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10.5 Possible symptoms of faults / Causes of faults / Remedy to be
applied - fast operation
Possible symptoms of faults
/ Causes / Remedies Fluid
section part
Defaults
Leakage at the upper fluid
section seals
The upper seals of the fluid
section deteriorate quickly
The pump is stopped
The engine seems to be
working but the pump does
not deliver product
The pump works but irregular
flow
With the pump stopped, the
piston continues to descend
With the pump stopped, the
piston continues to rise
Possible causes
Insufficient tightening of the
packing nut
Damaged or worn seals
Incorrect selection of the
material of the joints
Absence of lubricant in the
cup (drying of the pumped
product on the piston rod)
Product compatibility / seals
The product is cured, dried in
the pump
Breakage of part (s) in the
pump
Internal parts of the motor
failing
Faulty hitch
Check valve stuck on its seat,
incorrectly mounted or worn
Air intake in the suction
circuit
Lower valve worn or incorrectly
mounted
Unsealed plug or drain valve
Top seals or top valve worn or
incorrectly mounted
Unsealed plug or drain valve
Use of equipment
Remedies
Tighten the packing nut.
Replace them.
Check compatibility.
Clean, replace parts if necessary.
When stopping for a long time, stop
the pump with the piston in the down
position.
Check.
Clean the fluid section, change the
parts if necessary.
Disassemble, check, replace.
Check the operation of the motor.
Check the hitch.
Check the assembly, the condition of
the parts, the tightening of the
elements and the joints.
Check and replace parts.
Check and replace parts.
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