Operating The Pump; Shutdown; Operation; Control And Display Elements - Grundfos DDI 222 Montage- Und Betriebsanleitung

7.2 Operating the pump

To operate the pump, see sections
Note 9. How to use the control unit
and, if necessary, section

7.3 Shutdown

Warning
Risk of chemical burns!
Wear protective clothing (gloves and goggles) when
working on the dosing head, connections or lines!
Do not allow any chemicals to leak from the pump.
Collect and dispose of all chemicals correctly!
If possible, rinse the dosing head before shutting
Note
down the pump, e.g. by flushing it with water.
7.3.1 Switching off / uninstalling
1. Switch off the pump and disconnect it from the power supply.
2. Depressurise the system.
3. Take suitable steps to ensure that the returning dosing
medium is safely collected.
4. Carefully remove all lines.
5. Uninstall the pump.
7.3.2 Cleaning
1. Rinse all parts that have come into contact with the medium
very carefully:
– lines
– valves
– dosing head
– diaphragm.
2. Remove any trace of chemicals from the pump housing.
7.3.3 Storage
Storage of the pump:
1. After cleaning (see above), carefully dry all parts and reinstall
the dosing head and valves, or
2. change the valves and diaphragm.
See section 10. Maintenance .
7.3.4 Disposal
Disposal of the pump:
• After cleaning (see above), dispose of the pump in accordance
with the relevant regulations.
20

8. Operation

,
and 10. Maintenance
11. Fault finding chart .
8. Operation
In the event of a diaphragm leakage, the dosing
liquid may leak out of the hole in the intermediate
flange between the pump and the dosing head. The
parts inside the housing are protected from the
dosing liquid for a short time (depending on the type
of liquid) by the housing sealing. It is necessary to
Caution
check regularly (daily) if liquid is leaking out of the
intermediate flange.
Observe section 10.5 Diaphragm breakage
For maximum safety, we recommend the pump
version with diaphragm leakage detection.

8.1 Control and display elements

Mode
Stop
Menu
Start
Fig. 17 Display of DDI 222
Element Description
Light-emitting diode (LED)
• Lights up red when the pump is stopped.
• Lights up green when the pump is started
and briefly goes out during a suction
stroke.
• Lights up yellow when the pump is
Mode
switched off remotely.
• Flashes red if an error signal is present.
• Flashes red/green when an error message
is present and the pump is running, or
restarts automatically after the error has
been corrected.
• Goes out when the pump is in menu mode.
"Start/Stop"
• Use this button to start or stop the pump.
Stop
• Error signals can be acknowledged by
Start
pressing the "Start/Stop" button.
Use the "Menu/Info" button to switch between
Menu
the operating modes.
Info
Use the "Down" and "Up" buttons to change
Down
values in the display.
Up
8.1.1 Display test
A display test is automatically performed when the pump is
switched on. All the segments of the LCD are switched on for 3
seconds and the software version number is then displayed for 2
seconds.
8.1.2 Display indicator
When switched on (if the pump was stopped) and during pump
operation, the dosing flow setpoint is displayed. With contact
control the set ml/contact value is displayed.

8.2 Switching on/off

Before switching on the pump, check that it is
Caution
installed correctly. See sections
7.1 Initial start-up / subsequent start-up
• To start the pump, switch on the power supply.
• To stop the pump, switch off the power supply.
Down
Up
5. Installation and
.