31
Subject to technical changes.
Neptune stepper motor-driven diaphragm pump NXP-M and NXP-P
Operating instructions
Operation
Venting the NXP-M
Perform the following working steps:
1.
Open the vent screw by one complete turn (looking onto the dosing
head, anti-clockwise).
2.
Start the pump. To this end, set the stroke frequency to 100%.
3.
Stop the pump as soon as there is a continuous throughflow from the
dosing head venting facility with no air bubbles. Turn the stroke
frequency setting to 0% to stop the pump. The dosing pump stops
delivery.
4.
Close the vent screw.
ü
The dosing pump is vented.
Venting the NXP-P
Perform the following working steps:
1.
Select the
Internal
.operating mode.
2.
Press
Stop
.
3.
Keep
+
depressed until 100% delivery capacity is achieved.
4.
Open the vent screw by one complete turn (looking onto the dosing
head, anti-clockwise).
5.
Press
Start
.
4
The dosing pump starts delivery at the highest stroke frequency.
6.
Press
Stop
, as soon as there is a continuous throughflow from the
dosing head venting facility with no air bubbles.
4
The dosing pump stops delivery.
7.
Close the vent screw.
ü
The dosing pump is vented.
i
If you are using strongly effervescent dosing media, allow
them to flow out continuously. Open the vent screw such that
about one drop per 1 – 3 strokes escapes, then close the
discharge.
11.2 NXP-P: Operating modes
The NXP-P dosing pump has the following operating modes:
n
Internal
- Manual setting of the delivery capacity,
n
External
- Controlling the stroke frequency and number of strokes in
dependence on the number of pulses and the pulse spacing.
11.2.1 Internal operation
11.2.1.1 Selecting the operating mode
1.
Press the
Int
key to select the operating mode.
4
The dosing pump displays the start screen of Internal operating
mode with the symbol .
Ext
Start
- +
0%
Fig. 29: Start display internal operation
11.2.1.2 Starting the dosing pump
1.
Use the
+
and
-
keys to set the desired stroke frequency. Adjustment
range: 0 – 100%.
i
Pressing the
+
and
-
keys increases/decreases the stroke
frequency by 1%. If you keep the key depressed, the stroke
frequency increases/decreases increasingly in intervals of 2, 5
and 10.
2.
Press
Start
.
ü
Dosing pump has started.
11.2.1.3 Stopping the dosing pump
è
Press
Stop
.
4
The system displays the "Stop" signal and
Stop
changes to
Start
.
ü
Dosing pump has stopped.
11.2.2 External operation
The stroke frequency and consequently the delivery capacity of the
dosing pump NXP-P in the
External
operating mode is determined by
the quantity and interval of the incoming pulses in connection with the set
transmission factor.
11.2.2.1 Selecting the operating mode
è
Press
Ext
to start the device.
4
The dosing pump displays the start screen of the
External
operating mode with the symbol .
Int
Start
- +
100%
Fig. 30: Start display external operation