horiba OCMA-500, Инструкция по эксплуатации, Страница: 119 / 141

Maintenance
99
Replacing the water filter
If sample water with a large amount of suspended material such as emulsifying substances is
measured repeatedly, the water filter will clog and the following problems may occur.

Cell filling becomes impaired and the liquid level in the extraction tank stops decreasing

The measurement time grows longer

Measurement accuracy becomes poorer
If any of these problems occur, the filter element of the water filter must be replaced.

Maintenance interval guideline
If it takes longer than 60 seconds from the start of measurement until settlement of a
measured value

Items required

New filter element (accessory or optional)

Measuring cylinder (20 mL) or measuring syringe (20 mL, optional): 1 (for solvent)

Clean solvent S-316 (optional)

Tissue paper

Replacement procedure
Note
Observe the precautions below when working.

Do not pull out the filter block with the joint attached. The joint may come off or be bent.

Install the water filter correctly. If poorly installed, water content in the solvent may enter the
measurement cell and an abnormal measured value alarm will occur.

During installing the filter block after replacing the water filter, attach the joint firmly to prevent
liquid leakage.
CAUTION
Chemical hazard (solvent S-316)
Inhalation or accidental ingestion of a large amount of solvent S-316 may be harmful.
Observe the following rules when handling:
• Ventilate the work area sufficiently.
• Wear a protective mask and protective gloves.
• Wash hands well after handling the solvent.
Take care not to pinch your fingers when opening or closing the right cover.
During closing the right cover, do not release your hand until you hear a click sound.