The Ebbco Inc. Closed Loop Filtration System (CLS) is an industrial filtration system designed for waterjet applications. Its primary function is to reuse overflow water from a waterjet cutting machine's work tank by processing it to meet high-pressure pump specifications. The system aims to reduce water consumption and improve the efficiency of waterjet cutting operations by continuously filtering and recirculating the water.
Function Description:
The CLS operates by capturing overflow water from the customer's waterjet catch tank. This water first flows into a Settling Weir, which prevents large solids from entering the main filtration system. Inside the Settling Weir, a Pre-Filter Bag (Filter #5) removes debris 150 microns and larger, preventing it from settling into the dirty portion of the system tank. A float level assembly in the dirty tank maintains a consistent water level (10-14 inches) and supplies make-up water if the catch tank overflow is insufficient.
From the dirty tank, the system pump moves water through a series of filtration vessels. First, it passes through the Bag Vessel (Vessel #1), where an ultra-fine bag filter polishes the fluid to 1 micron. Next, the water enters the Hurricane Filter Vessel (Vessel #2), where a hurricane filter cartridge removes particles above 0.35 microns. The now clean fluid is deposited into the clean portion of the system tank.
The clean tank's Total Dissolved Solids (TDS) Meter continuously monitors water quality. If the TDS level exceeds a preset high point (40-100 PPM), water is directed through the D.I. Vessel (Vessel #3). This vessel contains a waterjet resin bag that removes dissolved solids, reintroducing deionized water into the clean tank.
A High-Pressure Feed Pump then delivers the clean, cooled, TDS-controlled water from the clean tank back to the High-Pressure Waterjet Pump. The system is designed for continuous overflow from the clean tank into the dirty tank, ensuring a positive level of clean water for the feed pump and preventing potential damage.
The CLS also incorporates an Ozone Generator, which continuously introduces a mixture of ozone and air into the clean tank. This helps eliminate biological fouling agents throughout the system. Additionally, clean water is routed through a heat exchanger and a closed-loop chiller to cool the water and remove heat generated by the high-pressure cutting pump and the cutting process itself.
Important Technical Specifications:
Electrical:
- System: 460vac/3ph/60Hz
- Closed Loop System Full Load Amps: 5.0 Amps
- Overall Full Load Amps (GRS and CLS): 19.0 Amps
Connections:
- Make-Up Water: 2 GPM @ 20 PSI min, 0.75" hose barb connection
- Inlet: 1.5" BHF connection
- Outlet: 0.5" hose barb connection
- Heat Exchanger Inlet/Outlet: 0.75" hose barb connection
Tank:
- General Dimension: 66" L x 36" W x 62" H
- Tank Dimension (Clean/Dirty): 30" L x 36" W x 30" H
- Clean Tank Capacity: 50 US GAL
- Dirty Tank Capacity: 100 US GALLONS
- Max Tank Capacity: 150 US GALLONS
Bag Vessel (Vessel #1) – SLBV-0833-BC:
- Construction: 304 Passivated Stainless Steel
- Bag Requirement: One (1) Filter Bag, extra fine extended area Pre-Filter (CLS-1-G2PS-EA)
- Rim Gasket: Buna-nitrile
Hurricane Vessel (Vessel #2) – HRF-LP:
- Construction: 316 Passivated Stainless Steel
- Recommended Flow Rate: 30 GPM
- Service Height Clearance: 62"
- Filter Cartridge: One (1) 0.35 micron-rated Pleated Polyester-Plus™ Filter Cartridge (HR-930-Q.35)
- Rim Gasket: E.P.D.M.
D.I. Vessel (Vessel #3) - DI-1:
- Construction: 316 Passivated Stainless Steel
- Capacity: One cubic foot of Water-jet Resin in a Poly Sateen Bag (recyclable) (CLSR-100-PKG)
- Rim Gasket: Buna-nitrile
Final Filter Vessel (Vessel #4 x2) – (HSL-10-0.50-WCP):
- Quantity: 2 Separate Cartridges
- Construction: Polypropylene
- Flow Rate: 10 GPM
- Filter Cartridge: One (1) 0.35 micron-rated Pleated Filter Cartridge (CLS-801-Q.35 / CLS-801-0.2)
- Rim Gasket: E.P.D.M.
