Installation manual of DIY Reverse Osmosis Water Filter System to make your DIY installation a breeze. Read through all the instructions before installing and using this RO system. We are certain that you will be satisfied with its performance and that it will serve your need for safe and clean drinking water for years to come. If you have any trouble, please contact our tech support online. Your RO system and its parts. Nexus-tools.jpg' alt='Nexus Manual Installation' title='Nexus Manual Installation' />Technical information about Shimano Nexus 7speed internalgear hubs. After upgrading to Android 4. NRT will not reroot my unlocked Nexus 4. It boots the phone into the bootloader, but then the phone sits on downloading, and. The Nexus One codenamed HTC Passion is an Android smartphone designed and manufactured by HTC as Googles first Nexus smartphone. The Nexus became available on. Chapter 1 Introduction What is wview wview is a collection of linuxunix daemons which interface with a supported weather station to retrieve archive records if. The difference is clear at www. EazyPod Installation Operating Instructions Thank you for purchasing your new EazyPod filter. The Nexus 210 and Nexus 310 filtration systems were manufactured between 20. These filters have now been replaced with the Nexus 220 and Nexus 320 launched. I didnt mention it in the data center design writeup, but it is possible to connect a switch to a Nexus fabric extender. For the uninitiated, Bridge Protocol Data. Reverse Osmosis system. Pressure Tank. 3. Food Grade Pipe. Goose neck Faucet. Feed Water Valve, Tee fitting, Tank Ball Valve, and Drain Clamp. NEXUS is the premier provider of aviation operation services that help customers navigate the complex international travel process with ease. Installation and Maintenance Manual. Introduction. This reverse osmosis system uses advanced reverse osmosis technique to provide healthy and tasty drinking water. The heart of the reverse osmosis unit is an automatically flushed reverse osmosis membrane with 0. Stages of filtration The 1st Stage Spun fiber for removing sand, particles, dust, mud etc. The 2nd stage Granular Carbon Filter for removing chlorine, organics, odor, smell, turbidity, etc. The 3rd Stage Block carbon filter for removing chlorine, organics, odor, smell, turbidity, etc. The 4th Stage RO membrane for the removal of bacteria, dissolved metal, chemicals, salt, other minerals, and other dissolved matter in the water. The 5th Stage Post carbon filter for removing dissolved gasses. Site Selection for major system components. The RO system was designed to fit under a sink, however, because of space limitations or other reasons, the systems flexible design allows for installation in other locations. When determining the location, remember that access to a cold water line, access to a drain, and ease of filter replacement are important considerations. All components and tubing should be located in an area, which is not exposed to freezing temperatures or direct sunlight. Goose neck faucet The faucet should be placed near the sink where drinking water is normally obtained, usually at the edge of a sink. Convenience of use filling of water pitchers and glasses and an unobstructed open area under the sink for attaching tubing are important considerations. A diameter hole on a flat surface is required for faucet installation. The thickness of the mounting surface should not exceed 1. Pressure Tank the pressure tank may be placed where it is convenient, usually within 1. These tanks can weigh up to 3. Nexus Manual Installation' title='Nexus Manual Installation' />If the tank is mounted remotely and a longer run of tubing is required, the tubing should be 38 outside diameter to prevent a pressure drop. R. O. Unit The R. O. is best installed on inner sides of the cabinet under the sink. The right side is recommended because all the tubing will be towards the back of the cabinet and out of the way. Remote installation is also an option. Choose a location where cold portable water and drain access is handy. The mounting location should allow adequate clearance for water cartridge changes. Supply Water Connection The supply water valve should be located as close to the R. O. unit as possible. USE POTABLE COLD WATER ONLY. Softened water will extend the life of the R. O. membrane. 5 Drain connection the waste water from the RO must go to drain. If discharging into a utility sink or standpipe, a gap of greater than 1 above the rim must be provided. DO NOT connect the system drain line to a dishwasher drain or near a garbage disposal. Back pressure from these units may cause the air gap to overflow. Installation. 1. Choose where to install the gooseneck faucet. Drill the hole for the faucet using the correct drill bit for the material drilling through available from you local hardware store or home center. NOTE When cutting the tubing make clean, square, cuts, failing to do so could result in poor connection and possible leaks. Put the plastic pipe thru the hex compression nut. Put the white nylon sealing washer on the plastic pipe, assemble and hand tighten the hex nut. Drain Clamp Installation for discharging into the sink drainpipe. Position the drain clamp on the drainpipe above the drain trap. Allow room for drilling. Tighten securely. Use a battery powered or properly grounded drill. Using the clamp port as a drill guide, drill a 73. DO NOT penetrate the opposite side of the pipe. Locate the drain tubing. CAUTION The lowest point of the line should be point of connection to the drain clamp. There should be no sag in the line as this may cause excessive noise as the reject water is flowing to drain. Mount the RO system with provided screws. Set pressure tank in place. Connect all remaining plastic piping. Start up your RO system. Turn on cold water supply valve and feed water valve, but close the tank ball valve. Open the goose faucet. Check the system, for leaks. After about 5 minutes, the water will start to drip out of the faucet, let it drip for about 1. It     will take about 4 hours to fill the