136
2.7
Exchangeable head (WA)
21
20
19
18
Fig. 9
12) TZ 2003 - drying tube
13) TZ 3802 - threaded cap with borehole GL 45, incl. adapter with 2 openings for drying tube and suction hose
14) TZ 3873 - dosing hose without dosing tip and holding bracket, or
TZ 3874 - dosing hose with dosing tip and holding bracket
15) TZ 3803 - 1 litre reagent bottle, brown
16) TZ 3900 - UV protection
17 TZ 1507 - plastic drip-down tubule
18) TZ 3000 - 3/2-way valve
19) TZ 3801 - valve cover lid
20) TZ 3872 - connection hose
21) TZ 3871 - suction hose
Installation of the Interchangeable Unit
2.7.1
Fig. 9 shows a completely assembled interchangeable unit.
1. Remove the valve with the attached hoses from the pack, and then push it on the valve support until it
snaps in position.
2. Slip on the valve cover lid on the valve as is shown (Fig. 9).
3. Insert the TZ 3872 connection hose in the threaded hole provided in the burette cylinder and tighten
it manually.
4. Insert the TZ 3871 suction hose into the threaded opening of the GL 45 or S 40 adapters and tighten
it manually.
All the other hoses are already preassembled.
12
13
14
15
16
17