e-fly dirty water float switch

e-Fly Float Switch– dirty water can’t touch this!

The e-fly always remains in the correct position because of the integrated counterweight. An external counterweight (and the ragging point that it creates) is not necessary.

Like its big brother, the Mac5, the e-fly dirty water float switch is available with PVC, H07RN-F and H07BN4-F in 5, 10 and 20m lengths. The e-Fly is also available (as a special order) with ATEX certification (in the same cable types and lengths).

How to configure the e-fly Float Switch

There are two main ways the e-Fly is used:

• Slaved to a single pump for emptying a tank. You can either wire the float switch into the pump with a suitable t-joint or outside of the tank itself using a simple junction box.
• 

  e-fly dirty water float switch installation options

  Or, as part of a level control setup. As this diagram shows, the e-Fly is suspended from the top of the tank (or attached to an internal pipeline /fixture. The pipework must be sturdy enough to support the extra weight). The level is adjusted on each float by shortening the cable or lifting the attachment point onto an internal fixture.

This array can then be connected to a controller creating a versatile level control system for sewage or turbulent water.

Overall the e-Fly can be deployed in a very similar way to the Mac5 – but where it truly excels in areas where the sheer size and mass of the Mac5 are not required. For a domestic sewage treatment plant the e-Fly is perfectly at home.

For more information

Contact Jim, our Mac3 Technical lead. Jim and Tom have over 25 years of experience in Water Control Systems.

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If you closed your eyes and pictured a float switch – I’d wager you imagine the Key from Mac3.

The Key is a solid and straightforward float switch, with the expected attention to detail you would expect from Mac3. Simply put, they work! There isn’t much I can say about these other than these blue and yellow float switches are a familiar fixture on OEM float-switched pumps worldwide.

The Key is available in PVC and H07RN-F cable types, in 2, 5, 10, 15 and 20m lengths. The Key is installed with a counterweight on the cable or with the cable restrained to a pump or internal fixture of a tank installation.

Where the Key Clean Water Float Switch can be Installed

The Key is suitable for use with a tank level controller, pump float switch modification or a complete tank and pump control system.

The Key is particularly suitable as a hardware dry-run protection measure. The Key, wired directly into the mains feed to a pump (with an IP68-rated connector) or using a junction box outside the tank, will isolate the pump when the water level drops below the level set at installation. Using the Key for dry-run protection is particularly useful with centrifugal pumps (as they will require re-priming if they run dry) or when using a submerged pump that requires immersion for cooling.

Conversely, the Key can be employed as part of a top-up system for filling the tank or simply as tethered float switch – positioned at the maximum required level of the tank itself. It can then either be wired into a controller for a manual pump or wired into an automatic pump.

The Key is a nigh-on universal float switch for clean water applications and certainly worth keeping in mind when replacing a failed float switch in situ.

For more information

Contact Jim, our Mac3 Technical lead. Jim and Tom have over 25 years of experience in Water Control Systems.

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Small Clean Water Float Switch by Mac3

The Small, like all Mac3 float switches, shows the care and attention given to the design and fabrication that have made these units a favourite of OEM pump manufacturers around the world. The Small is available in 2, 5, 10 and 20m lengths of both PVC and H07RN-F.

While the Small can be used in place of any clean water float switch, it really comes into its own when working with smaller pumps, like one powering a small garden water feature. By virtue of its size (approx 82mm diameter, about 3.25 inches), a Small is easy to install in a pond, sump or small/narrow tank. Not to mention that, some of these pumps look a little strange with a large float switch attached to them!

The Small is also ideal for attaching to a drainage pump with a waterproof IP68-rated t-joint. The pump and float can then be dropped into a flooded area, like a utility room or cellar and left to drain down until the water level has dropped enough to drop the float switch, protecting the pump from overheating.

The Small is ideal for those little areas where you need a suspended float switch and there isn’t room for anything larger. For areas that are really tight see the Reka or Agma 22 float switches.

Tethering (Tethered Float Switch)

There is also the option to use the Small as a tethered float switch – as seen on many OEM pumps. The Small can be connected directly to the pump itself. This is done either with a specific watertight connection to the pump itself or tethered directly to the body of the pump by means of cable ties. If retrofitting a pump with a tethered type setup, I’d personally use a good quality cable tie (stainless steel ones work rather well) and set the length of cable between the pump and float switch at the desired moving point.

Overall, the Small is a useful float switch to keep around.

For more information

Contact Jim, our Mac3 Technical lead. Jim and Tom have over 25 years of experience in Water Control Systems.

The post Small Clean Water Float Switch appeared first on Mac 3 UK.