... F1, F3, add pure water into water inlet of motor, emit air in the motor water inlet, after being full of water, open power switch, closed ... -filtration, first, take out the filter, element, Put water inlet & water outlet of ultrafiltration into water tank, start power switch to wash it again ... should be below 45°C.8-2 To screw flexible hose clamp after 2-4hrs work8-3 Filter newly-made ultrafiltration ...