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Pump head gasket leaks
Replace – tighten pump head bolts. Apply
sealing compound
Pump head overfilled
Remove excess oil
Noisy
gearing/knocking
Discharge pressure too high
Reduce pressure
Water hammer
Install dampener
Hydraulic bypass valve set too high
Readjust bypass valve
Piping Noisy
Pipe size too small
Increase size of piping
Pipe runs too long
Install dampener in line
Surge chambers flooded
Repair with air or inert gas. If dampener is
installed, replace diaphragm and recharge
No surge chambers used
Install dampener
Motor Overheats
Pump overloaded
Check operating conditions against pump
design
High or low voltage
Check power source
Loose wire
Trace and correct
Diagnosis of Diaphragm Failure
FAILURE OBSERVED
POTENTIAL CAUSES
Puncture, surface wear, or physical damage
Abrasives or solids in the process stream
Foreign object in process or hydraulic system
Extrusion and/or failure to the front (towards the
process side)
Extended time under poor suction conditions, can
included inadequate NPIP, closed valves, clogged
strainers or filters, obstructed piping
Malfunctioning High Performance Valve (HPV)
Extrusion and/or failure to the rear (towards the
hydraulic side)
HPV filter screen clogged
High (excessive) suction pressure
Discharge pressure above maximum limit
Leaking (damaged) discharge check valve
Change in surface characteristics, color
Chemical incompatibility with the process fluid
10.
Technical Service Support
10.1
Authorized Service Centers
Pulsafeeder has several Authorized Service Centers across the United States. Contact your local sales
representative for a service center near your location.
10.2
Local Sales Representative
Your local Pulsafeeder Sales Representative has knowledge of Pulsafeeder Products and can provide
technical service support. To locate the local sales office, in the Service Portal go to Contact Us, or go
to
and open “Find a Rep or Distributor”.
10.3
Factory Service Support
Pulsafeeder trained technicians are available to diagnose your problem and arrange a solution.
Solutions may include purchase of replacement parts or returning the unit to the factory for inspection
and repair. All returns require a Return Authorization Number issued by Pulsafeeder through your local
representative. Pulsafeeder cannot accept any pump, part, or piping accessory that has pumped strong
odorants (such as mercaptan).
