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Resumen del manual
2788. SEARS Captive Air* Tanks are pre-charged at the factory. Check the tank Owners Manual to find if air charge needs adjustment. Model FIGURE 7 390.251483 and Model 390.251883 require 40 pounds for proper operation. OPERATION The jet pump can also be mounted on standard horizontal tanks. A mounting kit with an AVC is furnished with tank. (Figure 6). Priming the Pump Instructions are also included. CAUTION IA j NEVER run pump dry. Running pump without TO SERVICE _ water may overheat unit, damaging seals and possibly burning per- PRIMING PLUG _._ SHALLOW WELL JET sons handling pump. PRESSURE / /BUILT.IN CHECK SWITCH __F_L_vBOAU_ LVEI/4, PLASTIC pipE * L_'WARNIN_G_] To NEVERrun pump against closed discharge. do so can bod water inside pump, causing hazardous pressure in unit and possibly scalding persons handling pump. 1. Remove priming plug. Fill pump with water. Replace priming ,_%u. ,%omo_ SIDE plug. If a priming tee and plug have been installed for a long horizontal run, be sure this line is filled and the plug replaced. (Figure 2, Page 4). o0--T v, w VO4.UMECONTROL 2. Start the pump. Water will be pumped in a few minutes; the "Not included with tank flnlnqs kit, time depending upon the depth to water and length of hori. zontal run. If pump does not prime, check for a possible leak in FIGURE 6 the suction line. Reprime. Check to be sure suction lift -dis tance from pumping water level to pump -does not exceed 20 The installation, operation, and care of your Hydroglass* Pump is feet. See °Piping in the Well" on Page 4. very similar to cast iron pumps. We ask, however, that you keep the following points in mind. NOTICE: Use Teflon tape supplied with the pump for making all threaded connections to the pump. DO NOT USE PIPE JOINT COMPOUND. 6 SERVICE MAINTAINING YOUR PUMP Lubrication It is not necessary to lubricate the pump or its motor• The motor bearings are lubricated for life. The mechanical shaft seal in the pump is water lubricated and selt:adjusting. Draining for Winter When the pump is to be disconnected from service, or is in danger of freezing, it must be drained. The pump has a draincock which must be opened. Remove the priming plug to vent the pump. Drain the pressure tank. Drain all piping to a point below the freezing line. To drain an air volume control (AVC), remove the tubing. Turn the AVC upside down. This will permit any water to drain into tank. Dis, assembly and Assembly of Pump The Hydroglass* Pump is designed for ease in servicing and maintenance. 1. Disassemble pump as follows: A Disconnect power. B. Open faucet to relieve pressure. C. Drain pump by opening draincock. Remove pressure switch tubing from fitting on top of pump. D. Remove clamp, Key No. lO, Page 11. E. Remove pump base mounting bolts. Motor assembly and back half assembly of pump can be pulled away from front half. F. Remove O-Rings. 2. Reassembly of pump. A. Clean O-Rings and O_Ring grooves. B. Lubricate O-Rings with petroleum jelly, and place in grooves• C. Slide pump halves together. D. Clean inside of clamp. Place clamp around pump halves. Ahemately tighten clamp screw and tap clamp around outside with plastic mallet. This will insure proper seating of O; Ring and clamp. E. Assemble base mounting bolts• Connect pressure switch tub ing and close draincock. F. prime pump and turn on power. REMOVING MOTOR FOR SERVICE AND REPLACING SHAFT SEAL If it is necessary to remove motor, always replace the shaft seal. We suggest you purchase this item, UIO9_A, and have it on hand for future use. NOTICE: The seal consists of two parts, a rotating member and a ceramic seat. The surfaces of the seal are easily damaged. Read instructions carefully. Remove motor as follows: 1. Disassemble pump per instructions above. 2. Remove diffuser and impeller as follows (Key Nos. 7 and 8, Page 10. A. Remove ,_rews holding diffuser. B. Loosen two screws and remove motor canopy. C. If motor has capacitor, partially unscrew capacitor clamp and move capacitor to one side• e_ [AWARNINGJ Risk of electrical shock Do not touch capacitor terminals with body or any metal object. D. Hold motor shaft with a 7/16" wrench on the shaft flats. E. Turn impeller counterclockwise when facing it. 3. Remove pump back half from motor by unscrewing four (4) nuts. Pry back half off motor by inserting two (2) screwdrivers between the back pump half and the motor flange. This will force rotating portion of seal off shaft. See Figure 8. ( ) 4750194 FIGURE 8 4. Place back half of pump on flat surface and tap out ceramic seat. See Figure 9. 5. Clean seal cavity. 6. Install new seal. A. Clean polished surface of ceramic seat with clean cloth• B. Wet outer edge of O-Ring with detergent solution. SERVICE C. With finger pressure press seat firmly and squarely into cavity. See Figure IOA. Polished face of seat faces inside of pump. If seat will not locate properly, pLAce cardboard washer over polished face and use piece of 3/4" standard pipe for press ing purposes. See Figure'10...
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