Grundfos SMART Digital DDA, Installation And Operating Instructions Manual

Page: 33 / 44

E
ngl
ish (
G
B)
33
7. Service
In order to ensure a long service life and
dosing accuracy, wearing parts such as
diaphragms and valves must be regularly checked
for signs of wear. Where necessary, replace worn
parts with original spare parts made from suitable
materials.
Should you have any questions, please contact your
service partner.
7.1 Service system
According to the motor runtime or after a defined
period of operation, service requirements will
appear. Service requirements appear regardless of
the current operational state of the pump and do not
affect the dosing process.
* Since the last service system reset
Fig. 38 ’ Service soon ’
Fig. 39 ’ Service now ’
The service requirement signals when the
replacement of wearing parts is due and displays the
number of the service kit. Press the click wheel to
temporarily hide the service prompt.
When the ’Service now’ message appears (displayed
daily), the pump must be serviced immediately. To
signalise in the
’Operation’ menu, the symbol
appears in the ’Signal/error display’ area of the
display.
The number of the service kit required is also
displayed in the
’Info’ menu.
For media which result in increased wear, the service
interval must be shortened.
7.2 Perform service
Only spare parts and accessories from Grundfos
should be used for maintenance. The usage of non-
original spare parts and accessories renders any
liability for resulting damages null and void.
Information about carrying out maintenance can be
found in the service kit catalog on our homepage
(www.grundfosalldos.com).
Warning
If the diaphragm leaks or is broken,
dosing liquid will escape from the
discharge opening on the dosing head
(see fig. 3).
Take suitable precautions to prevent
harm to health and damage to property
caused by escaping dosing liquid!
Check daily whether liquid is escaping
from the discharge opening!
Service requirement
Motor
runtime
[h]*
Time interval
[months]*
’Service soon’ 7500 23
’Service now’ 8000 24
T
M
0
4
11
3
1
111
0
T
M
04
1
131 1
1
10
Service soon!
Please exchange
diaphragm and valves!
Service kit:
97xxxxxx
Service now!
Please exchange
diaphragm and valves!
Service kit:
97xxxxxx
Warning
When dosing dangerous media,
observe the corresponding precautions
in the safety data sheets!
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!
Caution
Before any work to the pump, the pump
must be in the ’Stop’ operational state
or be disconnected from the mains.
The system must be pressureless!