Buchi DuMaster D-480 User Manual download pdf (Page 169)

Operation Manual D-480 ©BÜCH Labortechnik AG

8 - Maintaining the instrument 169

Maintenance work to be performed by the customer

Note

Observe that the maintenance or replacement times indicated here are greatly dependent on the

respective sample matrix. All intervals and figures indicated are only examples and by no means

guarantee service life of consumables or wear and tear parts.

Maintenance work to be performed by the customer

The following table lists the maintenance work that you can perform yourself as customer and the

intervals for these tasks.

Maintenance work

Interval

See ...

Replacing the ash crucible Depending on the sample matrix,

but not later than max. 400

measurements.

Replacing the ash crucible.

Instrument and supply lines leak

test

At least every 2 months.

Performing a leak test (on

page 242).

Checking hard disk capacity and

relocating data if necessary.

Backup every week, relocate data

to disk as required.

Starting the database

backup (on page 96).

Calibration When the daily factor is no longer

between 0.9 and 1.1, but not later

than every 2 years.

Performing calibration.

Clean ball valve, possibly

replacing seals.

Every 1500 analyses. Ball valve maintenance.

Replace sealing elements (o-

rings, quad rings, half shells)

As required.

When to replace sealing

elements (on page 194).

Removing sealing elements

from grooves (on page 195).

Cleaning the carousel As required. Removing, cleaning and

installing the carousel.

Check/clean quartz glass bridge,

check o-rings at the same time

Whenever you change tubes. Removing, cleaning and

installing the quartz glass

bridge.

Replace reaction tubes

(combustion tube / post

combustion tube / reduction tube),

replace fillings, check plugs and o-

rings at the same time

Replacement intervals, see

Options > Maintenance >

Intervals in the operating

software.

Removing/installing and

conditioning the reaction

tubes.

Emptying and filling reaction

tubes.

Check/replace drying tube; check

o-rings at the same time

Daily visual inspection

Removing and installing

the drying tube (on page

236).

Filling the drying tube (on

page 234).

Check supply gases for correct

intake pressure and sufficient

volume

Before every series of analyses.

Gases and chemicals to be

provided (on page 108).

Recommendation

Taking out a service contract for full annual maintenance saves time and money. Contact your service

office for details.

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Buchi DuMaster D-480 User Manual Page 169

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