pressure tank, depending on local water pressure. DO NOT DRINK THE WATER OF THE FIRST TANK PRODUCED     BY YOUR NEWLY PURCHASED SYSTEM. When the tank is full, flush the system by opening the faucet until the water in the tank is completely discharged and slows to a drip. Turn off the faucet, and let the tank fill again. This process should take about 2. After the second tank is filled now you can enjoy the purified water. Check for leaking daily at the first week and periodically after one week. For the first few days you may notice milky colored water that separates after a short while, these are tiny air bubble in the water from the carbon     filters these bubbles are temporary and they are normal and safe. To ensure the system is operating at its optimum level, certain routine maintenance must be performed. Frequency of maintenance performance will depend on feed water quality and level of system usage. Change spun fiber filter as required or every 3 to 6 months depending on raw water quality and consumption. Change granular carbon filter and block carbon filter every 6 to 1. Change RO membrane as required or every 2. Change post carbon filter every 6 to 1. Change the filter cartridges. Use provided wrench. Close the water supply valve and the tank ball valve. Release pressure by turning on the faucet. Use the wrench to remove the filter cartridge housing. NOTE when removing the cartridge, some water may spill out. Change the filter cartridges, and turn the system back on, check for leaks. Change the membrane. Close the water supply valve and the tank ball valve. Release pressure by turning on the faucet. Remove the membrane assembly by unscrewing hex water tube nuts. Work over a sink or bucket to disassemble the outer housing from the membrane assembly remove and replace membrane, then reassemble. Reinstall the housing with the new membrane into the R. O. system. NOTE filters and membranes are consumables. Their useful life is dependent on the quality of water supplied and consumption rate. If you are not going to use the system for a long time you are on a holiday, tour, etc. You CAN connect a switch to a Nexus Fabric Extender. I didnt mention it in the data center design writeup, but it is possible to connect a switch to a Nexus fabric extender. Search queries that have led readers here, conversations with customers, and various blogposts, have made it clear that people are running full speed into an interesting feature of the Cisco Nexus Fabric Extenders  FEX ports always run bpduguard. You cant turn it off. For the uninitiated, Bridge Protocol Data Units BPDUs are the packets used by bridges switches to build a loop free topology. BPDU Guard is a Cisco interface feature that immediately disables an interface if a BPDU arrives there. Its appropriate on interfaces where you never expect to plug in a switch. If youve ever plugged a switch into your cubicle jack at work, you may have experienced this feature firsthand. BPDU Guard tends to go hand in hand with portfast, a feature that makes switch interfaces ready for use as soon as they link up, instead of forcing these fresh links to jump through the Spanning Tree Protocol STP loop prevention hoops. If youre going to use portfast, you must use bpduguard. Nexus Fabric Extenders 2. It cant be disabled. Who cares Bpdugaurd means that you cant hang a switch from a FEX. If youve adopted Ciscos vision of the modern data center, this can become a problem because the 2. No 1. 01. 00 capability here. It turns out theres a lot of stuff in a modern data center that still cant do gigabit, but lives out in the general population thats intended to be served by the Fabric Extenders HP server i. LO interfaces. Terminal server appliances. Power strips. Environmental monitors. KVM equipment. The best option for these small, far flung clients might be the installation of a small, 1. I selected the WS C2. TC S for this purpose in a recent build because its super cheap list price is 7. The natural inclination is to try to uplink directly into the nearby 2. T fabric extender. But, as soon as you do, the 2. BPDU, and the 2. 14. Now what You could disable spanning tree on the 2. You could disable spanning tree on just the uplink interface because its safer, but still doesnt accomplish redundancy. You could link the small switch directly to the distribution layer, but thats a lot of buck for relatively little bang. Another possible answer is flexlinks, a long forgotten uplink redundancy mechanism that probably predates stable STP operation. I had assumed so, but it doesnt look like flex links is quite that old. I dont know why this feature was introduced, but its useful here. Enabling flexlinks is a one liner  In interface Gigabit. Ethernet 01 configuration context do switchport backup interface Gigabit. Ethernet 02. Now, Gig. The Handbook Of Credit Risk Management Originating Depository. Gig. 01.  Spanning tree protocol is disabled on these two ports, so BPDU Guard wont cause a problem, and theres no risk of these ports creating a topology loop because only one one of them will be in forwarding mode. Plug both interfaces into a fabric extender and youre in business. The interfaces can be trunks or they can be access ports. If theyre trunks, you can even balance the vlans across the uplinks if youre so inclined personally, I dont care for it, but this is a very common strategy. A topology change will flood bogus packets which appear to be sourced from your client systems so that upstream switches update their forwarding tables. A process that can be made even quicker with the swichport backup mmu mechanism but I doubt the Nexus supports that anyway. Going forward 1. Mbs is really the only real requirement. I can only think of twodevices that are limited to only 1. Mbs in any of the networks I work on. And both of those are in my basement, which has not yet been migrated to the Nexus platform. Fortunately, the Nexus 2. Fabric Extenders can do 1. Plus theyre cheaper, and have a few other benefits over the 2. T.  As far as Im aware, theres not a single technical reason to prefer a 2.