Product Manual

Operating Instructions and Parts Manual 2D AND 3D Series

Troubleshooting Chart

Pump will not prime or retain 1. Air leak in suction line 1. Repair or replace

prime after operating 2. Defective flapper valves 2. Replace

3. Clogged foot valve or strainer 3. Clean or replace

4. No liquid in suction line 4. Fill suction line & pump with liquid

5. Material jammed in pump well 5. Clean (See Maintenance)

Flow rate is slow 1. Incorrect driver speed 1. Increase speed (see Specifications)

2. Piping is fouled or damaged 2. Clean or replace

3. Clogged pump 3. Clean

4. Discharge line restricted or undersized 4. Flush out piping or replace

5. Collapsible disc hose 5. Replace with rigid or non-collapsible hose

6. Too many bends 6. Straighten hose

7. Lines too long 7. Shorten lines

Pump runs but no fluid 1. Faulty suction piping 1. Replace

2. Pump located too far from fluid source 2. Place pump closer to source

3. Gate valve closed 3. Open gate valve

4. Clogged strainer 4. Clean or replace

5. Discharge height too great 5. Lower discharge height

Pump starts and stops pumping 1. Leak in suction line 1. Repair

2. Leak in foot valve 2. Repair or replace

3. Diaphragm has a crack or hole 3. Replace

4. Defective or clogged flapper valves 4. Clean or replace

Excessive noise while pump 1. Pump not secured to firm foundation 1. Secure properly

in operation 2. Restricted suction line 2. Clean or correct

Pump stalls repeatedly or 1. Discharge height over 25 feet of head 1. Lower height (see Specifications)

stops for no apparent reason 2. Material jammed in pump well 2. Clean out pump well (See Operation &

Maintenance section

Symptom Possible Cause(s) Corrective Action