Handling of One-touch Fittings Caution 1. Tube attachment/detachment for One-touch fittings 1) Attaching of tubing (1) Take a tube having no flaws on its periphery and cut it off at a right angle. When cutting the tubing, use tubing cutters TK-1, 2 or 3. Do not use pinchers, nippers or scissors, etc. If cutting is done with tools other than tubing cutters, the tubing may be cut diagonally or become flattened, etc. This can make a secure installation impossible, and cause problems such as the tubing pulling out after installation or air leakage. Allow some extra length in the tubing. (2) Outside diameter of polyurethane tubing is swelled by applying internal pressure. As such, it may be that the tubing cannot be re-inserted into a one-touch fittings. Make sure to confirm the tubing outside diameter, and when the accuracy of the outside diameter is more than + 0.15, insert into a one-touch fitting again, not cutting the tubing to use it. When tubing is re-inserted into a one-touch fitting, make sure to confirm that the tubing was able to go through the release bushing smoothly. (3) Grasp the tubing, slowly push it straight (0 to 5°) into the One-touch fitting until it comes to a stop. (4) After inserting the tubing, pull on it lightly to confirm that it will not come out. If it is not installed securely all the way into the fitting, this can cause problems such as air leakage or the tubing pulling out. (5) When attaching tubes, resin plugs, metal rods, etc., do not push the release button while attaching. Also, do not push the release button before attaching. This may cause releasing. 2) Detaching of tubing (1) Push in the release bushing sufficiently. When doing this, push the collar evenly. (2) Pull out the tubing while holding down the release bushing so that it does not come out. If the release bushing is not pressed down sufficiently, there will be increased bite on the tubing and it will become more difficult to pull it out. (3) When the removed tubing is to be used again, cut off the portion which has been chewed before reusing it. If the chewed portion of the tubing is used as is, this can cause trouble such as air leakage or difficulty in removing the tubing. 3) When attaching resin plugs or metal rods to the tube, do not push the release button while attaching. This may cause releasing. 4) Connecting products with attached metal rods (1) After attaching products with attached metal rods such as the KC series, to the one-touch fitting, please do not use tubes, resin plugs, or reducers, etc. This may cause releasing. Insertion Force of Series KKA Caution 500 400 300 200 100 0 0 0.1 0.2 0.3 0.4 0.5 Charging pressure MPa Insertion force N KKA9 KKA8 KKA7 KKA6 KKA4 KKA3 Handling 1. When connecting the plug, hold the plug securely. The plug may be uncoupled due to reaction at the time of connection. 2. When connecting a plug, insert it securely until a click sound is heard from the socket. After the connection, gently pull the plug to see whether it will release. If not securely inserted, the plug may pop out due to the pressure. Also, do not touch the sleeve until the plug is securely inserted. Otherwise, it may lead to a malfunction. 3. When connecting the plug, insert it straight into the socket. If not inserted straight, the socket and/or plug may be damaged or cause a malfunction. 4. When releasing the plug, hold it securely. The connection pipe may move due to reacting stress and/or residual pressure on the plug side. 5. Do not press the inside of the socket with an incompatible plug and/or with a stick. The internal fluid may be ejected and cause a dangerous situation. Also, the ejecting internal fluid may cause the sealings to come apart resulting in the product not functioning. Plug Insertion Force in Pressurized Condition Insertion Force of Series KK 350 300 250 200 150 100 50 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Charging pressure MPa Insertion force N Series KK6 Series KK4 Series KK3 Series KK2 S Couplers Specific Product Precautions 3 Be sure to read before handling. Refer to front matter 56 for Safety Instructions and pages 13 to 16 for Fittings and Tubing Precautions. 183 KQ2 KQB2 KS KX KM KF M H/DL L/LL KC KK KK130 DM KDM KB KR KA KQG2 KG KFG2 MS KKA KP LQ MQR T A