Maintenance

7.3 Lamp replacement

CAUTION

To avoid a possible electric shock, disconnect the instrument from the power source before servicing the lamp.

1.Remove the cuvette from the cell compartment.

2.Switch the instrument off.

3.Unplug the power cord.

WARNING

Burn Hazard. Wait until the lamp cools down. Contact with the hot lamp can cause burns.

4.Turn the instrument over carefully and place it on a soft surface.

5.Use a screwdriver or a coin to remove the screw from the cover.

6.Remove the cover and place it to one side.

7.If there is a battery in the instrument, push it out and put it to

one side too, see section 7.2.1 on page 111.

8.Use a screwdriver (slotted or cross-headed) to remove the screws from the lamp fitting.

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Hach DR 2800 user manual Lamp replacement, 113