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How to read freon gauges -





How to read freon gauges - Bookshelf


738 pages

Basic Refrigeration and Air Conditioning

Air conditioning - 2013

Now coming back to our refrigeration system, as explained earlier, air and moisture in the system should be removed ... Even a good, well-calibrated compound gauge cannot read anything less than 735 or 750 mm (29 or 291⁄2≤) accurately.

Publisher: Tata McGraw-Hill Education



400 pages

Today's Technician: Automotive Heating & Air Conditioning

Creator: Mark Schnubel | Technology & Engineering - 2008-08-11

HFC-134a is hydrofluorocarbon refrigerant gas used as a refrigerant and is also known as R-134a. This refrigerant is not ... Low-side gauge is the left-side refrigerant gauge on the manifold used to read pressures on the low side of the system.

Publisher: Cengage Learning

About this book
Today's Technician: Heating & Air Conditioning, 4E is a two-book set that separates theory and diagnostic content into Classroom and Shop Manuals. This separation allows readers to learn theories of heating and air conditioning before applying them, with the benefit of cross-referenced page numbers in each manual to link related material. Updated to reflect the industry's latest developments and trends, this edition includes expanded coverage of basic theories, as well as all-new sections on upgraded equipment, sealant contamination and testing, and non-compressible gas contamination. In addition, the information on compressors has been updated to include new hybrid electric compressors and the safety issues that accompany them. With this up-to-date, technically accurate information, this is a valuable resource for learning the theory, components, diagnosis and repair of modern automotive heating and air conditioning systems.Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.



592 pages

Today's Technician: Automotive Heating & Air Conditioning Classroom Manual and Shop Manual

Creator: Mark Schnubel | Education - 2016-01-25

Chapter 5 The Manifold and Gauge Set BASIC TOOLS Manifold and gauge set with hoses Safety glasses or goggles ... Low-side gauge is the left-side refrigerant gauge on the manifold used to read pressures on the low side of the system.

Publisher: Cengage Learning

About this book
Updated to reflect the latest trends, technology, and relevant NATEF standards, this integrated, two-book set covers theory and hands-on content in separate Classroom and Shop Manuals. This innovative approach allows students to learn fundamental climate control theory, including basic physics related to heat transfer, before applying their knowledge through practical, hands-on shop work. Cross-references in each manual link related material, making it easy to connect classroom learning to lab and shop activity.Important Notice: Media content referenced within the product description or the product text may not be available in the ebook version.


Gauges Directory

Refrigerant Supply Inc. - Refrigerant: Refrigerant Freon ...
Refrigerant Supply Inc actively purchases your Refrigerant Purchase Recovery, Refrigerants Recycling Disposal, Freon Recycling and R12 Refrigerant

HVAC Manifold Gauges and P/T Chart - YouTube
I show how to read manifold gauges and P/T chart. Attention: Do not try any of what you see in this video at home. It takes at least two years of HVACR ...

How To Recharge Your Air Conditioner with Freon - ThoughtCo
If your car uses R134 type refrigerant, you can recharge your own AC system. photo by Matt Wright, 2008 Before you set out to recharge your car's air conditioning ...

How to Add Freon to Your Central Air Conditioner ...
How to Add Freon to Your Central Air Conditioner How to Add Freon to Your Central Air Conditioner

How to Charge an Air Conditioner That is Low On Freon ~ AC ...
How to Charge a split system Air Condition with Dupont R-22 Freon Refrigerant by Kung Fu Maintenance youtuber James H. Klovach. Get KFM's favored Multi ...


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Editor's picks

  • Enviro-Safe

    Enviro-Safe 3226 Can Tap with Gauge - R-134a can to R-12/R-22 port

    Automotive Parts and Accessories (Enviro-Safe)
    List Price: $21.95
    Price: $14.96
    You Save: $6.99 (32%)

    R-134a Can to R-12/R-22 service port connection
    Gauge has scale readings for R134, R12, & 22
    20" long hose
    End fits R12, 22, 502 fittings


  • ARKSEN

    ARKSEN 1/3HP 3 CFM Rotary Vane Vacuum Pump with R134A Manifold Kit

    Automotive Parts and Accessories (ARKSEN)
    List Price: $94.97

    Easy To Read Pressure Gauges
    Motor Size: 1/3HP
    R134a A/C Manifold Gauge Set
    Includes 3 Color-Coded 60" Long Service Hose With Storage Attachment
    Pump Air Displacement: 3CFM


