RS-3 dual voltge rotary vane vacuum pump

Model		RS-3S-1
Voltage		220V/50HZ	110V/60HZ
Pumping Speed	CFM	4	4.7
Ultimate Pressure	Pa	10
	Microns	75×10-2
	Mbar	0.1
Power	W	250
	HP	1/3
Rotating Speed<rpm>		1440	1720
Oil Capacity<ml>		300
Dimension<mm>		320*128*246.5
Weight<kg>		12

This kind of pump is widely used for vacuum refrigeration, mechanical printing, automobile reparation, refrigerant recovery devices, photo-engraving, vacuum packing and so on. 
1. Power plug:make this connection with different power plugs easy
2. Power supply conversion switch(red one):make sure this switch is set on the right place before your operating:110V or 220V
Features:
1. Operating at dual voltage and dual frequency.
2. 220V/50Hz   &   110V/60Hz.