STH/Q Set Up Instructions
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Before using any Fluid Metering, Inc. product read the following safety instructions as well as specific product specifications and operating instructions. Warning! Fire, electrical shock or explosion may occur if used near combustibles explosive atmosphere, corrosive air, wet environment or submerged in fluid. Turn off the electrical power before checking pump for any problems.Connect motor, speed controllers, or any other electrical devicesbased on Fluid Metering Inc. specifications. Any unauthorized work performed on the product by the purchaser or by third parties can impair product functionality and thereby relieves Fluid Metering, Inc. of all warranty claims or liability for any misuse that will cause damage to product and/or injury to the individual. Power cables and leads should not be bent, pulled or inserted byexcessive force. Otherwise there is a threat of electrical shock or fire.Replace any inline fuses only with fuse rating as specified by FluidMetering, Inc.When pump/drive is under operation, never point discharge tubinginto face or touch any rotating components of pump. In a power down thermal overload cut-in condition, unplug or turn off power to pump. Always allow a cool down period before restarting: otherwise, injury or damage may occur.For 30 seconds after power is removed from pump/drive: do not touch any output terminals. Electrical shock may occur because of residual voltage. Caution! Fire, electrical shock, injury and damage may occur if not used in accordance with Fluid Metering, Inc. specifications and operation instructions. Do not put wet fingers into power outlet of unit.Do not operate with wet hands. Do not operate drive assemblies that require a hard mount (to be bolted down) unless they are mounted per Fluid Metering, Inc. specifications, if not injury may occur and/or damage to unit.Do not touch any rotating pump or motor components: injury may occur.Do not run pump dry, unless designed for that service.Running dry is harmful to the pump, and will cause excessive heating due to internal friction.Check pump rotation and inlet/outlet pump port orientation before connecting power to pump. If not injury may occur.When pulling out cords from outlets do not pull cord, grasp plug to prevent plug damage or electrical shock.Fluid Metering, Inc. Drive Motors become HOT and can cause a burn . DO NOT TOUCH! REQUIRED TOOLS: 2.0 GENERAL SET-UP 1.Analytical Pan Balance 2.Hex Key Driver for Adjusting Stroke Length:STH: 3/32" Hex Driver STQ: 7/32" Hex Driver 3.A removable wicking thread lock (loctite 290) 2.1Setting Dispense Stroke Rate Strokes Per Minute (spm): For fluids of 500cps viscosity or less a stroke rate of 120-350 spm max is ideal. For fluids with greater than 500cps a slower rate is recommended. 2.2Fluidics: 1.0 PUMP MOUNTING: For optimum pump per Figure A -formance it is recommended that your FMI pump Outlet (Dispense) Tubing: For best dispense performance use rigid Teflon tubing (to reduce peristaltic action) with an equal or smaller I.D. than the inlet (suction) tubing. Inlet (Suction) Tubing: To avoid cavitation use the most resilient tubing possible with the largest inside diameter (I.D.) be mounted in a vertical position with the pumphead down in a 6:00 o'clock position and the motor at 12:00 o'clock.This orientation will allow air bub- bles that enter the pumping chamber to directly exit through buoyancy assistance. Figure A >

IN-ST431-08 3.4Dispense Volume Values for FMI STH/STQ Pumps: 1) Speed - Optimum results for fluids 500 cps or less is between 120-350 rpm. MODEL > ML/REV MIN ML/REVMAX 2) Cavitation: Use the largest suction tubing youcan to avoid cavitation. STH00 0.002 0.025 STH0 0.005 0.050 3) Splashing can usually be avoided by modifying dispense tip to larger I.D.and/or decreasing dispense speed. 4) Hanging drop at dispense tip can be avoided by: 5) High viscosity dispensing requires: STH1 0.010 0.100 6) Bubbles in discharge a) Use of rigid discharge tubing b) Small dispense tip c) Increasing speed a)...