HDK-MT350_EN_06
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Other maintenance work
The maintenance tasks described in the following refer to the components with
little or no wear. These components are replaced as required. You will find the
necessary spare parts with the order numbers in the
on Page 68.
Danger!
There is a very considerable risk of personal injury, when carrying out
work on the activated and pressurised dryer.
Maintenance tasks should only be carried out with the system switched
off and depressurised.
Note:
We recommend Toolkit-1 for the following tasks.
Replacing upper check valves
The check valves in the top check valve block are subject to minimal wear.
Possible signs that the valves need replacing:
The volume of regeneration gas increases audibly.
The dewpoint changes depending on the type of adsorbing tower.
The pressure-built up phase is irregular.
Unsatisfactory dewpoint values.
Needle valve (VN)
Check
valve
RV1/RV2
DN12
Check
valve
RV1/RV2
DN 6
Valve
Check valve block