Hach 2100N Instruction Manual page 68

Tài li u sưu t m c a Trung Sơn - www.tschem.com.vn - 028.3811.9991 - info@tschem.com.vn
SECTION 7,
continued
Note: Do not touch the lamp; oil
from skin will cause damage. Clean
the lamp with alcohol if necessary.
Figure 24 Lamp Replacement
Tài li u sưu t m c a Trung Sơn - www.tschem.com.vn - 028.3811.9991 - info@tschem.com.vn
PRECAUÇÃO
Quando a Lâmpada estiver acesa e a proteção de lâmpada estiver removida, use
protetor ocular.
2. Remove the cover over the lamp compartment (see Figure 24). Squeeze the
latch tab together, and pull out on the cover.
3. Use a small screwdriver to loosen the two screws securing the lamp leads in
the lamp terminal block. Pull the leads free.
4. Remove the two Phillips-head screws securing the lamp holder in the
instrument (upper left-hand corner and lower right-hand corner). Remove the
entire lamp assembly.
5. Mount the new lamp assembly in the instrument.
6. Insert the lamp leads under the clamping plates in the lamp terminal block.
Lamp leads are not polarized and therefore may be placed in either position
on the terminal block. Tighten the terminal block screws.
7. Replace the lamp compartment cover, and connect the power cord to the back
panel receptacle.
8. Recalibrate the instrument as described in Section 3.2.4 on page 39. New
turbidity stand-ards must be prepared (refer to Section 3.2.2 on page 37 and
Section 3.2.3 on page 38).
68