Diaphragm liquid pump NF 60, NFB 60
Servicing
KNF Flodos AG BA_NF60_EN_05_069208
Translated from the Original Operating and Installation Instructions
21
Dismantling the pump heads
Loosen the four head screws (
1
) and remove the entire head.
Removing the valve plate
Remove the connecting plate (
5
) from the intermediate plate
(
7
).
Take the valve plate (
6
) out of the intermediate plate (
7
).
Remove the resonating diaphragm (
3
) and O-ring (
4
) from the
connecting plate (
5
).
Carefully grip the diaphragm (
8
) and remove by turning anti-
clockwise. Remove the support (
9
) and the washer (
10
),
making sure that no washers (
10
) fall into the pump housing.
We recommend replacing the diaphragm (
8
).
Clean the parts
Clean the resonating diaphragm (
3
), O-ring (
4
), connecting
plate (
5
), valve plate (
6
), intermediate plate (
7
), diaphragm (
8
),
support (
9
) and washer (
10
) with a cloth and then blow off with
compressed air.
Mounting the diaphragm
Place the washer (
10
), and the support (
9
) on the diaphragm
thread of the diaphragm (
8
), making sure that no washers (
10
)
fall into the pumping house.
Screw the diaphragm (
8
) back in and secure tightly.
By lightly pressing on the diaphragm push the ridge on the
underside of the diaphragm into the groove of the housing.
Mounting the valve plates
Insert the “dust free” valve plates (
6
) in the intermediate plate
(
7
), making sure they are in the correct position.
Mounting the pump head
Place the O-ring (
4
), and the resonating diaphragm (
3
) on the
connecting plate (
5
) and cover with the head plate (
2
).
The head plate (
2
) must be positioned so that the flow direction
arrows coincide with the connections on the connecting plate
(
5
).
Push the four head screws (
1
) into the through holes on the
pump head.
Place the pump head onto the pump housing and alternately
tighten the four head screws (
1
).
Re-connect the hoses to the pump head.
Fig. 13
1
Head screws
2
Head plate
3
Resonating diaphragm
4
O-ring
5
Connecting plate
6
Valve plate
7
Intermediate plate
8
Diaphragm
9
Support
10
Washer
