Maintenance And Service; Maintenance; Service - Grundfos RSL Montage- Und Betriebsanleitung

4.3.3 Connecting a suction lance to a container without
opening provided
4. Cut a hole (∅60) into the container top surface and insert the
suction lance.
5. Fix the suction lance with the counter nut.
6. Adapt the immersion depth of the suction lance
(see section 4.3.1 Connecting to a Grundfos
Immersion depth of suction lances
Container type
Grundfos cylindrical tank
Grundfos square tank
When using other containers, the required immersion depth must
be determined by measurement.
Counter nut
Dimensional drawing

5. Maintenance and service

Clean the strainer of the foot valve or suction lance
Caution
regularly, depending on the degree of pollution.

5.1 Maintenance

Clean the strainer,
• if it is soiled
• if the suction performance drops.
5.1.1 Cleaning the strainer
1. Shut down the dosing system.
2. Suction lances or foot valves with level indication: disconnect
signal line from the pump or downstream device.
3. Remove suction line from the dosing head. If existing, remove
deaeration line from the dosing head.
4. Take suction lance or foot valve out of the container.
5. Empty the suction lance.
6. Suction lance: Unscrew inlet with strainer unit from the bottom
of the suction lance and clean it.
Foot valve: Unscrew inlet with weight and strainer from the
valve, remove the strainer and clean it.

5.2 Service

Foot valves and suction lances cannot be repaired.
tank).
Immersion
Volume [l]
depth [mm]
40 400
1000 1200
100 470
Dimensions
D1 L1
Counter nut for drums with opening of
G 2 21 mm 60 mm (without thread), e.g. 100-litre
square tank or 1000-litre cylindrical tank
Adapter type
Fig. 13 Foot valve (left), suction lance (right): removing the
strainer
Material,
Product No.
colour
PVC, grey 98071170
13