Series LQ1/LQ3/LVN/LQHB Fluoropolymer Fittings/Needle Valve/ Bore Through Connector/ Precautions 2 Be sure to read before handling. Refer to front matter 41 for Safety Instructions. 1. Perform maintenance in accordance with the procedures in the instruction manual. Improper handling can cause damage. 2. When removing or reinstalling fittings, remove any remaining chemicals and carefully replace them with DI water (pure water) or air, etc., before beginning work activities. 3. Tightening of taper threads for piping Because the taper threads are made of resin, minute leakage may gradually occur due to stress relaxation. Perform periodic inspections, and if leakage is detected correct the problem by additional tightening. If additional tightening becomes ineffective, replace the fitting with a new product. 4. Check the following during regular maintenance, and replace components as necessary. a) Scratches, gouges, abrasion, corrosion b) Twisting, flattening or distortion of tubing c) Hardening, deterioration or softening of tubing 5. Do not repair or patch the replaced tubing or fittings for reuse. Maintenance Warning 1. Do not use in locations having an explosive atmosphere. 2. Do not operate in locations where vibration or impact occurs. 3. In locations near heat sources, block off radiated heat. Operating Environment Warning 1. Operate within the range of the maximum operating pressure. Warning 1. After a long period of non-use, perform inspections before beginning operation. 2. Use sufficient care in the handling of series LQ clean packaging types when their packaging is opened. 3. Series LVN cannot be used as a stop valve. Be careful not to apply any excessive force to the stroke end, which fully opens and closes, to avoid accidental damage or changes in flow characteristics. Caution Operating Precautions 1. Cut the end of the tubing at a right angle and pass it through the fitting nut. After placing the tubing in the holder, push it onto the insert bushing until it stops and clamp it with the knob. As a guide when tightening the tubing with the knob, maintain a uniform gap (approx. 2 mm) on both sides of the holder. . When the tubing is curved, straighten it out before using it. . The tubing may slip if there is oil or dust, etc., on the holder. Remove the contamination using alcohol or another suitable cleaner. Installation of Tubing Caution 1. Refer to the applicable tubing sizes shown below for tubing to be used. Use of Tubing Caution Applicable tubing sizes o3 x o2 o4 x o3 o6 x o4 o8 x o6 o10 x o8 o12 x o10 o19 x o16 o25 x o22 1/8" x 0.086" 3/16" x 1/8" 1/4" x 5/32" 3/8" x 1/4" 1/2" x 3/8" 3/4" x 5/8" 1" x 7/8" 1 1/4" x 1.1" 1 1/2" x 1.33" Standard size 3.0 4.0 6.0 8.0 10.0 12.0 19.0 25.0 3.18 4.75 6.35 9.53 12.7 19.0 25.4 31.75 38.1 Tolerance ±0.06 ±0.1 ±0.15 ±0.1 ±0.12 ±0.15 ±0.2 ±0.2 Tolerance Standard size 0.5 1.0 1.5 0.5 0.8 1.2 1.6 1.9 2.2 Metric sizes Inch sizes Connection O.D. (mm) Internal thickness (mm) tubing size +0.2 .0.1 +0.3 .0.1 +0.2 .0.1 +0.3 .0.1 ±0.25 ±0.2 823 LVC LVA LVH LVD LVQ LVP LVW LQ1 LQ3 LVN LQHB TL TIL TLM TILM TD TID TH TIH