CAMCORP Blower Package with Sutorbilt Blower - Manual (Page 4)

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CAMCORP, Inc.
Phone: 913-831-0740 ~ Fax: 913-831-9271
www.camcorpinc.com
PRINCIPLE OF OPERATION
CAMCORP blower packages are set up to provide air to a pressure conveying system or
vacuum required for a negative pressure system. Typically the positive displacement
blower used on such a package is not capable of supplying air to a pressure higher then
15 psig or vacuum greater then 14” Hg. Depending on the specific blower, it may have a
maximum pressure or vacuum capability of somewhat less than that. Because of
limitations involved, the blower, motor and line size of the system must be designed
specifically to meet the requirements of the system.
Because of the tight clearances used in the design and manufacture of the PD blowers,
they require filtered intake air. Proper maintenance of the intake filter will help insure a
long service life for your blower.
We recommend you give consideration to building certain precautions into your system.
Due to unforeseen circumstances your system may at some point experience an upset
condition. By allowing for this when setting up your system, you may minimize the
affect of such an occurrence. Three major areas should be considered: the positive
displacement blower, the motor and the integrity of the system controls.
Provided, as standard equipment on all of our blower packages is a mechanical relief
valve, which is factory set at or below the pressure or vacuum limit of the specific
blower. This protects the blower from overheating because flow is decreasing if a line
plugs or valve closes at the wrong time. This type of blower is not designed to run at
zero airflow.
A properly sized and installed motor starter provides protection for your motor. Hire a
qualified electrician to design and install the electrical service to your system.
The integrity of the controls for your system can usually best be maintained during an
upset condition by proper use of a pressure or vacuum switch. A pressure/vacuum switch
set two to three PSI/Hg. above the expected operating pressure of your system will allow
a high pressure or vacuum signal to initiate a preventative action. Check with
CAMCORP for expected operating pressure. This may involve stopping the infeed or
material to the system to allow it a certain time to clear itself or it may be as simple as
triggering an alarm to alert an operation to the condition.
Caution must be taken to be sure that any steps initiated by such an upset condition does
not create a problem or even a hazard elsewhere in your process. For example, your
upstream equipment may need to be shut down in a very specific sequence. In any case,
you need to analyze the affect on your complete process before establishing the actions
initiated by an upset condition.