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Charged Aerosol Detectors

Corona Veo and Corona Veo RS

Operating Instructions Page 99

7.4 Operating Problems

The following table provides information about common operating problems that might

occur with an UltiMate 3000 system and lists probable causes, as well as remedial actions.

For more information, also see the manuals for the other modules of the UltiMate 3000

system.

Problem Probable Cause Remedial Action

No information appears

on the detector display.

The detector is not connected to

the main power supply.

Connect the power cord.

The power is turned off. Turn on the detector power.

The screen brightness is not

adjusted correctly.

Adjust the brightness (→ page 49).

The fuses have blown.

Replace the fuses (→ page 118). If

the replacement fuse(s) fail, there is

a fault with the power supply.

Contact Service.

An error occurred with the

electronics.

Contact Service.

Problems during control

under Chromeleon

There is no connection between

the detector and the Chromeleon

computer.

Check the USB cable and

connection to the computer.

The USB port on the computer is

not ready for operation.

Check the USB port on the

computer. It must comply with the

USB 1.1 or 2.0 standards.

The Chromeleon PC is very slow. Verify that the system requirements

are met (→ page 77).

No liquid flow The system is leaking. Find and eliminate the leak.

There is a gas bubble in the

autosampler flow path.

Perform a wash cycle

(→ Autosampler Manual). Non-

degassed wash solution is used.

Degas the wash solution

(→ Autosampler Manual).

For further causes, refer to the

Operating Instructions of your

pump.

The system has very high

backpressure.

Flow-path components in the

system (capillaries, filter, and

column) are blocked by

precipitate, or capillaries are

damaged by bending.

Check the capillaries in the system

step by step from the detector to the

pump, remove the blockage, or

replace the capillaries.

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