28
MAX limit / MIN limit
Only applicable if:
Relay contact 1 (feedback LED 1) works as switching output for MAX limit
Relay contact 4 (feedback LED 4) works as switching output for MIN limit
LED 1 lights up once the set MAX limit is reached.
Relay contact 1 opens (safety circuit).
LED 1 goes out once the value falls below its limit.
Relay contact 1 closed.
LED 4 lights up once the set MIN limit is reached.
Relay contact 4 opens.
LED 4 goes out once the value exceeds its limit.
Relay contact 4 closed.
Operation
- continued -
MAX limit / MIN limit = Automatic intermittent boiler blowdown
Only applicable if:
Relay contact 1 (feedback LED 1) works as switching output for MAX limit
Relay contact 4 (feedback LED 4) works as switching output for automatic intermittent boiler
blowdown
LED 1 lights up once the set MAX limit is reached.
Relay contact 1 opens (safety circuit).
LED 1 is not illuminated if the actual value is below the
MAX limit.
Relay contact 1 closed.
LED 4 is illuminated during intermittent blowdown and
relay contact 4 is closed.
The intermittent blowdown valve opens.
LED 4 is not illuminated during the time between
intermittent blowdown.
Relay contact 4 is open, the intermittent blowdown valve
is closed.
Note
The MIN limit is activated approx. 60 seconds after the mains voltage has been applied.
During this time LED 1 or - depending on the setting - LED 4 is flashing rapidly.
1
2
3
4
Test
P
1
2
3
E
4
µS
ppm
GESTRA
LRR 1-40
1
2
3
4
Test
P
1
2
3
E
4
µS
ppm
GESTRA
LRR 1-40
1
2
3
4
Test
P
1
2
3
E
4
µS
ppm
GESTRA
LRR 1-40
1
2
3
4
Test
P
1
2
3
E
4
µS
ppm
GESTRA
LRR 1-40
