Hach DR/2010 Manuel utilisateur

46645-88

DR/2000 and DR/2010 Spectrophotometer

Lamp Replacement

Purpose

These instructions provide a step-by-step procedure for replacing the lamp in DR/2000 and

DR/2010 Spectrophotometers. Remember, a wavelength calibration adjustment must be done

after replacing the lamp. See the Wavelength Calibration Adjustment instructions shipped with

the lamp.

The lamp shipped with this instruction sheet is one of two designs. One lamp has a single square

slot and a light slit (see Figure 1). The other lamp has a v-shaped slot and a square slot (see

Figure 2). Instructions for installing each lamp are slightly different in step 4.

Lamp Replacement

If the lamp fails and must be replaced, proceed as follows.

1. Disconnect the Battery Eliminator and the RS 232 connector. Turn off the power switch and

empty the cell holder. Place the instrument upside down on a padded surface.

2. Remove the two screws securing the lamp compartment cover and remove the cover (see

Figure 1).

3. Remove the lamp retainer screw and metal sleeve from the lamp channel. The sleeve is

tapered at the bottom end, and, because of its snug fit, probably needs to be loosened with a

tool (needle-nose pliers are recommended) for removal. Remove the lamp. Loosen the two

terminal screws to free the lamp leads.

4. To replace a lamp with two notches (Figure 1), place the new lamp in the lamp channel with

the light slit toward the light slit in the channel.

To replace a lamp with a single notch (Figure 2), place the new lamp in the lamp channel

with the V-shaped groove facing the wavelength dial. The square notch in the new lamp

should be placed against the side with the retainer screw.

5. Push the lamp to the bottom of the lamp channel and install. Firmly tighten the lamp retainer

screw and sleeve in the channel to secure the lamp. Secure the sleeve with the beveled end

down. The lamp must be held tightly in the proper position, flush against the bottom, the

end, and the light slit side of the lamp channel (see Figure 2). Connect the lamp leads of the

new lamp assembly at the lamp terminals (lead orientation does not matter).

Do not overtighten.

6. Install the lamp compartment cover. Return the instrument to the upright position and

restore power.

Note: Some internal components are sensitive to static and may be damaged by external static electricity.

Always re-install the lamp cover after maintenance or servicing.

7. Perform the Lamp Calibration Adjustment procedure described in the instruction shipped

with the lamp.

All manuals and user guides at all-guides.com

LAMP REPLACEMENT, continued

Figure 1 Lamp Replacement For Lamp With Two Notches

Lamp Compartment Cover

Lamp Retainer Screw

Metal Sleeve

Lamp Assembly

Lamp Terminals

Light Slit

Lamp

Retainer

Screw

Lamp Holder

Lamp Channel

Lamp holder must

be flush against

bottom and the two

channel surfaces

indicated by arrows.

Lamp

Channel

Lamp Holder

Light Opening

All manuals and user guides at all-guides.com

LAMP REPLACEMENT, continued

Figure 2 Lamp Replacement For Lamp With One Notch

All manuals and user guides at all-guides.com

HACH COMPANY

WORLD HEADQUARTERS

Telephone: (970) 669-3050

FAX: (970) 669-2932

FOR TECHNICAL ASSISTANCE, PRICE INFORMATION AND ORDERING:

Call 800-227-4224

Contact the HACH office or distributor serving you.

www.hach.com techhelp@hach.com

In the U.S.A. –

Outside the U.S.A. –

On the Worldwide Web – ; E-mail –

toll-free

All manuals and user guides at all-guides.com

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