En
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8. 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.
For the full range of service kits and spare parts see
the service kit catalogue:
•
http://net.grundfos.com/qr/i/96488862_23
or the Grundfos Product Center:
•
https://product-selection.grundfos.com
Should you have any questions, please contact your
Grundfos service partner.
8.1 Regular maintenance
*
For media which result in increased wear, the
service interval must be shortened.
8.2 Cleaning
If necessary, clean all pump surfaces with a dry and
clean cloth.
8.3 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.
Maintenance work must only be carried out
by qualified persons.
The pump housing must only be opened
by persons authorised by Grundfos.
Observe section
.
Interval
Task
Daily
Check, if liquid leaks from the drain
opening on the dosing head and if the
drain opening is blocked or soiled.
See fig.
-
, pos. 8.
If so, follow the instructions given in
section
.
Check, if liquid leaks from the dosing
head or valves.
If necessary, tighten dosing head
screws with a torque wrench. Torque
[Nm]: 6 (+ 1).
If necessary, tighten valves and cap
nuts, or perform service (see
Weekly
Clean all pump surfaces with a dry
and clean cloth.
Every 3
months
Check dosing head screws.
If necessary, tighten dosing head
screws with a torque wrench. Torque
[Nm]: 6 (+ 1). Replace damaged
screws immediately.
Every 2
years or
8000
operating
hours*
Replace diaphragm and valves (see
CAUTION
Chemical hazard
Minor or moderate personal injury
- Observe the material safety data sheet
of the dosing medium.
- Wear protective clothing (gloves and
goggles) when working on the dosing
head, connections or lines.
- Collect and dispose of all chemicals in a
way that is not harmful to humans,
animals and the environment.
Before starting work on the pump, the
pump must be disconnected from the
power supply. The system must be
pressureless.
