Wilo Atmos TERA-SCH, Инструкция по установке и эксплуатации

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Faults, causes and remedies en
Installation and operating instructions Wilo-Atmos TERA-SCH 43
Error type Description
3
Pump end pressure too high
4
Bearing temperature too high
5
Pump housing leakage
6 Shaft seal leakage
7
Pump does not run smoothly or is loud
8
Pump temperature too high
Table 20: Error types
10.2 Causes and remedies
Error type:
1 2 3 4 5 6 7 8 Cause Remedy
X
Counter pressure too
high – Check system for
contaminants
– Reset the duty point
X
X X Pump and/or piping not
completely filled – Vent pump and fill
suction line
X
X X Inlet pressure too low or
negative suction head
too high – Correct the fluid level
– Minimise resistances
in the suction line
– Clean filter
– Reduce negative suc-
tion head by installing
the pump lower
X
X X Sealing gap too large
due to wear – Exchange worn wear
ring
X
Incorrect direction of
rotation – Change the motor
connection phases
X
Pump sucks air or the
suction line is leaky – Replace gasket
– Check suction line
X
Supply line or impeller
clogged – Remove clog
X
X Pump blocked by loose
or jammed parts – Clean pump
X
Air pockets in the piping – Change the pipe lay-
out or install an air vent
valve
X
Speed too low
– with frequency con-
verter operation
– without frequency
converter operation
– Increase frequency in
the permissible range
– Check voltage
X
X Motor running on
2 phases – Check phases and
fuses
X X Counter pressure of the
pump too low – Readjust the duty
point or adjust the im-
peller
X The viscosity or density
of the fluid is higher
than the design value – Check the pump di-
mensioning (consult
with the manufacturer)
X X X X X The pump is strained Correct the pump in-
stallation
X X Speed too high Lower speed
X X X Pump unit poorly
aligned – Correct alignment