Xylem Lowara Q-smart, Installation, Operation & Maintenance Manual

Page: 55 / 412

en - Original instructions
55
o
The pumps cease to perform: the impel-
ler is broken.
o
Wrong selection of pump: change the
pump.
•
The motor doesn’t run:
o
It is damaged and must be replaced.
Contact the technical assistance service.
o
The thermal protector inside the motor
is faulty or broken.
o
The capacitor is broken.
N°
Description Reset
A39 External fault alarm
Configuration of the indication
of an external alarm connected
to digital input D IN PROG
(c38=2).
Troubleshooting:
The Alarm is detected by an external device. The
logic is configured by the parameter r38. All pumps
are stopped and they don’t run until the alarm ap-
pears.
The alarm is excluded in manual mode.
Causes/solutions
•
Check the condition of the external device,
replace it if it is damaged.
•
If an alarm appears but the device is in good
condition:
o
The cable is faulty or worn, replace it.
N° Description Reset
A53 No flow of water to the pump
alarm. Auto
Troubleshooting:
No flow of water from probe circuit alarm. The wa-
ter level at the suction of the pump or the pressure
set is below the minimum level. All the pumps are
stopped and protected against dry running. LEDs
(4), (6) on.
The alarm is excluded in manual mode.
N°
Description Reset
A54 Minimum threshold alarm Auto
Troubleshooting:
The pressure of the system does not exceed the
set value of the Minimum threshold parameter
(r54). After the delay time par t54 all the pumps
are stopped and protected against dry running.
The alarm is excluded in manual mode.
Causes/solutions
•
The pump (impeller or diffuser) is damaged.
Contact the technical assistance service.
•
The motor doesn’t run:
o
It is damaged and must be replaced.
Contact the technical assistance ser-
vice.
o
The thermal protector inside the motor
is faulty or broken.
o
The capacitor is broken.
N°
Description Reset
A55 Max threshold alarm Auto
Troubleshooting:
The pressure of the system exceeds the set value
of the Maximum threshold parameter (r55).
After the delay time par t55 all the pumps are
stopped.
The alarm is excluded in manual mode.
Causes/solutions
•
The pressure has exceeded the max pres-
sure: check the set value (r55).
•
Wrong pump selection: replace the pump.
N°
Description Reset
A56 The same alarm is detected
5 times in the last 30 minutes Manual
Troubleshooting:
The system is blocked because the same alarm is
detected 5 times in the last 30 minutes. Use pa-
rameter c57 to reset and restart the system.
Causes/solutions
•
Identify the type of alarm and resolve it
10 SYSTEM SETUP AND
OPERATION
10.1
Parameters to check upon startup
Check the following programming parameters up-
on startup.
1. Define the installation and proper control de-
vices (sensor, digital inputs):
o
1 or 2 pressurisation pumps; refer to
Figures
17 to 38 and 47 to 53 .
o
1 or 2 sewage or filling pumps; refer to
Figures
11 to 16 , 39 to 46 and 54 to 64 .
2. Connect the sensor and/or digital input to the
proper terminals. Refer to figures 7 , 8 and 9 .
3. During switch on: Select the section soft-
ware 5.4.3 and the type of sensor
o
sewage or filling pump = sE software.
o
booster pump = bS software.
o
P= pressure switch
o
S: electronic sensor
o
G: float switch
4. Set the parameters in the parameter menu
according to the type of application and pump:
o
sewage or lifting pump (sE software),
see Tab 2 .
o booster pump (bS software), see Tab 3 .
11 MAINTENANCE
Precaution