UNI-T UT3000 series Instructions d'exploitation télécharger pdf (Page 75)

6. Maintenance

page 75

Mercury Instruments

UT-3000-E_V2.11.docx

31.07.12

Analytical Technologies

6.9 Flow Adjustment (for qualified personnel only)

After replacement of components which may influence the flow (GoldTrap, filters, pump) it may

be necessary to readjust the flow. Select from the Service Menu Show Flow (see chapter 5.3).

6.9.1 Heating Flow Adjustment

Read Heating Flow

Select F1- Heating Flow. Allow to stabilize for approximately one minute. The actual flow will

be indicated on the screen and should be between 9.8 l/h and 10.2 l/h. In the right bottom corner

the pump voltage will be displayed. It should be in the range of 6.5 … 10.0 Volts, optimum

7-8 Volts.

Maintenance work on the opened and powered instrument must

only be done by qualified personnel.

Parts of the instrument interior are under high voltage. UV-beams

are produced inside the instrument. If safety regulations are

ignored physical and/or material damages could occur.

Adjust Heating Flow

If adjustment is necessary, open the instrument cover (read warning above !) and adjust by

slowly turning the horizontally positioned setting knob of needle valve 830-08. Turning the knob

to the left will decrease the voltage. Turn until voltage is in the desired range and observe if flow

is in the range of 9.7 … 10.3 l/h.

6.9.2 Sampling Flow Adjustment

Read Sampling Flow:

Select F2- Sampling Flow. Allow to stabilize for approximately one minute. The actual flow will

be indicated on the screen and should be between 39.7 l/h and 40.3 l/h. In the right bottom corner

the pump voltage will be displayed. It should be in the range of 6.5 … 10.0 Volts, optimum

7-8 Volts.

Maintenance work on the opened and powered instrument must

only be done by qualified personnel.

Parts of the instrument interior are under high voltage. UV-beams

are produced inside the instrument. If safety regulations are

ignored physical and/or material damages could occur.

Adjust Sampling Flow

If adjustment is necessary, open the instrument cover (read warning above!) and adjust by slowly

turning the vertically positioned setting knob of needle valve 830-06. Turning the knob to the left

will decrease the voltage. Turn until voltage is in the desired range and observe if flow is in the

range of 39.7 … 40.3 l/h.

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UNI-T UT3000 series Instructions d'exploitation Page 75