Commissioning
29
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200922
BA-62010-01-V01
Chlorine Dioxide System
EASYZON Dd
Operating Instructions
10 Commissioning
10.1 Controls and preliminary arrangements
Perform the following working steps:
1.
Make sure that all hydraulic connections have been completed and
that unions have been well tightened.
2.
Power on the installation.
3.
Make sure that voltage is powered to the electronic control unit (the
display is powered on), but keep the producer off.
4.
Put a bucket full of water where to temporarily immerse the suction
pipes of the dosing pumps. In fact, the first part of the start phase
shall be carried “blank”, i.e. without using any chemical product, so
that you can check the tightness of all hydraulic circuits and avoid
any problem in case of leakage to be repaired.
5.
Connect small pipes 6 x 4 mm in size and made of flexible PVC to the
drain spouts of the vent valves mounted at the outlet of the pumps;
these small pipes are to be put back into the bucket from which to
aspirate.
6.
Later these small pipes shall be put back into their tanks.
ü
Controls and preliminary arrangements done.
10.2 Pumps bleed
i
Since the plant is tested at the factory, no problem should oc-
cur during this phase, unless electrical connections have been
improperly wired.
Perform the following working steps:
1.
Open the inlet and outlet valves of the pre-dilution unit on the plant.
2.
Start the pre-dilution pump.
3.
Set the flow rate to ca. 600 – 800 l/h by means of the ball valve at the
inlet of the flow meter.
4.
Press keys
BLEED
and
START
on the electronic control unit to
begin the start-up phase.
4
This phase automatically controls the operation of the dosing pumps
for about two minutes at their maximum working frequency.
5.
Press key
STOP
to stop the phase.
6.
Open the vent valve placed in the front section of the dosing pumps
head by rotating it by 2 – 3 turns so to bleed air from the suction
pipes.Close the vent valve again only after water has started to come
out. Carry out this operation on both dosing pumps.
7.
If the BLEED phase stops while performing these operations, press
again
START
to start a new cycle.
8.
After bleeding the pumps and after water has started to flow into the
reactor, close the vent valves and lift fully up the (green) coils of the
flow sensors beneath the reactor. Then lower them down gradually
until the relevant LEDs on the electronic control unit display (Acid and
Chlorite) distinctly and continuously blink.
ü
Pumps bleeded.
10.3 Control of the safety systems
Perform the following working steps:
1.
Repeat the bleed operation several times. Make sure no hydraulic
circuit is leaking.
2.
Lift a flow sensor up until the relevant LED on the electronic control
unit stops blinking.
4
After 8 pulses the producer shall stop.
3.
Place the sensor again as described before.
4.
Reset the shutdown (
alarm
and then
Enter
).
5.
Repeat the same operation with the other sensor.
6.
Remove first one minimum level switch and then the other from the
storage tanks.
4
The producer shall stop after a 10s delay (to avoid oscillations). Put
the switch into the tank.
7.
Reset the shutdown (key
alarm
and then
Enter
).
8.
Repeat the same operation with the other sensor. If no stop occurs,
check the electrical connections and the proper operation of level
switches.
ü
Control of the safety systems done.
10.4 Check of the pumps flow rate and setting of
configuration parameters
IMPORTANT
Perform the following working steps:
1.
Power the producer off.
2.
Connect the suction of the dosing pumps to proper suction pipes in-
serted into graduated cylinders.
3.
Carry out one or more bleed operation.
4.
Calibrate the pumps as described in the
calibration
menu. Execute
a manual calibration, then Enter the total aspirated values in the rele-
vant parameters.
5.
Enter the desired operation mode in Menu/Operator/Operation Mode.
6.
Start the producer.
ü
Check done.
10.5 Start-up
Perform the following working steps:
1.
Put the suction pipes of the dosing pumps into the storage tanks of
the production reagents.
2.
Repeat one bleed phase as described above.
3.
Set the required operation mode and the relevant parameters on the
electronic control unit, in compliance with the instructions supplied in
the relevant chapter.
ü
Start-up done.
