 |
Automatic liquid level control switch defective. Manually operate control. Take pump to Authorized Service Center.
|
|
Impeller loose on shaft. Disconnect power, remove pump from sump and observe for freedom of impeller and shaft rotation. Tighten fasteners, replace key. Take pump to Authorized Service Center.
|
|
Water inflow excessive. Observe source and amount of water inrush. . Have larger pump installed or have larger sump basin and pump installed.
|
|
Clogged screen or pump inlet. Examine and observe. Disconnect power and clean screen.
|
|
Air locked or air bound pump. Disconnect power& remove pump. Clean air bleed hole or drill 1/8" or 3/16" air bleed hole between pump discharge and check valve.
|
|
Pipe discharge closed by obstruction or ice. Examine and observe. Clean or snake discharge line.
|
|
Inadequate discharge pipe diameter. Measure discharge pipe and compare with manufacturer's suggested diameter (should be no smaller than pump discharge). Have larger diameter discharge piping installed .
|
|
Defective or inoperative check valve. Check valve flapper. Clean check valve. Replace check valve as required.
|
|
Check valve installed in wrong direction. Observe arrow on check valve indicating direction of flow. Install check valve in opposite direction.
|
|
Float operation obstructed or restrained. Observe and check float or weight freedom. Readjust control floats or weights.
|
|
Floats or weights improperly adjusted. Add water to sump and observe turn-on. Readjust control floats or weights.
|
|
Float rod bent or obstructed by debris. Observe and check float or weight freedom. . Readjust control floats or weights.
|
|
Too high a static and friction head. Measure vertical portion of discharge pipe (over 15 feet is excessive). If discharge pipe length is extremely long, the friction losses may exceed pump capacity. Observe number of pipe fittings and reducing bushings. Remove excessive reducing pipe fittings and elbows, increase discharge pipe or have larger pump installed.
|
|
Motor running backwards. Disconnect power, remove pump from sump and observe for freedom of impeller and shaft rotation. Take pump to Authorized Service Center.
|
|
Improperly sized pump. Observe source and amount of water inrush. Have larger pump installed.
|