For effective coupling, the shaft locking device and protective grease must be removed, which protects against corrosion of the shaft end and flange only prior to the installation of the motor.
The drain needs to be positioned so that drainage is facilitated at the lowest point of the engine. If there is an indicative arrow on the drain body, it must be mounted so that the arrow points downwards. Engines containing rubber drain plugs leave the factory in the closed position, needing to be opened periodically in order to allow condensed water to escape.
In the case of environments with high water condensation and motors with a higher degree of protection, the drains can be mounted in the open position. For engines that have a lower degree of protection, the drains must remain in the closed and open position only during engine maintenance.
Already lubricated engines of the mixed oil type must have their drains always connected to a specific collection system. It is advisable to check the direction of rotation of the motor, always connecting it before attaching it to the load.