MODELNO. 390.253250 CAUTION: Read and Follow All Safety Rules and Operating Ins_rucfians Before FirstUse of This Product. ULTra-STAGEJET PU P • Safety Instructions . Installation . Electrical Save This Manual For Future Reference. • Operation . Maintenance . Repair Parts Sears, Roebuck and Co., Hoffman PRINTED IN U.S.A. Estates, IL 60179 U.S.A. Form No. F642-9S02 (Rev. 6/20/97) CONTENTS INTRODUCTION/WARRANTY UNTRODUCTION .................................. 2 MAJOR COMPONENTS .............................................. PUMP PERFORMANCE ............................................... INSTALLATION ........................................................ 3 4 5-8 ELECTRICAL .......................................................... OPERATION ........................................................ 9-10 10-11 HELPFUL HINTS / MAINTENANCE 11-14 TROUBLESHOOTING ..................... GUIDE .................................. 15 REPAIR PARTS ..................................................... FULL Please read our instructions before installing and using your Deep Well Jet Pump. This will help you obtain the full benefits of the quality and convenience built into this equipment. It will also help you avoid any needless service expense resulting from causes beyond our control which are not covered by our warranty. 16-19 ONE YE&R W&R_NTY ON PUMPS For one year from the date of purchase, Searswill repair or replace this pump free of charge, if defective in material or workmanship, This warranty does not cover repairs or replacement parts necessary because of abuse, negligence including failure to install, adjust and operate this pump according to the instructions in the owners manual. LIMITATION OF LIABILITY SEARS WILLNOT BE LIABLEFOR LOSS OR DAMAGE TO PROPERTY ORANY INCIDENTALOR CONSEQUENTIALLOSS OR EXPENSE FROM PROPERTY DAMAGE DUE DIRECTLY OR INDIRECTLY FROM THE USE OF THISPRODUCT. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you, WARRANTY sERvIcE IS AVAILABLE BY SIMPLY CONTACTING THE NEAREST SEARS SERVICE CENTER!DEPART. MENT IN THE UNITEDSTATES ofAMERICA, Forservice outside the U.S.A. contact your local SearsService Center or store. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Sea_, Koebuck and Co., Dept. 817 WA, Hoffman P,ULES FOP, SAFE iNSTALLATiON Carefully read and follow manual or on pump all safety instructions in this This is the safety alert symbol. When you see this symbol on your pump or in this manual, look for one of the following signal words and be alert to the potential for personal injury! Est.ates, mL60|79 AND OPEPJ ,THON 4. Protect pump and piping system from freezing. Allowing pump or water system to freeze could severely damage pump and voids warranty. _k Warns about hazards ous personal ignored. injury, death or major property [&WARNING] Warns cause serious personal damage if ignored. [& CAUTION] Warns cause minor nored. that will cause personal The word NOTICE which are important about hazards that will seri- damage ff or can injury, death or major property about injury hazards that will or property or can damage ff ig- indicates special instructions but not related to hazards. 1. To avoid risk of serious bodily" injury and property damage, read safety instructions carefully before installing pump. 2. Follow local and/or national plumbing and electrical codes when installing pump. 3. Keep well covered while installing pump to prevent leaves and other debris from falling into well, contaminating well and possibly damaging pump. [&WARNINGJ TO avoid serious injux T and equipment damage, limit system pressure to 100 pounds per square inch (PSI) or below at all times. Over-pressure can cause tank blowup; install relief valve capable of passing full pump volume at 100 PSi. 5. With a new well, test well for purity before use. Consult local Health Department for procedure. ] AWARNING]Hazardous cause death, or start voltage. fires. 6. Disconnect electrical power stalling or working on pump. Can shock, source burn, before in- 7. Ground pump with a ground wire run from grounding lug on motor to a grounded lead in the service panel. 8. Line voltage and frequency of electrical power supply must agree with motor nameplate. 9. Use of fuses or wire smaller than size recommended in owner's manual can cause overheating, possible fires, and will void warranty. 10. This pump is a deep well jet pump. It is not designed or intended for shallow well use. Use in a deep well (more than 25' depth to water). MAJOR Tank and Air Volume COMPONENTS Control The tank serves two tractions: 1. 2. It provides a reservoir of water. Some of this water is drawn offwhenever a house fixture is opened (so that the pump doesn't need to start every time you open a tap). It maintains a cushion of air under pressure. A standard tank requires an Air Volume Control (AVC) to add air to the tank when needed. See the instructions included with the AVC for details of installation and operation. A SEARS Captive Air * tank maintains a constant precharge of air in the tank and does not require an AVC. An annual check on the tank pre-charge pressure is recommended. Impeller The pump's impeller rotates with the motor shaft, causing the water to fly out from its rim by centrifugal force. The rotation of the impeller, along with the motion of the water, creates a vacuum at the center of the impeller (the "eye" of the impeller) which pulls in