MGF 930780 User Manual Download Page 3

Safety 

Safety 

rules and precautions

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.

1) The pressure measured by the digital manifold pressure tester is gauge pressure

2) Pressure testing ranges from -101KPa to 6MPa (- 0.1bar to 60bar)

3) The limit pressure is 10 MPa (100 bar)

4) The maximum operating pressure of standard hose is 600 PSI (approximate 4.13 MPa, 41.3 bar). The limit pressure is 
3000 PSI approximate 20.68 MPa, 206.8 bar.

5) Please confirm the rated pressure value of the tested equipment before testing. Do not use it if it exceeds the range of the 
instrument. If the packed hoses does not match the pressure requirement, you can use suitable replacements for testing.

6) Do not use and store the instrument in high temperature, high humidity, flammable, explosive and strong electromagnetic 
fields.

7) Please do not change the instrument internal circuit, to avoid any damage of the instrument or danger occurring.

8) Please wear qualified protective equipment to protect user during testing.

9) Please use the instrument in a well-ventilated environment to prevent inhalation of toxic gases.

Product Specification

Product Specification

s

s

Pressure

gauge pressure

Pressure unit: KPa; MPa; bar; inHg; PSI.

Pressure range: 0 KPa – 6000 KPa

Pressure resolution: 1 KPa

Pressure accuracy: +/- 0.5 %(FS)+ 5dgt

Pressure overload limit: 10000 KPa (10 MPa; 100 bar;)

Vacuum

relative vacuum

vacuum unit: KPa; MPa; bar; inHg; PSI.

vacuum range: -101 KPa – 0 KPa

vacuum resolution: 1 KPa

Temperature

 

test unit: °C (Celsius), °F (Fahrenheit)

temperature range: -40°C–150°C (-40°F–302°F)

temperature 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 accuracy: ±0.5 °C + 2dgt / ±0.9 °F + 2dgt

3

MGF

MGF

 srl –– Via Chico Mendes, 8 – 43058 Sorbolo Mezzani (PR) Italy –

 

Tel. +39 0521-818301 Fax: +39 0521-818202

e-mail: [email protected] – 

www.mgftools.com

  

www.nebulizzare.com

Summary of Contents for 930780

Page 1: ...ico 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 Art 930780 Digital manifold pressure tester User Manual Rev 1 dated 15 04 2021 ...

Page 2: ...storage The instrument has double pressure sensors dual temperature probes digital readout multiunit switching multi mode function and built in refrigerants database The instrument uses high strength engineering plastics and flexible non slip silicone design the whole machine is solid and comfortable to hold Built in 32 bit digital processing unit and high precision data acquisition unit high data...

Page 3: ... and store the instrument in high temperature high humidity flammable explosive and strong electromagnetic fields 7 Please do not change the instrument internal circuit to avoid any damage of the instrument or danger occurring 8 Please wear qualified protective equipment to protect user during testing 9 Please use the instrument in a well ventilated environment to prevent inhalation of toxic gases...

Page 4: ... and description Icon and description 1 Clamp on temperature probe socket 2 Clamp on temperature probe socket 3 LCD display 4 Run Stop button In Leak Test Mode Test Control Button 5 Function button test function mode switch button 6 R R Refrigerant Type Selection Buttons Switch to select different types of working refrigerants 7 Unit button pressure unit switch button 8 C F button temperature unit...

Page 5: ... 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 J After the filling is completed shut the low pressure valve blue valve and refrigerant valve Let the refrigeration system running K Shut down the refrigeration system make sure all valves are turned off then disconnect the instrumen...

Page 6: ...ump Turn off the blue valve and red valve B Power on the instrument Then make sure if the LCD displays vacuum test status as below picture If not press the Function button to switch it C Press the unit button to adjust the reading unit D 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...

Page 7: ...ged refrigerant hose or valve stem Please check the pipe fittings and the hoses before testing Once any damage is found please replace it immediately to avoid improper use or any accident occurring 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 termi...

Page 8: ...n the surface of a container or object is called absolute pressure the absolute pressure value is absolute vacuum as a starting point the symbol is PABS ABS is a subscript and the absolute pressure is atmospheric pressure gauge pressure At atmospheric pressure the gauge pressure is 0 and the absolute pressure is 1 013 bar Dry bulb temperature wet bulb temperature and black ball temperature Dry bul...

Page 9: ...ue 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 9 MGF MGF 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 ...

Page 10: ...wn responsibility that the Digital manifold pressure tester art 930780 is in conformity with the following standards or standardized documents EN 61326 1 2013 MGF MGF srl 10 MGF MGF 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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