BUCHI NIRFlex N-500 - Manual (Page 70)

7 Maintenance and repairs
70 NIRFlex N-500 Operation Manual, Version F
! CAUTION
Risk of minor burns by hot lamp module.
Switch off the device first and unplug the mains cable •
Do not touch hot parts or surfaces •
Let the lamp module cool down safely •
Do not touch the bulb glass •
To replace a defective lamp module, proceed as follows:
• Switch off the instrument and unplug the mains cable. Let it
cool down safely!
Loosen the two screws on the left rear of the instrument
•
approximately 3-5 turns.
Remove the cover.
•
For easy release of the housing slightly tilt the back part away
from the screws. Then pull out the housing towards the rear side
of the instrument. There is a built-in sensor to record the opening
of the housing.
A safety tack ensures that the lamp remains in
the correct position.
Slide the safety tack to the upright position (counterclock- •
wise).
Pull the metallic housing with the primary lamp out of the
•
lamp unit.
Exchange the primary lamp source with a new lamp by
•
removing it from the gray plug and connect the new primary
lamp source to this plug.
Insert the new lamp into the lamp unit and slide the safety •
tack back to the horizontal position until a metallic click sound
is audible, which indicates the right position. Make sure that
the gray plastic plug is in a vertical position.
Secure the housing of the lamp unit with the two screws on •
the back side of the unit.
Replacing the lamp module