Metrohm 700 Dosino - Manual (Page 5)

Contents
700 Dosino, Instructions for Use
1 Overview _____________________________________________1
1.1 Areas of application ____________________________ 1
1.2 Application possibilities _________________________ 2
1.2.1 The Dosino as a system component ...........................3
1.3 Construction of the Dosino burets ________________ 3
1.3.1 The 700 Dosino dosing drive.......................................3
1.3.2 The 710 Dosing unit ....................................................4
2 Setup _________________________________________________5
2.1 700 Dosino dosing drive _________________________ 5
2.1.1 Connecting to a control instrument..............................5
2.1.2 Safety information .......................................................6
2.2 710 Dosing unit ________________________________ 7
2.2.1 Mounting the dosing units ...........................................7
2.2.2 Placing the drive on the 710 Dosing unit .....................9
2.2.3 Problems in attaching the dosing drive?....................10
2.2.4 Removing the dosing drive from the 710 Dosing unit 11
2.3 Dismantling the dosing units ____________________ 12
2.3.1 Opening the housing .................................................13
2.3.2 Centering tube and glass cylinder .............................14
2.3.3 Centering tube and ETFE cylinder ............................16
2.4 Assembling the dosing units ____________________ 17
2.4.1 ETFE cylinder............................................................20
2.5 Dosino and dosing unit setup ___________________ 21
2.5.1 Support mounting (6.2047.010).................................21
2.5.2 Double bottle holder (6.2055.100) .............................21
2.5.3 727 Ti Stand (2.727.0XXX) .......................................22
2.5.4 Direct mounting on canisters.....................................22
3 The Dosino in practice_____________________________ 23
3.1 Air bubbles are (almost) inevitable _______________ 26
3.2 Reagent exchange _____________________________ 27
3.3 Cleaning and maintenance ______________________ 28
3.3.1 Cleaning the cylinder and piston ...............................28
3.3.2 Cleaning the stopcock washer and distributor disk....29
3.4 Troubleshooting / Problems_____________________ 31
3.4.1 Dosino buret..............................................................31
3.4.2 Dosing unit ................................................................33
3.4.3 Dosing drive ..............................................................35
3.4.4 Dosing.......................................................................35