ELITECH EMG-20V (01) PDF MANUAL

Only qualified personnel trained in service and installation of A/C and/or refrigeration equipment shall use this product. Read and understand this user manual in its entirety before using your manifold to prevent injury or damage to you or equipment.

Caution:

• This product is not suitable for maintenance of ammonia (ammonia-containing) refrigerant system.

• This product contains batteries. Do not place the product in a high temperature environment or place in a fire. Otherwise, it will explode.

• Do not use this product during thunderstorm to avoid being stuck by lightning causing life danger and product damage.

• Strictly obey the safety cautions of the refrigeration system.

• Please put on goggle and protective gloves while using the product. Please read the maintenance instruction of the system unit carefully before connecting the device to the system.

• Please contact us in time if the product is damaged. Do not dismantle the product on your own to avoid further damage to the product that might cause batteries fire or explosion.

• When using other power adapters, the output voltage must not exceed 5V, otherwise the instrument will be damaged.

• The magnet embedded at the back of the product is to position the folded hook. Do not try to attach the product to any metal surface to avoid the product from falling and damage.

Please comply to local environmental protection policies. Refrigerants should not be directly discharged to the atmosphere and must be recycled with professional equipment.

At the end of the product service life, please recycle it according to the local regulations. Do not dispose randomly to avoid environmental pollution.

EMG series of intelligent manifold gauge integrates the functions such as pressure and temperature measurement, pressure holding measurement, vacuum measurement, refrigerant weight measurement and data logging. It is suitable for daily inspection and maintenance of HVAC/R system.

• Simple & easy operation with 5″ smart touch screen, clear data display.

• Support App Operation by the Bluetooth, data view and analysis in real time.

• Support USB to read and export data.

• Auto heat pump mode without changing the refrigerants hoses.

• Detect the vacuum leakage, monitoring the vacuum value precisely.

Note: The refrigerant weight measurement function is unavailable. The manifold can control the new Elitech scale in the future.

Note: Data export via USB cable connected to a computer.

1. Press the power button to turn on and enter the main menu.

2. Connect the high and low pressure temperature clamp on both sides of the mainframe and clamp the temperature sensor to measure the temperature of the corresponding system.

3. Connect the high pressure and low pressure interface of the system to the corresponding interface of the instrument.

4. Click on the Pressure/Temp icon to enter the pressure temperature measuring interface.

5. Select the refrigerant by clicking the refrigerant name (e.g., R134a).

6. Choose the corresponding working mode according to the current system, usually is the refrigeration mode.

7. After the setup is done, you may check the accurate status of the system through the interface.

1. Fill the system with appropriate amount of nitrogen.

2. Close the High-Pressure Side Valves.

3. Connect the measured system to the high pressure side of the instrument.

4. Click the Pressure Hold icon to enter the pressure-holding test.

5. Click the Settings icon and set the desired parameters.

6. Press the Start icon to enter the pressure-holding test.

1. Connect vacuum transmitters to the system and connect communication cable to the manifold.

2. Open the low-pressure side and high-pressure side valves. (applicable to EMG-20, EMG-40 series).
Open the low-pressure side, high pressure side valve, vacuum valve, and close the charging valve. (applicable to EMG-40 series).

3. Click the Evacuation icon to then enter the vacuum interface and set the desired value and working time.

4. Turn on the vacuum pump and pump to the set value.

5. Click the Alarm Settings icon to set the alarm.

6. Close all valves.

7. Click the Start icon to enter the leak test.

In the main settings menu, select “Units”. On the Unit Settings screen, you can set the unit for weight (Lb, Kg), temperature (°F, °C, K), pressure (psi, bar, inHg, kg/cm2, cmHg, kPa, Mpa), and vacuum (micron, mTorr, mbar, Torr, psia, inHg, kPa, Pa). Click the back arrow to go back to the previous page. The parameters are saved automatically.

In the main settings menu, select “Refrigerant”. User may select the desired refrigerant from the refrigerant selection box. The selected refrigerant will be added to Favourites automatically. Maximum 20 refrigerant can be added.

Note: If the number of favorites exceeds 20, the earliest refrigerant will be replaced with the latest refrigerant that has been selected.

