Voith BTG Mutek PCD-06, Руководство по эксплуатации

Страница: 51 / 60

© BTG 2021 Operation Manual Mütek
TM
PCD-06 49
VII. Maintenance
VII. Maintenance
7.1 Cleaning
7.1.1 Cleaning the instrument
Use a soft and lint-free cloth to wipe the outer surfaces
of the instrument. Take care not to scratch the touch-
panel. If contamination persists, moisten the cloth with
soap water. A special cleaning procedure is required for
the measuring cell.
7.1.2 Cleaning the measuring cell
Clean the measuring cell with water and cleaning solu-
tion only.
After each measuring cycle, go through the following
cleaning routine:
Fig. 7-1 Measuring cell and displacement piston
• Empty the measuring cell.
• Rinse it with water.
• Use a brush and cleaning solution (see chapter
4.5.3 "Cleaning solution", page 26) to clean measu-
ring cell and displacement piston.
• Rinse both with de-ionized water.
• Empty the measuring cell.
• Use a clean paper cloth to dry the outside of the
measuring cell - but NOT the inside of the cell or the
displacement piston.
Hint
Not cleaning the measuring cell after each measure-
ment will lead to measuring errors and prevent reprodu-
cibility of results.
To avoid deposits in the measuring cell and on the
replacement piston, fill the freshly cleaned cell with
water and leave overnight.
7.2 Maintenance
7.2.1 Personnel requirements
Maintenance shall exclusively be carried out by quali-
fied and skilled personnel.
7.2.2 Functional testing
To avoid measuring errors caused by faulty operation of
the instrument or contamination of the measuring cell,
functional testing can be performed by different
methods.
7.2.2.1 Basic test of PCD-06 without measuring
cell
• Turn on power switch
• Switch on displacement piston drive
- A streaming potential of 0 mV will be displayed
7.2.3 Standard titration
Standard titration with Mütek™PCD-06 Light
Fill exactly 10 ml of the anionic standard anionic titrant
0.001 N into the measuring cell and titrate with cationic
titrant 0.001 N up to the point of zero charge.
The consumption of cationic titrant should be in the
range of 9.75 - 10.25 ml.
Information
With the Mütek™PCD-06 a standard titration can be
performed automatically, as described below.
Standard Titration with Mütek ™ PCD-06 Premium
• Press "New test"
• Select "Standard titration"
Information
If you select 5 ml anionic titrant, fill 5 ml de-ionized
water into the measuring cell.