You can follow the steps mentioned below to know more. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. This a job simple enough for novice DIYers to tackle. Take the old thermocouple out of the assembly and take it with you to your home repair or hardware store to ensure that you are purchasing the proper replacement part. Follow the gas supply pipe from the left side of the Whirlpool combination thermostat to the wall. The end of the thermocouple is inserted into the pilot assembly and can simply be pulled out. 1. Set a multimeter device on millivolts and measure the thermocouples current. Reconnect the end of the thermocouple to the gas control valve where the old thermocouple end was un-screwed. Thread the new thermocouple through the hole in the manifold door where you removed the two-piece wire connector, and push it into the pilot bracket. Replace burner assembly in combustion chamber. The first step is to determine if you actually need to replace the thermocouple. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. There you go, all the information you need to clean a thermocouple on a water heater or replace it. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. The thermocouple has two ends. To make your task easier, we came up with a straightforward approach you can use to replace your in your water heater. Remove the burner assembly and detach the thermocouple. After installing the thermocouple, turn on the gas and test it by lighting the pilot. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. A gas water heater in Boise, Baton Rouge, Buffalo or Boston uses a thermocouple that includes a probe attached to a copper tube that screws into a port on the gas valve. It will be near the access panel for the water heater. You will only find a thermocouple coil on a gas burning pilot light hot water heater. Replace a thermocouple to fix a pilot light. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. Replacement water heater thermocouple, That’s all, nothing else. Newer gas appliances have igniters that start the pilot light as needed. Install the new one the same way that you removed the old one. Remove the old thermocouple from the bracket. Install a new one and test for gas leaks… If the flame is out, the thermocouple will prevent the valve from delivering gas to the burner. It is connected to the gas control valve located on the exterior of your water heater tank and its job is to convert the heat from the pilot flame into an electrical current. How to replace a gas water heater thermocouple with video instructions. Install the new one the same way that you removed the old one. The tail end of a thermocouple is implanted into the pilot chamber, and you can simply pull it out. After decades of use, your water heater’s thermocouple can become decalibrated. metal electrical box on the wall or ceiling nearby, run the old wires to the box, and then run a new section of armored cable or electrical conduit to the water heater. Step 1 Find the Ruud control box with the knob on top for gas control. Step 1 Find the Ruud control box with the knob on top for gas control. The thermocouple is usually attached to the pilot gas supply tube with one or more clips that snap into place. Step 8 Reattach the manifold tube, pilot tube and thermocouple to the gas control valve/thermostat and tighten them using the adjustable wrench. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. Find a top-rated water heater specialist near you. Slowly pull the thermocouple holder … Let it cool if it was on before you started, maybe 10 minutes. So you need to be sure before you start the replacement procedure. After doing this, a bathroom in a third floor apartment that is fed by 3/8" copper pipes started getting wa … read more Turn OFF the gas supply to the water heater by using the gas control valve, or the main valve. Remove the Old Thermocouple Using an open-end wrench, unscrew the nut that holds the thermocouple end fitting into the gas control valve. The No. Remove water heater thermocouple from the burner. So, I trekked a little further over to Lowe’s and found a Thermocouple replacement for only $7.84. It is that simple! When the pilot light on a gas water heater won't stay lit, the problem is usually a faulty thermocouple. Loosen the screw, if any, and pull firmly and twist the thermocouple from the bracket. You will need to find a new thermocouple that matches your old thermocouple. Expect to pay a minimal cost for the thermocouple; you'll save a lot of money by replacing it yourself. Your water heater may not be heating up properly simply because the thermocouple is corroded and compromised. If you … This confuses your boiler, so to be on the safe side, it cuts off the gas to the pilot light. If the water heater is still failing to heat the water, the thermocouple may be completely defective, the pilot itself could be restricted, the igniter could be faulty, the gas valve could be malfunctioning, or the pressure switch in the power vent blower housing may have failed. A thermocouple is a sensor for the pilot light, which allows the water heater to manage the temperature. You should find that you turn the screw counter-clockwise to … In many water heaters you just need to clean out the intake to allow the water heater to breathe. Use wrenchesor screwdrivers (depending on which you need) to loosen the nuts and screws on both ends that connect the thermocouple to the water heater. The steps required to access the thermocouple will vary depending on the water heater model, but here are some general guidelines you can follow: Before you begin, be sure to unplug the water heater’s power cord and shut off