12.7 Check each valve for leaks. NOTE: It is normal for the bleed air port to release a burst of air at each pulse.
12.8 Check the adequacy of air supply by assuring no less than 35% drop in pressure during pulse.
13.0 FILTER INSTALLATION
13.1 Should the filters be shipped separately from the collector, then they must be installed, as follows, prior to start up.
NOTE: Electrical power and compressed air supply MUST be disconnected before beginning the filter installation.
13.2 Inside the collector unit, ensure that the horizontal flange around the vertical venturi is clean. Take care NOT to damage the filter cartridge. Place the filter cartridge with the gasket side down on the flange. Rotate filter slightly to assure no binding and proper location on the flange.
13.3 Most AMTECH ATV dust collectors utilize two filters, stacked vertically on each venturi. Position the second filter directly on top of first, gasket side down, concentric with lower filter.
13.4 Place the filter cap with gasket side down, concentrically, on top of the second filter cartridge. Turn the “T” handle, clockwise, down a gainst filter cap so that the dimple penetrates the threaded bore of the “T” handle. Continue to rotate “T” handle until gaskets are approximate ly 30% compressed. (If over tightening you will see the outer edge of the filter pleats begin to curve.)
14.0 START UP
14.1 It is recommended that new filters be properly pre-conditioned with pre-coat before start up. Please contact your Clean Air Industries Distributor for assistance. Start system fan and confirm the designed air volume and actual air volume are within 10%. If the air volume is more than the designed volume, then adjustments should be made to reduce the actual volume to within 10% of the designed volume.
14.2 If the air volume is low, and the filters are NOT contaminated then adjustments should be made. Consult your Clean Air Industries Distributor.
14.3 Apply compressed air to the manifold. Turn the reverse jet pulse control on. Apply power to other auxiliary equipment as required.
14.4 COMMENTS REGARDING FILTER DIFFERENTIAL PRESSURE DURING OPERATION:
14.4.1 Depending on operating conditions, dust loading, and the air-to-cloth ratio, reaching equilibrium for filter differential pressure may vary from a few hours to several weeks. Low dust loading will normally develop 2- 3”w.g. , normal loading typically generates 3- 6”w.g. , and high loading varies from 6 - 10”w.g. 14.4.2 Low dust loading typically shows a steady level of differential pressure with very little fluctuations once equilibrium is reached. By contrast, heavy loading can produce s ignificant “Ups and Downs” in operating differential pressure. 14.4.3 M ake immediate “Off - Time” time reductions on the timer board dial if significant increases in operating differential pressure become realized. However, if differential pressure drops, monitor the system before increasing the “Off - Time”, and then only in small steps.
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