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Regardless of how well designed the C-Thru®Separator is, if you can not get the oil from the sump to the unit in an efficient manner then the C-Thru®Separator can not do its job in removing the oil. The current pump and float design does work extremely well when utilized correctly. Setting up the float and pump correctly involves three critical steps.
The first step is to ensure the standard pump is immersed in the sump in every application. The pump is rated to work outside the sump, however, it is not self priming.Therefore, trying to utilize the pump outside of the sump leads to priming issues and air entrainment which can lead to an unsatisfied customer.
The second crucial step is to ensure the float hose is at optimal length and the float is level in the sump. We package the unit with 1’of tubing attached to the float with an additional 3' if needed. The float tubing must be at proper length to ensure proper function. For most applications the 1' of tubing already attached is sufficient. The ideal float length is where it allows the float to move up and down with the solution while the float remains level. Excess length can cause the tubing to go higher than the float which leads to air getting in line and usually a tilted float. Since the pump is not self priming you create an air block and the pump will not work. If the tubing is too short, then you drag the float below the level of the surface where the contaminant has already collected. The third critical step is ensuring a vortex is being created on top of the float. A vortex should be created on top of the float when the pump is turned on and the float is level. This allows for a nice flow from the top of the sump where the tramp oil is located to the C-Thru®Separator. If oil is not being drawn into the float, but you are pumping at an expected flow rate (2-4 gpm) and the float is level then adjust float balls down on the float. If you observe too strong of a vortex in the float then air can be entrained into the fluid which in turn can emulsify the tramp oil back into solution and render the C-Thru Separator ineffective! Adjust the balls upward on the float if too strong a vortex is observed.
Air entrainment via the float is a rare occurrence, however, should this occur the tramp oil will get emulsified back into solution and little to no separation will occur in the C-Thru®Separator. There should not be any foam in the C-Thru®Separator if there is not foam in the sump.
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