Operating instructions

• Adjustment to minimum flow / flow standstill (LO-Teach),
optional
The unit detects the current flow and sets this value as the minimum
display value for the LED display. In normal operation the first green
LED (LED 0) flashes when the flow falls below this value (or when it
comes to a standstill).
NOTE: The LO-Teach operation may only be carried out after the HI-
Teach operation.
• Remote adjustment
You can also adjust the unit via the programming wire, if the function
for remote adjustment is active. Apply the operating voltage (+U
B
) to
pin 2 (P) for the respective time: min. 6s / max. 8s for HI-Teach; min.
11s / max. 15s for HI-Teach.
ENGLISH
31
If the operating voltage is applied to pin 2 for more than 15s,
• the adjustment does not become effective; the unit passes into the
operating mode with unchanged values,
• the unit is locked (the buttons are inactive as long as the operating
voltage is applied).
1
2
Press the Learn/Set button and
keep it pressed.
The green LEDs on the right and
on the left flash,
after 5s the LED bar (green) fills
from left to right
after a further 5s the LED bar
(gren) fills from right to left
(release the button now).
The indication goes off briefly.
The unit stores the current flow
as minimum flow and passes into
the operating mode.
LO HI
LO HI
HILO
LO HI
11-15s
M
S
Allow the medium to flow through the system at the required
minimum flow rate or bring to a standstill.