Pneumatic Clean Series

Precision Clean Regulator SRP671Specific Product PrecautionsBe sure to read before handling.Refer to pages 7 to 16 of Front matter for safety instructions and common precautions for clean series.Design and SelectionWarningqTypes of fluidUse with air, N2, Co2 or Ar as fluids. Consult SMC if theproduct is to be used with other fluids.Do not use toxic or corrosive gases because the bleedmechanism is adopted on the product to discharge fluids fromthe bleed port.wDo not use fluid containing solid matter.To prevent malfunction caused by such substances, install amist separator on the upstream side of the regulator.eWhen using air containing a large amount of drainage,install an air dryer or after cooler upstream of theregulator.It will cause malfunction or failure.rDo not use in a place subject to heavy vibrations and/orshocks.tInstall a protection cover if the product is exposed todirect sunlight.yBlock off heat radiation with a cover if a heat source is ata close distance.CautionqSMC recommends the secondary pressure be setwithin a 25 to 85% range of the supply pressure.Pressure gaugeqAvoid use in an environment where pulsation in pressure or alot of vibration is generated.wConsult SMC regarding high frequency operation of theproduct.MountingCautionqThe sealed package should be opened in a cleanroom.The product is sealed in a double bag in a clean room. It isrecommended that the inner bag should be opened in a cleanroom or other clean environments.wFlush out the piping.Flush and clean the products before connecting them. If debrisor scale remains in the piping, it can cause malfunction orfailure.eDo not allow the sealing material to enter the piping.When screwing in the pipes and joints, make sure that cuttingdust from the pipe, threads, sealing material, etc. do not enterthe piping. If debris or scale, etc. remains inside the piping,failure or malfunction may result. Also, when thread tape isused, leave 1.5 to 2 threads exposed at the end of the pipe.rConfirm the mounting orientation.The mark IN indicates the inlet of fluid and the mark OUT theoutlet. The equipment will not operate normally if mounted inthe reverse direction.tDo not block the bleed port.If the bleed port is blocked, the product will not operateproperly.Pressure gaugeCautionWarningPressure AdjustmentqDo not use tools to turn the pressure regulatorknob.The pressure regulator knob may be damaged if handled withtools. Be sure to handle the knob manually.wSet up the regulator while verifying the pressure that isindicated on the supply and the downstream pressuregauges. Turning the handle excessively could damage theinternal parts.Turning the knob excessively will damage the internal parts.CautionMountingqDo not apply impacts to the regulator by dropping or hitting itduring transfer or installation.It can cause inaccuracy in indication.wDo not install the regulator in an environment of high pressure orhigh humidity.It will cause malfunction or failure.eWhen screwing in the pressure gauge, be sure to apply thewrench to the 2 flat chamfered sides of the square. Holding otherparts to screw in the pressure gauge may cause air leakage ordamage.qPerform pressure adjustments only after releasingthe lock.The pressure regulator knob will not rotate when it is locked.To release the lock, pull out the pressure regulator knob. Theknob will be damaged if turned with excessive force.Lock the knob again after adjusting the pressure by pressing itdown.wAdjust pressure in an upward direction.A correct pressure setting cannot be achieved by adjusting thepressure downward. Turning the pressure regulator knobclockwise will increase the downstream pressure and turningthe knob counterclockwise will decrease it.eConfirm the primary pressure.The downstream pressure must be set at 85% or less of thesupply pressure. Failure to observe this procedure could causethe downstream pressure to fluctuate.rA small amount of fluid is consumed from the bleed port.The bleed mechanism is adopted for high precision pressureadjustment. Therefore, a small amount of fluid is constantlyconsumed from the bleed port but this is not abnormality.Clean RoomCleanRegulatorRegulator647