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Neptune solenoid pump NSP-M
4.3.3 Control elements
a
c
Fig. 3:
Controller of dosing pump NSP-M
No.
Stroke frequency adjustment for setting the dosing capacity (in
1
per cent)
Connection sockets for external operation or connecting
2
accessories
3
Mains cable for power supply
Table 6: Designation of components
4.4 Function description
Dosing pumps are positive displacement pumps. They are used if
precisely defined delivery of a medium is necessary. A constant volume
per stroke or time is delivered.
The system delivers or meters the dosing medium by means of a
repeated sequence of suction strokes followed by pressure strokes. This
results in a pulsing flow.
If the dosing pump is in the suction stroke phase, the diaphragm is pulled
into the rear final position. Due to the resulting vacuum in the dosing
head, the pressure valve closes, the suction valve opens and dosing
medium flows from the suction line into the dosing head.
If the dosing pump is in the pressure stroke phase, the diaphragm is
moved into the front final position. Due to the pressure in the dosing head,
the suction valve closes and the dosing medium flows through the
pressure valve from the dosing head into the pressurised pipe.
b
Description
4.5 Rating plate
There is information on the equipment about safety or the product's way
of functioning. The information must stay legible for the duration of the
service life of the product.
1
12
NSP
2
3
5
4
10
7
T
Fig. 4: Rating plate NSP
No.
1
Product, type, nominal size
2
Maximum delivery capacity at average backpressure
3
Maximum delivery capacity at maximum backpressure
4
Protection class
5
Voltage supply
6
CSA certificate
7
WEEE label
8
Frequency
9
Power consumption
10
Serial number
11
Month / year of manufacture
12
Material of the dosing head/seals
Table 7: Rating plate
Operating instructions
11
9
8
6
Description
Product description
Rating plate
11
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