Metrohm 850 Professional IC AnCat MCS User Manual download pdf (Page 111)

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5 Troubleshooting

850 Professional IC – AnCat – MCS

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101

Problem Cause Remedy

Eluent – Evaporation of the

organic solvent in the elu-

ent.

Check the eluent bottle attachment (see Figure

13, page 29).

Peak areas lower

than expected

Sample – Leak in the sam-

ple path.

Check the sample path.

Sample – Blockage in the

sample path.

Check the sample path.

Sample – Sample loop not

(completely) filled.

Prolong the sample transfer time.

Sample – Gas bubbles in

the sample.

Use the sample degasser (see Chapter 2.13,

page 40) (if available).

MCS – not connected. Connect the MCS.

Peristaltic pump –

insufficient or no

delivery rate

Peristaltic pump – contact

pressure too weak.

Correctly set contact pressure (see "Set flow

rate", page 54).

Peristaltic pump – filter

blocked.

Replace the filter (see Chapter 4.12.2.2, page

95).

Peristaltic pump – pump

tubing defective.

Replace pump tubing (see Chapter 4.12.2.1,

page 94).

Very noisy baseline High pressure pump – con-

taminated pump valves.

Clean pump valves (see Chapter 4.5.2, page

73).

Eluent – Leak in the eluent

path.

Check the eluent path.

Eluent – Blockage in the

eluent path.

Check the eluent path.

High pressure pump –

defective piston seals.

Replace piston seals (see Chapter 4.5.2, page

73).

MCS –

CO

2

adsorption cartridge

exhausted.

Replace CO

2

adsorption cartridge (see Chapter

4.13.1, page 96).

Pulsation damper not con-

nected.

Connect the pulsation damper (see Chapter

2.12, page 38).

Pulsation damper not con-

nected.

Connect pulsation damper (see Chapter 2.12,

page 38).

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