more water. The Vertical Multi-Stage (VMS) pump has two or three ("multiple") impellers; the water feeds through them one after the other, with each impeller adding to the pressure. This allows the VMS jet pump to pull water from greater depths and at a higher pressure than a conventional single stage jet pumps. Jet The jet is a nozzle/venturi arrangement installed in the well which drives water up to the pump from the well, boosting the water pressure going into the impellers. The jet allows water to be lifted from a greater depth than would be possible with only the impeller eye's vacuum. In order to drive the jet, part of the discharge stream from the pump is diverted back "down the hole" to the jet to help lift water from the well into the pump suction. Pressure Regulator The pressure regulator vert the correct amount most efficient operation. pressure regulator may pump's life (see Page pump's efficiency. Pressure is adjusted at installation to diof water back to the jet for the Under certain conditions, the require adjustment during the 10) to restore or maintain the Switch The pressure switch automatically starts the pump when the pressure in the tank drops to 40 pounds per square inch (PSI) and stops the pump when the tank pressure reaches 60 PSI. AND Adapter WHAT THEY DO Flange The VMS pump is equipped with an adapter flange. This adapter facilitates installation and removal of the pump without disturbing piping. See Pages 6 and 7 for more information. Pressure ReliefValve Under certain conditions, VMS pumps can generate very high pressure. The pressure relief valve is installed to make sure that the pressure in the system does not exceed the pressure which the system can carry safely. The pressure relief valve must be able to pass all the water the pump can produce at the system's rated pressure. Install a relief valve (Sears Stock No. 27229) set to open at 75 PSI. between the pump and the tank. There should be no shutoff valves between the pump and the relief valve. See Figures 11 and 12, Page 8, for more information. Pump Mounting The pump base has four equally spaced 3/4" NPT threaded sockets. These will take threaded pipe for legs, to allow enough room to make piping connections under the pump. In the case of a single pipe installation (see below), the pump can be placed directly over the well, using the offset nipple furnished with the casing adapter to connect the pump to the well head. Piping When installed on a 'double pipe' jet, one pipe is the pressure or drive pipe; this pipe sends water down into the well to the jet. The other pipe is the suction pipe; this pipe carries water up to the pump suction from the jet. Because of the pressure requirements and depth of multi-stage jet pump installations, use the chart below for pipe selection. When installed on a singe pipe jet, the well casing serves as the drive pipe, carrying water to the jet. The drop pipe inside the well is the suction pipe, carrying water up to the pump from the jet. Use a 'single pipe' system for a 2" or 3" well; use a 'double pipe' system for a 4" or larger well. See Pages 6 and 7 for details. Follow instructions packed with jet package to get proper nozzle and venturi combination for your pumping depth. Use 1-1/4" pipe for both suction and drive pipes. A 1" nipple, a 1-1/4"xl" facing bushing, and a 1-1/4" coupling are included in the jet package. These must be used with the jet. (See Figure 8, Page 6, for installation details.) PUMP PERFORMANCE Multi-Stage Pump Performance Pump Stock No, 390.253250 1HP Pump (in gallons per minute) Jet Pkg. No. Discharge Pressure P.S.I. 40 60 70 80 Pumping Depth In Feet 90 100 110 120 140 160 180 29670* 40 60 11.3 10.6 10.0 8.6 8.8 7.5 7.6 6.5 6.5 5.5 5.0 4.8 5.0 4.8 5.0 4.7 4.2 3.9 3.5 2.7 2.0 1.5 29902"*t 40 60 11.7 11.0 11.1 9.5 10.2 8.6 9.2 7.8 7.8 6.6 6.4 5.4 5.1 4.7 5.0 4.6 4.5 4.2 4.0 3.4 3.2 2.6 2.1 1.7 29660*'** 40 60 11.7 11.0 11.1 9.5 10.2 8.6 9.2 7.8 7.8 6.6 6.4 5.4 5.1 4.7 5.0 4.6 4.5 4.2 4.0 3.4 3.2 2.6 2.1 1.7 Use 160 PSI Min. Rating Plastic Pipe. * Jet Package No. 29670- 2" Single Pipe (use 1-1/4" galvanized pipe). ** Jet Package No. 29902- 3" Single Pipe (use 1-1/4" galvanized pipe). *** Jet Package No. 29660 - 4" Double Pipe. 1" Must be ordered through Sears Product Service, 1-800-366-7278. 4 210 RNSTALLATION Do not use on shallow wells! (25 feet or less in depth) T Deep well is more than 25' (7.6M) Use New Pipe for Best Results. to water with pump running. Body _ Clean Flow! Casing 1096 0697 From Well Figure I = No Dirt or Scale in Suction Pipe Foot Valve & Strainer Figure 1100 Figure 2 = Foot Valve Must Work 0697 2. Freely 4. Form, Water Won't Flow. 5. 6. Keep Pipe Straight and Angled up to Pump. 7. Figure 3 - No Air Pockets in Suction No Air Leaks in Suction Pipe. Pipe 8. Pipe Joint Compound Will Plastic. If Air Flows Water Won't Use Teflon Tape. Figure 4 = Suction Pipe Must Not Leak 5 = Use Pump On Deep Well Only NOTICE: For proper performance, pump MUST be matched to ejector and to well depth. Use this pump on wells 25' to 210' deep. 1. Long runs and many fittings increase friction and reduce flow. Locate pump as close to well as possible: use as few elbows and fittings as possible. 