Systems are available in two filtering system configurations. The following diagram shows solution flow:
IN-LINE SYSTEM: Wash Pump è Filter è Manifold (PBM)
LOOP SYSTEM: Filter Pump è Filter è Eductor nozzles (in reservoir)
The In-Line System ensures that the entire solution flow that discharges the wash nozzles is filtered. The loop system enables continuous filtering of the washer solution reservoir.
IN-LINE Filtration System:
All solution flow from the Main Pump is filtered before being discharged from the Power Blast Manifold (PBM). A permanently piped Bag Filter Housing with large area heavy-duty Strainer Basket and low pressure drop across the Filter Element is provided. Standard filtration is 50 micron with a complete range of optional filtration levels. Carbon steel Filter Housings rated in excess of full system pressure have a swing-away sure-seal lid with O-Ring seal. Filter bags are inserted into the Housing from the top. The Housing cover swing-bolts are easily opened without special tools and the bags are easy to clean. Differential Pressure Gages before and after the Filter signal when servicing is required. Gages are protected and isolated from the cleaning solution via a glycerin filled Diaphragm Isolator. Glycerin filling also dampens the normal gage vibrations to make reading easier.
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Large capacity housings reduces the need for frequent clean out. Drain Port in bottom of Filter Housing allows for complete draining for cleanout. MART-engineered Loop Piping and Swing-Check Valve prevent siphoning of Filter Housing through PBM after wash cycle to reduce water hammer at start-up and provide effective rinse. All flow connections outside of the Washer Reservoir are flanged with gaskets for reliable maintenance-free service. See the section below for Filter Element sizing guidelines.
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LOOP Filtration System:
Solution in Washer Reservoir is continuously filtered. A dedicated 3-horsepower Centrifugal Filter Pump draws solution from the Main Reservoir and pumps it through the Filter Housing. Solution is returned to the Reservoir through special "Eductor" Nozzles. The "Eductor" Nozzles agitate the solution to maximize particle filtration. A venturi effect causes a 5 to 1 flow rate enhancement that maximizes solution agitation. System has a permanently piped Bag Filter Housing with large area heavy-duty Strainer Basket to minimize pressure drop across the Filter Element. Standard filtration is 50 micron with a complete range of option filtration levels. Carbon steel Filter Housings rated in excess of full system pressure have a swing-away sure-seal lid with O-Ring seal. Filter bags are inserted into the Housing from the top.
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The Housing Cover swing-bolts are easily opened without special tools and the bags are easy to clean. Differential Pressure Gages before and after the filter signal when servicing is required. Gages are protected and isolated from the cleaning solution via a glycerin filled diaphragm isolator. Glycerin filling also dampens the normal gage vibrations and makes reading easier. Large capacity Housings reduce the need for frequent clean out. Drain Port in bottom of Filter Housing allows for complete draining for cleanout. See the section below for Filter Element sizing guidelines.
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FILTER ELEMENT SIZING GUIDELINES:
Bag filters are generally recommended for 50-100 microns, although they can filter down incrementally to 1 micron at lower flow rates. Bag filters are less expensive than cartridge filters, easier to change, and are re-usable. Bags are constructed of polypropylene or nylon that performs reliably in a hot, caustic environment.
Options: Cartridge filters may be used in the Filter Housing and are rated for 1-50 microns. Multiple filters may be inserted into the Housing.
The following table shows micron comparisons to guide you in selecting filters:
