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IP66 Washable - Description of washing test

LINAK washable products are frequently put through a fully regulated washing test.

LINAK understanding of the word washable is that the products conform to this test and none other.

Reference: The Norm EN 60601-2-52, which includes special demands to fundamental safety and relevant functional characteristics for

hospital beds.

The demands for the washing process are described in the German “Maschinelle Dekontamination” from the organization

AK-BWA.

Description: At LINAK the washing test takes place in an instrument washing machine, which is ﬁtted and programmed in such a way that

it duplicates the process used in a typical hospital installation for the cleaning of beds and other medical equipment.

During the test the products are exposed to both thermal and chemical effects.

To avoid degreasing of the piston rod, the actuator should be retracted to minimum stroke and without load before washing.

Preparation: As plastic materials to a larger or lesser degree change characteristics and shape with time and climatical exposure, an aging

of the products is carried out ﬁrst.The conditions for aging are 65 °C +/- 2°C in normal dry air for10 days followed by a

minimum of 16 hours at room temperature before the washing process starts.

Procedure: Aging for 10 days at 65°C.

Rest for a minimum of 16 hours.

The washing process proceeds in the following way:

• Wash with Alkaline detergent for 2 min. with 70 °C warm water in the tank

• Rinse with neutral rinsing product for 20 sec. with 85 °C warm water in the tank

• Drying and cooling for 10 min. in open air at normal room temperature approx. 20 °C

• The washing process is repeated 50 times

Washing machine: The pressure before the nozzle must not exceed 8 bar and the distance between the nozzles and electrical components must

be at least 30 cm.

Only ﬂat squirt nozzles are allowed.

Water: Degree of hardness not more than 5° dH and no demineralized water.

Detergents: LINAK recommend the following products:

• Sekumatic FDR or FRE from Ecolab

• Neodisher Dekonta from Dr. Weigert

• Thermosept NDR from Schülke or similar with a pH-value of 5-8 and in a concentration of 0.5%

Rinsing aids: LINAK recommend the following products:

• Sekumatic FKN from Ecolab

• Neodisher BP or TN from Dr. Weigert

• Thermosept BSK from Schülke or similar with a pH-value of 5-8 and in a concentration of 0.2%.

Demands to products:

• They must not contain caustic solutions

• They must not change the surface structure or adhesive properties of the plastic

• Must not break down grease.

LINAK washing proﬁle according to EN60601-2-52 LINAK washing machine

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DK Digital CDB-700 Manuale Utente Pagina 14