Grundfos FV, Installation And Operating Instructions Manual, Page: 12 / 16

English (GB)
12
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
).
Immersion depth of suction lances
When using other containers, the required immersion depth must
be determined by measurement.
Counter nut
5. Maintenance and service
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.
Fig. 13
Foot valve (left), suction lance (right): removing the
strainer
5.2 Service
Foot valves and suction lances cannot be repaired.
Container type Volume [l]
Immersion
depth [mm]
Grundfos cylindrical tank
40 400
1000 1200
Grundfos square tank 100 470
Dimensioned drawing
Dimensions
Adaptor type
Material,
colour
Product No.
D1 L1
T
M
04
84
9
2
06
1
2
G 2 21 mm
Counter nut for drums with opening of
60 mm (without thread), e.g. 100-litre
square tank or 1000-litre cylindrical tank
PVC, grey 98071170
/
'
Caution
Clean the strainer of the foot valve or suction
lance regularly, depending on the degree of
pollution.
TM
04
85
22
1
11
2