20W Silent Quiet Oxygen Air Pump Large Aquarium Fish Tank Efficient AC/ 220V

Specification:
Plug: US
Voltage: 220V-240V/50Hz
Plug: US
():0.012MPa
Output:20L/min
Cable length: Approx.140cm
Size: Approx.24x15.5x125cm

Features:
AC/ switch automatically.
Low automatic protection.
Continuous operation and long life.
Suitable for aquaculture,fresh aquatic products sales stalls,chemical and ,
which needs oil free compressor and uninterrupted air supply.
Indicator light:
Yellow: Charging
Green: Working
Red: Alternating current

How to use:
, rotating switch clockwise, the indicator light will turn green when the is connecting. You can adjust the volume of air freely by controlling potentiometer.
AC, pluging the socket into the 220V , the indicator light will turn red. Then repeat the same process.

Charging method:
You can acheive the charging by inserting the socket through AC 200V( can still work while charging). The yellow indicator lights up means charging is completed. We recommend that youd better not unplug the socket for 2 houes after charging completed.
Please note:
Place the machine above water level to protect water from flowing backwards,or it should be connect with a non-return valve.



a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a