Pelco TI2550 Manuel D’Utilisation

C1309M-A  (9/08)

25

1. Saturate a piece of optical-grade tissue with deionized water and drape it over the lens.

2. Let the surface tension of the water pull the tissue onto the surface of the lens, and then drag the tissue across the lens.

3. Repeat this procedure several times, using a new piece of tissue each time.

4. Saturate a piece of optical-grade tissue with isopropyl alcohol.

5. Repeat step 2.

6. Drag the piece of tissue with isopropyl alcohol over the lens several times to prevent liquid from pooling, which could leave a residue on the 

lens.