Use of the product
582138110-SH0207-indA-EN.docx
27/10/2020
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9.5
Diagnostic help / Troubleshooting guide
Possible symptoms of faults / Causes of faults / Remedy to be applied
Defaults
Possible causes
Remedies
Leakage at the cup seals
Insufficient tightening of the
packing nut
Tighten the cup.
Incorrect assembly of seals
Check the assembly.
Damaged or worn seals
Replace them.
Incorrect selection of the
material of the joints
Check compatibility.
The cup seals get rapidly
damaged
No lubricant in the cup
(pumped product drying on
the piston rod).
Clean, replace parts if necessary.
When stopping for a long time, stop
the pump with the piston in the low
position.
Product compatibility / seals Check.
The pump is stopped
The fluid is polymerized,
hardened, dried in the pump.
Clean the pump, change the parts if
necessary.
The cup is too tightened.
Loosen.
Broken part(s) in the pump.
Remove, check, replace.
The motor seems to operate
but the pump does not
deliver product
Internal parts of the motor
failing
Check the operating of the motor.
Defective coupling.
Check coupling.
The pump operates but
irregular flow
Valve clogged on the seat,
incorrectly mounted or worn.
Check mounting, state of the parts,
tightening of parts and seals.
Air inlet in the suction circuit.
At stop, pump piston
continues to move on going
down
Valve worn or incorrectly
mounted
Check and replace parts.
Plug or drain valve not
tightened
At stop, pump piston
continues to move on going
up
Head piston seals or upper
valve worn or incorrectly
mounted.
Check and replace parts.
Plug or drain valve not
tightened
