Hach-Lange DR 3800 User Manual - Manual (Page 125)

125
Maintenance
WARNING
Burn Hazard. Wait until the lamp cools down. Contact with the
hot lamp can cause burns.
6. Push down on the pressure spring (see instrument label 2).
7. Remove the halogen lamp and the plug panel (see instrument
label 3).
Important Note: Hold the lamp by the fitting only. Avoid touching
the glass, as substances on the skin can bake onto the lamp bulb
and thus accelerate the ageing process of the lamp.
8. Plug a new halogen lamp to the panel.
9. Insert the halogen lamp with the half rounded part pointing up.
10. Press the plug with slight pressure into the direction of the
halogen lamp and push the pressure spring up, so that it will
engage.
11. Fold the fan again, so that it engages.
12. Use a screwdriver to screw the back cover to the instrument.
13. Plug in the power supply.
14. Reset the Lamp History, see section 6.8.5 on page 118 .