VAN DER ENDE Danfoss PAH, Installation Manual

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Van der Ende Groep · Aartsdijkweg 23, 2676 LE, Maasdijk · Telefoon 0174 515050
IBAN NL71 RABO 0340341610 · KvK Den Haag 27230471 · Btw-nummer NL8000.78.378.B01 · info@vanderendegroep.nl · www.vanderendegroep.nl
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7. Failures
Before attempting to resolve any problem, always disconnect the pump from the power supply and
depressurise it.
Problem
Cause Solution
Electric motor does
not work Faulty circuit breaker Check/replace all breakers
Thermal protection activated Reset thermal protection
Cord/plug defective
Check/replace power cord and plug
Pump fails to reach
pressure Not properly vented Open relief valve to let air out, then close
Relief valve is open (if used) Shut relief valve
Inlet pressure too low Water reservoir level too low or empty.
Check low-water float.
Make sure the inlet pressure pump is on.
Check the filter for contamination.
Check the inlet pressure protection.
No fluid flow Control inlet/suction pipe, inlet pressure pump or
reservoir
Collars defect Contact supplier
Overflow valve defect Contact supplier
Pressure fluctuates Contaminated suction filter Clean filter
Porous inlet hose Replace hose
Overflow valve defect Contact supplier
Hoses/couplings incorrectly
installed Check hoses/couplings
Pump “bumpy" Dirty and/or faulty valves Contact supplier
Pump drawing in air Check suction connection for cracks and/or holes
Pump leaks water Loose coupling or bolts Check couplings and bolts
Otherwise, contact supplier
Loose hose or hose clamps Check hoses and hose clamps, tighten or replace
as necessary
Collars leak Contact supplier
Pump leaks oil Defective seals Contact supplier
Table 7 Troubleshooting