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!! 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.
Price: 145 USD
Location: Bordentown, New Jersey
End Time: 2024-09-07T10:37:16.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Return policy details:
Brand: DUOYI
Gauge Purpose: Pressure, Temperature, Test, Vacuum
Type: Manifold, Gauge & Hose Set
Color: Gray
Vacuum Units: PSI
Country/Region of Manufacture: China
Items Included: Clamp Probe, Blue Low Side Hose, Red High Side Hose, Yellow Service Hose
MPN: DUOYI 522A
Refrigerant: R-123, R-12, R-134a, R-22, R-290, R-401a, R-401b, R-402a, R-402b, R-407a, R-407c, R-408a, R-409a, R-410a, R-414b, R-416a, R-422b, R-422c, R-422d, R-427a, R-448a, R-500, R-502, R-600a
Item Width: 145mm/5.7inch
Item Length: 240mm/9.45inch
Gauge Fill: Oil
Model: DY522A
Item Weight: 3.2kg
