1 Startup/shutdown of a mzr-pump
Instruction for startup/shutdown
Nature of the delivered liquid
Flushing time [min]
Suitable flushing liquid
1
Oils, fats, plastifierss
15-20
isopropanol, ethanol, acetone,
benzine/petroleum ether
2
Solvents (polar + nonpolar)
5-10
isopropanol, ethanol
3
Other organic liquids
10-15
isopropanol , ethanol
4
Refrigerating and cooling agents 15-20
isopropanol,
ethanol
5
Neutral water/y solutions 20-25
isopropanol,
ethanol
6 Basic
solutions
25-30
DI-water (deionized water)
7 Organic
acids
30-40
isopropanol, ethanol
8
Weak mineral acids
25-30
DI- water
9
Strong mineral acids 35-45
DI-
water
10
Strong oxidizing liquids
35-45
DI- water
11
Paints, varnishes, adhesives
50-60
not specified - for further information
please contact HNP Mikrosysteme.
table 1
Selection of the flushing liquid (solvent) and the duration of the flushing procedure depending on the
delivered liquid.
Warning
Please make sure that the pump components and particularly O-rings and
sealing are resistant to the employed flushing liquid (see table 2).
Shaft sealing
O-ring material
Flushing liquid
PTFE,
graphite-
reinforced
UHMWPE
FKM
EPDM
FFKM
acetone 0
0
3
0
0
benzene 0
3
1
3
0
benzyl alcohol
0
-
0
2
0
butanol 0
-
1
0
0
dimethyl sulfoxide (DMSO)
0
0
3
0
0
ethanol 0
0
0
0
0
isopropanol 0
0
0
0
0
methanol 0
0
2
0
0
methylethylketone (MEK)
0
0
3
1
0
styrene 0
-
1
3
1
toluene 0
1
2
3
0
water 0
0
0
0
0
xylene 0
1
2
3
0
benzine/petroleum ether
0
0
0
3
0
oil / fine mechanics oil
0
0
0
3
0
Legend:
0 ... good suitability 1 ... suitability 2 ... conditional suitability 3 ... labile - ... not specified
table 2
Resistance of the sealing materials depending on the flushing liquid (solvent)
Last update: March 2015
Technical data subject to change without prior notice!
3
