Wilo Yonos GIGA-N 125-5,5, Инструкция по установке и эксплуатации

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Faults, causes and remedies en
Installation and operating instructions Wilo-Yonos GIGA-N 67
1 2 3 4 5 6 Cause Remedy
X
X Sealing gap too large due
to wear – Exchange worn neck ring
X
Incorrect direction of ro-
tation – Change the motor connec-
tion phases
X
Pump sucks air or suction
line is leaky – Replace gasket
– Check suction line
X
Supply line or impeller
clogged – Remove clogging
X
Pump blocked by loose or
jammed parts – Clean pump
X
Air pockets in the piping – Change the pipe layout or in-
stall an air vent valve
X
Speed too low
– with frequency con-
verter operation
– without frequency con-
verter operation
– Increase frequency in the
permissible range
– Check voltage
X Counter pressure of the
pump too low – Readjust the duty point or
adjust the impeller
The viscosity or density of
the fluid is higher than the
design specification – Check the pump dimension-
ing (consult with the manufac-
turer)
X X X X The pump is strained Correct the pump installation
X X X Pump unit poorly aligned – Correct alignment
X Thrust too high – Clean the relief bores in the
impeller
– Check the condition of the
neck rings
X Bearing lubrication not
sufficient Check bearing, exchange bear-
ing
X Coupling distance not
maintained – Correct the coupling distance
X X X – Flow rate too low – Maintain recommended min-
imum flow rate
X – Housing screws not
correctly tightened or
gasket defective – Check tightening torque
– Replace gasket
X Leak in mechanical seal – Replace mechanical seal
X X Impeller imbalance – Rebalance impeller
X Bearing damage – Replace bearing
X Foreign object in pump – Clean pump
X Pump is pumping against
a closed shut-off valve – Open shut-off valve in pres-
sure pipe
Table 25: Causes of error and remedies
12.2 Error codes, display
Classification No. Fault Cause Remedy Error type
HV AC
–
0 No error