Operation
Commissioning the dosing pump
27
© Lutz-Jesco GmbH 2017
Subject to technical changes.
170502
BA-10010-02-V01
Solenoid-diaphragm dosing pump
MAGDOS LA / LD
Operating instructions
11 Operation
WARNING
Caustic burns or other burns through dosing media!
After connecting the mains supply, residual dosing media in the
dosing head can spray out.
ð
Before connecting the mains supply, connect the dosing lines.
ð
Check that all the screw connections have been tightened
correctly and are leak-proof.
CAUTION
Danger of automatic start up!
The dosing pump does not have an ON/OFF switch and may start to
pump as soon as it is connected to the mains supply. This means that
dosing medium can escape. Depending on the type and hazardous-
ness of the dosing medium, this can result in injury.
ð
Stop the dosing pump before disconnecting it from the mains
supply.
ð
Ensure that the dosing pump has been installed correctly before
connecting it to the mains supply.
11.1 Commissioning the dosing pump
Precondition for action:
ü
The dosing pump was fitted and installed in accordance with the sec-
tions “Fitting the dosing pump”, “Hydraulic installation” and
“Electrical installation”.
ü
All the mechanical fastenings have been inspected to ensure
adequate load-bearing capacity.
ü
The dosing head screws have been tightened with the correct torque.
ü
All the hydraulic sections have been inspected to ensure they are
adequately leak-proof and that the through flow direction is correct.
i
For initial commissioning, it is advisable to use water as the
dosing medium to check that the system is leak-proof and that
the dosing pump is functioning correctly. Check first whether
undesirable reactions could occur between the actual dosing
medium and the water.
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.
If the dosing head is fitted with a vent screw, vent the dosing pump
(see section 11.1.1 „Venting the dosing pump“ on page 27).
4.
Select an operating mode and start the dosing pump in accordance
with the instructions in the chapter 11.2 „Operating modes“ on
page 28.
4
The dosing pump primes. If it does not prime enough, use a priming
aid (see chapter 8.7.6 „Priming aid“ on page 21).
i
At initial commissioning, it is advisable to prime the pump
without backpressure. For this purpose, we recommend
installing a relief valve on the discharge side of the dosing
pump.
ü
The dosing pump is commissioned.
11.1.1 Venting the dosing pump
Plastic dosing heads are fitted with a vent screw. Gas bubbles can be
removed from the dosing head using vent screws, in order to improve the
performance of the pump. Whether venting is helpful depends on the
dosing medium and the size of the pump.
CAUTION
Danger of personal injury and material damage!
Dosing medium can escape if you loosen connections on the dosing
head (e.g. for venting) during operation.
ð
Use sufficient personal protective equipment.
ð
Follow the safety data sheet of the dosing medium.
ð
Clean the dosing pump if dosing medium escapes.
ð
Dispose of the dosing medium correctly.
Fig. 24: Dosing head venting facility with vent screw
Precondition for action:
ü
The dosing head venting facility connected has been connected in
accordance with the chapter 8.6 „Connecting the dosing head
venting facility“ on page 19.
Perform the following working steps:
1.
Select the
Internal
.operating mode.
2.
Press
Stop
.
3.
Keep
+
depressed until 100% delivery capacity is achieved.
Summary of Contents for MAGDOS LA
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