ENVIRO-DUO - Refco Manufacturing Ltd.

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EnglishInstruction Manual ENVIRO-DUO8. Recovery Method1. Turn the Switch to position "1".2. Correctly and firmly connect the hoses.(See Connection Drawing)3. Connect the unit to the right power supply (as shownon the Name Plate), turn the power on to start the unit.4. Push the START button to turn on the unit.Manifoldgauge setHVAC System80% O.F.P.float cableVaporLiquidInputFilterOutputVapor valveLiquid valveTankScale5. Open the valve of the refrigerant tank.6. Open the liquid valve on the manifold gauge.7. Slowly turn the Switch to position "2" for faster recovery.15
Instruction Manual ENVIRO-DUOEnglishNotice:a. If liquid impacting occurs in the compressor when atposition “2”, please turn the knob to position “start”slowly. The reading of low pressure gauge will decreaseuntil the impacting stops, but the pressure should beabove“0”, because the intake port cannot intake whenthe pressure is “0”.If it is difficult to start or restart after power off , pleaseturn the knob to position “START”, then turn on thepower and hit the RESET button.b. If the knob is turned to position “1” and the unit it running,a stable recovery of liquid refrigerant can occur, butat a lower recovery rate. If liquid impacting occurs inthe compressor when at position “1”, slowly turn theknob clockwise to position “start”. The reading of lowpressure gauge will decrease until the impacting stops.The pressure should be above “0”, because it cannotintake if the pressure is “0”.8. When liquid recovery is finished, turn the Switch toposition "2" for faster recovery.9. The unit will automatically stop when recovery is finished,please start the Purge operation now.16
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