Operating Manual
PR-050823-0121 Version 161109 13 of 14
6 M
AINTENANCE AND
R
EPAIR
6.1 G
ENERAL INFORMATION
The operator is solely responsible for the installation, operation and maintenance of the coupling. Mann
Teknik AB accepts no responsibility for damages due to faulty installation, faulty handling, as well as
negligent or incorrect maintenance.
Maintenance tasks shall be performed only by trained personnel authorized by Mann Teknik AB. All
measures necessary for inspection, maintenance and repair must be carried out in accordance with the
national regulations of the country where the system is installed. Notice also our safety instructions (see
chapter 2.1).
6.2 M
AINTENANCE AND SERVICE INSTRUCTION
6.2.1 Maintenance plan
Depending on the application, the wear on the single components can be very different. Every operator has
to make a risk analyze before the installation of Dry Cryogenic Couplings in his process. Outcome of this risk
analyze should be a maintenance plan for the entire equipment. Mann Tek can give some support based on
the experience with other similar applications.
These are the service steps, recommended by Mann Tek:
1. Replace sealings, bearings and washers.
2. Replace worn or damaged components.
3. Do not use any grease
6.3 D
ISMANTLING
When the DCCoupling are taken out of service, the risk of liquid or gas spurting out should be taken into
consideration. Special protective measures such as personal protection equipment must therefore be
adopted.
How to dismantle:
Wear proper safety clothing consists of thermal gloves, full face shield
approved for cryogenic use and solid shoes capable to withstand cryogenic
spill whenever disassembling Dry Cryogenic Couplings from the installation
.
Make sure that the coupling is depressurized and empty.
Unscrew coupling (threaded connection) or bolts (flanged connection) with a wrench, fit for
purpose.
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