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1W W it PRIOR TO INSTALLATION: OPERATION: Tighten bolts before installing pump to make sure Your pump has been tested prior to shipment and is ready for that they bave proper torque. use. It is completely self-priming and no initial filling with liquid is required. To begin pump operation, open the air *. INSTALLATION: flow control valve to allow sufficient cycling rate for the NOTE: The pipe.thread connections on this pump to prime (50 to 90 cycles per min.)..After pumping pump are plastic. They seal much easier than starts, adjust the air flow control valve for the de- metal threads. Hand tighten to seal. Over S11ed pumping capacity. When further opening of the tightening will strip suction and discharge port air flow control valve increases cycling rate without increasing threads. Maximum torque is '10 ft-pounds. the flow rate, the pump is being starved of liquid due to suc- Teflon tape is recommended to insure:'°# tion limitations. Further opening of the valve will waste good seal. compressed air and decrease dischar¢e,rate. Set the air flow r control valve for the lowest cycling rate—that—does not decrease SUCTION LINES: flow rate-for the most efficient operation. Due to the high suction vacuum at the suction inlet any air FREEZING OR ICING OF EXHAUST: leak in the suction tubing or connections win allow air to be Icing of the air exhaust can occur under certain conditions of pulled into the suction tubes rather than pulling the fluid into temperature and humidity. Icing is more likely to occur when the pump. The pump will then discharge a mixture of air and operating the pump at high discharge pressures. Icing can be fluid. minimized by using an air dryer in the compressor system. If that is impractical,a Iubricator can-be installed in the air sup- AIR SUPPLY: ply line. The lubricator should be filled with ethyl alcohol Do not connect the unit to an air supply in excess of 100 psi (ethanol). This may be purchased at a drug store. (6.8 bars). Install a shutoff valve in the air supply line to per- GENERAL MAINTENANCE: mit removal of the unit for servicing. When connecting an air - Keep inlet air clean and dry. supply of rigid piping, mount a section of flexible line to fhe - Check penodit Wly for product or au leakage. Tighten any pump to eliminate pipe strain. The weight of the air supply Joint-where leakage is occurring. line and of the filter must be supported by some means other If pump capacity is decreasing check the air valve filter lo- than the air valve cap. Failure to provide support may result cated at the air inlet. It may have become plugged with dirt or in damage to the pump. debris from the air line.Remove and clean filter. COMPRESSED GAS (OTHER THAN AIR)- - When pumping hazardous or toxic materials, diaphragms Any compressed,non-flammable gas may be used to open- should be replaced at regularly scheduled intervals based upon ate this pump. pump [sage. :. • In freezing temperatures, the pump must.be eornpletely HIGH VISCOSITY INSTALLATIONS: drained when idle. I. Position the pump close to the source. If possible, flood -The pump can run dry indefinitely without damage. the suction(that is,the suction inlet should be lower than the - When pumping highly abrasive fluids, reduce discharge level of the fluid being pumped). flow rate or reduce air pressure to prolong diaphragm life. 2. Suction lines should be increased in size — up to three The pump may be shut down indefinitely with liquids in the times the size of the inlet port. Using dual suction ports may pump with no resulting damage to seals or to pump compo- also help to increase capacity. nents. If you are pumping a material that will settle or com- a. Start the pump very slowly using the air flow control pact or set-up,the pump must be flushed before shat down. valve supplied with each pump. Control fluid flow by volume CLEANOUT: If the pump is shut down for cleanout, flush .of air using the air flow control valve—not air pressure. through with an appropriate neutralizing solution and follow with a detergent water flush. Generally,no disassembly is re- TOTALLY SUBMERGED APPLICATIONS:' . quired for most cleanout requirements. For totally submerged applications the air exhaust should be If ultrapure materials are being pumped,then disassembly of taken through an air line away from the pump.The pump can the pump's wetted components is usually necessary. be submerged if the materials of construction are compatible with the pumped liquid and the exhaust is piped above the liq- WARNING: Before disassembly, shut uid level. Piping used for the exhaust should not be smaller off the compressed air line. Bleed the than 3/8" for 1/2" models and 3/4" for I" models. Reduced pressure and disconnect. the ail- line pipe size can restrict the exhausted air and reduce pump perfor- from the pump. The discharge line of the mance. pump may be pressurized find must also be The air flow control valve is normally positioned immediate- bled of its pressure. When the pomp is used ly in front of the pump's air supply. For totally submerged for toxic or aggressive fluids. It should be applications it may be positioned anywhere in the air line be- flushed clean prior to disassembly. tween the dump and the filter-regulator. SEW PARTS GUIDE AND ASSEMBLY INSTRUCTIONS TO PROCEED WITH DISASSF-MB .Y.