Feature
●【Built-in 93 Kinds of Refrigerant Database】The upgraded Digital HVAC Manifold Gauge Set has a built-in 93 refrigerant pressure-evaporating temperature database according to the America NIST standard. Newly added 4 refrigerant types: R438A, R448A, R449A, and R452A. The manifold gauge set has the double pressure test, dual temperature test, digital readout, multi-unit switching (kPa, Mpa, bar, inHg, PSI or °C, °F ), and multi-mode function.
●【Automatic Calculation of Subcooling and Superheating】The refrigeration gauges built-in 32-bit digital processing unit and high-precision data acquisition unit, high data and stability. Digital refrigerant gauges can also calculate the supercooling and superheating degree, which is convenient to read the data directly during the operation. In addition, the ac manifold gauge set tests the percentage of vacuum measurement; pressure leak measurement, and leak time speed record.
●【Visualization Window & Refrigerant Charging & Vacuum Operation】Through the window of HVAC digital gauges, the charging state of the refrigerant can be directly observed, which is more convenient to operate. The HVAC digital manifold gauge set can realize vacuum operation by connecting the refrigeration equipment and vacuum pump. Note: When the gauge is turned on, there may be 10 digits in the high and low-pressure display area. At this time, press the zero button long until it returns to zero.
●【Pressure Leak Test】The manifold gauge calculates the pressure difference between the initial test pressure and the second test pressure to determine if the refrigerant is leaking. The digital HVAC manifold gauge set is specially used for the installation, testing and maintenance of refrigeration equipment such as air conditioners, refrigerators, and cold storage.
●【Ball Valve Type Switch & LCD Display & Hook Design】The HVAC refrigerant gauge adopts high-strength engineering plastics and an anti-skid design, the whole gauge is sturdy and comfortable to hold. Large-size LCD display, support backlight, the displayed data is clear and easy to read, easy to operate even in low light. The new ball valve switch has more precise control and longer service life. The 1/4 inch standard interface design ensures the durability and universality of HVAC digital gauges.
●【PACKING LIST & WARRANTY】The set includes a manifold gauge, 2pcs temperature clamps, 3pcs hoses, and hose seal fittings (air leak proof), and comes with a carry case for easy storage and portability of the manifold gauge set. We provide a 12-month free warranty and 24 hours friendly customer service to ensure your shopping experience. If you have any questions about this manifold gauge, please feel free to contact us and we will provide you with a satisfactory solution as soon as possible.
[Upgraded Gauge Set]
[Gauge Set]
[Single Gauge]
Description
Product Specifications
Pressure test: gauge pressure
Pressure test unit: Kpa; Mpa; bar; inHg; PSI.
Pressure test range: -101 Kpa – 6000 Kpa, Pressure display range: 0 KPA - 6000 KPA (pressure test function will not display negative numbers)
Pressure test resolution: 1 Kpa
Pressure test accuracy: +/- 0.5 %(FS)+ 5dgt
Pressure overload limit: 10000 Kpa (10 Mpa; 100 bar;)
Vacuum test: relative vacuum
Vacuum test unit: Kpa; Mpa; bar; inHg; PSI.
Vacuum test range: -101 Kpa – 0 Kpa
Vacuum test resolution: 1 Kpa
Temperature test unit: °C (Celsius), °F (Fahrenheit)
Temperature test range: -40°C–150°C (-40°F–302°F)
Temperature test resolution: 0.1°C (-40°C–99.9°C), 1°C (100°C–150°C) / 0.1°F (-40°F–99.9°F), 1°F (100°F–302°F)
Temperature test accuracy: +/- 0.5 °C + 2dgt +/- 0.9 °F + 2dgt
Power Supply: 4 X 1.5V (SIZE.AA / LR6) Battery not include
Vacuum Operation
- Turn off the blue valve and red valve.
- Power on the instrument. Then make sure that the LCD displays the vacuum test status. If not, press the Mode button to switch It. (When the instrument is turned on, there may be 10 digits in the high and low pressure display area. At this time, press the zero button long until it returns to zero.)
- Press the unit button to adjust the reading unit.
- Connect the instrument to the refrigeration system as shown. (pay attention to the direction of the refrigerant flowing!!! ) (Connected clamp-on temperature probes will not affect the operation..)
- Turn on the blue valve and red valve, and start the vacuum pump.
- After the extraction is completed, first turn the blue valve and red valve to the closed state, and turn off the power of the vacuum pump.
- At this time, the mode can be adjusted to the leakage test state to observe whether there is leakage in the refrigeration system pipeline. If there is any leakage, the location of the leakage point can be further checked for maintenance; if there is no leakage, the next step of refrigerant filling operation can be performed.
Refrigerant Filling and Pressure Inspection
- Turn off the blue valve and red valve.
- Power on the instrument. Then make sure that the LCD displays the pressure test status. If not, press the Mode button to switch It. (When the instrument is turned on, there may be 10 digits in the high and low pressure display area. At this time, press the zero button long until it returns to zero.)
- If the temperature probe accessories have been connected to the instrument, the real-time temperature will be displayed. If not, no display of it.
- Press R+/ R- buttons, Unit button and ℃/℉ button to select the tested refrigerant and reading display respectively.
- Connect the instrument to the refrigeration system as shown. (pay attention to the direction of the refrigerant flowing!!! )
- Turn on the refrigerant valve and gently press the pressure release valve to vent the air in the connecting hose.
- When the refrigeration system stops, turn on the high pressure valve (red valve) and fill it with a certain amount of refrigerant and then shut the valve quickly.
- Run the refrigeration system, and turn on the low pressure valve (blue valve). and fill with the refrigerant into the refrigeration system. Vacuum operation is required if it is filled initially or in full with refrigerant. Refer to the section on vacuum operation.
- After the filling is completed, shut the low pressure valve (blue valve) and refrigerant valve. Let the refrigeration system running.
- Shut down the refrigeration system, make sure all valves are turned off, then disconnect the instrument between the refrigeration system and source. Do not remove the high pressure valve connection until the pressure drops to the safe point. Then turn off the instrument.
Note: The filling operation of different equipment or refrigerants may vary. Please read carefully the relevant specific operation requirements for filling operation, so as to avoid damage to users or equipment caused by improper operation!!
PRODUCT PARAMETER
PRODUCT DETAILS
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Back Hook Design |
Temperature Sensor Interface |
Anti-Slip Design |
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Ball Valve Type Switch |
Observation Window |
1/4 Inch Standard Interface |
Common Problems
1、Low battery power supply
The refrigerant gauge has low power sign. When it is displayed, it means the battery power is insufficient. At this time, the battery should be replaced as required in order to avoid affecting normal use.
2、Damaged refrigerant hose or valve stem
Please check the pipe fittings and the hoses before testing. Once any damage is found, please replace it immediately.
3、Failure of refrigerant filling
There Is a valve core In the refrigerant inlet of the refrigeration system. When connecting the instrument, pay attention to the two terminals of the hoses. Connect one terminal with a core to the refrigeration system, while another terminal without a core to the refrigeration gauge.
4、Potential leak points
Every hose terminal comes with a nylon pad limited to a certain life of use. Overuse or other situation will make it defective, which result in leakage.
The instrument refrigerant inlet (the middle port of the Instrument ) has a port with a valve core, which is used to discharge the air in the connecting pipe by pressing the valve core after connecting the refrigerant source.
5、Product does not work properly
Please let us know and we can reship brand new gauge, hoses, temperature clamps or suitcase.