Pulsafeeder Pre-Engineered Skid Systems - Manual (Page 22)

Pre-Engineered Skid Systems
Installation, Operation and Maintenance Manual
PES00039, Rev. B Troubleshooting Page 22
Troubleshooting Guide
Problem
Possible Cause Remedy
Pump doesn’t deliver product Air entering suction line Check fittings for tightness
Check integrity of tubing
Check level in suction source – must
be above foot valve at inlet
Air trapped in suction line Re-configure suction line to eliminate
air pocket(s)
Suction line kinked or clogged Inspect, replace tubing
Chemical source empty Refill, re-prime pump
Pump not primed, air/gas in system Re-prime pump
Air/gas bubbles forming in chemical Reduce suction lift or change to
flooded suction
Consider chemical storage temperature
Strainer clogged Check strainer, clean
Pressure Relief Valve open Check Pressure Relief Valve integrity
Check Pressure Relief Valve setting
Pump problem(s) May be:
• Diaphragm wear, rupture
• Check valves worn or clogged
• Low pump flow setting
• Voltage/electrical difficulty
Refer to pump instructions.
Piping Vibration/chatter Pulsation Dampener malfunction Check Pulsation Dampener integrity
Check Dampener air pressure
Injection rate too high, too low Pump output setting incorrect Perform flow calibration
Chemical concentration too high, low Adjust chemical source strength
Siphoning into well or low pressure
point Add Back Pressure Valve at injection
point
Injector clogged, scaled, restricted Check injector for solids or corrosion
Clean as necessary or replace
Injection rate varies Back Pressure Valve Check Back Pressure Valve integrity
Check Back Pressure Valve setting
Tubing failure Sunlight/UV exposure Change to UV-resistant tubing
Corrosive attack Determine material compatibility,
change as necessary
Leaky fittings Loose fittings Tighten fittings – plastic fittings should
be hand-tight only
Corrosive attack Determine material compatibility,
change as necessary
If problem(s) persist, call your Pulsafeeder representative. We’re here to help.