Alyza IQ PO4
Maintenance and cleaning
101
ba76201d03
05/2020
5.2
Opening the locking device of the MultiPort valve
("Before opening: Drain the system")
The MultiPort Valve is the core element for the distribution and dosing of the liq-
uids in the measuring unit. The MultiPort valve is connected to the liquids by ex-
actly positioning the MultiPort valve and pressing it to the seals. The pressing of
the MultiPort valve to the seals is done by closing the locking device. Only then
is the system sealed at the contact points of the liquids.
How to prepare the maintenance of the measuring unit is described in detail with
the maintenance of the measuring unit (see section 5.5 Installing / exchanging
the ChemBags, MPV, tubes,
108).
Emptying the
system via the
Alyza menu
With an Alyza IQ ready for operation, empty the system via the Alyza menu.
WARNING
Dangerous chemicals.
Do not open the locking device of the MultiPort valve if the
maintenance activities at the measuring unit have not been
completed. Leaking chemicals can cause health problems
and damage the measuring unit.
Heed the following rules:
Carry out the
Öffnen der Messeinheit vorbereiten
func-
tion.
Carry out the
System entleeren
function.
Guide all tubes of the ChemBags over the tube fasten-
ers above the locking device.
Fix the tubes in the intervals of the tube fasteners.
Make sure that the connected ChemBags are safely sus-
pended from the supporting rod, and that they are not
pressed or moved while the locking device is open.
Make sure that the sample tubes (from the overflow ves-
sel to the measuring unit) are fixed in the recesses at the
left-hand side of the measuring unit.
Follow the safety instructions.
Wear protective equipment (lab coat, protective gog-
gles, chemical resistant protective gloves, safety
shoes)
Prior to opening the locking device always check whether the mea-
suring unit was prepared for the opening and whether the system
was emptied (e.g. tab
Status
in the Alyza menu).
1
Open the
Wartung Messeinheit
menu in the Alyza menu.
2
Select the function,
Öffnen der Messeinheit vorbereiten
.
Follow the instructions on the display.
The procedure starts the temperature adjustment of the measuring unit.
Содержание WTW Alyza IQ PO4
Страница 171: ......
