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HVAC and Refrigeration

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HVAC and Refrigeration Q&A

HVAC and Refrigeration
(36 Questions : 58 Answers)

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Duo Therm Monel no 1460-5 Serial no 1658x56 Control SP I having a hard time finding replacing parts for it. I wish their is somebody to helppppppppp
1 year ago
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Answer: 
In order to better assist you we will need additional information. Please call 1-800-Grainger Monday-Friday 7AM-7PM to speak with a Technical Product Support Specialist.
1 year ago
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Answer: 
Determine where the heater was purchased from and see if parts are still available for that model.
11 months ago
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Answer: 
Their web site, or google the model number for parts.
10 months ago
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Is there an adapter or hose with th small end for the old F22 and the other for the new 134.
9 months ago
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Answer: 
yes. It is available at most hvac supply stores.
A major note here. You are not only dealing with a different Freon but also a new type of oil. You really need new hoses so you don't mix oils. You may get by with it, but if you are working on a car it may cause problems
9 months ago
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Answer: 
There are conversion kit for the automotive industry for R12 to 134A that might meet you requirement. Google R12 to R134 and select images. There quite a few to choose from. Might help ?
9 months ago
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Answer: 
Yes. almost any refrigeration supply has them. the 134a is a quick connect chuck. Here in St. Louis, MO I got mine from United.
4 months, 2 weeks ago
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Replaced blower motor on AC 1100 rpm to 1600 ... Three speed motor on slowest speed Is ok, Med or high loud & shakey
2 months, 2 weeks ago
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Answer: 
Although we can only speculate, it sounds as if the unit was balanced for a lower RPM at 1,100. Manufacturers do not suggest running at higher speeds than what they were engineered for. At low speed, that motor is running around 1,250 RPM.

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2 months, 1 week ago
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Answer: 
--1) Fan blade is out of balance. 2) Motor mounts are loose or broken. 3) Motor mounts rubber vibration washers are missing. 4) New motor is defective.
2 months, 1 week ago
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Answer: 
Brat,
Probably you unbalance the wheel taking the motor out, or the wheel was unbalance, if the wheel is old or has corrosion may be was unbalance. Replace the wheel (blower) with the same size and kind, be sure is the same: rotation, single or double inlet, diametric, width, hub, max rpm above 1600rpm (1725rpm), number of blades. Be carefully taking or installing the wheel, if the wheel is metal and you want to clean it, do NOT use water unless is plastic, just dust it with a paint brush and blow with air compressor. If the hub was to hard to take it out the shaft, there is a tool extractor for that.
Don't feel bad, this is a very common problem with an amateurs hvac guys.
2 months, 1 week ago
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I have two chillers and need fine glycol or antifreeze to put in then so dosnt take out the pump
1 year ago
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Answer: 
a water treatment like the one you mentioned or an additive that contains a lubricant for the seals and bearings. It also helps keep down oxidation on internal parts. Either is available at johnstone supply or maybe grainger
11 months ago
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Answer: 
There are different types of glycol for different applications. I recommend calling our HVAC tech team to discuss your application details to find the correct product. 800-472-4643

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1 year ago
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Answer: 
You need to have a sample of the water tested to determine how much chemical and of what type to put in.
11 months ago
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1 year, 8 months ago
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Answer: 
There is not enough information provided to assist in finding a correct fitting. I would recommend calling our plumbing tech team to discuss the application in detail.
800-472-4643

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1 year, 7 months ago
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Answer: 
I think you might have better luck having a short hose manufactured at a local hydraulic hose store or tractor shop. It would be near impossible to bush this conversion, as you are probably talking very nearly the exact outside pipe diameters. You could the hose made with a metric pipe fitting on one side and standard on the other. if both pipes are rigid and you don't have room, consider making the hose 10" long, or so, and you can loop it if you are able to manipulate the pipe from side to side.
1 year, 7 months ago
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1/2" inlet and outlet
1 year, 6 months ago
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Answer: 
We have some hot water coils in the Grainger catalog on page 4401 of catalog 403. You can search this page on grainger.com by typing "page 4401" in the keyword box. However, there are none that match your specifications exactly. Also the coils we offer have 3/4" pipe connections. If one of these coils will not work in your application you may want to consider calling our HVAC tech team. With some information from your existing coil we may be able to find a manufacture we can order from. 800-472-4643

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1 year, 6 months ago
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Answer: 
check with Water Furnace, or other manufacturer. If it is some kind of project, you may think about using an automotive application. Those exchangers get very pricey due to materials used such as nickel alloys.
1 year, 5 months ago
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1 year, 3 months ago
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Answer: 
Grainger does carry them. I don't work for Grainger. I am a career HVAC guy who answers technical questions for them from time to time. As far as residential boilers go, it all depends on what size you need and what type fuel you are using for it. I have seen people use everything from wood burning boilers to oil and gas. Those things will determine what type you need and where you can get one.
1 year, 3 months ago
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Answer: 
Call a grainger representative and talk with them.
11 months ago
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1 year, 2 months ago
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Answer: 
That is not enough info for a proper ID. If you can get the voltage,
casing size, shaft size, and rotation holding the motor where the wires come out of the motor towards you and the shaft away from you. This info and any numbers on the motor sticker will help.
Then take all that info to your local grainger,johnstone, or electric motor rebuilder you will find it.
1 year, 2 months ago
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Answer: 
You need to establish the make of the fan and determine if parts are still available.
11 months ago
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what kind of brazing rod and,or flux.Is there a type of silphos available?
1 year, 2 months ago
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Answer: 
EUTECSIL 1020XFC is one kind of silver alloy you can use. It is tough to braze anything to stainless and it be very durable. Ice machines have vibrations during it's normal cycle that tend to crack a brazing weld. Tig may be your best bet
1 year, 2 months ago
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Answer: 
Not sure of the purpose or required durability, but I have had good success using a high silver content solder rather than brazing. It has high strength and and less heat damage to the stainless.
1 year, 1 month ago
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2 answers

Wall Heaters

How many BTU's are necessary to heat 400 sq. ft. ?
1 year ago
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Answer: 
It depends on the R value of the insulation of the walls and roof. The better the insulation, the less heater needed.
1 year ago
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Answer: 
400 sq. feet is not a very large area. A small portable heater would be sufficient.
11 months ago
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