Hydromatic SKV40, Installation And Operation Manual And Parts, Page: 6 / 8

TROUBLES-REMEDIES
Sudden Starts. If the power is on to the pump when thermal overload resets, the pump may start without
warning. If you are working on the pump, you may get an electrical shock or the impeller may catch fingers or tools.
Disconnect the power before servicing the pump.
A. Pump fails to operate: 1. Check to be sure that power cord is securely plugged into outlet or securely wired
into controller or switch box.
2. Check to be sure you have electrical power. Be sure that the piggyback plugs are
tight.
3. Check that liquid fluid level is high enough to activate switch or controller.
4. Check to be sure that 1/8" (3 mm) vent hole in discharge pipe is not plugged.
5. Check for blockage in pump inlet, impeller, check valve or discharge pipe.
6. Disconnect the pump from the power source for a minimum of 30 minutes to allow
the motor to cool and to protect yourself from sudden starts. See Warning above.
Check for the cause of overheating. Pump is running dry because the float switch
is caught up on something. Inlet pipe is plugged. Outlet pipe is plugged.
7. Motor windings may be open. Take unit to authorized service center.
B. Pump runs, but fails to 1. Be sure all valves in discharge pipe are fully open.
empty sump:
2. Clean out discharge pipe and check valve.
3. Check for blockage in pump inlet or impeller.
4. Pump not sized properly. A higher capacity pump may be required.
C. Pump will not shut off: 1. Check switch for proper operation and location.
See installation instructions for switch.
2. If pump is completely inoperative or continues to malfunction, consult your
local serviceman.
D. Pump run but fails to deliver 1. Check valve may be installed backwards. Be sure that the arrow on valve points in
water: the direction of flow.
2. Pump may be airlocked. Check vent hole in impeller housing.
E. Pump fuse blows or trips 1. Check fuse size.
circuit breaker: Motor runs for 2. Intake opening clogged. Obstructed impeller. Obstructed volute.
short time and stops: 3. Defective stator. Take unit to authorized service center.
F. Pump runs but delivers small 1. Start and stop pump several times by plugging and unplugging cord.
amount of water: 2. Clear vent hole in impeller cavity.
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