NOTICE: This pump has an anti-airlock hole in the base of the volute.  This hole allows pump to start priming within 1 5 seconds in as little as 1/2" of water.  Leakage from anti-airlock hole is normal. Maintenance WARNING Make certain that the pump is unplugged before attempting to service. NOTICE: Disassembly of the pump will void the warranty.  It might also cause internal leakage and damage to the unit. If repairs are required return the pump to the dealer from whom it was purchased. 1. The motor is sealed in oil.  No additional lubrication is necessary. 2. Inlet screen should be kept clean and free of all foreign objects. 3. When  used  in  automatic  service,  such  as  a  sump  pit,  pump  should  be  checked  for  proper  operation  weekly  or monthly by filling the sump pit with water and watching pump performance.  ON/OFF levels, etc.  If performance level has changed since the pump was new, the pump should be removed from the pit and examined. Troubleshooting Chart SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION Pump won't start or run 1. Blown fuse 1. If blown, replace with fuse of proper size. 2. Low line voltage 2. If voltage under recommended minimum, check size of wiring from main switch on property.  If OK, contact power company. 3. Pump may be filled with mud 3. Back flush with water in pump discharge or debris or by dipping pump up and down in clean water. 4. Water level too low (if automatic 4. The water level must rise almost to the switch is used) top of the pump to turn unit on. 5. Seal worn out, motor burned 5. Caused by pumping dirty water. Replace out pump. Pump  starts  and  stops too often 1. Low line voltage 1. If voltage under recommended minimum, check size of wiring from main switch on property. If OK, contact power company 2. Clogged impeller 2. Back flush with water in pump discharge or by dipping pump up and down in clean water. 3. Very low head or lift 3. Increase head or lift. Pump operates, but 1. Low line voltage 1. If voltage under recommended minimum, delivers little or no check size of wiring from main switch on water property. If OK, contact power company. 2. Fouled sediment screen 2. Clean. 3. Pump airbound 3. Turn off pump for few seconds and then restart. 5