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PAC can only coagulate solids in stable pH conditions. pH levels between 7.0 and 8.0 should be maintained at all times. Topline do not recommend that pre-filter chlorination (or pH correction) be applied with PAC installations as the pH will locally fluctuate during injection, leading to poor efficiency of ‘floc’...
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Installation. The pump should be mounted on a suitable wall, or mounting board, directly above the carboy/bund for the PAC and can be mounted using the four screws and wall plugs supplied. The pump is disassembled to fix to the wall, by removing the front face plate, then unscrewing the pump body from the rear mount plate.
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The Topline peristaltic dosing pump is supplied with 15m of dosing hose, which should be run in a protective/carrier conduit for the entire run. We would recommend 20mm or 25mm uPVC electrical conduit for this purpose.
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0.1ml/m /hr. The Topline peristaltic dosing pump has a maximum output pressure of 1.5 Bar. The output of the dosing pump should be checked against the dose rate chart to ensure that either a higher or lower back pressure is not overrunning or impairing pump output.
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The pump output is set by choosing the higher or lower dosing range, with the selector switch, and then carefully rotating the potentiometer from 1 –10 clockwise to increase the pump output from 1.5 to 150ml/hr Selector Switch Potentiometer Dose Rates (at 0.1ml/m /hr PAC) Switch Position 1 Switch Position 2...
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Operation There is no operational procedure to follow. The Topline Peristaltic Dosing Pump is set to run 24 hours per day, all the time the circulation is in operation. The general usage of PAC should be noted over a period of days/weeks to identify when the pump is losing efficiency.
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