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250 cap plug withgrounding pin, rated 15 Amp 125 V – NEMA 5-15P50 ft. length (WSP53AA, WSP73AA) 20 ft. length (WSP33K1AA) Automatic Float Switch Mechanical Float Complete Pump UL listed *WSP33K1AA – Shaft Seal is a single mechanical seal (lower side) and 1 lip seal (upper side). Mechanical Seal material: Carbon/Ceramic/FPM Troubleshooting Checklist Troubleshooting Checklist Possible Causes Pump does • Line circuit breaker is off, or fuse is blown or loose. not run or • Water level in the sump has not reached turn-on level as hums indicated in the installation drawing. • Pump cord is not making contact in the receptacle. • Float is stuck. It should operate freely in the basin. • Debris may be stuck in the impeller. • If all of the above are OK, then the motor winding may be openor the capacitor may be defective. Pump runs but • Check valve is installed backwards. Arrow on the valve should does not point in the direction of flow. deliver water • 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 the up position. Be sure the float operates freely in the basin. • Defective float switch. Pump runs but • Pump is air-locked. Start and stop several times by plugging and delivers only a small amount of water unplugging the cord. • Check for a clogged vent hole in the pump case. • Vertical pumping distance is too high. Reduce the distance or resize the pump. • Inlet holes in pump base are clogged. Remove pump and clean the openings. • Impeller or volute openings are fully or partially clogged. Remove the pump and clean. Fuse blows or • Pump impeller is partially clogged, causing motor to run slow circuit breaker trips when pump starts 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. • Water lead inside the pump motor. Problem Problem Motor runs for a short time, then stops • Inlet holes in pump base are clogged. Remove pump and clean the openings. • Pump impeller is partially clogged, causing motor to run slow and overload. Remove pump and clean. • Motor my be overheated due to water level being too low (pump not submerged). • 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 the motor housing, unscrew the impeller, or otherwise remove the impeller seal. If the pump does not operate properly, follow the steps shown under “Troubleshooting Checklist” on page 14. For any work on the pump or switch, always unplug the power cord(s). Do not just turn off the circuit breaker or unscrew the fuse. Cleaning the Float If the pump becomes inoperative because of trash accumulation on the float, remove the pump from the sump and clean the float switch. Wipe all water and dirt from the pump and float switch. Be sure the float switch operates freely after cleaning. Cleaning Impeller and Volute Case Remove the screws that hold the lower base to the housing. CAUTION: Do not remove the motor housing or unscrew the impeller. Use a screwdriver to pry the base from the housing. Pry in several places. Be sure impeller turns freely after cleaning. Clean out holes in the pump base and wash thoroughly before replacing. 16 Sectional View – WSP33K1AA Automatic Type Output 1/3 HP (Single Phase) Ref No. Ref No. Material Standard Quantity 1 Suction cover EN 1.4301 (AISI 304) — 1 4 Casing cover EN 1.4301 (AISI 304) — 1 6 Shaft with rotor EN 1.4305 (AISI 303) — 1 7 Impeller PPE+PS-HI-GF20 — 1 11 Mechanical seal — — 1 12 Motor frame with stator EN 1.4301 (AISI 304) — 1 13 Motor cover PP-GF30 — 1 19 Lower ball bearing — — 1 20 Upper ball bearing — — 1 26 O-ring NBR — 1 27 O-ring NBR — 1 28 O-ring NBR — 1 29 O-ring NBR — 1 30 Washer EN 1.4301 (AISI 304) — 1 33 Seeger ring Carbon steel TC80 UNI 7435 1 34 Impeller nut A2-70 UNI 7323 UNI 5721 1 37 Outer casing EN 1.4301 (AISI 304) — 1 44 Strainer EN 1.4301 (AISI 304) — 1 45 Upper bearing housing EN 1706 AC-4600D — 1 46 Lower bearing housing EN 1706 AC-4600D — 1 52 Terminal insulating base PA6 — 1 54 Power cable PA6 — 1 55 Switch — — 1 91 Washer EN 1.4301 (AISI 304) — 1 92 Lip seal NBR — 1 94 Shaft sleeve EN 1.4305 (AISI 303) ceramic coated — 1 95 O-ring NBR — 1 96 O-ring NBR — 1 100 O-ring NBR — 1 123 Handle PP — 1 200 Screw A2-70 UNI 7323 UNI 7687 1 201 Screw A2-70 UNI 7323 UNI 7687 1 204 Screw A2-70 UNI 7323 UNI 7687 1 208 Screw A2-70 UNI 7323 UNI 7687 1 260 Oil Esso Marcal 152 ...
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