En
gl
is
h (
G
B)
20
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 Cleaning
If necessary, clean all pump surfaces with a dry and
clean cloth.
7.2 Service intervals
7.3 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).
7.3.1 Dosing head overview
Fig. 10
Dosing head, exploded view
Warning
If the diaphragm leaks or is broken,
dosing liquid will escape from the drain
opening on the dosing head (see fig. 2).
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 drain opening!
Interval
Task
Every day
Check, if liquid leaks from
dosing head, drain opening or
valves (see fig. 2). If necessary,
tighten dosing head screws
(3 Nm), valves and cap nuts,
or perform service
(see
7.3 Perform service
).
Every 2 years or
8000 operating
hours
Replace diaphragm and valves
(see
7.3 Perform service
)
Warning
Risk of chemical burns!
When dosing dangerous media,
observe the corresponding precautions
in the safety data sheets!
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 disconnected from the mains.
The system must be pressureless!
TM
04
1
1
2
3
2
110
1
Safety diaphragm
2
Flange
3
O-ring
4
Diaphragm
5
Valve on discharge side
6
Valve on suction side
7
Dosing head
8
Screws with discs
9
Cover
10
Deaeration valve
1
2
3
5
7
8
4
6
10
9
