Lutz Easyzon D 100, Инструкция по установке, эксплуатации и обслуживанию

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Section 9: Operation
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9.3 Shutdown Procedures
Note:
The
Easyzon D
and the dosing pump(s) are two
separate pieces of equipment with respect to the
chlorine dioxide treatment/process on site.
•
The
Easyzon D
system operates automatically
only in response to when the batch tank is
running low.
•
The dosing pump(s) will automatically respond
only to the treatment/process conditions on site,
e.
g. water meter signal input and/or analyser
signal input.
9.3.1 Short-term Shutdown (<1 week)
Precondition for action:
✓
Easyzon D
in normal operation.
✓
Easyzon D
service apparatus is available to
carry out correct procedure.
Easyzon D
Shutdown steps:
1.
Place the
Easyzon D
into Manual Inhibit at the
control panel.
2.
Allow the process dosing pump(s) to continue to
operate long enough until the batch tank has
reached signal low level. On small dosing
applications 24 hours prior shutdown may be
required. It is assumed that the treatment process
is not critical, and the system is permitted to be
shutdown annually for service.
3.
Carefully remove each chemical precursor suction
line from the inlet of the in-line strainers.
4.
Ensure the open end of each suction line is
immediately placed back into its drum or tank to
avoid any chemical leakage on to the floor.
5.
Connect the open tube ends of the chemical
precursor water purge tubing kit to each in-line
strainer and place the foot valve into a bucket of
clean cold water.
6.
At the control panel, release the Manual Inhibit
function so that normal operation is resumed and
allow the
Easyzon D
to operate until the batch tank
is full.
7.
Remove the suction purge kit and safely rinse away
the remaining contents of the bucket of water.
8.
Switch off the electrical power to the
Easyzon D
system.
DANGER!
Risk of explosion due ClO
2
gas!
The two chemical precursors, hydrochloric acid (HCl)
and sodium chlorite (NaClO
2
) almost instantly form
large quantities of toxic ClO
2
gas, which can also
decompose in an explosive manner.
•
NEVER mix the two chemical precursors,
hydrochloric acid (HCl) and sodium chlorite
(NaClO
2
), except within the
Easyzon D
process.
WARNING!
Risk of toxic ClO
2
gas release!
When handling chemicals it is easy to make
mistakes. Toxic ClO
2
gas will release from accidental
mixing of chemicals and/or through careless
spillages.
•
Never pour chemicals from one canister drum
into another canister drum.
•
A chemical precursor day tank must be refilled
with the same chemical precursor canister drum.