Pulsafeeder Pulsa Series 200-680C - Manual (Page 14)

14
Trouble Shooting Chart
Difficulty Probable Cause Remedy
Pump Does Not Start 1. Coupling disconnected Connect and align
2. Faulty power source Check power source
3. Blown fuse, circuit breaker Replace -- Locate overload
4. Broken wire Locate and repair
5. Wired improperly Check diagram
No Delivery 1. Motor not running Check power source. Check wiring diagram
2. Supply tank empty Fill with liquid
3. Lines clogged Clean and flush
4. Closed line valves Open pipeline valves
5. Ball check valves held open with solids Clean -- inspect
6. Vapor lock, cavitation Increase suction pressure
7. Prime lost Reprime, check for leak
8. Strainer clogged Remove and clean. Replace screen if
necessary
9. Hydraulic system under-primed Refer to "Repriming Hydraulic System"
10. Check valves installed upside down See check valve illustrations
Low Delivery 1. Motor speed too low Check voltages, hertz, wiring, and terminal
connections. Check nameplate vs.
specifications
2. Check valves worn or dirty Clean, replace if damaged
3. Bypass valve opening each stroke Refer to "Hydraulic Bypass Valve"
4. Calibration system error Evaluate and correct
5. Product viscosity too high Lower viscosity by increasing product
temperature.
Increase pump size.
6. Product cavitating Increase suction pressure. Cool product
as necessary
Delivery Gradually
Drops
1. Stroke adjustment creeping Consult factory. Replace worn parts.
2. Check valve leakage Clean, replace if damaged
3. Leak in suction line Locate and correct
4. Fouled bypass or make-up valve Refer to "Operation and Maintenance"
5. Strainer fouled Clean or replace screen
6. Product change Check viscosity
7. Bypass leakage Correct for bypass valve leakage
Delivery Erratic 1. Leak in suction line Locate and correct
2. Product cavitating Increase suction pressure
3. Entrained air or gas in product Consult factory for suggested venting
4. Motor speed erratic Check voltage, hertz
5. Fouled check valves Clean, replace if necessary