OPERATING AND UNLOADING TIPS
NOTICE Variations or deviations to the unloading procedure may be necessary due to the type of product being unloaded or the nature of the unloading site. Operat- ing more than one hopper at a time is common with extremely large capacity blowers or a combination of compressor and blower. A second and third hop- per can be activated and maintained with a desirable product to air mixture.
MINIMIZING UNLOADING TIME The MAC Trailer pneumatic tank trailer is designed to be one of the fastest pneumatic discharges in the industry. However, unloading time will depend on variables such as type of product being unloaded, unloading site, condition of equipment, etc. The following points should be considered. 1. Vertical positioning of discharge hose results in smoother product flow. Product tends to “settle” in portions of hose which runs horizontally (see Horizontal Flow graphic below). This accumulation of product will restrict product flow, will in-crease unloading time, and may eventually clog the line. 2. Comparing product flow through a hose in the vertical portion of hose (see Vertical Flow graphic below). It is readily seen that vertical positioning of hose results in smoother product flow. If discharge hose must be run horizontally for any considerable dis-tance, elevate the hose at intervals to create slight “humps” in the hose. This will help keep the product flowing freely.
VerƟcal Flow
Horizontal Flow
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