Xylem Lowara Q-smart - Page 52

en - Original instructions
52
alarm for
minimum
pressure
threshold
(only for
system with
sensor)
bled
1= Enabled
r54
Setting the
minimum
pressure
threshold
0 to Full
scale sen-
sor
(0= disa-
bled)
Vari-
ous
0
t54
Delay time
until activa-
tion of min-
imum pres-
sure alarm
threshold
(c54=1)
0 to 200
sec
20
c55
Enable
alarm for
maximum
pressure
threshold
alarm (only
for system
with sensor)
0= Disa-
bled
1= Enabled
-
0
r55
Setting the
maximum
pressure
threshold
alarm. All
pumps are
stopped in
case of
alarm
0 to Full
scale sen-
sor
(0= disa-
bled)
Vari-
ous
0
t55
Delay time
until activa-
tion of max-
imum pres-
sure alarm
threshold
(c55=1)
0 to 200
sec
0
SETTING SYSTEM ALARM BLOCK
c56
Enables
system
block if the
same alarm
occurs five
times in 30
min. A man-
ual reset is
necessary to
restart the
system.
0= Disa-
bled
1= Enabled
-
0
c57
Reset the
alarm log
0= No
1= Yes
-
0
(1) D IN PROG=1 is set
(Minimum pressure out of operation range is detected)
If the pressure switch is activated in automatic mode
and not during Auto-test, the following happens:
- If the pumps are running they will not be
stopped and alarm A38 will be shown.
- If the pumps are not running they will not start
and alarm A38 will be shown. If there is a pres-
sure drop, however, they will be switched on
and alarm A38 continues to be shown.
If the minimum pressure is activated during the
Auto-test, see section
8.1.
8 SPECIAL FUNCTION
BOOSTER APPLICATION (parameter bS is se-
lected, see section
5.4.3)
8.1 Auto-test RUN
Using the Auto-test function, the pumps can be
switched ON when they have been OFF for a long
time.
The pumps are switched ON by the clock or by an
external digital contact (c24).
NOTICE:
The following components have to be used:
• Solenoid valve: it is required to drain the water
during the test.
• Membrane pressure switch or equivalent de-
vice. It is used to check the performance of the
pump to prevent its value from dropping too
low. It is connected to D IN PROGR of the Q-
SMART control panel (refer to figures
7 and 9)
• Q-SMART-6FVC MODULE, electronic card
relay voltage-free contacts (refer to figures
7
and 9)
How to start the auto-test: activation by clock
(c24=1)
If the pumps are running, the auto-test is put on
hold and this text is shown on the display in blink-
ing mode:
When the pumps are in standby, the auto-test
starts and the test in progress and the pump in use
are shown on the display in blinking mode:
How to stop the auto-test
The auto-test can be stopped at any time by press-
ing the OK button.
What does the Auto-test Run do?
tSt
tSt
P1