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Replace the TUV detector's lamp annually during the prescribed preventive maintenance (PM) or any time it repeatedly fails to light or when the detector fails to calibrate. The system automatically senses the lamp upon installation, and its serial number and installation date are automatically recorded in the Lamp Change Record table.
Note: Waters warrants 2000 hours of lamp life, or one year from date of purchase, whichever comes first.
Warning: To prevent burn injuries, allow the lamp to cool for 30 minutes before removing it. The lamp housing gets extremely hot during operation.
Warning: To avoid eye injury from ultraviolet radiation exposure:
Power-off the detector before changing the lamp.
Wear eye protection that filters ultraviolet light.
Keep the lamp in the housing during operation.
To replace the lamp:
Caution: Ensure that you allow the lamp to cool for at least 30 minutes before starting this procedure.
Power-off the system, and then disconnect the power cord.
Open the TUV detector's door.
Locate the lamp assembly cover (see the following figure).
To remove the lamp assembly cover, use a Phillips screwdriver to remove the one Phillips-head screw (see the following figure).
Lift the lamp assembly cover off.
Figure 1: Lamp assembly cover
Lamp assembly cover
Phillips-head screw
Disconnect the power cord to the lamp.
Loosen the two captive screws in the lamp base.
Figure 2: Lamp assembly base captive screws
Lift out the lamp assembly from the lamp housing.
Note: To prevent shattering the glass, use care when disposing of the lamp because the lamp gas is under slight negative pressure.
Figure 3: Removing the lamp assembly
Position the new lamp so the cut-out located on the lamp base is at the 1 o’clock position, in line with the alignment pin on the lamp housing.
Figure 4: Aligning the lamp
Cut-out on lamp base at 1 o’clock position
Alignment pin on lamp housing
Gently push the lamp forward until it bottoms into position.
Tighten the two captive screws.
Reconnect the lamp’s power connector.
Reinstall the lamp assembly cover using the one Phillips-head screw.
When ready to resume operation of the TUV detector, reconnect the power cord, and then power-on the system.
Detector maintenance procedures