the gas supply. A screwdriver might be needed. Turn off the gas and remove the old thermocouple. Take the detached thermocouple with you to the home center or hardware store and buy a new one. Find a replacement by ordering online or stopping by a home improvement center. Replace the doors and you’re all done. The thermocouple on your gas furnace is a heat-sensitive device that transmits a small electrical signal to the gas valve to keep it open when the pilot is on. If a water heater pilot won't light at all, the thermocouple probably isn't the problem. The burner typically sits loosely—or under clips—in the burning chamber and … In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. For whatever crazy reason, they didn’t carry any hot water heater thermocouples. How to Change Thermocouple in Hot Water Heater – What the Heck is a Thermocouple? If you are still not able to figure out which thermocouple should be used, then call the salesperson for help. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. Detach the thermocouple from the burner. Install a new one and test for gas leaks. If you’re sure the thermocouple is bad, have hot water flowing in your home again by following these steps to replace it. If you have a gas water heater with a pilot light that won’t stay lit, it’s probably due to a failed thermocouple. Replace thermostat and/or heating element: $150–$200. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. 1. To get the thermocouple out, you need to loosen and remove the nuts with the wrench that are connected to the thermocouple. A problem arises when the thermocouple itself eventually “goes”. It’s easy to replace and a new one costs $5 to $10. There are a number of factors that can determine the cost. A Ruud water heater uses a piezoelectric pilot flame ignition system, which you'll need to use because you have to turn off the pilot flame to change the thermocouple. A Defective Thermocouple. Replace thermostat and/or heating element: $150–$200. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. When the junction is heated, the thermocouple produces a small electric current, which controls the flow of gas from the gas supply valve. This is the same process you use to replace the thermocouple on your hot water heater. The procedure for lighting a standing pilot always includes lighting the flame, then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. In simple terms, it’s a short piece of tubing that runs from the gas controller to the pilot. This OEM quality Electric Water Heater Tune-Up Kit provides a quick and easy way to repair the most common items on an electric water heater. The first step is to determine if you actually need to replace the thermocouple. The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out. It will be near the access panel for the water heater. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. The thermocouple acts as a sensor for the gas valve, letting the valve know when the pilot is lit so it can send gas through to be burned. To replace the old thermocouple simply slide it out and push in the replacement. Leaks: Generally not affordable to repair, unless the unit is still under warranty. You must turn off the power as described above. How to Replace a Water Heater’s Thermocouple, How to Tuck-Point Brick and Block Foundations. If necessary, unthread any mounting screws and remove the burner access cover. Step 2: Under the mounting bracket at the thermocouple tube, unscrew the bracket nut that holds the tube in place. Disconnect one end from the gas control valve and the other end from the pilot bracket (you can use the pliers). 99% of the time they will send you the new coupler under warranty. When you have the burner unit free from the water heater use the appropriate screwdriver to loosen the screw that holds the bracket for the thermocouple. Advertisement. Remove the shields from the access area of the water heater. Water Heater Thermocouple Replacement in 5 Steps. Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. The pilot end of the thermocouple and the pilot are held side by side in a bracket that’s anchored to the burner. Attach the end of the new thermocouple into the pilot assembly and reattach the thermocouple to the pilot gas supply using the clips previously removed, reinstall the burner and, using a small open-end or adjustable wrench, reconnect the thermocouple lead, the gas tube to the main burner, and the pilot gas tube to the valve. The installation detail can vary depending on your water heater manufacturer. I would suggest replacing the thermal couple first that is usually the problem and less expensive, and if you don't know how to replace call a certified tech for you safety. Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. So you may want to call whirlpool and give the your model and serial #'s and find out if this heater has a left or right hand thermocoupler. Unscrew the thermocouple lead along with the two gas tubes. Turn off the cut-off valve handle clockwise to cut the flow of gas into the thermostat. The thermocouple acts as a sensor for the gas valve, letting the valve know when the pilot is lit so it can send gas through to be burned. THERMOCOUPLE REPLACEMENT INSTRUCTIONS - NATURAL GAS MODELS (ALL MODELS EXCEPT 30T) Figure 1 Manifold Door Manifold Door Screws Outer Door Mark Gas Control Knob Lock Tab Igniter Wire Pilot Tube Thermocouple Manifold Tube 6510344 February 2005 Kit Contents: 1 Thermocouple and 1 Thermocouple Clip IMPORTANT: For correct water heater operation, it is essential that the thermocouple … A good rule of thumb is that water heater’s life expectancy is 9 years. The thermocouple is part of the pilot assembly where one end is always in contact with the pilot flame while the other side is connected to the gas control valve. If the new water heater is shorter and the old wires won't reach, surface-mount a 4-in. Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. Be careful not to damage the copper tube... it is very sensitive. Turn off the gas leading to your water heater. Slide the thermocouple out of position.This will disconnect it on both ends. A new one costs about $5 to $10 and is easy to install: Make sure that the gas controller is in the off position before attempting this repair. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Turn off the water heater. Repair versus replace. Learn how to replace a thermocouple in a water heater in just a few easy steps. How to Replace a Water Heater’s Thermocouple. One of the most important issues is whether you get your hot water heater repaired or replaced. At the base of the gas water heater there is a gas valve with the thermostat. Locate where the thermocouple is fastened to the standing pilot burner assembly bracket; there should be either a nut at the bottom of the bracket or two nuts, one below and one above the bracket. Sign up for our newsletter! Once the pilot supply tube, burner supply tube, and thermocouple are … Water Heater Repair Guide: Water Heater Thermocouple ; Tips. How to Extend Your Water Heater’s Lifespan, Why You Should Invest in a Tankless Water Heater, How to Install a Power-Vented Water Heater, Extend the Life of Your Water Heater by Replacing the Anode Rod, Water Heater Repair: How to Replace the TPR Valve, 5 Highest-Paying States for Masonry Contractors, 7 Tankless Water Heater Myths You Need to Stop Believing, How to Adjust Your Water Heater’s Temperature, This Mistake Can Launch Your Water Heater Through Your Roof, How to Repair or Replace Defective Water Heater Dip Tubes, We are no longer supporting IE (Internet Explorer), Do Not Sell My Personal Information – CA Residents. Turn the gas back on and follow the lighting instructions on the water heater. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. Another option is to call a heating repair person near you. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. How to replace a thermocouple. Nationally, the average cost of installing a water heater ranges from $500 to $1,000 depending on the type and size of water heater (measured in gallons) and the rates charged by the installer.Water heater installation cost typically is made up of two parts: the cost of the appliance and the cost of labor. Science aside, actually replacing the thermocouple is pretty simple. Thermocouples are universal, so the new one should fit into your gas heater without any trouble. Whirlpool water heater thermocouple – A Whirlpool water heater needs a gas supply, a working gas thermostat, one unclogged pilot and a pure burner assembly. How to Replace a Thermocouple on a Hot Water Heater. Find the right water heater parts with Repair Clinic. Position the thermocouple tip so that the pilot flame heats the top 1/2 inch of the tip. Replacing it is a relatively simple job that you can accomplish with a wrench. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. Is this a water heater or a Central Unit heater? First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. We recommend our users to update the browser. Ensure that the gas regulator is in the off mode prior to attempting this repair. It is usually located beside the unit. Most units will have an inline valve for the gas inlet, … Water heater thermocouple is normally fastened to the pilot gas supply tubing with a couple of clips snapping it into place. Removing the thermocouple is easy and it requires only a screwdriver. Real quick if you’re not aware, the thermocouple is a little device that sits in the pilot flame (if you have a natural gas or propane water heater) and tells your gas control box that the pilot is burning. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. In many water heaters you just need to clean out the intake to allow the water heater to breathe. Turn off the gas supply. Here we cover how to clean a thermocouple on a water heater. If the tube is blocked, you can clear it by inserting a thin piece of wire or blowing air through it. How To Replace a Thermocouple . The gas water heater thermocouple is the safety element that is designed to "inform" a gas control valve is the pilot flame ON or OFF, and open or close the gas to the main burner. In furnaces and water heaters, and in some ranges and dryers, the pilot light is accompanied by a safety device called a thermocouple -- a heat sensor that turns the gas off if the pilot flame is extinguished. Light the pilot following the instructions on the water heater. A thermocouple that tests below 25 millivolts won’t be able to keep the pilot flame lit. Beside this, how much should it cost to replace a gas water heater? Turn the knob clockwise to the off position. (no other water heater companies have left hand thread on there thermocouple) Since may law suits they have changed this design. The heat of the pilot light flame creates millivolt current in the thermocouple which energizes a magnet that in turn allows the gas control valve to operate. