The VecLoader Hepa Vac 721 is a completely self-contained, trailer
mounted, vacuum unit capable of evacuating asbestos fibers and any other hazardous waste
stream requiring HEPA filtration. At an operating rate of up to 23 tons per hour, the Hepa
Vac 721 transports material through a 6" inch smooth bore suction hose at distances
up to 1,200 feet. In addition, several 2 ½ inch or 4 inch suction hoses may be operated
simultaneously. From pick up to bagging, materials are captured in this fully enclosed,
negative pressure system. Only bagged materials goes to the dump. The Hepa Vac never
leaves the site, working continuously until your job is done.
From the pick up point, the collected material travels through the
hose to a cyclone separator, where it is bagged directly from the vacuum. Bagging is
accomplished using a new, totally enclosed valve assembly designed especially for the Hepa
Vac 721. It allows an operator total control of the bagging process by isolating the
material as it flows from the cyclone collector into the collection bag. To give you
flexibility in positioning the bagging station at the job site, the cyclone separator
discharge spout can be elevated to any position up to 8'6" above the ground. At the
pick up point, one man operates the suction hose. At the bagging station, another man
fills and removes the bags. It's simple, fast and safe.
The Filtering Process
The first filtering stage consists of a series of water injection
nozzles positioned at he cyclone separator inlet. Incoming material can be monitored to
determine whether it is being sufficiently wetted with additional water being added at the
inlet as required.
Once the material enters the cyclone separator, it decelerates and
falls into the discharge cone of the cyclone where more water may be added if needed. This
is the second filtration step.
During the third stage of filtration, fines remaining in the air
stream are captured by a set of filters which are continually self-cleaned by reverse
pulses of high pressure air.
The fourth filtration stage is the HEPA filter. Located on the
negative side of the vacuum pump, it is your final assurance that all state and federal
guidelines for air filtration are met. The HEPA filter is continuously monitored
throughout the vacuum cycle to guard against filter system failure. An alarm sounds
immediately, when the HEPA filter becomes loaded. The system will automatically shut down
and cannot be restarted until the HEPA filter problem is corrected.
The Hepa Vac does not rely on the HEPA filter alone for particle
removal. With its series of four filtration stages, the Hepa Vac 721 is a unique,
state-of-the-art abatement vacuum machine. It is engineered to provide the highest levels
of safety and operator control during the entire material removal process.
The Hepa Vac Gives You More Control
The Hepa Vac 721 gives you more control and flexibility. It allows
you to accomplish your job in the most expedient manner possible. Here's why.
Productivity Gains
Proper supervision helps you to tightly control a work area and
closely monitor the results. The Hepa Vac 721 reduces the required manpower and the
complexity of the removal process and permits a corresponding increase in supervisory
effectiveness. Use of the Hepa Vac means you will realize greater productivity and
improved site sanitation with an added measure of safety…all at a lower cost to you.
Reduced Bag Handling Usage
Reduced bag handling (75% fewer bags carried a shorter distance by
fewer men) greatly decreases the risk of unplanned decontamination problems. You can
accomplish more work in less time while reducing container and dump charges in the
process.
Reduced Manpower/Support Requirements
Reduced manpower conserves support items such as uniforms,
respiration equipment, decontamination supplies and tools. Diminished support
responsibilities like record keeping, periodic medical exams, transportation and lodging
costs translate into direct, bottom line savings. Given the greater efficiencies realized
in controlling these details, more effort can be invested in the professional development
of your most productive removal program. Using the Hepa Vac gives you precise control over
your operating overhead and some very distinct advantages in the bidding process.
Other Benefits
Incidental negative air flow at the point of removal offers
additional worker protection and further containment area security in the form of lower
fiber counts.
Additional Features
Should a poly bag rupture, an auxiliary vacuum port and water hose at
he bagging station allows the bagger to immediately wet down, vacuum and return the
material to the cyclone separator.
A locked control panel assures that components remain secure and
tamper proof.