  • ARKSEN

    ARKSEN 4-Valve (R404A R410A R22) Manifold Gauge Diagnostic Refrigerant A/C Tester + 4CFM 1/3HP Vacuum Pump

    Home Improvement (ARKSEN)
    List Price: $89.97

    Color coded hoses help identify the hoses for added convenience
    Operating Pressure: 800 PSI; Burst Pressure: 4000 PSI
    Free Air Displacement: 4 CFM; Power: 1/3 HP; Inlet Port: 1/4" Flare
    Quickly and effectively removes moisture and air arom air conditioning systems
    Compatibility: R404a, R410a, R22; Hose Length: 5 Feet


  • Interdynamics

    Interdynamics MAC-134 EZ Chill Refrigerant Refill with Charging Hose and Gauge - 18 oz.

    Automotive Parts and Accessories (Interdynamics)

    Rating (310 reviews):
    (4.1/5)
    Interdynamics

    4.75 Stars for an EZ AC Fix

    I'm not an expert, so I really liked that the refilling process was simple.1. Wait until the weather outside is between 75F to 85F (because that's what temperature gauge was calibrated to(some other refrigerants have a variable weather adjustment, but not this company)).2. Turn your car on, set the AC to full blast and wait a few minutes.2. Screw the small end of the hose to the refrigerant can head.3. Attach the big end of the hose to the low side port by holding back the quick release of the hose and then letting go of it when the hose is on the port.4. Let the gauge measure the pressure. If your gauge is not working correctly, it's probably because your compressor is not spinning (it stops spinning when your car is really low on refrigerant). You need to add a bit of refrigerant at this point just to get a pressure reading.5. Take the blue cap off the can and spray for a couple minutes. Make sure to have the... 5/5 P - See all my reviews Verified Purchase(What's this?) This review is from: Interdynamics MAC-134 EZ Chill Refrigerant Refill with Charging Hose and Gauge - 18 oz. (Automotive) I'm not an expert, so I really liked that the refilling process was simple.1. Wait until the weather outside is between 75F to 85F (because that's what temperature gauge was calibrated to(some other refrigerants have a variable weather adjustment, but not this company)).2. Turn your car on, set the AC to full blast and wait a few minutes.2. Screw the small end of the hose to the refrigerant can head.3. Attach the big end of the hose to the low side port by holding back the quick release of the hose and then letting go of it when the hose is on the port.4. Let the gauge measure the pressure. If your gauge is not working correctly, it's probably because your compressor is not spinning (it stops spinning when your car is really low on refrigerant). You need to add a bit of refrigerant at this point just to get a pressure reading.5. Take the blue cap off the can and spray for a couple minutes. Make sure to have the... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , May 12, 2014

    Works but with some issues.

    3/5 R. Evans (Alpharetta, GA United States) - See all my reviews, July 30, 2016

    Worked great with minor issue....

    Got it today and put it right to use. The instructions on the can are completely sufficient to use the kit. My 2010 Honda Pilot had a problem (not uncommon with this system) where the clutch relay broke while the clutch was engaged causing the system to over pressurize releasing coolant from the pressure valve (what a racket!). Once I figured out the problem and replaced the $8 relay all was good except for just cool air out of the AC.The issue for me was that the decal on the inside of the pressure gauge was not flat so the needle inside stuck each time I added refrigerant. I had to release the valve from the LP side to get the needle to drop then reattach to read the current pressure. After a few times I smacked the gauge a few times with my finger and the needle started working well enough to use. Docking one star.When I started, the gauge read just below the green area indicating refrigerant was needed. I ended up using the entire can with the... 4/5 BigATC (N. Cal. USA) - See all my reviews Verified Purchase(What's this?) This review is from: Interdynamics MAC-134 EZ Chill Refrigerant Refill with Charging Hose and Gauge - 18 oz. (Automotive) Got it today and put it right to use. The instructions on the can are completely sufficient to use the kit. My 2010 Honda Pilot had a problem (not uncommon with this system) where the clutch relay broke while the clutch was engaged causing the system to over pressurize releasing coolant from the pressure valve (what a racket!). Once I figured out the problem and replaced the $8 relay all was good except for just cool air out of the AC.The issue for me was that the decal on the inside of the pressure gauge was not flat so the needle inside stuck each time I added refrigerant. I had to release the valve from the LP side to get the needle to drop then reattach to read the current pressure. After a few times I smacked the gauge a few times with my finger and the needle started working well enough to use. Docking one star.When I started, the gauge read just below the green area indicating refrigerant was needed. I ended up using the entire can with the... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , May 7, 2014
    List Price: $27.08
    Restores lost refrigerant and oil
    All in one solution
    Easy to read gauge
    Contains leak sealer to stop most common leaks in rubber hoses gaskets and O-rings
    Self dispensing can has reusable recharge hose and in line pressure gauge


  • Generic

    Diagnostic R134a R12 R22 Ac Air Conditioner Manifold Gauge Aluminum Valve

    Home Improvement (Generic)
    List Price: $46.46

    Wear Pressure In PSI Temperature In °C For R12; R22; & R134a Extra Large Easy To Read
    Color Coded Dials Rubber Gauge Sleeve Covers For Added Protection (DOES NOT INCLUDED ) Durab
    Diagnostic R134a R12 R22 AC Air Conditioner Manifold Gauge Aluminum Valve Large 2 3/4",Diameter Easy-to-read; Dual Gauges Manifold With Built-in Sight Glass High Pressure Or Low"
    Pressure Is Selectable Diaphragm Valves With Swivel Seals For More Positive Seal And Less


  • ARKSEN

    ARKSEN 4-Valve Manifold HVAC Dual Gauge, R404A R410A R22 w/ Carrying Case

    Automotive Parts and Accessories (ARKSEN)

    Rating (25 reviews):
    (3.0/5)
    ARKSEN

    Poorest quality imaginable

    1/5 Brian D. Lampton (Growers R Us LLC) - See all my reviews, December 6, 2015

    This guage fit on the 410a ports needs to get ...

    1/5 Zamina Maharaj - See all my reviews Verified Purchase(What's this?) This review is from: ARKSEN 4-Valve Manifold HVAC Dual Gauge, R404A R410A R22 w/ Carrying Case This guage fit on the 410a ports needs to get an adaptor to use it ,it came with two adaptors but for some it does not engage the ports properly.i screwd out the hose from the adsptor while it was hooked up on the system and no freon was flowing out so that tell me the adaptor is not working because if freon cant come out then it cant go in so can add freon to my ac uniti Help other customers find the most helpful reviews  Was this review helpful to you? , November 15, 2014

    Specification incorrect

    1/5 Gabriel - See all my reviews Verified Purchase(What's this?) This review is from: ARKSEN 4-Valve Manifold HVAC Dual Gauge, R404A R410A R22 w/ Carrying Case Does not actually have the adapters, markings or ratings for R-134A. You can buy adapters, but the refrigerants are not compatible so watchout. Help other customers find the most helpful reviews  Was this review helpful to you? , March 29, 2015
    List Price: $44.97
    (4) 5 Feet Color Coded Charging Hose: Red (1/4" SAE), 2x Yellow (1/4" SAE), Blue (1/4" SAE)
    Carrying Case Included
    Working Pressure: 800PSI / Burst Pressure: 4000PSI
    Pressure In PSI Measurement Fahrenheit Degree (F)
    Reading Gauge Diameter: 2-3/4"


  • Generic

    A/C R134a R12 R22 Single Manifold Gauge Kit 4 Testing Charging Air Conditioner By YOLO Stores

    Home Improvement (Generic)
    List Price: $39.95

    Vibration resistant gauges feature a flutter-free design with provides accurate readings
    Heavy duty brass manifold body is highly durable and lightweight
    Single Ac Low Side Manifold Gauge Kit, Hose, and ACME adapter
    Heavy duty solid brass connections resists wear and last a lifetime.
    Easy to read gauges feature 3 PSI scales (R134a, R22, R12) and Fahrenheit scale


  • Orion Motor Tech

    Orion Motor Tech AC Diagnostic Manifold Gauge Set Ideal For R12, R22, R502 Refrigerants - 5FT

    Automotive Parts and Accessories (Orion Motor Tech)
    List Price: $26.99

    2500 PSI burst pressure, 500 PSI maximum working pressure
    Solid brass connections with stable quality
    Precise instrumentation, easy to read
    Freon charging hose: 5 FT length, 1/4 inches ends fitting, 3 piece (red, yellow, blue)
    AC diagnostic manifold gauge set for R12, R22 R502 refrigerants


