Twin Cyclone Bus Vacuum System - Portland, OR (Center Street Facility)

System Description:

Technical Information

Number of systems:	Two
Went into operation:	June 1998
Air volume:	26,500 CFM
Horsepower:	50 HP
Noise level:	91 dba (dampers open) 88 dba (dampers closed)
Collection containers per system:	Two 3 cubic yard front loading trash containers
Compactor:	None
Total busses cleaned daily:	247
Time needed to fill one container:	1 to 2 days
Air filtration:	Yes
Environment:	Uncovered outside location
Discharge air location:	Outside
Service island width:	74"
Ceiling height:	Not applicable

System Report

The TRI-MET Center Street facility in Portland, OR, placed the greatest challenge to date for Robertson Air Systems. Vacuuming the entire fleet of 247 busses daily on two fuel lanes required more bus vacuuming performance than any other facility known to us.

In June of 1998, Robertson Air Systems successfully installed two bus vacuum systems that pull up to 26,500 CFM. An excellent seal between the bus and bellows is being achieved on most busses. The tremendous air movement through the busses during vacuuming is daily successfully cleaning all the busses.

The Center Street Facility has a service island width of 74" (the same as the TRI-MET Powell Street Facility) and is the narrowest space into which a twin cyclone bus vacuum system been able to fit.

The system has been in virtual nonstop operation from start up in June 1998 and we look forward to successful operation for many years to come.

Contact TRI-MET for a first hand report at the following:

Mr. Mike Doty, Maintenance Supervisor
TRI-MET
9800 S.E. Powell Blvd.
Portland, OR 97266
(503) 701-9205

Please do not hesitate to contact us if you need more information about twin cyclone bus vacuum systems or if there are any questions at the following: