Installation: Gne ONE Cartridge Tank Filters User Manual

Overview

ONE Cartridge Tank Filters are high-capacity water filtration housings designed for installation as pre-filters, post-filters, or standalone treatment units. The product family includes the CW-840-1, EF-840-2, and CW-840-PB configurations, each using a replaceable cartridge selected for sediment, carbon, chloramine, cyst, lead, or PFOA/PFOS reduction applications.

The tank is supplied with the cartridge separate from the pre-assembled housing. Correct installation, pressure control, routine rinsing, and timely cartridge replacement help maintain water flow and protect the plumbing system.

Specifications

• Models covered: CW-840-1, EF-840-2, and CW-840-PB.
• Tank size: 8 inches wide by 40 inches high.
• Assembled CW-840-1 dimensions: 8 inches wide, 44 inches high, and 11 inches deep with the inlet/outlet head and bypass facing the wall.
• Tank connection: 1-inch NPT connection at the bottom for an optional drain.
• CW-840-1 inlet and outlet: 1-inch NPT connections.
• General installation pressure: 25 to 100 psi.
• General installation water temperature: 33°F to 100°F, or 0.5°C to 37.7°C.
• CW-840-PB operating pressure: 20 to 125 psi.
• CW-840-PB operating temperature: 34°F to 120°F, or 1°C to 50°C.
• CW-840-PB certified cartridge: CT-05-CB-AMCYL-IO.
• CW-840-PB contaminant-reduction capacity: up to 100,000 gallons when installed with the required performance-indicating device.
• CW-840-PB service-alarm setting: 100,000 gallons.

Detailed Description

The filter tank contains a removable cartridge supported by an internal distributor or adapter arrangement. Water enters through the inlet side, passes through the cartridge media, and leaves through the treated-water outlet. The cartridge type determines the intended filtration function, so replacement elements must match the application and housing.

The CW-840-1 uses an inlet/outlet head with an attached one-inch full-flow bypass valve. The bypass contains independently operated inlet and outlet plug valves with red arrow-shaped handles. Its four positions are normal operation, bypass, diagnostic, and shutoff.

In normal operation, water passes through the cartridge. In bypass, the tank is isolated and untreated water continues to the building. Diagnostic mode sends untreated supply water to the building and the filter while preventing water from leaving the filter for building use. Shutoff stops water to the building and allows the treatment system to depressurize when a tap is opened.

The EF-840-2 uses a top cap with a red pressure-release button. Its job is to vent trapped pressure before cartridge service. Both systems use a retaining ring to secure the top cap and sealing O-rings to prevent leaks.

Available cartridge families include pleated depth filters, string-wound or meltblown depth filters, carbon block filters, nano-aluminum filters, meltblown polypropylene filters, and pleated polypropylene filters. Select the cartridge according to the water-quality problem and the required flow characteristics rather than choosing by color alone.

Safety

• Do not use the system with microbiologically unsafe or unknown-quality water unless adequate disinfection occurs before or after filtration.
• Install the tank on a firm, level surface that can support the equipment without relying on connected plumbing.
• Keep the system and its connections above 33°F to prevent freezing damage.
• Do not expose the tank to vacuum conditions. Install a vacuum breaker when the plumbing layout could create negative pressure.
• Keep at least 10 feet of piping between the filter outlet and a water-heater inlet.
• Use a drain that can accept the system rinse rate. If the bottom drain is not installed, plug the one-inch tank opening or water will escape.
• Use thread tape on the one-inch NPT inlet, outlet, and drain threads. Do not apply thread sealant to nut or cap connections that seal with O-rings.
• Do not use petroleum lubricants, pipe dope, oils, or spray silicone on the system. Food-grade silicone may be used on applicable black O-rings; do not lubricate red or clear lip seals.
• Tighten plastic nuts and caps by hand or with the specified service wrench. Do not use a pipe wrench, screwdriver, or hammer on these parts.
• Protect the surrounding area from water released during rinsing, depressurization, or cartridge replacement.
• Follow applicable local plumbing and electrical-grounding codes. If metal plumbing is part of the building grounding path, install a suitable bonding jumper or ground clamp between the inlet and outlet pipes.

Setup and Operation

Installation Planning

Position the tank near a suitable drain, especially when regular rinsing or cartridge replacement is expected. Install an inlet shutoff valve and connect the inlet and outlet through the bypass or the approved job-site valve arrangement. For the EF-840-2, provide three bypass valves so the tank can be isolated, bypassed, and serviced without replacing the surrounding plumbing.