In the main settings menu, select “Pressure Hold”. On this page, you can set the pressure decay ratio, pressure holding time (duration), and enable/disable temperature compensation. Click the back arrow to go to the previous page. The parameters are saved automatically.

In the main settings menu, select “Evacuation”. The alarm (RANGE) and duration (PERIOD) for refrigerant leak can be set. Click the back arrow to go back to the previous page. The parameters are saved automatically.

In the main settings menu, select “Record”. You may enable/disable recording, set the recording interval, and clear record history in this page. Press the “Format” button to clear the record history.

Note: The recording will stop automatically when it reaches the maximum capacity. Please export the data in time and clear the record history.

In the main settings menu, select “Settings”. User may set the backlight brightness, backlight time, system auto shutoff and system language in this page.

• Press “Wireless” to enter the next page to enable/disable wireless.

• Press “Zero” to zero off the high and low pressure.

• Press “Factory” to factory reset.

Note: Please place the device in the atmospheric environment while calibrating.

There are three measurement modes in page:

• Refrigeration mode: This is the regular mode.

• Heat pump mode: VSAT parameters and LSAT parameters will be switching display position.

• Automatic mode: The display position of the corresponding parameters will be switching automatically when the pressure of the low-pressure side is 1 bar higher than the high-pressure side.

Simply click on the middle of the dial meter to switch to curve mode. Click the back arrow to switch back to dial mode.

• The timer on the status bar on top starts timing automatically once user enter this page. The purpose is to record the time user spend on this page.

• The “TCON” icon indicates the temperature compensation has been enabled or disabled. It can be set in the pressure-holding settings interface.

• Temperature compensation enabled: The device will monitor the current ambient temperature in real time to reduce the pressure variation error that caused by the change of the ambient temperature.

• Temperature compensation disabled: Device calculate based on the measured pressure.

• Click the settings icon to set decay ratio and pressure-holding time and choose if to enable or disable the temperature compensation based on the actual situation.

• Click the start icon to start the pressure-holding test. The countdown timer starts to elapse according to the duration that has been set. During the process, the device calculates the pressure variants and the deflation rate automatically based on the current and initial value. The test failed if the current value is less than the alarm value; the test passed if the current value is greater than the alarm value and exceed the pressure-holding duration.

• The timer on the status bar on top starts timing automatically once user enter this page to record the time spent on this page. The “Start” and “Alarm Setting” button is not displayed yet.

• Click the target or time value to select the preset vacuum target value. The device calculates the remaining time based on the targeted value and rate.

• The remaining time rest is for reference only.

• Working time: It is to set the current vacuum duration. The alarm goes off if the duration has exceeded without achieving the targeted value.

• If the duration is not exceeded and the targeted value is reached, it prompts that the leak test can be performed.

• The “Start” and “Alarm Settings” are displayed now.

• Click the alarm settings icon to enter the alarm setting interface.

• Click the start icon to enter leak test based on the alarm setting value. The parameters displayed in the vacuum interface will be switched to speed, test duration and alarm value. During the leak test duration, if the leakage is greater than the set alarm value, the leak warning will be prompted. Otherwise, the test is passed.

Notes:

1. This function has to work with the vacuum transmitter. Please plug the transmitter to the socket at the left of the device.

2. The timer on the status bar will be reset if the Working Time was re-set.

The refrigerant scale function is coming up soon. Currently the manifold could not connect Elitech scales.

Connect the device to the charger and try to turn it on after 5 minutes.

Make sure the environment temperature is within the working temperature range (-14~122°F/-10~50°C).

Check if the temperature clamp is fully connected or if the measuring temperature is out of the measurement range.

Pressure uncalibrated.

Please place the device in the atmospheric environment to calibrate zero.

The system has a large leak, or the vacuum transmitter data is abnormal.

System crashes. Long press the Power button for 7s to restart the system.

1. Storage: It is recommended to store the fully charged device or disconnect the battery if not using it frequently.

2. Cleaning: Please wipe the device with a damp cloth, Do not wash it directly. Note: Do not use any corrosive solvents!

3. Keep the connectors clean and remove the surface dirt regularly.

4. Check the device for any leaks regularly. It is recommended to check once a year.