Assessments - 3, GPA: 4
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WARNING warns about hazards that can cause serious personal injury, death or major property damage if ignored. CAUTION warns about hazards that will or can cause minor personal injury or major property damage if ignored. The label NOTICE indicates special instructions, which are important but not related to hazards. Hazardous voltage. Can shock, burn, or cause death. Ground pump before connecting to power supply. Disconnect power before working on pump, motor or tank. WARNING Carefully read and follow all safety instructions in this manual and on pump. Keep safety labels in good condition. Replace missing or damaged safety labels. Wire motor for correct voltage. See “Electrical” section of this manual and motor nameplate. Ground motor before connecting to power supply. Meet National Electrical Code, Canadian Electrical Code, and local codes for all wiring. Follow wiring instructions in this manual when connecting motor to power lines. BEFORE INSTALLING PUMP, BE SURE TO READ THIS OWNER’S MANUAL CAREFULLY. CAUTION Mechanical shaft seals do not run dry. Fill pump with water before starting or pump will be damaged. The motor on this pump is guaranteed by the manufacturer and in event of failure it must be returned to an authorized service station for repairs. Motor warranty is void if repairs aren’t made by an authorized repair station. INSTALLATION Suction Piping The pump should be installed as close as possible to the source of water in order to minimize the length of suction piping. The suction pipe should never be smaller in diameter than the suction opening of the pump. It must be free of all leaks, and should slope continuously upward from the water source to the pump, with no high spots, which can trap air. A foot valve must be used to maintain the prime. General Piping Instructions In order to avoid strain on the pump, both the suction and discharge piping should be properly supported, and a pipe wrench should be put on the suction and discharge bosses when installing pipes in them. Electrical Connections Remove the end cover (canopy) from the motor, and using the diagram on top of the motor, make sure it is connected for the correct voltage. The motors on “DD” Series pumps are designed to be used with either 115 or 230 volt supply by changing connections as shown on the diagram. CAUTION Connecting the motor to the wrong voltage can cause serious damage. “Table 2” lists branch fuse size ratings and recommended supply wire for each pump. Grounding the motor Make sure that the green lead wire is securely connected to the green ground terminal screw on the motor terminal board, “Fig. 1”. This wire must be connected to the electrical system ground (provided by the power company) or to another adequate ground. CAUTION Failure to ground the pump properly can result in serious or fatal injury. Typical Discharge Plumbing Options Vertical Discharge Gate Valve Tee Discharge Pipe Base Suction Pipe Foot Valve Horizontal Discharge Gate Valve Priming Plug Discharge Pipe Union Tee Base Suction Pipe Foot Valve Priming the Pump Fill the pump and suction piping completely with water before starting. Never operate the pump without water in it. The mechanical shaft seal and impeller can be damaged if run dry. If the pump does not deliver water in 20 - 30 seconds, some air may be trapped. Stop the pump, refill with water, and start again. SERVICE THE PUMP 1. Remove the motor from the pump case. 2. Take off the motor end cover (canopy). 3. Remove the impeller from the motor. To keep the motor shaft from turning while unscrewing the impeller, hold shaft by inserting a 7/16” (11.1 mm) open-end wrench at the 7 o’clock position of the switch end of the motor, as shown in Figure1. The motor shaft has flat surfaces at that point. If any type of wrench must be used on the impeller, be sure to protect the impeller surfaces by putting a shop cloth or other protection between the wrench and the impeller. Figure 1 Capacitor Terminal Board Ground Screw 4. Remove the rotating part of the seal by first removing the square rubber drive ring (Figure 2) with a small screwdriver or knife blade. The remainder of the rotating portion is then loose and may be removed easily. Figure 2 Impeller Impeller Hub Rubber Drive Ring Face of Sealing Washer Shaft Shoulder 5. Remove the seal plate, which is now free. Push the seal seat out of the seal plate from the back side. Clean the cavity, from which the seal seat was removed. Also clean the motor shaft. 6. Replace the seal plate on the motor. 7. Dip the seal seat in a soap solution or clear water for lubrication and install in the seal cavity. Press fi rmly in place with fingers, If it cannot be positioned with the fingers, put the cardboard washer (furnished with the seal) on the seal face and press the seat in place with a piece of pipe or other tool, as shown in (Figure 3). Remove the cardboard washer and clean the polished seal surface with a soft cloth. Be very careful not to damage or scratch the...
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