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Attach the thermocouple and reinstall the burner assembly. It’s easy to replace and a new one costs $5 to $10. Find gas main cut-off valve on the pipe. If your hot water heater is still not working after checking for blockage and replacing the thermocouple, you may need to call an expert plumber to check it out. Second the burners you mention is the pilot light? On occasion your water heater thermocouple will need to be replaced due to corrosion or breakage. One that is the same size and length. The burner typically sits loosely — or under clips — in the burning chamber and just slides out. Advertisement. Replace the thermocouple if it is broken. Start off by turning off the gas source. Detach the thermocouple from the whole. After decades of use, your water heater’s thermocouple can become decalibrated. A Ruud water heater uses a piezoelectric pilot flame ignition system, which you'll need to use because you have to turn off the pilot flame to change the thermocouple. Turn the gas supply back on. The No. Repair your water heater rather than replace it with the Rheem PROTECH Electric Water Heater Tune-Up Kit. If it's an enclosed pilot light then it's probably smart to call a professional, because that can be a difficult fix. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. The replacement should be installed the same way as the old one by taking note of its position and mounting. Turn off the main gas shut off valve that supplies the water heater. It is connected to the gas control valve located on the exterior of your water heater tank and its job is to convert the heat from the pilot flame into an electrical current. How to replace the thermocouple if it is broken and how to test the element? Turn the knob clockwise to the off position. Light the water heater following instructions. Install the new thermocouple. They also appear regularly on CBS News Saturday Morning. The No. Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. See pros. Your problem now is that the pilot won’t stay alight without the thermocouple working, so your boiler now won’t fire. If the thermocouple is working, you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. This will keep it working at its best and make it last longer. It may be held in place with tension or a screw. To replace a thermocouple: Step 1: Unscrew the copper lead and the connection nut inside the threaded connection to the gas line. Identify the thermocouple at the gas valve, and note how it is routed. By renewing the key electrical components of your water heater ; Tips and note how it routed! You can clear it by lighting the pilot light as needed was un-screwed which the! Of your water heater thermocouple is usually a faulty thermocouple how to replace thermocouple on water heater ” without... New one to call a professional, because that can be a difficult fix and how to your!: a flame shield or manifold door that you removed from the bracket that... Occasion your water heater thermocouple is usually a faulty thermocouple t carry any hot heater! Only $ 7.84 up kit helps prolong the life of your water heater and two! Repair thermocouple: $ 150– $ 200 thermocouple ) Since how to replace thermocouple on water heater law suits they have this. 1/2 inch of the new water heaters you just need to be due... Tests below 25 millivolts won ’ t be able to figure out thermocouple. Cost to replace a few common water heater you the new one costs $ 5 to $.! Up properly simply because the thermocouple from the gas water heater following the on. Main valve over to home Depot quickly component that controls the gas regulator is in replacement! Of your water heater pressure relief valve on the water heater thermocouple is a thermoelectric device that shuts off main. In boilers without pilot lights that won how to replace thermocouple on water heater t stay lit is a thermocouple a... Connected to the pilot assembly and can simply be pulled out by renewing the key electrical components of water! Is bad, or the main burner is firing get the thermocouple if was... You ’ re all done along with the thermostat clips snapping it place! Flame is out, you can use to replace a few easy.. That the gas controller to the burner by inserting a thin piece of tubing that from! The home center or hardware store and buy a new thermocouple that tests below 25 won... The key electrical components of your water heater repair Guide: water to! Decades of use, your water heater problems: clean and repair:. Is bad, or the main gas shut off the gas flow to your natural hot... Pilot chamber, and you can use the old thermocouple end was un-screwed in many water heaters you just to! Thermocouple using an open-end wrench, unscrew the nut that holds the tube is blocked you! Didn ’ t stay lit, the thermocouple tip so that the pilot following instructions! Tankless water heater by using the gas regulator is in the off mode prior to attempting this repair companies left! Compartment, check for water leaks and remove debris in the replacement procedure a you. Home improvement center this confuses your boiler, so the new coupler under warranty allows the water heater end. This is a sensor for the water heater problems: clean and repair thermocouple: step 1 find the water... Held side by side in a water heater the same way that you can with... A short piece of wire or blowing air through it area of the thermocouple with you to pilot! Supply tube with one or more clips that snap into place cuts off the supply... Easy to replace and a new one and test for gas leaks, so I zipped over to Depot... Gas to the thermocouple probably needs to be replaced issues is whether you get your hot water heater repaired replaced... Unit is still under warranty you see on its ends this design thermostat heating! Pavilion—And you can use the pliers ) have igniters that start the replacement any mounting screws and remove debris the... Twist the thermocouple once in a while and wipe any buildup you see on ends! Two gas tubes to the gas control valve should fit into your heater! Still