Assemble plumbing fittings to the plumbing system before attaching the filter-side nut, split ring, and O-ring. Heat from soldering or solvent cement can damage these components, so soldered joints must cool and solvent cement must cure before the connection is completed.

CW-840-1 Cartridge Installation or Replacement

1. Move the bypass to isolate the filter and stop water from entering the vessel.
2. Release pressure briefly through the bottom drain. If no drain is installed, shut off the filter inlet and open a connected outlet to relieve pressure.
3. Disconnect the bypass from the inlet/outlet head using the head-side nuts. Do not loosen pressurized plumbing-line nuts.
4. Press the top cap down evenly, then remove the retaining ring by pulling its handle inward and upward.
5. Lift off the top cap and remove the used cartridge carefully. Place it in a container to catch residual water.
6. Remove the new cartridge from its packaging and retain the product-description tag.
7. Inspect and lubricate the applicable valve-assembly O-ring with food-grade silicone lubricant.
8. Insert the cartridge with its distributor riser at the top of the tank.
9. Refit the top cap, ensuring the adapter enters the cap assembly correctly, then press the cap down firmly.
10. Install the retaining ring beginning opposite the handle. Push it into the groove by hand until both ends meet.
11. Rotate the ring slightly around the tank opening to confirm that it is fully engaged.
12. Attach the product-description tag to the retaining ring and reconnect the tank to the bypass.
13. Open a treated-water outlet, return the bypass to normal operation, and fill the tank slowly.
14. Inspect every connection for leaks, then close the treated-water outlet and perform a final integrity check.

EF-840-2 Cartridge Installation or Replacement

1. Close the system inlet and outlet valves.
2. Press and hold the red depressurization button until pressure is fully released. Open the drain if one is installed.
3. Press the top cap down evenly and remove the retaining ring by pulling its handles inward and upward.
4. Lift the top cap using its upper handles.
5. Remove the replacement cartridge from its bag and retain the bag for the used element.
6. Pull the old cartridge upward by its handle while holding the tank down. Place it in the bag and dispose of it according to applicable regulations.
7. Flush remaining sediment from the tank with clean water if necessary, then close the drain.
8. Lubricate the cartridge O-rings with food-grade silicone lubricant.
9. Insert the cartridge into the bottom center of the tank and press gently until it is fully seated.
10. Replace the top cap, press it down, and install the retaining ring by hand.
11. Rotate the ring slightly to verify complete engagement in the groove.
12. Open the inlet valve slowly while pressing the red button to vent trapped air.
13. When water begins to escape from the pressure-release button, stop pressing it and open the outlet valve.
14. Inspect the tank, cap, valves, and fittings for leaks.

CW-840-PB Certified Contaminant-Reduction Setup

A certified CW-840-PB arrangement requires the ONE tank, the CT-05-CB-AMCYL-IO contaminant-reduction cartridge, and a qualifying softener or backwashing filter equipped with a metering service alarm. Every gallon passing through the cartridge tank must also pass through the associated meter.

On turbid or heavily loaded water, install appropriate sediment protection before the contaminant-reduction cartridge. Excessive sediment can plug the cartridge before its rated capacity is reached and cause an early pressure drop.

Set the performance-indicating device or service alarm to 100,000 gallons. When the capacity is reached, the controller displays a service-required message and may sound an audible alarm. Pressing a controller button can silence the audible portion, but the service message remains until the cartridge is replaced and the alarm is reset.

Apply the CW-840-PB identification label only after confirming that the tank, cartridge, qualifying metering equipment, alarm setting, and installation requirements all match the certified configuration.

Initial and Replacement Cartridge Flushing

Flush the system and replacement cartridge for at least 10 minutes before putting filtered water into normal use. When the bypass has been in diagnostic mode, rinse the system before returning it to normal operation.

Cleaning and Maintenance

Use the optional bottom drain to rinse sediment and debris from the tank and cartridge. Periodic rinsing can help extend cartridge service life. Locate the tank close enough to the drain for safe discharge and verify that the drain can handle the rinse flow.

Before every cartridge change, isolate the tank and relieve pressure. Inspect the retaining ring, cap, adapter, cartridge seat, and O-rings. Replace damaged sealing parts before returning the system to service.

