An automatic tube cleaning system (ATCS) only delivers its end-difference benefit if the unit is matched to the condenser, not pulled from a catalogue. Selection starts with the tube, not the brochure.
The Operating Reality
A chiller or condenser on a cooling tower is served by an ATCS skid: a ball reservoir, two strainers and a launching/collecting chamber on the water box. Balls circulate every cycle, sweeping the tubes with no shutdown.
Why It Matters
Wrong ball oversize jams the strainer; wrong grade scores the tube; wrong sizing leaves tubes unswept. The selection points below keep the system inside its operating window across the plant’s real duty range.
Key Selection Points
- Tube diameter (DN100-500) defines ball size and the number of launchers; larger condensers need multiple chambers, sized to tube count, not just flow.
- Ball oversize of ~0.1 mm holds a positive sweep without jamming the strainer screen at continuous duty.
- Tube metallurgy (titanium, copper-nickel, stainless, carbon steel) sets ball grade so the sponge matrix cleans without scoring the wall.
- Control logic should track chiller cycles and differential pressure, launching balls on a schedule tied to running hours rather than a fixed wall clock.
- Water-box access (single or dual) decides chamber layout; retrofit units use clamp-on chambers to avoid re-piping the water box.
Selection Checklist
- Confirm condenser tube count, diameter and metallurgy from the nameplate before sizing launchers.
- Match ball grade to metallurgy and oversize to ~0.1 mm above tube ID.
- Size launchers to tube count and plan chamber placement for single- or dual-water-box layout.
- Define the launch trigger (running hours / DP rise) and fail alarms (low ball count, strainer block).
- Plan the tie-in to the chiller control so cleaning runs without an operator and without a shutdown.
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FAQ
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