User Guide

Table Of Contents

1 Flap with grooved ring

2 Tab for opening the flap

3 Protective glass 4 Flap with grooved ring (open)

Fig. 5-12

3. When the protective glass cassette is removed, move the

tab (2) up with your index finger and open the flap.

4. Take the protective glass (3) out of the protective glass cas-

sette.

5. Soak lens cleaning paper or swab with methyl alcohol and

clean the protective glass cassette.

6. Clean the flap and grooved ring with methanol.

If the grooved ring is damaged:

Replace flap with grooved ring.

To do this, loosen the fastening screws to the left and

right on the flap.

Note

Do not touch the protective glass cassette with the fingers.

Fig. 5-13

7. Insert a new protective glass into the protective glass cas-

sette.

8. Close the flap.

9. Change the objective protective glass.

If soiled:

22-50-17-CRen

2020-01

Welding optics

5‐21

Inserting new protective

glass (BEO D50 Basic)