Problems, Causes And Solutions - Wilo BAC 40/129 Serie Instrucciones De Instalación Y Funcionamiento

ENGLISH
8 Problems, Causes and Solution
Problems
Pump runs but does a) Pump blocked by foreign body
not pump b) Pipework blocked (inlet side)
c) Inadequate hydraulic seal/ injection
d) Injection pressure too low, causes cavi-
e) Wrong motor direction of rotation
f) Inadequate supply voltage to motor
Pump vibrates a) pump not properly fixed to the base
b) foreign body in the pump
c) Pumpe runs sluggishly: bearing
d) Pump connected to electrical supply
Pump overheats a) Adjacent supply voltage too low
b) foreign body blocking the pump
c) Ambient temperature > 40°C
Pump does not run a) no power
b) b)impeller blocked
c) Motor protection device triggered
Inadequate flow rate a) Motor running with insufficient speed
b) Motor defective
c) Inadequate hydraulic seal/ injection
d) Wrong motor direction of rotation
e) Internal components worn
motor cut-out a) Setting of motor protecting switch too
activates
b) Supply voltage too low
c) Phase interruption at connecting cable
d) Defective motor protecting switch
e) Motor defective
f) Flow rate too high because of too low
Pump does not pump a) Diameter of inlet pipe too narrow
evenly
b) Filter and inlet pipe blocked
If the problem cannot be rectified, contact your sanitary and heating specialist or Wilo Customer Service.
10
Causes
pressure
tation
damaged
incorrectly
(caused by foreign body, power supply
too low)
pressure
low
system resistance
Solutions
a) Check and clean pump
b) Check and clean line
c) Fill reservoir, bleed pump
d) Check inlet pipe for size and constrictions
e) Swap any two phases in the switching device or terminal
box
f) Check voltage and cable cross-sectional areas of the
electrical connection
a) Check and tighten fastening screws on base
b) remove foreign body
c) have pump repaired by customer services
d) Check and correct pump's electrical connection
a) Check voltage of motor connection, permissible mains
voltage tolerance ± 10%
b) remove foreign body
c) Pump/motor designed for an ambient temperature of
max. +40°C, if nec. provide cooling
a) check power supply, fuses and cable
b) clean pump
c) Check and adjust motor protection device.
a) Clean pump, check power supply.
b) Call customer Service, replace motor
c) Fill reservoir, bleed pump
d) Swap any two phases in the switching device or terminal
box
e) have pump repaired by customer services
a) Check current consumption or set in accordance with
rating plate data
b) Check and correct pump's electrical connection
c) Check connecting cable, if necessary replace cable
d) Replace motor protecting switch
e) Call Custoemr Services, replace motor
f) Reduce pump on outlet side
a) Inlet pipe must at least have the diameter of the pump's
inlet
b) Clean filter and pipe
Subject to technical alterations!