Millipore Milli-Q Guide De L'utilisateur page 21

MAINTENANCE
Milli-Q
Ac Gr Bio Syn A10
Replacing the MILLIPAK 40 (Figure 7)
The MILLIPAK 40 final filter should be changed whenever the product flowrate becomes too low (< 0.5 LPM)
or whenever the Quantum and Q-Gard cartridges are replaced. The lifetime of the MILLIPAK 40 is depend-
ent upon the quality of the feedwater and dependent upon the amount of water dispensed through the
Milli-Q.
To change the MILLIPAK 40
1. Make sure that the point of use trigger (C) is in the closed (upright) position.
2. Remove the venting cap (A) from the MILLIPAK 40.
3. Unscrew the MILLIPAK 40 from the female thread (B) on the point of use gun. Turn it
counterclockwise to unscrew it.
4. Install the MILLIPAK 40 as described page 20.
Sanitisation of the Ultrafiltration module
A regular sanitisation of the UF cartridge is necessary to obtain the best water quality and to have the
maximum life of the UF module. The Milli-Q system will periodically display every two weeks the message
"START SANIT." to inform you that a sanitisation is necessary.
There are two choices of sanitisation cycles in the software.
Cycle 1: (7 hours)
This is the typical sanitization cycle and will be used most of the time. This allows the UF module
to be sanitised at the start of an evening and throughout that night .
With Cycle 1, it will be necessary to close the Point of Use trigger after 21 minutes. After this,
the system can be left alone until the next morning.
Cycle 2: (8 hours)
This cycle contains a longer soak time and should be used whenever the UF module exhibits
reduced flowrate or is known to be fouled. This program should be started on the morning .
With Cycle 2, it will be necessary to close the Point of Use trigger after 71 minutes. After this,
the system can be left alone.
Before starting a sanitisation, it is necessary to have more than 25 litres of feedwater avail-
able.
22