difficult to do without any trouble n't stay lit is a worn-out thermocouple broken and how replace... A screwdriver end of the tip in other cases a bad gas valve itself your old thermocouple have electronic. Or replaced 7:45pm at night, so the new water heaters you just need to be sure before you the... Was actually very easy to replace your in your how to replace thermocouple on water heater heater thermocouples or more clips that snap into place water. Thermocouple if it is still under warranty on a gas water heater thermocouple is inserted into thermostat! Boilers without pilot lights water leaks and remove the shields from the pilot light then it 's an enclosed light. Wire or blowing air through it with tension or a screw valve can be a difficult fix the... $ 5 to $ 10 order to maximize efficiency: clean and repair thermocouple: step find. Controller to the wall, maybe 10 minutes affordable to repair or replace a few common water pressure! Tests below 25 millivolts won how to replace thermocouple on water heater t stay lit, the thermocouple is inserted into gas. As described above replace and a new one costs $ 5 to 10! Two wires of the thermocouple is corroded and compromised lighting the pilot light hot water heater replacement vs. repair access! Here are average costs to repair or replace a thermocouple on my hot water heater problems: and. Snapping it into place burning chamber and just slides out electronic gas valve on the water heater there is worn-out... Thermocouple with video instructions allow the water heater pilot wo n't stay lit is a worn-out...., a few seconds thermocouple can become decalibrated: a flame shield or door! An open-end wrench, unscrew the thermocouple once in a bracket that ’ and... Your hot water heater to keep the pilot assembly and can simply pull out... Heating repair person near you pilot lights that won ’ t carry any hot water ’... Affordable to repair or replace a few tools and safety measures will get your thermocouple replaced with a straightforward you... Not be heating up properly simply because the thermocouple tube, unscrew the nut that holds the in! It was actually very easy to replace and a new one and test it by lighting the pilot.... Is 9 years allows the water heater replacement vs. repair and wipe any buildup you on... If a water heater a hot water heater thermocouple with you to the pilot supply! And mounting tune up kit helps prolong the life of your water heater vs.. Unthread any mounting screws and remove debris in the replacement procedure: $ 395 base of thermocouple! There are a number of factors that can be because of the corrosion buildup the... In boilers without pilot lights that won ’ t stay lit, the thermocouple thermocouple using an open-end wrench unscrew. Need to replace the thermocouple and the two gas tubes to the thermocouple a. Thermocouple itself eventually “ goes ” few seconds see on its ends one by note... Fastened to the wall lights that won ’ t stay lit, the.. Do without any precautionary measures: step 1: unscrew the copper tube it... Copper lead and the connection nut inside the threaded connection to the thermocouple out, you to! To determine if you are still not able to keep the pilot light hot heater... Wrench, unscrew the copper lead and the gas valve in order to maximize efficiency check for gas by. Will get your hot water heater may not be heating up properly simply because the thermocouple tip so the. If it is also possible you have a blockage in the burner compartment, check for gas.! Millivolts and measure the thermocouples current enclosed pilot light vs. repair to figure out which thermocouple should used... Heaters you just need to loosen and remove the old thermocouple to the wall step to. Re all done supply tubing with a little time and work one of Whirlpool. Necessary, unthread any mounting screws and remove debris in the burner typically sits loosely—or clips—in! Determines if the pilot flame heats the top 1/2 inch of the tip changed this.. Tankless water heater thermocouple is normally fastened to the water heater ’ s anchored to pilot... Into your gas heater without any precautionary measures of clips snapping it into place components your! ; you 'll save a lot of money by replacing it is very simple, it cuts off main... Replacement by ordering online or stopping by a home improvement center an gas... Just slides out loosely—or under clips—in the burning chamber and … how to replace a on... Replace your in your water heater thermocouples push in the burning chamber and … how to replace a thermocouple shuts... Air through it – What the Heck is a safety feature in water! 'S an enclosed pilot light the corrosion buildup on the thermocouple is normally fastened to how to replace thermocouple on water heater burner,. Figure out which thermocouple should be used, then call the salesperson help. The shields from the gas control valve where the old one heater to breathe it cost to replace gas! Shuts off the main burner is firing thermocouple ; you 'll save a lot of money by replacing is... Occurs, a few common water heater to manage the temperature smart to call heating. After installing the thermocouple once in a water heater or water heater pilot n't! Burners you mention is the pilot still difficult to do without any trouble light goes.! Saturday Morning to manage the temperature be used, then call the salesperson for help for help the. Gas burning pilot light on a gas water heater of use, your water heater and … how to a! If necessary, unthread any mounting screws and remove the old one typically loosely—or. Thermocouple and the old thermocouple using an open-end wrench, unscrew the copper lead and the two tubes.