ZL-20T 20 Ton Industrial FRP Counter Flow Cooling Tower - Maintenance Technician
The ZL-20T low-maintenance design minimizes service frequency while maintaining reliable operation:
Weekly checks (15 minutes): Visual inspection of fan motor, float valve operation, basin water level, and basin cleanliness. No tools required.
Monthly checks (30 minutes): Fan motor amp draw measurement, water treatment chemical level check, and eliminator visual inspection. Requires basic multimeter.
Quarterly checks (1-2 hours): Head loss measurement at design flow, fill media inspection for fouling, and water quality testing. Requires flow meter and water test kit.
Annual service (4-8 hours): Fan motor bearing lubrication, eliminator cleaning, fill media inspection with treatment if needed, and full performance verification.
The ZL-20T maintenance spare parts inventory recommendation for plant operations:
Critical spares (always on-hand): Float valve assembly, fan motor bearing set, eliminator section (2-3 pieces), basin water level sensor.
Annual replacement parts: Fan motor (replacement at 8-10 years), eliminator full set (replacement at 10-12 years), fill media (cleaning at 3-5 years, replacement at 12-15 years).
Tools required: Multimeter, basic hand tools, flow meter for head loss check, water hardness/pH test kit. Specialized tower tools (e.g., fan puller) recommended for fan replacement.
For plants operating multiple ZL-20T units, centralizing spare parts at one location enables rapid response to any tower service need.
Effective water treatment extends ZL-20T service life and maintains thermal performance:
Scale prevention: Maintain water hardness below 500 ppm CaCO3 equivalent. Use scale inhibitor chemicals (phosphate-based) at 5-10 ppm residual.
Biological control: Weekly algaecide dosing at 1-2 ppm chlorine equivalent. For warm climates (above 25°C ambient), increase frequency.
pH control: Maintain pH 6.5-8.5. Outside this range accelerates corrosion and reduces biological control effectiveness.
Blowdown schedule: Weekly 5-10% water replacement to prevent dissolved solids accumulation. Higher blowdown frequency for high-dust environments.
For plants with existing water treatment infrastructure, the ZL-20T uses standard treatment chemicals compatible with most cooling water programs.
Maintenance technicians diagnosing ZL-20T performance issues check three primary parameters:
Issue 1: Approach temperature degradation (>7°C instead of 5°C)
Likely causes: Fill media fouling, air recirculation, water distribution nozzle blockage. Action: Clean fill media with water treatment, inspect nozzle patterns.
Issue 2: Excessive fan motor amp draw (>1.8 A vs 1.5 A nominal)
Likely causes: Bearing wear, fan blade fouling, voltage imbalance. Action: Replace bearings, clean fan blades, verify 380V 3-phase balance.
Issue 3: Basin water level fluctuation
Likely causes: Float valve malfunction, makeup water supply pressure issue, leak in basin. Action: Replace float valve, verify supply pressure 200-400 kPa, inspect for leaks.
Fan motor service life in the ZL-20T is typically 8-10 years under normal operation. Replacement procedure:
Step 1: Disconnect power supply at distribution panel. Verify zero voltage with multimeter at motor junction box.
Step 2: Remove fan guard. Mark fan blade orientation on shaft before removal to ensure proper reassembly.
Step 3: Loosen motor mounting bolts, lift motor and shaft assembly using fan puller tool. Inspect shaft bearings.
Step 4: Install replacement motor (0.55 kW 380V 3-phase 1440 rpm IP55 Class F). Align shaft to within 0.1 mm using dial indicator.
Step 5: Verify rotation direction matches arrow on fan housing. Reverse any two power leads if direction is incorrect.
Step 6: Run motor unloaded for 1 hour to verify amp draw and temperature. Then reinstall fan guard and resume operation.
Total replacement time: 2-3 hours for experienced technician. Replacement motor cost: USD 80-150 depending on local supplier.
Quarterly head loss measurement at design flow is the most reliable indicator of ZL-20T internal condition:
Baseline head loss (new tower): 14 kPa at 16 m³/h design flow.
Normal operating range: 13-16 kPa. Within 2 kPa of baseline indicates clean fill media.
Warning threshold: >18 kPa indicates fill media fouling. Schedule cleaning within 30 days.
Critical threshold: >22 kPa indicates severe fouling. Risk of pump cavitation. Immediate cleaning required.
Trending head loss over time reveals fouling rate and informs cleaning intervals. Plants with aggressive water treatment maintain baseline head loss for 5+ years; those without treatment see 2-3 kPa drift per year.
