Walchem WCTW100PNA Bleed & Feed Controller – Includes Single Biocide Timer, Conductivity Probe & Tee Assembly
Original price was: $869.00.$681.40Current price is: $681.40.22% OFF
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Model: WCTW100PNA
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Function: Complete bleed & feed control for cooling towers
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Biocide Timer: Includes one independent programmable biocide feed timer
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Probe Included: Comes with a conductivity probe for real-time monitoring
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Tee Assembly: Included for easy in-line installation of the probe
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Digital Display: Bright LCD for clear visibility and easy configuration
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Relay Outputs: Control bleed valves, chemical pumps, and alarms
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Power Supply: 115/230 VAC universal input
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Enclosure: NEMA 4X-rated – weatherproof and corrosion-resistant
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Mounting: Wall or panel mountable for flexible installation
Physical & Electrical Parameters
Review the structural, electrical, and control capabilities of the WCTW100PNA control panel:
Control Logic & Hardware Features
- Microprocessor Control: Digital signal processing prevents setpoint drift and provides stable sensor calibration.
- Biocide Feed Modes: Programmable as 28-day cycle, biocide feed with pre-bleed, or bleed lockout to maximize chemical contact time.
- Relay Output Rating: Mechanical relay contacts engineered to directly switch 115 VAC blowdown valves, metering pumps, and visual alarm beacons.
- Rugged Design: NEMA 4X heavy-duty housing protects internal electronics against ambient moisture, chemical vapors, and direct splash.
Primary Applications & Use Cases:
- Commercial HVAC Cooling Towers: Maintains water balance across evaporative condensers and HVAC cooling loops.
- Industrial Process Cooling: Prevents mineral scaling in heavy industrial heat exchangers and process chillers.
- Biological Growth & Legionella Control: Automates timed biocide additions to control algae, slime, and bacterial bio-films.
- Side-Stream Water Conditioning: Controls bleed-off and inhibitor feed in automated closed and open-recirculating fluid systems.
No replacement parts listed for this item yet.
FAQs
- What comes included with the Walchem WCTW100PNA controller package?
The WCTW100PNA package comes standard with the NEMA 4X wall-mount control panel, an industrial conductivity sensor probe, a matching inline tee mounting assembly, and the factory instruction manual. - How does the biocide timer lockout function work on this Walchem bleed and feed controller?
When the biocide timer activates, the controller injects biocide and engages a “bleed lockout” delay. This temporarily holds the blowdown valve closed for a user-set time period, ensuring the chemical has adequate contact time in the tower before automated bleed-off resumes. - Is this WCTW100PNA conductivity controller compatible with standard 115 VAC power lines?
Yes. The unit features a universal power supply that operates seamlessly on standard 115 VAC or 230 VAC inputs without requiring internal jumper configurations. - Where should the conductivity probe and tee assembly be installed in the cooling tower loop?
The conductivity probe and inline tee should be installed in a continuously flowing side-stream sample line taken from the pressure side of the re-circulation pump, upstream of any chemical injection points. - Can this Walchem cooling tower controller trigger external alarms?
Yes. The controller includes configurable output relays that can activate external alarm lights, audible horns, or remote telemetry systems when conductivity exceeds high or low limits.
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