Hitachi VH650 Instruction Manual - Page 10

5. Air consumption Using the Air consumption table and the Air compressor size formula, find a correct compressor size. Air consumption table psi Operating pressure (bar) (kgf/cm') 80 (5.5) (5.6) ft/ cycle Air consumption )ltr/cycle) (VH-650 .029 I (.82 ) NV50AA- .025 (.71) 90 (6.2) (6.3) .038 ( 1 . 1) .030 (.85) 100 (6.9) (7) .047 (1.3) .035 (.99) Air compressor size formula Amount of air required =number of Nailers xaverage nails driven each minute per Nailer xair consumption at given air pressure x safety factor (always 1.2) Example: 2 Nailers (VH-650) operating at 100 psi driving 30 nails per minute Amount of air required =2X30X.047(1.3)x1.2 =3.4 CFM (ft3/min)(94 Itrimin) After making the calculations as shown above, you should find a compressor providing 3.4 CFM of air that is required. LUBRICATION It is important that the Nailer be properly lubricated. Without proper lubrication, the Nailer will not work properly and parts will wear prematurely. o Use Hitachi pneumatic tool lubricant. Do not use detergent oil or additives. These lubricants will harm the 0-rings and other rubber parts. This will cause the Nailer to malfunction. o Filter-regulator-lubricator units should always be used. Keep the lubricator filled with Hitachi pneumatic tool lubricant. o If a lubricator is not available, supply 2-3 drops of Hitachi pneumatic tool lubricant into the air plug on the Nailer twice a day. COLD WEATHER CARE O Do not store the Nailer in a cold weather environment. Keep the Nailer in a warm area until beginning the work. O If the Nailer is already cold, bring it in a warm area and allow the Nailer to warm up before use. Reduce the air pressure to 40 psi(2.8 bar 2.8 kgf/cm2). E Remove all nails from the Nailer. C3) Connect the air hose and free-fire (blank-fire) the Nailer. The lowered air pressure will be enough to free-fire the Nailer. Slow speed operation tends to warm up the moving part. A CAUTION • Do not free-fire the Nailer at high pressure. TESTING THE NAILER DANGER • Always wear eye protector. A WARNING • Never use Nailer unless push lever is operating properly. Before actually beginning the nailing work, test the Nailer by using the checklist below. Conduct the tests in the following order. If abnormal operation occurs, stop using the Nailer and contact a Hitachi authorized service center immediately. (1) DISCONNECT AIR HOSE FROM NAILER. REMOVE ALL NAILS FROM NAILER. 0 ALL SCREWS MUST BE TIGHTENED. If any screws are loose, tighten them. % El THE PUSH LEVER AND TRIGGER MUST MOVE SMOOTHLY. Trigger Je Push Lever Do not connect air hose eZtt (2) Adjust the air pressure to 70 psi (4.9 bar 5 kgf/cm'). Connect the air hose. Do not load any nails in the Nailer. 0 THE NAILER MUST NOT LEAK AIR. -10-