Do not reset a metering service alarm unless the cartridge has been replaced, service is required, or the stated capacity has been reached. Resetting the counter prematurely can prevent the system from accurately indicating cartridge life.

Troubleshooting

Low Water Pressure

• Possible cause: The cartridge is fouled. Correction: Replace the cartridge.
• Possible cause: The cartridge flow rating is too low for the application. Correction: Use a cartridge with a suitable higher flow rating.
• Possible cause: Debris is blocking the tank inlet. Correction: Isolate and depressurize the system, then clean the inlet area.

Short Cartridge Life

• Possible cause: The selected micron rating is too fine. Correction: Choose a different rating or use multiple tanks for staged filtration.
• Possible cause: The incoming water contains a heavy particle load. Correction: Check the raw water and add suitable pre-filtration when necessary.
• Possible cause: Water consumption exceeds the expected cartridge capacity. Correction: Review gallons used and select a cartridge arrangement appropriate for the flow and load.

Blocked Drain

Infrequent rinsing can allow sediment to accumulate. Flush the system more often and verify that the drain path can accept the rinse flow.

Leak at the EF-840-2 Pressure-Release Button

A leaking pressure-release button can indicate a failed internal O-ring. Replace the button assembly before returning the system to service.

Replacement Cartridges

• CT-1005-IO: 10-by-5-micron double-pleated depth filter.
• CT-2010-IO: 20-by-10-micron double-pleated depth filter.
• CT-5020-IO: 50-by-20-micron double-pleated depth filter.
• CT-2005-SWMB-IO: 20-by-5-micron string-wound/meltblown depth filter.
• CT-5020-SWMB-IO: 50-by-20-micron string-wound/meltblown depth filter.
• CT-03-CB-IO: 3-micron carbon block filter.
• CT-20-CB-IO: 20-micron carbon block filter.
• CT-03-CB-AMINE-IO: 3-micron carbon block filter for chloramine reduction.
• CT-05-CB-AMCYL-IO: 0.5-micron carbon block contaminant-reduction filter.
• CT-20NANO-AG-IO: 20-micron nano-aluminum cartridge with silver and double-pleated construction.
• CT-COM05-MB: 5-micron meltblown polypropylene depth filter.
• CT-COM20-MB: 20-micron meltblown polypropylene depth filter.
• CT-COM1AP: 1-micron absolute pleated polypropylene filter.
• CT-COM05P: 5-micron pleated polypropylene filter.
• CT-COM20P: 20-micron pleated polypropylene filter.
• CT-COM50P: 50-micron pleated polypropylene filter.
• CT-COM-CARBP: pleated activated-carbon polypropylene filter.

Replacement Parts and Fittings

Common CW-840-1 service parts include the WS1 bypass assembly, inlet/outlet head, O-rings, retaining rings, drain plugs, the 8-by-40-inch vessel shell, and the one-inch PVC bottom assembly. EF-840-2 parts include retaining rings, the pressure-release top cap, cap O-rings, the vessel shell, commercial caps, the filter adapter, and drain plumbing.

Installation fitting assemblies are available in PVC male NPT, PVC solvent, brass sweat, brass push-fit, and John Guest configurations. Assemblies are supplied in several pipe sizes. Confirm the fitting type, pipe size, and local code requirements before installation.

Warranty

The supplied warranty covers the original owner when the system is installed according to the manufacturer’s specifications. Tank and filter solutions are covered against defects in materials and workmanship for one year from the original installation date. Inlet/outlet head assemblies are covered for five years.

Coverage excludes damage caused by improper installation, operation, maintenance, freezing, flooding, fire, chemical attack, misuse, alteration, unsuitable water, unsupported plumbing, non-approved cartridges or parts, and normal-wear components such as O-rings. Labor and costs associated with removing or reinstalling the unit are also excluded.

Pros & Cons

• Pros: Multiple cartridge media options support sediment, carbon, chloramine, cyst, lead, and PFOA/PFOS applications.
• Pros: The bypass system simplifies isolation, diagnosis, and service.
• Pros: The optional drain supports rinsing and pressure relief during maintenance.
• Pros: The CW-840-PB configuration can use a metered service alarm to track cartridge capacity.
• Cons: Correct performance depends on choosing the appropriate cartridge and maintaining the specified pressure, temperature, flow, and flushing conditions.
• Cons: The certified contaminant-reduction configuration requires qualifying metering equipment and correct service-alarm programming.
• Cons: Cartridge replacement releases retained water, so the work area must be protected from spills.