System Pump – B82418:
- Type: Closed-coupled, end suction, single-stage Centrifugal Pump
- Motor: 460vac/3φ/60Hz, 1 HP, 3450 R.P.M., T.E.F.C., 2.0 Amps Full Load
- Impeller: 5" diameter AISI 316 Stainless Steel
High-Pressure Feed Pump – TC40S340:
- Type: Direct-coupled, self-priming, multi-stage Centrifugal Pump
- Motor: 460vac/3φ/60Hz, 1.15 HP, 3300 R.P.M., T.E.F.C., 2.5 Amps Full Load
- Impeller: multistage
Total Dissolved Solids Meter - CIC-152-4:
- Type: Digital monitor/controller
- Range: 0-500 PPM
- Conductivity Set Point A: 40 PPM
- Change Resin-Flashing Beacon: 100 PPM
Ozone Generator - ZO-200-CD:
- Type: Corona Discharge
- Ozone Output: 5.0 SCFH @ 2 PSI
Heat Exchanger:
Usage Features:
- Automated Water Level Control: Float valve assembly ensures consistent water depth in the dirty tank and provides make-up water as needed.
- TDS Monitoring: The integrated TDS meter automatically activates the D.I. Vessel to maintain optimal water quality.
- Ozone Generation: Continuous ozone and air introduction prevents biological fouling.
- Heat Management: A heat exchanger and chiller actively cool the water, counteracting heat generated by the cutting process.
- Safety Features: Requires eye and ear protection in designated areas. Warnings emphasize disconnecting power and relieving pressure before maintenance.
Maintenance Features:
- Daily Check List: Includes checking water quality in the clean tank, system pump pressure differential, TDS meter readings, water overflow from clean to dirty tank, and make-up float assembly.
- Pump Maintenance: Annual inspection recommended, including replacement of worn parts, mechanical seals, impellers, and wear plates. Spare seal kits are advised.
- Dirty Tank Pre-Filter Maintenance (Filter #5): Regular removal and cleaning/replacement of the pre-filter bag.
- Bag Vessel Maintenance (Vessel #1): Bag filter change when outlet pressure gauge reads 10 PSI or less. Detailed procedure for safe bag replacement, including pressure relief and O-ring inspection.
- Hurricane Vessel Maintenance (Vessel #2): Filter cartridge change recommended monthly or every 200 hours of runtime. Detailed procedure includes draining the vessel, applying wax lubricant to seals, and proper reassembly to prevent leaks.
- D.I. Resin Vessel Maintenance (Vessel #3): Resin bag and pre-filter disc replacement when TDS readings are out of range (40-100 PPM). Procedure includes closing valves, draining, and O-ring inspection.
- Final Filter Vessel Maintenance (Vessel #4): Filter cartridge change when a 30 PSI pressure differential is observed. Procedure includes shutting off the feed pump, discarding fluid, and proper cartridge replacement.
- Service Beacon Maintenance: Light bulb replacement procedure.
- Ozone Generator Maintenance: Regular checks for ozone release from the dispersion stone. Cleaning the dispersion stone by soaking in lemon juice or vinegar is recommended if clogged.
- Reservoir Maintenance: Daily checks for garnet buildup in the dirty tank and ensuring proper ozone stone bubbling and water overflow. Strict warning against adding chemicals, oils, or other liquids to the water components to prevent filter damage and warranty voidance.
- Settling Weir Maintenance: Settling weir bag service when solids accumulate 2-3 inches below inlet/outlet pipes. Procedure includes disconnecting plumbing, removing pipes, and using a forklift for bag removal/installation.
- Chiller Maintenance: Weekly visual checks of air filters and quarterly cleaning of filter screens. Replacement of damaged screens.
Ebbco Inc. provides a one-year warranty (or 2080 hours of operation) on products free from defects in materials and workmanship. Pumps, pump bodies, and filter vessels also carry a one-year warranty, while pump seals have a ninety-day limited warranty. The warranty is voided by misuse, neglect, improper installation, or operation contrary to Ebbco Inc.'s recommendations, or if non-Ebbco Inc. brand filter cartridges are used. The use of any chemicals, chlorine, oils, or other liquids in the system will also void the warranty.