3. If Air Pockets 822b 0697 1102 0697 Be sure well is clear of sand. Sand will plug the pump and void the warranty. Protect pump and all piping from freezing. Freezing will split pipe, damage pump and void the warranty. Check locally for frost protection requirements (usually pipe must by 12" below frost line and pump must be insulated). Be sure all pipes and foot valve are clean and in good shape. No air pockets in suction pipe. No leaks in suction pipe. Use Teflon tape or PlastoJoint Stik to seal pipe joints. Match pump to well. IMPORTANT: Flow into well must at least equal flow out through pump! Unions installed near pump and well will aid in servicing. Leave room to use wrenches. [ak CAOTION] Motor normally operates at high temperature and will be too hot to touch. It is protected from heat damage during operation by an automatic internal cutoff switch. Before handling pump or motor, stop motor and allow it to cool for 20 minutes. DEEP WELL INSTALLATION Pum Priming Tee and FOP, DOUBLE -- Pump I Gasket Gasket __ Plig PIPE Adapter Flange Drive: 1-1/4" Pipe ipling , Threadlesseoupling[_ ___-L -I_;1_ j Suction: 1-1/4" Pipe or Plastic Pipe Adapter Pipe Nipple _ _ Sae_it_al Drive Pipe -- 1-1/4" Plastic Adapter. -- 1" Plastic Suction orPipe Plastic Ada l 1-1/4" Cou Pipe 1-1/4" Plastic Pipe (Supplied with Ejector) 1-1/4x1" Face Bushing Pipe Adapter -- EjectorAssembly -- Check Valve 1" Nipple 1386 1194 1-'_E 1 0St5ainer Figure 6 - Offset installation Plastic Pipe Shown Piping in The Deep Figure 7 = Over the Well Bnstallation Steel Pipe Shown Well See Figures 6, 7, and 8. NOTICE: Deep well installations are either single pipe (2" wells) or double pipe (4" and larger wells). In a double pipe installation, the larger pipe is the suction pipe and the smaller pipe is the drive pipe (very deep wells may use suction and drive pipes of the same diameter). Plastic pipe is ideal for double pipe installations. Due to its light weight, it is easy to handle and does not usually require a block and tackle for installation and removal. Double Pipe Rnstallation- Plastic 1. 2. Inspect ejector to make sure that nozzle and venturi openings are clean and clear. Inspect pipe for any foreign matter or obstructions. NOTICE: Make sure that no foreign matter enters pipe openings while installing pump. 3. Make sure foot valve operates freely: attach to ejector with a close nipple. Use Teflon tape on male threads. 4. Install nozzle 5. Using Teflon tape on male threads, install special plastic pipe adapter (supplied with ejector) by screwing adapter into 1-1/4" tapped hole in ejector body (see Figures 6 and 8, above). Thread a 1" plastic pipe adapter or a 1" nipple into 6. and venturi in deep well ejector. 8 - Jet Assembly With I" and i - 114" Drive Pipes the 1" tapped hole in ejector body (see Figure 8). 7. Install sufficient plastic pipe in well casing to place ejector at the proper depth. (Your well driller should supply this information.) NOTICE: As a guide, the ejector should be set at least 10 to 20 feet below the lowest water level with pump running, if possible, but always at least five feet from the bottom of the well. , Pipe NOTICE: Use Teflon tape on all male threads on plastic pipe and fittings to prevent air leaks in suction piphag. Figure Tighten all hose clamps securely on plastic pipe. Use two clamps per joint to prevent air leaks into suction pipe. Clamp screws should be on opposite sides of the pipe. Fill pipes with water to maize sure that foot valve and connections do not leak. 9. Install sanitary well seal on top of well casing; use steel nipple through well seal as shown in Figure 6. NOTICE: Align locating lugs on adapter flange and pump base so that pump discharge will be aligned with piping. 10. Install 1" nipple in one side of adapter flange. Slide threadless coupling down over drive pipe from well. Thread adapter flange onto suction pipe from well and align nipple and drive pipe. 11. Slide threadless coupling up and secure nipple to drive pipe. 12. Remove paper backing from adhesive gasket. Apply gasket to adapter flange, making sure that holes line up. 13. Align locating lugs on pump base with locating lugs on adapter flange; attach pump to flange with cap screws provided. DEEP WELL iNSTALLATiON FOR SINGLE PIPE Pump mounted on Casing Adapter x. Offset Nipple ''_ Pipe Clamp Well Casim Water level Pipe Clamp with pump Drive Pipe Pipe L Venturi ing Figure I OA - Use tripod pipe into the well 10 to 20 Feet and lever hoist to lower Nozzle_ Ejector------_ '_----q" Cup Leathers e 5 Feet or more _1 Figure 9 Figure 14. See "Discharge Pipe Sizes" for information ing correct discharge pipe size. Steel ! • ..... b. Leather valve. Piping The special ing. adapter nipple Single Pipe Ejector Single pipe installations Installation require (see Figure 9): steel suction packer-type c. Turned couplings ejector). is not used with steel pip- To more safely lower steel piping into the well, build a tripod out of 2x4 lumber. A couple of pipe clamps can also be made of 2x4s secured with 1/2" bolts (see Figure 10B). Always install the coupling at the top end of the pipe joint and install the pipe clamp below the coupling. This will prevent accidentally dropping the pipe into the well if the clamp slips. With steel pipe, be sure all joints are clean and the ends reamed before installing; use teflon tape or pipe joint compound at each joint to prevent leakage. Use a lever hoist (a "come-along") to lower pipe into well (see Figure 10A). As each section of piping is lowered into the well, fill it with water. This will help prime the system and also serves as a check on leaks which may occur in the piping and foot valve as the piping is assembled. i0B - Pipe clamp detail a. Galvanized regard- i 1. 2. pipe. ejector with built-in foot (supplied with packer-type d. Well casing adapter (supplied with packer-type ejector). Connect ejector to first length of pipe. Use pipe joint compound sparingly on male threads. Lower pipe into casing. Use special turned couplings (included with single pipe ejector package) to increase water flow. Use pipe joint compound sparingly on male couplings threads. Horizontal Offset Pipe Sizes When the pump is set more than 25' to one side of the well, increase the horizontal pipe size to reduce friction. Never use pipe smaller than the pump port size. Pump Up to 25' 25' to 100' 100' to 300' Model Suct. Drive Suct. Drive Suct. Drive 390.253250 1-1/4" 1-1/4" 1-1/2" 1-1/4" 2" 2" NOTICE: Fill pipe with water as each length is added to be sure foot valve and connections do not leak. PRESSURE TANK CONNECTmON @ Air Volume Control Sears Stock No. 2761 TANK To Service I Pump to Tank Piping 1" Discharge Relief Valve Sears Stock No. 27229 "_ Pressure 1/_ Regulat°r Pressure Regulator Piping Tee and 1" Discharge Air Volume Control Tubing/Fitting" Sears Stock No. 27881 / We!l Seal 2355b 0697nc Figure 3. I I = Pump With Standard Tank To Service Figure 2358b0697nc 12 = Pump With Add lengths of pipe until the ejector reaches the proper depth. (Your well driller should supply this information.) 5. To properly seat the cup seals, after the ejector is correctly positioned move the assembly up and down slightly. Water pressure in the casing will then soak the cup seals (see Figure 9). They should seal in 2-3 hours after installation. With ejector set, install well casing adapter. Remove pipe holder. Align locating lugs and tighten adapter to form seal with well casing. Discharge Pipe Sizes If increasing discharge pipe size, install reducer in pump discharge port. Do not increase pipe size by stages. 2. When the pump is set away from the points of water use, the discharge pipe size should be increased to reduce pressure losses caused by friction. • Up to 100 ft run: 1" • 100 ft. to 300 ft run: 1-1/4" Pressure Tank Installation - Deep Well The Pressure Tank provides a reservoir of water under pressure and maintains cushion of air pressure to prevent pipe hammering and possible damage to plumbing components. When water is drawn off through house fixtures, the pressure in the tank is lowered and the pressure switch starts the pump. Tank Tank 1054 Figure 13 = Checking Tank 0697n¢ Tank Pre-charge Connection When a standard tank is used, an air volume control (AVC) adds air to the tank when it is needed. See Figure 11 for typical standard tank installation. To connect AVC to pump, thread a 1/8" compression fitting into tapped hole on the front of the pump. Cut tubing to length to reach AVC; assemble to fitting on pump and to AVC on tank. See installation instructions provided with tank and AVC for details. Precharged • 300 ft. to 600 ft rtm: 1-1/2". Captive-Air* Captive-Air_ Standard 1. Relief Valve Check Pressure with Tire Gauge NOTICE: As a guide, the ejector should be set at least 10 to 20 feet below the lowest water level with pump rtmning, if possible, but always at least 5 feet above the bottom of the well (see Figure 9, Page 7). 4. _' Tank Connection When a precharged tank is used, no AVC is necessary. See Figure 12 for typical precharged tank installation. A precharged tank contains a factory provided air charge. NOTICE: Your pump pressure switch is set for a 40-60 PSI range and requires a tank pre-charge of 40 PSI for proper operation (see Figure 13). See tank owner's air charge. An annual check on tank charge is recommended. ELECTRmCAL WARNING Hazardous voltage. Can shock, burn, or cause death. Groundpumpbefore connectingto powersupply. AGround motor before connecting to electrical power supply. Failure to ground motor can cause severe or fatal electrical shock hazard. A To avoid dangerous or fatal electrical shock, turn OFF power to motor before working on electrical connections. A Supply voltage must be within +10% of nameplate voltage. Use wire size specified in Wiring CharL If possible, connect pump to a separate branch circuR wRh no other appliances on it. Incorwect voltage can cause fire or seriously damage motor and voids warranty. If in doubt consult a licensed electrician. I AWARNING I Disconnect power at service panel before connecting pressure switch. Clamp power cable to prevent strain on ] terminal _screws. Motor wires are connected to these two screws. To convert from 230 to 115 Volts: Move white wire w/black tracer from B to A. Move black wire from A to L1. Wiring (Fig. 14) 1. Install, ground, wire and maintain pump in accordance with your local electrical code and all other codes/ordinances that apply. Consult your local building inspector for local code information. 2. Ground pump permanently using wire of size and type specified by approved local or national codes. ") copper, orounO w,re !iii1 to green ground screw. Connect black and white these power two supply screws, wires one to wire to each screw. It doesn't matter which wire goes to which screw. Y i_ Risk of explosion. Do not ground to gas supply line. 3. Connect ground wire first. Connect to ground first, then to green grounding terminal provided on pressure switch identified as GRD. Ground connection MUST be made to this terminal. Do not connect motor to electrical power supply until unit is permanently grounded; otherwise serious or fatal electrical shock hazard may be caused. 4. For best ground connection, connect to grounded lead in seiwice panel or to metal underground water pipe or well casing at least 10 ft. long. If plastic pipe or insulated fittings are used, run ground wire db rectly to metal well casing or use ground electrode furnished by the power company. 12580994 To Connect Pressure Swi_:ch (Fig. 14) Make sure power to pump has been disconnected at service panel before connecting pressure switch. 1. Match motor voltage to power supply voltage. 2. Remove switch cover. A Figure U4 = n U5/2.30 volt motor wiring connections through ty'pical pressure switch. Dual voltage motors come factory wired for 230 volt operation. Unset shows i 15 Volt conversion, 3. Connect green ground wire to terminal in base or side of switch marked GROUND, GRD, or @ .There may be two ground terminals; connect to either one. Do not a_ter wiring in single voltage motors. Match motor voltage to power supply voltage. WInkING CHART = Recommended MOTOR HP VOLTS MAX. LOAD AMPS BRANCH FUSE* RATING (AMPS) 1 115/230 19.2/9.6 25/15 Wire and Fuse Sizes DISTANCE IN FEET FROM MOTOR TO METER 0 to 50 51 to 100 101 to 200 201 to 300 10/14 (*)Timedelay fuse or circuitbreakersare recommendedin any motorcircuit. 10/12 8/10 6/10 ELECTRICAL / OPE TUON 2360a 0697 2361a A - CHose Regulator Figure R5 _ Priming 0697 1030a 0697 _ B = Fill Pump With Connect marked power supply leads LINE, L, or L1/L2. 5. Motor leads should be connected to switch nals marked LOAD, MOTOR, M or M1/M2. connect them to switch terminals. 6. Make that a. Motor frame a solid metal b. Motor minal to switch is connected connection, ground wire in switch. 7. Replace pressure for operation. The terminals C - Start b. Fill pump 15B). termiIf not, c. Replace thread; Pump _ D = Adjust and pipe Regulator to pressure or is connected switch cover. switch to ground by 2. ter- operate pump switch are conmetal connection is now wired Pump ]&WARNINGIBurn hazard. NEVER run pump dry. Running pump without water may cause pump to overheat, damaging seal and possibly causing burns to persons handling pump. Fill pump with water before s_ing. a. Close regulator 15A). before valve (turn clockwise If pressure does not build up after sevel_al times, check the following: a. Suction pipe in the water. b. Suction pipe has no leaks. out. Make Air can leak sure in even all joints c. Control valve, and operating tape on where priming water won't pump leak are tight. check valve, correctly. or foot valve installed d. Pump trying to lift water more than rated lift for deep well ejector used (including compensation for horizontal offset). and faucets Teflon (Figure Stax_t Pump: NOTICE: steam burns. NEVER run pump with discharge shut off, which can boil water inside pump body. Steam in pump may cause it to explode and scald anyone near. NOTICE: Open water system pump for the first time. 1. Remove pressure gauge. using water If pressure does not build to 50 PSI, repeat steps a, b, and c under Step No. 1 two or three times to remove entrapped air from the suction pipes. 3. I&WARNING ]Risk of explosion pressure gauge, tighten gauge. with Pressure should increase rapidly to 50 potmds per square inch or more as ejector and pump prime. If so, go to step 4, below. not Pump suction NOTICE: If a priming tee and plug have been installed for a long horizontal run, be sure to fill suction pipe through this tee and replace plug. (Don't forget to teflon tape the plug.) either: Risk of electric shock. Do unless motor and pressure nected to each other by a solid and are grounded. Priming _ Pump 4. sure Water e. Be sure pump is not airlocked. In offset installations, pump suction port should be highest point in suction pipe; there should be no sags in suction pipe (run it straight and at a slight angle upward from well head to pump). priming - see Figure 4. 10 Once slowly unit has primed and pressure stabilized, open (turn counterclockwise - Figure 16A, OPE T ON / MAUNTENANCE Air Control regulator valve until pressure falters (pressure gauge needle flutters; pump may become noisy- see Figure 16B). At this point, close (turn clockwise) regulator valve slightly until pressure stabilizes. This setting provides maximum flow (Figure 16C). 5. 7. Using How HINTS To Handle _N'enH In some areas well water contains gases which must be allowed to escape before the water is used. To deliver gas-free water suspend a pipe, closed at the bottom and open at the top, so that it surrounds the suction pipe inlet. (See Figure 17). Since the gases rise in the well casing, the water sucked down thi°ough the pipe and into the suction pump is free of gas. This type of well must be vented to the outside of any enclosure. Cleaning Figure 16A - Open Regulator Compound Gauge seems to be operating ineffigauge can sometimes help de- A compound gauge is a combination vacuum and pressure gauge which will indicate (1) receding water level in the well, (2) leakage in the suction line or in the pump, or (3) clogged impeller. To use, install the gauge in the air volume control (AVC) port in the base of the pump. Open all shutoff valves between pump and household piping. Tighten regulator screw as far as possible. After running pump a few minutes to eliminate a!l air from pipes, loosen regulator screw until compound gauge shows 15" of vacuum. This setting indicates that the pressure regulator is set for delivery of the highest volume of water possible. Let the pump run a few minutes; if the water level in the well is falling, the vacuum will increase, ff necessary, reduce the regulator setting to b,ing the vacuum reading back to 15". If the pump does not develop 15" of vacuum according the gauge, you may have air leaks in the suction line or a clogged impeller. / MAUNTENANCE A Gaseous the If the pump or system ciently, the compound termine the problem. Check system by alternately opening and closing faucets in the system. With faucets open, pressure will drop until pump starts; with faucets closed, pressure will build up until pump shuts off. There are conditions of deep well operation when the regulator valve may be completely open without any falteling of pressure. In this case, opec-ate pump with regulator valve open. HELPFUL WeIBs Flowing wells or wells with little or no drawdown, could create a special problem in air control in the operation of your standard tank system. In such cases, a pre-charged tank (which needs no air control) is recommended. Pump may draw well down far enough at this point to lose its prime. If so, close regulator valve until pressure is stable throughout pumping cycle. Close faucets and allow pump to pressurize tank and shut off. 6. In Nowing the Deep Well Jet 1. 2. Disconnect Disconnect power. piping and well seal or casing adapter. 3. 4. Withdraw jet assembly from the well. Unscrew and remove the venturi. Remove zle with a socket wrench and clean. 5. Replace all parts, reprime, and turn on power. Valve Figure 16B = Watch for Pressure Gauge to Flutter cap Figure ! 6C = Close Regulator Pressure Stabilizes V, dve until Figure 11 R7 = Gas/Air Control the noz- in Well HAmNTENANCE Pump 1. Diassembly . Pull disconnect switch. Disconnect power fines from pressure switch. Remove the two cap screws holding the pump to the flange adapter. Don't disturb the piping in the well. 2. 3. Remove surfaces the flange adapter clean. gasket and scrape 4. Leaving the tubing in place, unscrew and remove the straight barbed fitting at the pressure switch. 5. Draw a line down the side of the pump with a marker to help alignment during reassembly. Mark the pump from the motor to the base volute (see Figure 18). Hold the motor shaft with priers or vice grips through the opening in the pump adapter. Unscrew the impeller nut off the end of the shaft (see Figure 20). the Figure . Figure . 20 The impellers are keyed to the shaft and do not unscrew. Insert two screw drivers on opposite sides under the exposed impeller and pry the impeller off (Figure 21) to remove it. ]8 Turn the pump upside down on the bench and block it. Remove the four cap screws fi'om the base, With a mallet, tap upward on the base to loosen it. Lift the base off of the intermediate volute (see Figure 19). Figure 2 R 10. Carefully tap a small screwdriver or thin bladed chisel in between the intermediate volute and the pump adapter in two or three places around the pump to separate the castings (Figure 22). Do not mar the sealing surfaces; do not break pieces out of the adapter or volute - the castings are easily damaged. Figure 7. 19 To reduce the chance your foot, lay it down won't roll. of dropping the pump onto on the bench; block it so it Figure 12 22 HAUNTENANCE 11. Remove the intermediate volute and slide the im- peller spacer off of the shaft. 12. Remove the impeller. Don't disturb the you are only replacing the seal. 13. Rotate the seal spring retainer cup so lines up with the shaft keys; remove spring. 14. Remove the two cap screws holding bracket to the motor. . shaft keys if Carefully slide the adapter over the shaft (see Figure 24). Do not damage the shaft sealing surface; it is highly polished and any slight scratches or nicks will ruin it. that the slot the cup and the adapter 15. With two screwdrivers on opposite sides of the pump, carefully pry the pump adapter away from the motor. This will puU the seal off of the motor shaft. Use caution to make sure that the ceramic seal does not dig into the shaft and scratch the shaft's sealing surface. lns_llation 1. 2. 3. Of New Seal Figure Clean all gasket surfaces thoroughly before reassembly. Clean the seal bore cavity in the pump adapter. Wet the rubber seat ring with soapy water and push the stationary part of the seal into the seal bore cavity. Use a piece of 1" pipe pressing on a cardboard washer (to prevent damaging seal surface) as a press. Make sure that the seal half is fully seated in the seal bore cavity Remove the cardboard once the seal is in place. Make sure that the shaft keys are in place on the shaft. If they are not, squeeze them in place now with slip joint pliers. Do not tap them or hit them with a hammer; you could bend the shaft (see Figure 23). When the keys are correctly installed, the adapter will pass over the keys without interference. 5. 6. Using the alignment marks made before disassembly, line up the adapter with the motor and bolt the adapter in place. Tighten the cap screws evenly. Push the shaft seal and seal spring onto the shaft, after making sure that the seal faces and shaft are clean. Take care that the shaft shoulder does not damage the carbon seal face. Follow the seal spring with the spring holder; compress the spring and give the spring holder a quarter turn to lock it under the first shaft key (see Figure 25). Figure 7. Use plierswith careno hammers. 8. Figure 23 13 24 25 Slide the first impeller onto the shaft; follow it with the impeller spacer. Twist the impeller on the shaft to make sure that the shaft key is still in place and the impeller is locked to the shaft (the shaft should turn with the impeller). Install a new volute gasket, lining up the bolt holes with the bolt holes in the adapter. Make sure the gasket is right side up so that the water passage holes line up with the water passages in the volutes. HAINTENANCE Install the intermediate volute, aligning it with the mark made before disassembly. Use the long cap screws to check this alignment. It cannot be stressed too strongly that all bolt holes and water passages of all gaskets and volutes MUST line up with each otheg or the pump will not be assembled correctly. 10. Make sure the second shaft key is in place and install the second impeller. Twist the impeller to make sure that the shaft key is stir in place. Hold the motor shaft with slip-joint pliers or vice-grips and install and tighten the impeller locknut. Tightening the lock nut automatically spaces the impeller correctly. Do not overtighten. 9. 12. Insert the four base capscrews and tighten evenly (see Figure 26). These should be easy to install if everything is correctly aligned. If not, don't force them; go bach over your work and find and correct the misalignment. Bolts should be easy to insert. Make sure all marks line up. 11. Install the base volute gasket. Make sure the gasket is _ht side up so that the waterpassage holes line up with the water passages in the volutes. Install the base volute, using the alignment marks made before disassembly. Maize sure that the pump discharge will correctly meet the the piping when the pump is reinstalled. Figure 26 13. Reinstall the pressure sure tube. switch barb fitting and pres- 14. Reinstall the pump on the adapter flange (use a new gasket) and reconnect the wiring and grounding. Pump is now ready for operation. 14 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Motorwill not run 1. 2. 3. 4. Disconnect switch is off Fuse is blown Starting switch is defective Wires at motor are loose, disconnected, or wired incorrectly 5. Pressure switch contacts are dirty 6. Wrong voltage !. 2. 3. 4. Motor runs hot and overload kicks off 1. Motor is wired incorrectly 2. Voltage is too low 1, 3. Pump cycles too frequently Motor runs but no water is delivered I *(Note: Check )rime before looking for other causes. Unscrew 3ressure gauge and see if there is water in priming hole) "1. Pump in a new installation did not pick up prime through: a. Improper priming b. Air leaks c. Leaking foot valve *2. Pump has lost its prime through: a. Air leaks b. Water level below suction of pump 3. Ejector or impeller is plugged 4. Check valve or foot valve is stuck in closed position 5. Pipes are frozen 6. Foot valve and/or strainer are buried in sand or mud CHART Be sure switch is on Replace fuse Replace starting switch Refer to instructions on wiring. Check and tighten all wiring. 5. Clean by sliding piece of plain paper between contacts 6. Make sure motor voltage exactly matches power supply voltage. Refer to instructions on wiring 2. Check with power company. Install heavier wiring if wire size is too small. See wiring instructions. 3. See section below on too frequent cycling 1. In new installation a. Re-prime according to instructions b. Check all connections on suction line, air volume control, and ejector c. Replace foot valve 2. In installation already in use: a. Check all connections on suction line, air volume control, ejector and shaft seal b. Lower suction line into water and re-prime. If receding water level in a shallow well operation exceeds suction lift, a deep well pump is needed. 3, Clean ejector or impeller; see Maintenance 4. Replace check valve or foot valve 5. Thaw pipes. Bury pipes below frost line. Heat pit or pump house. 6. Raise foot valve and/or strainer above well bottom Pump does not deliver water to full capacity (Also check point 3 immediately above) 1. Water level in well is lower than estimated 2. Steel piping (if used) is corroded or limed, causing excess friction 3. Offset piping is too small in size 1. Lower ejector in well 2. Replace with plastic pipe where possible, otherwise with new steel pipe Pump pumps water but does not shut off 1. Pressure switch is out of adjustment or contacts are "frozen" 2. Faucets have been left open 3. Ejector or impeller is clogged 4. Water level in well is lower than estimated 5. Wrong voltage 1. Adjust or replace pressure switch t. Standard pressure tank is waterlogged and has no air cushion 2. Pipes leak 3. Faucets or valves are open 4. Foot valve leaks 5. Pressure switch is out of adjustment 6. Air charge too low in Captive-Air e tank 1. Drain tank to air volume control tapping. Check air volume control for defects. Check for air leaks at any connection. 2. Check connections 3. Close faucets or valves 4. Replace foot valve 5. Adjust or replace pressure switch 1. 2. 3. 4. 1. 2. 3. 4. Pump cycles too frequently Air spurts from faucets Pump is picking up prime Leak in suction side of pump Well is gaseous intermittent overpumping of well 3. Use larger offset piping 2. Close faucets 3. Clean ejector or impeller 4. Check possibility of using a deep well jet pump 5. Make sure motor voltage exactly matches power supply voltage. 