Velp Scientifica
– UDK139 Operating Manual
10004762/B5
51
The filters are found on the tap water inlet and on the reagent inlets:
- Tap water inlet: remove the cooling water tube from the unit and pull the filter out
using small pincers. Clean the filter under running water or using compressed air
- Reagent inlets: the three reagent tubes with level sensors are fitted with filters
located at the lower extremity. Wearing protective gloves remove the filters by pulling
outwards. Open the filters by means of the ridge and wash under running water.
During this operation the tubes may empty. After repositioning the filters repeat the
manual filling of tubes (see chapter 4.6.1).
Replacing the test tube connection
(Frequency: Every 1000 analyses)
The test-tube connection must be replaced when it loses its elasticity, when it looks
deformed and does not provide a perfect seal, or after 500 analyses.
For easier removal carry out a wash-down cycle. The splash head can reach high
temperatures therefore take care when handling. Open the safety guard.
Remove the test tube, the test tube connection and the safety guard. The following
tips will facilitate removal:
1. Wearing a protective glove, grip the splash guard and rotate it whilst pulling
downwards.
2. Use a pointed tool or small screwdriver to exert leverage through the special
window accessed from the inside of the service door.
Proceed with replacement. The new test tube connection will be easily fitted if it is
soaked in warm water beforehand.
The splash guard should be cleaned using soft cloth dampened with warm water. Do
not use abrasive detergents or cleaning agents containing solvents.
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