  • XtremepowerUS

    XtremepowerUS R12 R22 R134A R502 A/C Air Conditioning Ac Refrigerant Manifold-Gauge Set

    Automotive Parts and Accessories (XtremepowerUS)
    List Price: $22.95
    Price: $22.83
    You Save: $0.12 (1%)

    Fittings with high pressure safety valve
    Automotive diagnostic and service tool kit
    Easy to read gauges. Has Reading of R12 R22 R134a R502
    Freon Charging hose 2500PSI burst, 500PSI max W.P
    Three (3) 3ft color-coded service hose


  • ARKSEN

    ARKSEN Deluxe Manifold Gauge A/C, 3CFM Vacuum Pump, 5ft HVAC Hoses

    Home Improvement (ARKSEN)

    Rating (43 reviews):
    (3.8/5)
    ARKSEN

    Am very well pleased and they work great

    5/5 Lester Hebert (PRESCOTT VALLEY, AZ, US) - See all my reviews, March 31, 2016

    Needs better manuals and service support.

    3/5 David G. - See all my reviews Verified Purchase(What's this?) This review is from: ARKSEN R134a R12 R22 R502 Manifold Gauge & 5CFM 1/2HP Vacuum Pump 5ft HVAC Kit The gauge set is solid but comes with now manual or even a vendor name on the box. I was hoping to find a way to order parts if necessary som time in the future. The vacuum pump looks rugged and well made. The storage cap for the outlet needs a retainer strap for when the pump is in use. The manual for the vacuum pump is very pump translated from another language and has not means for ordering pats if it needs servicing in the future . Not a bead set for the price but do not plan on using it heavily for a long period of time. Help other customers find the most helpful reviews  Was this review helpful to you? , March 3, 2017

    Set good, but requires work to use. Bad gaskets, good pump and gauge.

    PROS: Good inexpensive pump. Gauge works well. PRICECONS: Bad air hose gaskets. Celsius readings only - requires conversion by user to Fahrenheit.OVERALL: It is nice for the money, but requires work to use. I would buy it again if not able to find one with a F reading on the gauge for similar price.We bought this pump & gauge set ($99) to help diagnose our old motor home a/c. When my husband tried to hook up the hoses, he discovered the cheap plastic air hose gaskets had arrived broken and leaked terribly. They had to be replaced before using ($4). The gauge scale is in Celsius with no Fahrenheit scale. Since other equipment listed requirements in F, use required constant conversions.cheap plastic gaskets is hoses that leaked terribly and had to be replaced before use. The gauges showed the a/c would not hold pressure and he found the receiver/drier was the culprit. Went to Amazon for freon (dozen cans $57.75 and we used 3) and to the manufacturer... 3/5 J. Smith - See all my reviews Verified Purchase(What's this?) This review is from: ARKSEN Deluxe Manifold Gauge A/C, 3CFM Vacuum Pump, 5ft HVAC Hoses PROS: Good inexpensive pump. Gauge works well. PRICECONS: Bad air hose gaskets. Celsius readings only - requires conversion by user to Fahrenheit.OVERALL: It is nice for the money, but requires work to use. I would buy it again if not able to find one with a F reading on the gauge for similar price.We bought this pump & gauge set ($99) to help diagnose our old motor home a/c. When my husband tried to hook up the hoses, he discovered the cheap plastic air hose gaskets had arrived broken and leaked terribly. They had to be replaced before using ($4). The gauge scale is in Celsius with no Fahrenheit scale. Since other equipment listed requirements in F, use required constant conversions.cheap plastic gaskets is hoses that leaked terribly and had to be replaced before use. The gauges showed the a/c would not hold pressure and he found the receiver/drier was the culprit. Went to Amazon for freon (dozen cans $57.75 and we used 3) and to the manufacturer... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , October 16, 2015
    List Price: $89.99
    Internal High Volume Cooling Fan for Extended Use
    Direct Drive Motor Allowing Easy Starting and is Maintenance Free, Micro Rating: 75 Microns (10pa)
    3 CFM Single-Stage Rotary Vane Vacuum Pump 10Pa VACUUM package DEAL !
    Heavy-duty Aluminum Alloy Casing
    Motor Power: 1/3HP, 3 CFM, Pump Speed: 1720 RPM, Power Voltage: 110V, 60Hz


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