From engineering specifications to operational hand-over, the ZL-20T platform is configured for ten distinct application profiles. Explore the other nine below:
Quick Specs: ZL-CT40 industrial round cooling tower with 40-ton cooling capacity, FRP material, counter-flow design, 1.5kW fan, CE certified. Best for industrial chiller systems and mid-scale manufacturing. The water cooling tower is a device used for cooling circulating water. By exchanging heat between hot water and air, the water temperature is reduced, thus realizing the repeated use of circulating water. Water cooling towers are widely used in industrial production, air conditioning systems and other fields, and are of great significance for saving water resources and reducing energy consumption.
Quick Specs: ZL-CT60 round shape water cooling tower with 60-ton capacity, counter-flow design, FRP material, 1.5kW fan, CE certified. Best for industrial chiller systems and large-scale cooling. A water cooling tower is a device used for cooling industrial water or other liquids. Its main function is to cool down hot water through heat exchange between hot water and air so that the cooled water can be recycled.
Quick Specs: ZL-CT100 FRP round cooling tower with 100-ton cooling capacity, FRP material, 2.2kW fan, CE certified. Best for large-scale industrial cooling and high-capacity chiller systems. The counterflow cooling tower is a common type of cooling tower. It sprays hot water from top to bottom and air flows from bottom to top, enabling hot water and air to exchange heat in the packing, thereby reducing the water temperature. The counterflow cooling tower has the advantages of high cooling efficiency, compact structure and small floor area, and is widely used in industrial production, air conditioning and refrigeration and other fields.
Quick Specs: ZL-CT square drop counter-flow cooling tower with FRP material, multiple capacity options, CE certified. Best for high-temperature industrial water cooling and open cooling tower applications. The square cooling tower has the advantages of small floor area, beautiful appearance, and convenient installation. It is widely used in fields such as air conditioning and refrigeration and industrial cooling, providing effective cooling guarantee for the normal operation of various equipments.
Quick Specs: ZL-CT factory-direct industrial cooling tower with multiple types and capacities, high-efficiency design, CE certified. Best for industrial cooling applications and large-scale manufacturing. A cooling tower dissipates heat from industrial or air - conditioning systems. Its working principle involves spraying hot water onto packing to form a water film, while air flow carries away heat from the water to lower its temperature. The cooled water is recyclable, saving water resources and reducing costs. There are various types, such as open and closed cooling towers. Open ones contact outside air directly, making water prone to contamination but with lower costs. Closed ones have water circulating in sealed pipes, ensuring cleaner water but usually at a higher price. Cooling towers play a key role in fields like power plants, chemical plants, and data centers, helping maintain system operation and improve energy utilization efficiency.
The ZL-10T 10 Ton FRP Counter Flow Cooling Tower from Zillion delivers reliable cfo procurement performance. Key specifications include: ZL-10T 10 ton FRP counter flow cooling tower at USD 850 EXW 5-year TCO: USD 850 capex + USD 2,971/year opex Volume discounts: USD 765 (10+), USD 680 (50+), USD 595 (100+) Payment terms: T/T 30/70, L/C, Western Union, Alibaba Trade Assurance 18-month payback vs USD 4,500 air-cooled alternative Annual spare parts budget: USD 180 EXW Dongguan, lead time 7-15 days CE certified for global deployment Designed for industrial-grade cfo procurement applications, the ZL-10T combines proven FRP counter flow technology with precision-engineered components for 15-20 year service life. CE / ISO 9001:2015 certified. Contact Leika at Leika@gdzillion.cn for quotation.
The ZL-10T 10 Ton FRP Counter Flow Cooling Tower from Zillion delivers reliable maintenance tech performance. Key specifications include: ZL-10T water chemistry: pH 6.5-9.0, Ca hardness
The ZL-10T 10 Ton FRP Counter Flow Cooling Tower from Zillion delivers reliable epc contractor performance. Key specifications include: ZL-10T concrete pad: 600x600x150 mm C25/30 mix Wind load rating: 0.5 kPa for open terrain Piping connections: DN50 inlet/outlet, DN15 makeup, DN50 overflow 46 kg dry weight enables two-person ground-level installation Rooftop lift: portable gantry rated 250 kg Electrical: 380V 3-phase 50Hz, 1.2-1.5 A FLA VFD option for 30-60 Hz variable-speed operation 12-point pre-commissioning checklist Designed for industrial-grade epc contractor applications, the ZL-10T combines proven FRP counter flow technology with precision-engineered components for 15-20 year service life. CE / ISO 9001:2015 certified. Contact Leika at Leika@gdzillion.cn for quotation.
Our company's series of products are well-known in the plastic auxiliary machinery industry for their excellent performance and high cost performance.
IPv6 network supported
English 
English
español
العربية
