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Summary of Contents for MGF 930780
- Page 1 Art. 930780 Digital manifold pressure tester User Manual Rev. 1 dated 15/04/2021 srl –– Via Chico Mendes, 8 – 43058 Sorbolo Mezzani (PR) Italy – Tel. +39 0521-818301 Fax: +39 0521-818202 e-mail: info@mgftools.com – www.mgftools.com – www.nebulizzare.com...
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Page 2: General Information
General Information General Information SERVICE For any form of technical assistance you can contact us in one of the following ways: telephone: +39 0521 818301 fax: +39 0521 818202 email: assistenza@mgftools.com We will serve you as soon as possible. The shipment of material under repair must be previously authorized by means of the RMA form (binding condition for the collection of any goods under repair). -
Page 3: Rules And Precautions
Safety rules and precautions Safety rules and precautions This manual includes the use of instrument instructions and warnings for safe operation and maintenance. Failure to use the meter in accordance with the manual may damage the instrument. This instrument strictly follows the IEC/EN61010-1 safety standards for design and production. - Page 4 Built-in 89 kinds of refrigerant according to American NIST standard: R113 R114 R115 R116 R123 R124 R125 R1270 R134A R141B R142B R143A R152A R170 R218 R227A R236EA R245CA R245FA R290 R401A R401B R401C R402A R402B R403A R403B R404A R405A R406A R407A R407B R407C...
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Page 5: Function Instruction
Function instruction Function instruction Refrigerant filling and pressure inspection A. Turn off the blue valve and red valve. B. Power on the instrument. Then make sure if the LCD displays pressure test status as below picture. If not, press the Function button to switch it. C. - Page 6 - The instrument can calculate the SH – Superheat and SC - Subcooling as shown below as long as the tested refrigerant is preset and clamp-on temperature probes are connected well. Vacuum operation A. Turn off the blue valve and red valve. B.
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Page 7: Common Problems
Pressure Leak Test A. The instrument is power on with the blue and red valves turned off. B. Press the Function button to pressure leak test mode shown as below. The current pressure value is displayed at lower right corner of LCD. C. - Page 8 Glossary Glossary - Saturation The state of saturation is the coexistence of a refrigerant in a liquid and gas state. - Condensation temperature and evaporation temperature Condensation temperature: in the condenser, the refrigerant is condensed by the high-temperature gaseous refrigerant to the temperature of the liquid refrigerant, that is, the saturation temperature under the condensing pressure.
- Page 9 - COP and EER EER: the ratio of the cooling capacity to the effective input power when the air conditioner performs a cooling operation under rated conditions and specified conditions, the value of which is expressed in W/W. COP: under rated operating conditions (high temperature) and specified conditions, when the airconditioning heat pump heating operation, the ratio of heating and effective input power, the value of W/W.
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Page 10: Declaration Of Conformity
Declaration of Conformity srl - Via Chico Mendes, 8 - 43058 Sorbolo Mezzani (PR) - Italy declares under its own responsibility that the Digital manifold pressure tester art. 930780 is in conformity with the following standards or standardized documents: EN 61326-1:2013 ●...
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