Faults, Causes And Remedies - Wilo Atmos GIGA-I Einbau- Und Betriebsanleitung

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Faults, causes and remedies

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Faults, causes and remedies
Screw connection
Post Size/tensile strength class
Installation information:
1)
Lubricate the thread with Molykote® P37 or comparable.
2)
Tighten the screws uniformly, keep the gap even on both sides.
3)
Rescrew and tighten every screw separately.
Table 5: Screw tightening torques
WARNING
Have faults remedied by qualified personnel only! Observe all safety in-
structions!
If the malfunction cannot be rectified, consult a specialist technician or the nearest
Wilo customer service or representative location.
Faults Causes
Pump blocked.
Incorrectly installed mech-
anical seal.
Cable terminal loose.
Fuse protection defect.
Motor damaged.
Pump does not start or
stops working.
Motor protection switch
has triggered.
Motor protection switch set
incorrectly
Motor protection switch af-
fected by excessive ambi-
ent temperature
PTC thermistor tripping unit
has triggered.
Tightening torque
Nm ± 10 %
Remedies
Electrically isolate the motor.
Remove the cause of the
blocking. Motor blocking:
Overhaul/replace motor/motor
impeller unit.
Remove the mechanical seal;
replace defective parts; install
mechanical seal in accordance
to the instructions.
Check all cable connections.
Check fuses; replace faulty
fuses.
Have the motor checked by the
Wilo customer service or a spe-
cialised service centre and re-
paired if necessary.
Set the pump to the rated
volume flow on the discharge
side (see rating plate).
Set the motor protection
switch to the correct rated cur-
rent (see rating plate).
Move the motor protection
switch or protect it using heat
insulation.
Check the motor and fan cover
for contamination and clean
them if necessary.
Check the ambient temper-
ature and, if necessary, set the
ambient temperature to
≤ 40 °C by forced ventilation.
WILO SE 2022-06