Suppliers of Filters and Pumps to the Mechanical Services Sector

For Cooling Towers

For Cooling Towers

INLETRaw Water

Controller

Suction Nozzle

Fine Screen

Flush Valve

Coarse Screen

Rotor

OUTLETFiltered Water

Dirt Collector

What is Sidestream Filtration?Sidestream filtration, as the name suggests, refers to the partial filtering of liquid in a system. Incooling water systems, this is generally sized on 5-10% of the total cooling tower water flow rate.Masterflow Solutions has developed the most advanced package on the market, that is both compactin design, and provides an effective filtration that surpasses the traditional methods used in the past.

flushing or ‘vacuum clean’ effect on the FineScreen (2) with a high velocity suction jet of waterfrom the clean outlet side of the screen, removingthe dirt on the screen as it passes through.

The water escaping via the Rotor (7) causes theDirt Collector and Suction Nozzle assembly (3 &4) to rotate. The Flushing Valve (5) allows thisassembly down the length of the Fine Screen (2)in a spiralling motion, cleaning the entire screensurface area in approximately 5 seconds. TheFlushing Valve (5) closes, and returns themechanism back to its original position, ready forthe next cycle. Cleaning also occurs on the returnstroke.

During normal filtering mode the raw water entersthe Inlet of the filter, passes through the CoarseScreen (1), (this removes large debris that mayobstruct the lower mechanism). Water thentravels to the inside and through the Fine Screen(2) to the Outlet.

The solids in the water are trapped on the FineScreen (2), eventually causing a pressure drop(DP) across the filter. At a pressure drop of 40 –50 kPa the Controller (6) activates the cleaningcycle by opening the Flush Valve (5) to drain(atmosphere).

The interconnection of the Suction Nozzles (4) viathe Dirt Collector (3) to the Drain causes a back

Operation:

Outstanding Features:ü Fully hydraulic and self-cleaningü Dry-run protectionü Uses minimal water during backwash, backwashing on pressure differentialü The suction scanner innovatively uses filtered water to produce a reverse flow regime for

highly effective debris removal from screen.ü Materials of construction are thermo-plastic, stainless steel and PVC rendering as corrosion

free as possibleü Volt free contacts for BMSü Compact designü Already mounted on its own free standing skidü Minimal amount of water used for backflushing compared to sand or cyclone filtersü Eductor system essential for basin cleanlinessü No media (sand) and therefore no haven for the buildup or breeding of bacteria

How to specify:Provide a packaged screen type side stream filtration system, Masterflow Model CTFP-3-A2-13 forthe periodic filtering of cooling tower water, and comprising of the following equipment, (as suppliedby Masterflow Solutions - Phone: [02] 9748 2022).

· BAKER-BLOC motor pump in CI/BR/SS or SS/SS/SS construction capable of delivering aminimum of 7% of the total cooling tower flow rate

· Fully automatic self-cleaning, hydraulic operated screen filter using pressure differential asthe motive for self-cleaning. Alternative filter types will not be accepted

· Eductor nozzles for basin ‘sweeping’ (supplied loose)· Inlet, outlet and drain flanges conveniently located for ease of installation.· Pipework is PVC, Class 12.· System operates on 3 phase, 415V, 50 Hertz.· Control panel mounted on base with pump and micro-switch wafer check valve pre-wired.

Selection:

*This information is subject to change without notice.

Flow Range Package Model Pump Model Filter size

3.8 L/S – 7 L/S CTFP-5-T2-10 BB40-160 50mm

8 L/S – 14 L/S CTFP-9-T3-22 BB50-160 80mm

14 L/S – 23 L/S CTFP-16-T4-26 BB65-160 100mm

For Cooling Towers

Installation Diagram: