Assessments - 3, GPA: 4.3
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Constant repetition of this action will shorten pump service life. Do not start the pump again in such a situation until after the motor has completely cooled. Technical Specifications Model WSP33AA WSP53AA WSP73AA Performance: ISO 2548 Standard Optional Discharge Size 1/3 HP – 11/4 inch 1/2 HP and 3/4 HP – 11/2 inch Range of Performance Capacity: up to 74 GPM Head: up to 54 feet Limitation Maximum Water Temperature 122°F/50°C Solids 3/8'' Spherical (2% by concentration) Speed 3600 RPM Materials Casing 304L Stainless Steel Impeller 304L Stainless Steel* Shaft 303 Stainless Steel Motor Frame 304L Stainless Steel Fasteners 304L Stainless Steel Shaft Seal (Double)** Material – Upper Side Material – Lower Side Impeller Type Bearing Motor Single Phase Motor Protection Power Cord Automatic Float Switch NBR Fitted Carbon/Ceramic WSP53AA and WSP73AA Viton Fitted Silicon Carbide/Silicon Carbide WSP53AA and WSP73AA Semi-Open Sealed Ball Bearing Air-filled, Insulation Class F, 2 Pole, Rated Continuous Duty– Permanent Split Capacitor 115 Volt Built-in Motor Protection with Auto Reset UL/CSA SJTow-A with ECS No. 250 cap plug with grounding pin – 50 Ft. Length Rated 15 Amp 125V – NEMA 5-15P Mechanical Float * WSP33AA - Impeller/Diffuser is Thermo Plastic-Noryl GFN2 ** WSP33AA – 1/3 HP Shaft Seal is Non-Mechanical Double Oil Seal (Rubber) Troubleshooting Checklist PROBLEM POSSIBLE CAUSES Pump does not run or hums. • Line circuit breaker is off, or fuse is blown or loose. • Water level in sump has not reached turn-on level as indicated in installation drawing. • Pump cord is not making contact in receptacle. • Float is stuck. It should operate freely in basin. • If all of the above are OK, then the motor winding may be open. Pump runs but does not • Check valve is installed backwards. Arrow on valve should point in deliver water. direction of flow. • Discharge shut-off valve (if used) may be closed. • Pump is air-locked. Start and stop several times by plugging and unplugging cord. Check for clogged vent hole in pump case. • Impeller or volute openings are fully or partially clogged. Remove pump and clean. • Inlet holes in pump base are clogged. Remove pump and clean the openings. • Vertical pumping distance is too high. Reduce distance or resize pump. Pump runs and pumps out sump, but does not stop. • Float is stuck in up position. Be sure float operates freely in basin. • Defective float switch. Pump runs but delivers • Pump is air-locked. Start and stop several times by plugging and only a small unplugging cord. amount of water. Check for clogged vent hole in pump case. • Vertical pumping distance is too high. Reduce distance or resize pump. • Inlet holes in pump base are clogged. Remove pump and clean the openings. • Impeller or volute openings is fully or partially clogged. Remove pump and clean. Fuse blows or circuit breaker trips when pump starts. • Pump impeller is partially clogged, causing motor to run slow and overload. Remove pump and clean. • Motor stator may be defective. • Fuse size or circuit breaker may be too small. Must be 15 amps. • Impeller or volute openings are fully or partially clogged. Remove pump and clean. Motor runs for a short • Inlet holes in pump base are clogged. Remove pump and clean time, then stops. the openings. • Pump impeller is partially clogged, causing motor to run slow and overload. Remove pump and clean. • Motor stator may be defective. • Impeller or volute openings are fully or partially clogged. Remove pump and clean. Maintenance and Service WARNING: Pump warranty becomes void if you remove motor housing, unscrew impeller, or otherwise remove impeller seal. If pump does not operate properly, follow the steps shown under Troubleshooting. For any work on pump or switch,always unplug power cord(s).Do not just turn off circuit breaker or unscrew fuse. Cleaning float If pump becomes inoperative because of trash accumulation on the float, remove pump from sump and clean float switch. Wipe all water and dirt from the pump and float switch. Be sure float switch operates freely after cleaning. Cleaning impeller and volute case Remove screws that hold lower base to housing. CAUTION: Do not remove motor housing or unscrew impeller. Use screwdriver to pry base from housing. Pry in several places. Be sure impeller turns freely after cleaning. Clean out holes in the pump base and wash thoroughly before replacing. A Automatic Type Output 1/3 HP (Single Phase) * Recommended spare parts Ref. No. PartName Material ASTM, AISI Code No. for 1 Unit 007 Outer Casing 304 Stainless AISI 304 1 012 Suction Cover Noryl G.F. 3 1 021 Impeller Noryl G.F. 3 1 041 Sleeve 304 Stainless/Ceramic 1 048 Impeller Nut 304 Stainless AISI 304 1 *114 Oil Seal NBR 1 set 200 Lifting Hanger 304 Stainless AISI 304 1 244 Strainer 304 Stainless AISI 304 1 262 Float Switch — 1 801 Rotor — 1 802 Stator — 1 809 Capacitor — 1 811 Submersible Cable — 1 814 Motor Frame 304 Stainless AISI 304 1 816 Bracket Alminume 1 817 Bracket Nor...
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