IDROBASE Stella - Page 67

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10.2 CAUSES AND SOLUTIONS
In the following troubleshooting we listed many of the problems, causes and solutions that can help you to solve the problems that
you might encounter, also directly by the operator.
HIGH PRESSURE PUMP
PROBLEM CAUSE SOLUTION
The pump operates nor-
mally,
but does not reach
the required pressure.
• Air intake
• Bonded valves
• Faulty control valve
• Nozzle of wrong size or worn
• Piston gaskets worn
• Check the suction circuit and check for any formations of
air
• Check, clean and replace, if necessary
• Check and/or replace if necessary
• Replace
• Check and/or replace
Uneven pressure • Valves worn
• Valves blocked
• The pump sucks up air
• Piston gaskets worn
• Check and/or replace
• Check and/or clean
• Check the suction circuit and check for any formations of
air
• Check and/or replace
Drop in pressure after nor-
mal period
of use
• Nozzle worn
• Valves worn
• Valves blocked
• Control valve housing worn
• Piston gaskets worn
• Replace nozzle
• Check and/or replace
• Check and/or clean
• Check and/or replace
• Check and/or replace
Pump loud • Air present during suction
• Suction circuit not suitable,
or delivery valve springs broken
• Bearings damaged
• High water temperature
• Check the suction circuit
• Check and/or replace if necessary
• Check and/or replace
• Reduce water temperature
Water present in the oil • Oil retainer damaged
• High humidity level in work
environment
• Piston gaskets worn
• Check and replace
• Check and/or replace the oil more frequently
• Check and/or replace
Oil leakage from
under the pump
• Piston gaskets worn
• O-ring seal on piston worn
• Check and/or replace
• Check and/or replace
Oil leakage • Oil retainer damaged • Check and/or replace
10  TROUBLESHOOTING
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