... 5.Stainless steel can be submitted installation&maintenance instruction ,operation/s manual,quality certificate and factory testing report. a) Automatic alarm ... oilpulls down, over speed, over load and over currentb) Operation display: i) Unit voltage, tri-phase load current and ... oilpulls down, over speed, over load and over currentb) Operation display: i) Unit voltage, tri-phase load current and ...