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11.5
Repairs
Repair work may only be carried out by qualified persons or persons with suitable
training with the manufacturer's consent and must strictly comply with the rules
set out in the maintenance manual for the components concerned.
The following maintenance notes must be observed:
Only use original manufacturer replacement or spare parts for repairs and to
replace parts subject to wear and tear. They must be requested from the spare
parts service.
11.5.1
Repair information
Important features of the technology and production process must be taken into
account when repairing the system:
•
•
•
•
•
•
•
11.5.2
Repairs of pressure vessels subject to approval inspection
Re-inspection and approval are required after pressure vessels that are subject
to approval have been repaired or changed. Welding may only be carried out by
approved welders with a valid welder's card.
L_151511_2
19.12.2019
Complete sealing of all devices and pipes.
Dryness and cleanliness of the entire system.
Use of welding methods causing only a minimum amount of dirt to collect in
the system.
Pipes bent on a pipe-bending machine only using refrigerator oil.
If repairing the piping system from your own stocks, we recommend that you
use a pipe with NBK surface quality (annealed and descaled, mechanically or
chemically descaled after annealing).
When carrying out repairs to piping systems, care should be taken to maintain
the original piping routes.
Only pipes of sufficient material quality, which are certified according to DIN
10216-2 should be used.
Notice
The responsible appointed body must be informed in advance.
► For example TÜV
Alarms
Repairs
107
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