Zoeller 2701 Manual De Instrucciones página 11

Problem
Pump starts and 1. Water is back-flowing into basin from
stops too often.
2. Switch is defective.
3. Check valve not functioning properly
Pump shuts off 1. Excessive water temperature.
and turns on
independently
2. Switch is defective.
of switch (trips
3. Switch is obstructed.
thermal overload
protection.)
4. Discharge pipe is clogged.
5. Low line voltage.
Pump is noisy 1. Worn bearings.
or vibrates
2. Impeller is clogged or damaged.
excessively.
3. Piping attachment to building
Pump will not 1. Switch is defective.
shut off.
2. Switch is obstructed.
3. Discharge pipe is clogged.
4. Water inflow exceeds pump capacity.
Pump operates, 1. Low line voltage.
but delivers little
2. Inlet screen clogged.
or no water.
3. Broken impeller or debris in impeller
4. Check valve stuck closed or installed
5. Shut off valve closed.
Possible Cause
discharge pipe.
or leaking.
structure too rigid or too loose.
.
cavity.
backwards.
1. Install check valve.
2. Replace switch.
3. Be sure check valve is installed and
operating properly. Replace check
valve if necessary .
1. Pump should not be used for water
above 104°F (40°C).
2. Replace switch.
3. Remove obstruction to ensure free
motion of switch.
4. Remove clog in discharge piping.
5. Contact an electrician.
1. Replace pump.
2. Where applicable, remove screen
and volute, clean impeller or replace
impeller.
3. Install rubber coupling (not included) to
isolate pump vibration from discharge
piping.
1. Replace switch.
2. Remove obstruction to ensure free
motion of switch.
3. Remove clog in discharge piping.
4. Re-check sizing calculations to
determine proper pump size.
1. Contact an electrician.
2. Remove debris.
3. Where applicable, remove screen
and volute, clean impeller or replace
impeller.
4. Be sure check valve is installed and
operating properly. Replace check
valve if necessary .
5. Open shut off valve.
11
Corrective Action