
38
GB
7. Maintenance, cleaning and recalibraon
This covers stripping the unit to enable simple repairs and the i ng of recommended
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spare parts to be carried out.
7.3 Cleaning
Cleaning the unit and checking the liquid levels.
Oil operaon
Keep the system clean and free from spilt oil. Wipe out the oil cups under the gauge
stands as necessary. Do not use any cleansing solvents as they may damage the seals.
Ensure that the reservoir contains su cient liquid to carry out any calibraons required.
ffi
If necessary top up the reservoir with the same liquid that is already being used. Do not
mix various types or brands of liquid in the pressure balance.
If the oil in the system becomes dirty, use the screw pump to lush through the clean oil
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with a drain screwed in the gauge stand. (An angle connecon is suitable). The screw
pump should be turned fully clockwise before starng.
Wear safety goggles!
Protect eyes from lying parcles and liquid splashes.
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For informaon on returning the instrument see chapter 9.1 "Return".
7.4 Recalibraon
Factory or
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DKD/DAkkS Cer icates:
We recommend that the instrument is regularly recalibrated by the manufacturer, with
me intervals of 5 years. The basic se ngs will be corrected if necessary.
7.4.1 Factory overhaul and re-cer icaon of pressure balances maintenance of
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accuracy.
The accuracy of a pressure balance depends primarily on the efecve area of the
piston unit and on the weights applied to the piston. The efecve area of the piston unit
can be af ected by wear of the unit. This is generally caused by contaminaon of the oil
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in the pressure balance by foreign ma er from instruments being calibrated, by water, or
by chemicals from instruments, or by rust or corrosion caused by contaminants.
Manual M
LDW-HK
odel
LR-
Cal
Содержание LDW-HK
Страница 16: ...16 GB 3 Speci ica ons f Side view Dimensions in mm without masses Front view Manual M LDW HK odel LR Cal...
Страница 21: ...21 GB 4 Design and func on G D C F E H J K Sec oned view of screw pump Manual M LDW HK odel LR Cal...
Страница 46: ...46 GB Manual M LDW HK odel LR Cal...
Страница 91: ...91 No zen Notes Anleitung Modell LDW HK Druckwaage Kolbenmanometer LR Cal...