Xylem LOWARA ESHS ATEX, Инструкция по установке, эксплуатации и обслуживанию

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en – Original instructions
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7 Troubleshooting
7.1 Troubleshooting for users
The main switch is on,
but the pump unit does not start.
Cause Solution
The thermal protector
incorporated in the
pump (if any) has
tripped. Wait until the pump has
cooled down. The thermal
protector will automatically
reset.
The protective device
against dry running
has tripped. Check the liquid level in
the tank, or the mains
pressure.
The pump unit starts, but the thermal protector trips
a varying time after
Cause Solution
There are foreign
objects (solids or
fibrous substances)
inside the pump which
have jammed the
impeller. Contact Xylem or the
Authorised Distributor.
The pump is
overloaded because it
is pumping liquid that is
too dense and viscous. Check the actual power
requirements based on
the characteristics of
the pumped liquid and
then contact Xylem or
the Authorised
Distributor.
The pump runs but delivers too little or no liquid.
Cause Solution
The pump is
clogged. Contact Xylem or the
Authorised Distributor.
The troubleshooting instructions in the tables below
are for installers only.
7.2 The main switch is on, but the
pump unit does not start
Cause Solution
There is no power
supply.
•
Restore the power
supply.
•
Make sure all electrical
connections to the
power supply are
intact.
The protective
device against dry
running has
tripped. Check:
•
liquid level in the tank,
or the mains pressure.
•
protective device and
its connecting cables.
7.3 The pump unit starts, but the
thermal protector trips or the
fuses blow immediately after
Cause Solution
The power supply cable
is damaged. Check the cable and
replace as necessary.
The thermal protection
or fuses are not suited
for the motor current. Check the components
and replace as
necessary.
The electric motor is
short circuit. Check the components
and replace as
necessary.
The motor overloads. Check the operating
conditions of the pump
and reset the protection.
7.4 The pump unit starts, but the
thermal protector trips or the
fuses blow a short time after
Cause Solution
The electrical panel is
situated in an
excessively heated
area or is exposed to
direct sunlight.
Protect the electrical
panel from heat source
and direct sunlight.
The power supply
voltage is not within the
working limits of the
motor. Check the operating
conditions of the motor.
A power phase is
missing. Check the
•
Power supply
•
Electrical
connection
7.5 The pump unit starts, but the
thermal protector trips a varying
time after
Cause Solution
There are foreign
objects (solids or
fibrous substances)
inside the pump which
have jammed the
impeller. Contact Xylem or the
Authorised Distributor.
The pumps delivery
rate is higher than the
limits specified on the
data plate. Partially close the on-off
valve down stream until
the delivery rate is equal
or less than the limits
specified on the data
plate.
The pump is
overloaded because it
is pumping liquid that
is too dense and
viscous. Check the actual power
requirements based on
the characteristics of the
pumped liquid and replace
the motor accordingly.
The motor bearings
are worn. Contact Xylem or the
Authorised Distributor.