Faults, Causes And Remedies; Spare Parts - Wilo VeroLine-IPL Notice De Montage Et De Mise En Service

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10

Faults, causes and remedies

Fault
Pump does not start
or stops working
Pump runs at reduced
output
Pump making noises
11

Spare parts

38
Have faults remedied by qualified personnel only! Observe the
safety instructions in chapter 9 "Maintenance" on page 35.
• If the malfunction cannot be rectified, consult a specialist techni-
cian or the nearest customer service or representative office.
Cause
Pump blocked
Cable terminal loose
Fuses defective
Motor damaged
Motor protection switch has
triggered
Motor protection switch set
incorrectly
Motor protection switch
affected by excessive ambient
temperature
PTC thermistor tripping unit
has triggered
Incorrect direction of rotation
Stop valve on the pressure side
throttled
Speed too slow
Air in the suction line
Insufficient supply pressure
Motor has bearing damage
Impeller grinding
Spare parts may be ordered via a local specialist and/or Wilo after-
sales service.
To avoid queries and incorrect orders, all data of the rating plate
should be submitted for each order.
CAUTION! Risk of material damage!
Trouble-free pump operation can only be guaranteed when origi-
nal spare parts are used.
• Only use original Wilo spare parts.
• Each component is identified in the table below.
Information to be provided when ordering spare parts:
• Spare part number
• Name/description of the spare part
• All data on the pump and motor rating plate
Remedy
Disconnect motor from power supply, remove cause of
blockage; if motor blocked, overhaul/replace motor/motor
impeller unit
Tighten all terminal screws
Check fuses; replace faulty fuses
Have the motor checked by Wilo customer service or a spe-
cialised service centre and serviced if necessary
Throttle the pump to the rated volume flow on the pressure
side
Set the motor protection switch to the correct rated current
as shown on the rating plate.
Move the motor protection switch or protect it using thermal
insulation
Check the motor and fan cover for contaminants and clean if
necessary, check ambient temperature and ensure an ambi-
ent temperature of ≤ 40°C by forced venting if necessary
Check direction of rotation, change if necessary
Slowly open the stop valve
Remedy incorrect terminal bridging (Y instead of Δ)
Seal leaks at the flanges; vent
Increase supply pressure, observe minimum pressure at the
suction port, check slide valve and filter on the suction side
and clean if need be
Have the pump checked by Wilo after-sales service or a spe-
cialised service centre and repaired if necessary
Check faces and centrings and between lanterns and motor
and lantern and pump housing, clean if necessary.
WILO SE 11/2017