Gorman-Rupp Pumps UNIT 608 1395614 and up - Manual (Page 17)

OM-01228 UNIT SERIES
OPERATION PAGE C - 4
Cold Weather Preservation
In below freezing conditions, drain the pump to
prevent damage from freezing. Also, clean out any
solids by flushing with a hose. Operate the pump
for approximately one minute; this will remove any
remaining liquid that could freeze the pump rotat­
ing parts.