Operation
Commissioning the dosing pump
40
© Lutz-Jesco GmbH 2014
BA-10103-02-V01
Stepper Motor-driven Diaphragm Dosing Pump
MEMDOS SMART LK
Operating instructions
Perform the following working steps:
1.
Open the shut-off valves on the suction and discharge sides if
present.
2.
Plug in the dosing pump's mains plug to the power supply.
3.
Vent the dosing pump (see chapter 11.1.1 „Venting the dosing
pump“ on page 40).
4.
Scale the delivery capacity of the dosing pump, if necessary (see
chapter 11.1.2 „Scaling the delivery capacity“ on page 40).
5.
Calibrate the dosing pump (see chapter 11.1.3 „Calibrating the
dosing pump“ on page 41).
6.
Select an operating mode and start the dosing pump in accordance
with the instructions in the chapter entitled 11.2 „Operating modes“
on page 41.
The dosing pump primes. if it does not prime enough, use a priming
aid (see chapter 8.7.6 „Priming aid“ on page 27).
i
At initial commissioning, it is advisable to prime the pump
without back pressure. For this purpose, we recommend
installing a relief valve on the discharge side of the dosing
pump.
The dosing pump is commissioned.
11.1.1 Venting the dosing pump
Fig. 45: Dosing head venting facility with vent screw
Precondition for action:
The dosing head venting facility has been connected in accordance
with the chapter entitled 8.6 „Connecting the dosing head venting
facility“ on page 22.
Perform the following working steps:
1.
Open the vent screw by one complete turn (looking onto the dosing
head, anti-clockwise).
2.
Press
Menu
.
3.
Use the or key to choose the
Venting
menu item and press
OK
.
4.
Press the
Start
key and keep it pressed.
The dosing pump starts delivery at the highest stroke frequency.
5.
Release
Start
key as soon as there is a continuous throughfl ow
from the dosing head venting facility with no air bubbles.
The dosing pump stops delivery.
6.
Close the vent screw.
The dosing pump is vented.
i
If you are using effervescent media, allow them to fl ow out
continuously. Open the vent screw such that about one drop
per 1- 3 strokes escapes.
11.1.2 Scaling the delivery capacity
You can use the
Scaling
function to adjust the MEMDOS SMART LK
fl exibly to the local conditions during the start-up. Sometimes, a dosing
pump model selected during the planning phase turns out to be too big.
To minimise the risk of overdosing, the delivery capacity can be limited or
scaled.
The reduced delivery capacity applies to all operating modes of the
dosing pump. The setting is retained even after an interruption to the
power supply.
Perform the following working steps:
1.
Press
Menu
.
2.
Use the or key to choose the
Scaling
menu item and press
OK
.
3.
Use the
+
and
-
keys to set the desired delivery capacity in l/h and
press
OK
.
The bar that indicates delivery capacity is now displayed in two
parts.
Manual mode
Menu
Stop
-
+
Liter
day
75.0%
90.0
Fig. 46: Display with scaled delivery capacity
The meaning of the bars is as follows:
Bar
Meaning
top
The scaled delivery capacity value (part of the
delivery capacity in the factory setting)
bottom
The current delivery capacity expressed as a
percentage of the scaled delivery capacity
Delivery capacity scaled.
i
To reverse scaling, set the delivery capacity in the
Scaling
menu to the value 0 or to the maximum possible value.
