130Maintenance4. Install the lamp holder in the instrument.Note: Take care that the lamp cable is not pinched by the cableguide.5. Using a cross-head screwdriver, tighten the two lamp holderscrews.6. Replace the lamp cover.7. Using a slot-head screwdriver tighten the cover screws.8. Connect the power cable to the instrument.9. Reset the lamp operating time section 6.8.8, page 123.7.3 Exchange of the replaceable cell compartmentIf there is severe soiling, the complete cell compartment (2) canbe replaced.1. Switch off instrument.2. Remove the power cable from the instrument.3. Using a cross-head screwdriver, undo the two screws on thefloor of the cell compartment.
