Xylem SI Analytics ViscoPump III Manual De Instrucciones página 42

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5 Maintenance and care of the device and the viscometers
Maintaining the proper functioning requires certain inspection and maintenance work.
Maintenance and service work includes:

Visual check

Interface function, ViscoPump III, and rinsing burettes

Once per quarter, the electrical contacts have to be inspected for corrosion, if the viscosity
measuring unit is used in premises with an occasional occurrence of corrosive matters in their
atmosphere.
Maintenance intervals
Normal operation
Under particular strain
In case of disturbances
5.1 Maintenance work to be carried out
Check the hoses, screwed connections for signs of visible damage, contamination, and leaks.
Check the electrical plug contacts for corrosion and mechanical damage
®
(on the AVS 370 Viscosity Measuring Unit and on the cables).
If necessary, the exterior of the casing of the viscosity measuring unit can be cleaned with a
piece of cloth soaked with a household cleaning agent. The lower and rear sections have to be
dry-treated.
In no case must liquid penetrate into the interior of the lower section.
Defective parts must be repaired or replaced with new ones.
Defective glass parts must always be replaced.
5.2 Maintenance and care of the VZ 7215 absorbent bottle
The VZ 7215 absorption traps which prevent contaminations from penetrating into the pneumatic system
of the ViscoPump have to be inspected at regular intervals.
The measurements will not work if there is an incorrect connection. There is a risk of the sample
leaking from the viscometer or being suctioned into the ViscoPump III.
If sodium lime is used acidic solvents as an absorption agent, the color condition of the indicator
is to be checked on a daily basis.

As soon as this condition has shifted to BLUE in the half of the absorber material, this is the very
last moment to replace the material for safety reasons.

If such a color shift cannot be observed over an extended period of time, this may be attributable
to the fact that an acidic over-saturation of the material has caused a de-coloration; this may then
appear as "normal", but it will definitely result in the destruction of the pneumatic system after
some time.
This situation is explicitly excluded from the warranty coverage!
When using activated carbon as an absorption agent (e.g. with solvents or used mineral oils),
a replacement should be made at intervals between 1 and 2 weeks; this depends on the load factor
which, in turn, is a function of the volatility of the materials.
intervals for carrying out all work is 6 months
the max. intervals for carrying out all maintenance work are 4 weeks
If any disturbance, malfunction, or other defect becomes obvious,
the work has to be carried out immediately.