to keep liquid refrigerant out of the compressor, will the compressor be ok if installed upside down? It should only be dealing with gaseous refrigerant, but I don't know ...
1
vote
1answer
54 views

Is it ok to have a rise in an air compressors drain valve?

The designer of my compressor unfortunately didn't put a whole lot of thought into where to put the drain valve on it. It's on the back, and the compressor is against the wall, in a corner, usually ...
1
vote
1answer
617 views

Why does my compressor bog down at low pressure?

Just bought an air compressor, and when I turn it on it starts to build up air but when it gets to around 20 psi the motor seems to be slowing down almost to a stop. Does anyone know what's up with ...
1
vote
1answer
54 views

Loud noise from outdoor unit several seconds after AC turns off

I haven't been able to find anyone online with quite this issue... I have a Carrier heat pump system, and through the winter it would often make that torpedo noise when heating the house (I later ...
1
vote
1answer
231 views

Lennox air conditioner capacitor and compressor ohm readings

I have a Lennox 2.5 ton a/c unit, model 13ACD-036-230-05, with a blown dual run capacitor (the run terminal for the compressor is burnt off the can, the fan and common terminals are still intact, fan ...
1
vote
1answer
413 views

Is a tiny dent in a compressor tank a safety concern?

I saw some questions and answers on air compressors so I thought I would ask one: I just purchased a Chicago Pneumatics 21 gallon compressor and I noticed a tiny dent about 3+ inches from the upper ...
1
vote
3answers
91 views

Air Conditioner Iced

We've been having air condoning problems where our unit would freeze up / leak water. We brought out a tech to have a look, the indoor and outdoor unit was completely forzen. Once thawed, he said the ...
1
vote
1answer
277 views

What pressure rating should a replacement safety valve on a compressor have?

The safety valve on my compressor is leaking air. I found plenty of places that have replacement valves and they look easy to replace. My question is how do I know which one to pick they all have a ...