The instruments uses two types of light source lamps: D2 (deuterium) lamp and WI (halogen) lamp.(No used D2 lamp by UVmini-1240) The D2 lamp and WI lamp are used for ultraviolet region (190 nm - light source switching wavelength) and visible/near-infrared region (light source switching wavelength - 1100 nm), respectively.
The closer the lamp service life comes to its end, the smaller the light intensity of each lamp, and the greater the noise in photometric data.
« Lamp Replacement Procedure »
WARNING:
• Before replacing the lamp, turn OFF the instrument power switch and remove the electric plug from the outlet. Failure to do so may result in fire, electric shock, and instrument malfunction. DO NOT turn ON the instrument power while the light source compartment is visually exposed. Ultraviolet light may be generated, a serious health hazard.
• Before replacing the lamp, turn OFF the instrument and let it stand until the lamp cools down sufficiently. Touching the lamp when it is still hot will burn you.
• Before replacing the lamp, turn OFF the instrument and let it stand until the lamp cools down sufficiently. Touching the lamp when it is still hot will burn you.
CAUTION:
• When removing and installing the light source compartment cover, avoid hitting the protrusion on the top of the D2 (deuterium) lamp against the back of the cover. Doing so may cause a vacuum leak in the lamp tube.
• Be sure to wear gloves when handling the light source so as not to leave fingerprints on the glass part. A fingerprint will burn onto the bulb when the light source gets hot, and light transmission will deteriorate.
• Be careful not to break the lamp.
• When replacing the WI (halogen) lamp, your hand may contact the D2 lamp. Cover the D2 lamp with a clean paper or cloth or remove the D2 lamp before the work.
• After inserting the WI lamp into the socket, DO NOT forcedly move it to right and left or up and down. The connection part between the pin and glass may crack, which makes it impossible for the lamp to illuminate.
• Be careful not to break the lamp.
• When replacing the WI (halogen) lamp, your hand may contact the D2 lamp. Cover the D2 lamp with a clean paper or cloth or remove the D2 lamp before the work.
• After inserting the WI lamp into the socket, DO NOT forcedly move it to right and left or up and down. The connection part between the pin and glass may crack, which makes it impossible for the lamp to illuminate.
1. Removing the light source compartment cover
1) Using a Philips screwdriver, loosen the fixing screw located on the side of the light source compartment cover.
2) Lift up the side part of the cover to release the notch from the fixing screw.
3) While sliding the light source compartment cover and lifting it up at an angled, remove it from the main body.
(1) WI lamp, (4) D2 lamp
2. Replacing the WI (halogen) lamp
1) Remove the WI lamp retainer spring from the top of the WI lamp.
2) Pull out the WI lamp from the socket.
3) Wear gloves. Hold the new WI lamp at the top and bottom so as not to taint its beam port.
4) Insert the new WI lamp into the socket. Push it forward until the two pins of the WI lamp contact the back of the socket and stop.
4) Insert the new WI lamp into the socket. Push it forward until the two pins of the WI lamp contact the back of the socket and stop.
NOTE: The two pins of the WI lamp do not have polarity. Either pin can be the upper side.
5) Return the WI lamp retainer spring, removed in procedure 1, to the original position.
6) Reinstall the WI lamp to the original position. Make sure that no paper or cloth used for the work is left in the light source compartment.
7) Install the light source compartment cover by the reverse procedure of that described in "Removing the light source compartment cover" in this section.
8) Insert the electric plug into the outlet, and switch ON the UV insyrument. (Press the "|" side on the switch.)
9) The initialization process starts. Verify that the initialization for all items is successfully completed. (i.e., "OK" is displayed for all items.)
10) When the Mode menu screen is displayed, to reset the WI lamp usage time.
3. Replacing the D2 lamp
1) Wear gloves. Hold the resin part of the D2 lamp, and slowly pull it straight up.
2) Slowly extract the D2 lamp upward to remove it from the socket.
2) Slowly extract the D2 lamp upward to remove it from the socket.
3) Insert the new D2 lamp into the socket. Fit the locating lug at the bottom of the D2 lamp to the socket notch.
Make sure that the lamp is inserted all the way.
Make sure that the lamp is inserted all the way.
4) Install the light source compartment cover by the reverse procedure of that described in "Removing the light source compartment cover" in this section.
5) Insert the electric plug into the outlet, and switch ON the UV instrument. (Press the "|" side on the switch.)
6) The initialization process starts. Verify that the initialization for all items is successfully completed. (i.e., "OK" is displayed for all items.)
7) When the Mode menu screen is displayed, to reset the D2 lamp usage time.
4. Checking the Lamp Usage Time
1) Press the (F3)[Mainte.] key in the Mode menu screen
2) The Maintenance screen appears and the accumulated usage time of the light source lamps are displayed.
3) Press the [RETURN] key to return to the Mode menu screen
5. Resetting Procedure
The procedure for resetting the lamp usage time is given below, using the D2 lamp as an example.
1) Press the (F3)[Maint.] key in the Mode menu screen
2) Press the (2)[2. Reset lamp usage time] key in the Maintenance screen
3) The window for selecting the lamp whose usage is to be reset appears.
Use the [ ↑ ][ ↓ ] keys to move the cursor to [D2 lamp], and press the [ENTER] key.
Use the [ ↑ ][ ↓ ] keys to move the cursor to [D2 lamp], and press the [ENTER] key.
4) Use the [←][→] keys to select [Yes], and press the [ENTER] key. The lamp usage time will be reset.
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