En
gl
is
h (
G
B)
36
8.4 Deaeration
Fig. 32
Manual deaeration of the dosing head
(while the pump is running)
1. Open the deaeration valve (V) of the dosing head
by approximately 1 turn (2 turns with Plus
3
system).
2. Press the "Start/Stop" button and keep it pressed.
– The pump switches to continuous operation.
3. Leave the pump running until the medium flowing
from the deaeration line (J) is free of air bubbles.
4. Carefully close the deaeration valve.
8.5 Changing the tank with Plus
3
system
For pumps with Plus
3
system, the tank can also be
changed during operation by using the supply of
dosing medium in the priming chamber.
Changing the tank
1. Remove the suction line, overflow line and
deaeration line from the empty tank.
– The dosing medium is then supplied from the
tank (F).
2. Insert the suction line, overflow line and
deaeration line into the new tank.
3. Do
not
immerse the overflow line and deaeration
line in the dosing medium. Route the lines
downwards and without loops.
9. How to use the control unit
9.1 Menu levels
Menu levels used in the control unit
•
First function level:
for selecting and setting the
operating modes of the pump (Manual, Contact,
Analog), performing the batch and timer functions
and starting the pump.
•
Second function level:
for setting and viewing
additional functions, selecting and setting the
batch and timer functions and setting the access
code to protect the pump against unintentional or
unauthorised access to pump settings.
•
Service level:
for setting the pump type and the
unit of display for the dosing flow (l/h or gal/h)
and setting the inputs and outputs.
Saving user settings
The pump settings are automatically saved
approximately every 10 minutes and remain as they
are even after the power supply has been switched
off.
9.2 General functions of the control unit
9.2.1 Deaeration and suction
If the "Start/Stop" button is pressed for longer than
1 second, the pump switches to continuous
operation for as long as the button is held down
(e.g. for suction or deaeration).
This happens regardless of the selected operating
mode. (In batch or timer mode, the pump has to be
stopped first.)
9.2.2 Locking "run"
The pump can be locked to avoid manual stopping.
When activating this function (service level), the
pump starts running with the present settings and
cannot be stopped using the "Start/Stop" button.
It is still possible to acknowledge error messages
using the "Start/Stop" button.
Stopping the pump when the locking "run" is
activated
•
If remote on/off is connected, use remote off.
•
Disconnect the pump from the power supply.
9.2.3 Two-stage tank-empty signal
This function is used to provide a warning when the
tank is almost empty and to switch off the pump
when the tank is empty. To use the pre-empty signal,
ensure that the suction line is equipped with two float
switches.
T
M
03
62
63
45
06
Warning
The dosing medium is constantly
supplied from the overflow line while
the pump is running. Take suitable
steps to ensure that the dosing
medium is safely collected!
Warning
Risk of chemical burns!
Wear protective clothing (gloves and
goggles) when working on the dosing
head, connections or lines!
Caution
Do not let the calibration tube (E) run
empty!
Note
There is only a limited amount of time
available to change the tank,
depending on the pump type and
dosing flow, e.g. 30 seconds at a
dosing flow of 6 l/h!
If air has been sucked in, briefly
increase the stroke setting to 100 %
and switch the pump to continuous
operation.
V
J
Note
First see sections 5. Installation,
7. Start-up / shutdown and
7.2 Operating the pump. Only the
additional functions are described in
this section.
Note
For "Batch manual", the "Run" button
should not be locked as the pump then
runs in continuous operation.
Содержание DDI 209
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