The motor and {HEAD ~ blower} can be removed as {TAIL ~ a single unit} to allow the motor to be easily replaced or repaired, and to allow for the inside to be inspected during and after installation 
The motor and { HEAD ~ blower } can be removed as { TAIL ~ a single unit } to allow the motor to be easily replaced or repaired , and to allow for the inside to be inspected during and after installation
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH