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

Page: 53 / 412

en - Original instructions
53
Auto-test activated by clock time
The Auto-test function involves the following set-
tings and sequences:
1. Enabling the function (c24=1)
2. Setting the day, hour, minutes of the test (h26,
h27, h28).
3. Setting the programmable digital input D IN
PROGR (c38=1)
4. Setting the relay of the 6CP Q-SMART MOD-
ULE, c40=9, Command for Auto-test.
5. Setting the relay of the 6CP Q-SMART MOD-
ULE, c40=10, Auto-test faulty.
6. At the scheduled time, switching ON Pump P1
after the solenoid valve is opened.
7. Stopping pump P1 after the set time (h29).
8. Waiting for a minute
9. Switching ON pump P2.
10. Stopping pump P2 after the set time (h29).
The Auto-test is interrupted in the following condi-
tions:
•
The membrane pressure switch is activated
(performance of pump is too low). Alarm A24
or A25 is triggered. The dedicated relay of the
6CP Q-SMART MODULE will be activated.
The buzzer of the Q-SMART control panel is
also activated and the set resumes working in
automatic mode. Press button (4), figure 1 , to
silence the buzzer.
•
If the pressure or level in the system changes,
the set resumes working in automatic mode.
The Auto-test is postponed.
8.2
LOAD LOSS COMPENSATION (cr14)
Sometimes there is a pressure drop in the system
due to losses in the pipes which increase when the
demand for water increases.
To compensate for loss of load, it is possible to
enable a control that supplies pressure proportion-
al to the load. A direct measurement of the flow is
not taken, but it is assumed that it is proportional to
the number of pumps running.
When each duty pump after the first is started, the
UPPER and LOWER thresholds are increased by
the value indicated by parameter r14. The jockey
pump is excluded.
9 ALARMS
BOOSTER APPLICATION (parameter bS is se-
lected, section 5.4.3 )
List of alarms
N° Description Reset
A01 Fuse F1 pump 1 burned. Auto
Troubleshooting:
Fuse 1 for pump 1 is burned.
Pump 1 affected by the fault is excluded from op-
eration. When the fault is resolved, the pump is
reactivated automatically. Intervention of the fuse
automatically enables the other pump if there is
demand condition.
Causes/solutions:
•
The motor of pump 1 is damaged and must be
replaced.
•
The power cable of the motor is faulty or
worn: replace the cable.
•
The capacitor of the motor for pump 1 is dam-
aged and must be replaced.
N°
Description Reset
A02 Fuse F2 pump 2 burned Auto
Troubleshooting:
Fuse 2 for pump 1 is burned.
Pump 2 affected by the fault is excluded from op-
eration. When the fault is resolved, the pump is
reactivated automatically. Intervention of the fuse
automatically enables the other pump if there is
demand condition.
Causes/solutions:
•
The motor of pump 2 is damaged and must be
replaced.
•
The power cable of the motor is faulty or
worn: replace the cable.
•
The capacitor of the motor for pump 2 is dam-
aged and must be replaced.
N°
Description Reset
A05 The sensor is faulty. The
alarm is not managed in man-
ual mode. Auto
Troubleshooting:
Signal below the minimum value of 3.8 mA. In the
case of an alarm, all the pumps are stopped. The
alarm will appear if the signal is below 3.8mA and
it is managed only if the sensor is used (c03=2).
The alarm is excluded in manual mode.
Causes/solutions:
•
Check that the sensor and connector are con-
nected.
•
Open the cover and check that the power cord
of the sensor is connected and secured to the
terminals. Refer to figures 6 , 7 and 9 .
•
Check if the cable of the sensor is connected
correctly. Refer to figures 6 , 7 and 9 .
•
The power cable of the sensor has deteriorat-
ed: replace the cable.
•
The plastic connector has deteriorated: re-
place the connector.
•
Replace the faulty sensor.
N°
Description Reset
A24 Auto-test pump 1 failed Auto
Troubleshooting: