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14

4

Elimination of disturbances

The display does not respond to keys being pressed, the display is dark.

The internal program is disturbed
(e.g. by electrostatic loading or a
mains overvoltage

Switch the device off, and switch it on again after 10 seconds.

TITRONIC

â

 97  and 

 

TitroLine 96:

The contrast of the display was
maladjusted.

Adjust the contrast using the knurled screw right at the bottom.

The stirrer does not work.

The connection contacts are dirty.

Clean contacts.

The dosing unit is not properly filled.

The reagent bottle is empty.

Replace or refill the reagent bottle.

The hose is not immersed deeply
enough in the reagent bottle.

Immerse the hose deeper in the bottle, or fill up reagents.

The hoses on the dosing unit were
mixed up when screwed on.

Change hose screw connections:
The slightly higher valve leads to the burette tip.

The dosing unit is not properly locked.

Lock the dosing unit by a quarter rotation at the lower position.

Air bubbles in the titration system

The valve is defective.

Replace dosing unit.

The hose connections
are not tight.

Check: Has the hose been pulled out of threaded connection?
Screw hose manually on.
Replace hoses including threaded connections.

The burette tip leaks after use.

Dirty valve does not close.

Flush dosing unit, replace solution.

When setting on a new dosing unit, the piston rod is not properly pulled in, the device rattles.

Inclined piston rod.

Set on piston rod vertically again.

Titration solution is not titrated / dosed.

The dosing unit is not properly filled.

Perform initial filling.

The dosing unit is not
properly locked.

Lock dosing unit in the lower position by a quarter rotation
to the right (

&

 Fig. 4 or. Fig. 10).

The hose or the burette tip are
wrinkled or blocked.

Check clear passage through hose and burette tip,
replace if necessary.

The system contains air bubbles.

Please refer to „Air bubbles in the dosing system“.

Undissolved parts in the titration solution.

Filter or replace titration solution.

The hoses of the dosing unit were
mixed up when screwed on.

Change hose thread connections:
The slightly higher valve leads to the burette tip.

The data transfer to the printer / computer does not work.

Set transfer parameters properly.

Settings: 4800 baud, 7 data bits, no parity, no handshake.

Are you using a suitable cable?

Use a TZ 3095 for the printer or a  TZ 3096 / 3097 for the PC.

Are the cables properly connected?

The 

lower

 socket is the RS-232-C interface.

Check cable connection, are the screws on the
PC side tightened?
PC: „COM 1“ and „COM 2“ possibly were mixed up!

Defective cable.

Replace cable.

Malfunction of printer / computer.

Switch the devices off, switch them on again after 10 seconds.

Содержание TITRONIC 96

Страница 1: ...C 97 C O N T E N T S PAGE 1 Warning and safety information 10 2 Maintenance and care 11 3 Replacing the dosing unit installation and dissambly 12 3 1 Replacing the dosing unit of the Piston Burette TI...

Страница 2: ...that a safe operation is no longer possible the packaging is damaged the titration unit shows visible damages the titration unit does not operate properly liquid has penetrated into the titration unit...

Страница 3: ...o so remove the dosing unit chapter 3 Fig 1 to 4 resp Fig 7 to 10 If humidity can actually be found there one can conclude that the piston in the cylinder is no longer tight Check the hoses the thread...

Страница 4: ...he dosing unit by rotating it to the left anticlockwise Fig 1 Keep both keys of the manual key button depressed Fig 5 Fig 6 furthermore switch the titration unit on This somewhat awkward way of procee...

Страница 5: ...ther the time required for frequent changes is not more expensive than the acquisition of another dosing unit As a principle and in the case of all piston burette systems a substitution of the titrati...

Страница 6: ...rty valve does not close Flush dosing unit replace solution When setting on a new dosing unit the piston rod is not properly pulled in the device rattles Inclined piston rod Set on piston rod vertical...

Страница 7: ...6 pH electrode only for TitroLine 96 TZ 1509 Bottle set for titration agents TZ 2008 Bottle set on unit with S 40 thread for reagent bottles e g Merck make TZ 2005 Bottle set on unit with GL 45 thread...

Страница 8: ...3455 Seal o ring 21 x 1 5 mm TZ 3500 Valve 20 ml Piston Burette TITRONIC 97 50 TZ 3150 Glass cylinder 50 ml TZ 3250 fitted with piston TZ 3450 TZ 3458 Seal o ring 33 x 1 5 mm TZ 3510 Valve 50 ml Orde...

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