Hach Portable Spectrophotometer DR 2800, User Manual

Page: 115 / 126

115
Maintenance
13. Carefully unplug the halogen lamp from the plug panel.
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 aging process of the lamp.
14. Plug a new halogen lamp to the panel.
15. Insert the halogen lamp with the half rounded part pointing
down.
16. Press the plug with slight pressure into the direction of the
halogen lamp and push the pressure spring down, so that it will
engage.
17. Carefully insert the lamp fitting again.
18. Use a screwdriver (slotted or cross-headed) to replace the
screws to secure the lamp fitting.
19. Put the battery back in place, see section 7.2.1 on page 111 .
20. Use a screwdriver or a coin to screw the back cover to the
instrument.
21. Carefully stand the instrument upright.
22. Plug in the power supply.
23. Reset the Lamp History, see section 6.7.5 on page 104 .