ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual page 844

Blower inlet and outlet are temporarily capped to keep out dirt and other contaminants during shipment. These
covers must be removed before start-up.
The internal surfaces of all Sutorbilt units are mist sprayed with a rust preventative to protect the machine during
shipment. Remove this film upon initial startup, using any commercial safety solvent. Position the blower so that
the inlet and discharge connections are in the vertical position (vertical airflow). On vertically mounted units, it will
be necessary to lay the unit on its side supporting the ends of the unit so as not to restrict the port on the bottom
side. Place a shallow pan on the under side of the unit. With the blower disconnected from power, spray the
solvent in the top port, rotating the impellers by spinning the shaft manually. Continue this procedure until the unit
is visibly clean.
E-101