User manual WA KATES N

[. . . ] All controllers are constructed substantially, but pipe supports should be located so that the controller is not subject to mechanical load due to piping, or to the expansion or contraction of piping. The controller should be installed at a point in the pipe where it will be completely filled with liquid under all conditions of operation. The preferred axis of the controller is vertical, with the bonnet up. INLET IS AT SIDE and outlet connection is at bottom. [. . . ] The controller operates by downward flowing liquid and is self cleaning for most liquids. Downflow design also will allow drainage on shutdown of many systems if discharge shutoff valve is closed after inlet shutoff valve. It is not necessary to remove the controller from the line to clean. If installation includes proper shutoff and bypass valves, operate these and take controller off stream or control. Arrange a clean area where internal parts can be placed and kept free of dirt. Remove bonnet bolts, lift bonnet assembly straight up, remove bonnet O-ring, and place both in the clean area. Lift out the torque tube and place in the clean area. Lift out the entire internal assembly consisting of the spring adjustment nut, the spring cap, the spring, the retaining pin, the valve rod, the valve rod nut, the impeller cylinder, the valve sleeve, and the impeller, and place all in the clean area. Stand the internal assembly on a flat surface that will not damage the bottom of the valve sleeve. Push the spring cap down by hand, hold it, and remove the retaining pin from the valve rod. Note the position of the top of the spring adjustment nut with respect to the top of the valve rod, and remove. Release pressure slowly and lift off spring cap and spring, and place in the clean area. Remove the valve rod nut and take apart the internal assembly and place in the clean area. Remove the valve tube lock screws and lift out the valve tube and place in the clean area. DO NOT remove the orifice plate unless it is damaged or unless the orifice plate O-ring and lower body O-ring must be replaced. If the orifice plate must be removed, remove the flange bolts and lift off the upper section of the controller body (after first disconnecting inlet piping). Remove both existing O-rings by prying them out, using a blunt-ended hook, being careful not to scratch either groove. Install new O-rings; replace the orifice plate, and the body's upper section, making sure that the upper body section seats squarely on the lower body section. Thoroughly clean all parts that have been removed from the controller by immersing them in a suitable solvent. Clean and flush inside of flow controller body and the valve tube with the solvent, and drain. All surfaces, especially the metering orifice, the valve tube and integral valve ports, must be COMPLETELY CLEAN. Any dirt, sediment, coating or gummy residue must be completely removed. [. . . ] Replace the bonnet, and put the controller in service by following Steps 1-8 listed under the heading "START UP PROCEDURE". BLT 302 - 01 BLT 302 - 01 PRODUCT WARRANTY The W. A. KATES COMPANY guarantees every piece of equipment manufactured by it to be inspected, tested, and free from defects in workmanship or material when shipped from its factory. No warranty of corrosion resistance of any parts or assembly is expressed or implied. This guarantee is valid for one year from date of shipment from its plant. [. . . ]