6, ]5 Disconnect electrical power and open faucets until all pressure is relieved. Using automobile tire pressure gauge, check air pressure in tank at the valve stem located at top of tank. If less than the pressure switch cut-in setting, pump air into tank from outside source until the air pressure is the same as cut-in setting of switch. Check air valve for leaks, using soapy solution, and replace core if necessary. As soon as pump picks up prime, all air will be ejected Check suction piping Change installation, see Maintenance Lower foot valve if possible, otherwise restrict discharge side of pump REPAIR PARTS MultioStage Jet: Pump ModeR 2 390.253250 3 14B 14 -14C / 17 t _--18 1281 0994 2080 1095 16 REPA| R PARTS Repair Parts List - Multi=Stage Jet Key No. 2 3 4 5 6 7 8 9 10 11 12 13 14 14A 14B 14C 15 16 17 18" Model Number 390.253250 1 HP 115/230V/60Hz J218-600C L43-5C U36-112ZP U217-1228 U37-672P J212-24A L2-16 U30-75ZP U65-15SS U109-99 J24-11 J105-76P J43-23 J101-26 J20-11 J23-10 J23-11 U36-175D J101-33 U78-57CT U30-82ZP F642-9502 Part Description Motor Connector Locknut-1/2" Pressure Switch Switch Tube - 14-1/2" Pressure Regulator Assembly Adapter Capscrew - 3/8"-16x1-1/4" Lg. (2 Req.) Shaft Key (2 Req.) Seal - Shaft Spring Holder Impeller (2 Req.) Spacer- Impeller Intermediate Volute w/Wear Rings Gasket (2 Req.) Wear Ring (2 Req.) Wear Ring Impeller Nut Base Volute w/Wear Ring Pipe Plug - 1/4" NPT Capscrew - 3/8"-16x4-1/4" Lg. (4 Req.) Owner's Manual Repair Parts List- Pressure Regulator Key No. 1 1A 1B 2 2A 2B 2C 2D 2E 2F 3 4 5 6 7 8 9 10 Part Numbers J212-24A Jl12-14 U111-212T J66-16 J220-16B J42-5 J62-9 J20-16 J43-31 U43-23ZP U36-36ZP U78-107DT U239-3 J24-13 J61-5 J52-9 U30-60ZP U30-69FTZP U36-37ZP * Part Description Pressure Regulator Body w/Seat Barbed Fitting - Elbow Valve Seat Diaphragm Assembly Regulator Guide Stem Diaphragm Spring Follower Lock Washer Nut 1/4-20 Reducer Bushing 1/2xl/8 NPT Pressure Gauge 0-100# Spring Spring Guide Bonnet Capscrew 5/16-18x3/4" Lg. (4 Req.) Adjusting Screw 5/16-18x2" Locknut 5/16-18 17 Standard hardware item; may be purchased locally. ** Not mailable; specify freight or express. o Not illustrated. For repair or service to motors, always give the Motor Model number and any other data found on the motor model plate. This is a repair parts list, not a packing list. Please order by part number = not by key number. To Order Parts, Call Sears Product Service, I =800=366=72 78 REPAIR Sears To Order Parts, PARTS Vertical Casing Adapters and Adapter for MuRti°Stage Call Sears Product Service, 1-800o366o7278 Flanges Jet Pump 3 8 Adapter Flange Casing Adapter Repair Parts List ° Adapter Flange Key No. Model 390.253250 1 2 3* J20-12 J2-17B U30-86PS Part Description Adapter Gasket Adapter- 1-1/4"x1-1-1/4" NPT 1/2-13 x1-1/4" Long Capscrew (2 Req.) * StandardHardwareItem, may be purchasedlocally. Repair Parts List = Casing Adapters Key No. 1 2 3 4 5 6 7 8 9 J216-13 J216-14 2" 3" U30-282ZP J16-19ZZP J21-19 J21-18 J51-1ZZP U30-277ZP J21-17 J 16-20ZZP U36-38ZP U30-282ZP J 16-23ZZ J21-19 J21-18 J51-3ZZ U30-277ZP J21-21 J16-24ZZP U36-38ZP Part Description 3/8-16x5" Long Machine Bolt (2 Req.) Upper Flange Seal Ring - Drive Pipe Seal Ring - Suction Pipe Casing Adapter Body 3/8-16x2-1/2" Hex Hd, Bolt (3 Req.) Seal Ring - Lower Lower Flange 3/8" Hex Nut (3 Req,) 18 REPAIR PARTS Jet PacEages 4" Double 2" and 3" Single Pipe Jets Pipe Jets Suction Pipe: 1-1/4"'_ Drive Pipe: 1" /Well Seal Adapt/_er --Steel Nipple _oupling 2 Well <--Casing _Adapter 12_ _Drop Pipe 1" PipeAdapter --9 _---- 3 10- 132o 1094 5 Repair Parts List = Jet Packages 4 13601094 Key No. 1359 1094 1 1 2 3 4 5 6 8 9 10 11 12 e 29670 2" Single Pipe Jets J32P-24 J32P-18 J34P-42 J40-24 J57-1 J43-14P P122-10B J66-13 Ul1-1 29902 3" Single Pipe Jets J32P-24 J32P-18 J34P-42 J40-25 J57-3 J43-16 J43-20C J161-3 J66-14 J37-4 J37-4 29660 4" Double Pipe Jets J32P-24 J32P-18 J34P-42 N40-92 m N212-12P m L8-1 P U11-104P J216-13 U37-116GP! J216-14 U37-116GP Part Description Venturi Venturi Nozzle Jet Body Packer Leathers (2 Req) Spacer Washer Check Valve Valve Seat Turned Coupling (11 included) 1" NPT Offset Nipple Strainer Plastic Pipe Adapter Casing Adapter 1" x 6" T.O.E. Nipple • Not illustrated. Venturi Selection Chart Max. Depth with Jet Package No. 29670 29902 29660 Pump Model HP 390.253250 1 19 Venturi Installed 2" Single Pipe 3" Single Pipe 4" Double Pipe J32P-24 J32P-18 90' 180' 100' 210' 100' 210' ULTi..STAGE JET U P Forthe repair or replacementpartsyou need Call7 am - 7 pm, 7 days a week t ..SOO-366-PARY (1-800-366-7278) For in-homemajorbrandrepair service Call24 hours a day,7 days a week 1-8OO-4-REPAIR (1-89g-473-7247) The model number of your Multi-Stage Jet Pump will be found on the pump body. When requesting service or ordering parts, always give the following information: ® Product Type ®Model Number For the locationof a SearsRepairServiceCenterin yourarea Call24 hours a day, 7 days a week 1-8OO-488- t 222 Forinformationon purchasinga Sears Maintenance Agreementor to inquire about an existingAgreement call 9 am - 5 pm, Monday-Saturday 1-800-827-6655 o Part Number ® Part Description America's Repair Sears, Roebuck and Co., Hoffman Specialists Estates, mL60179 U.S.A.