7100
040-551
2021-03
E
Operating Manual
Model/Series:
Number:
GB
Version:
Rev.
Page 11 of 14 ©
DEUBLIN
9
Trouble Shooting
This chapter provides the following information:
1. Which problem may occur?
2. What can be the cause of the problem?
3. How can you eliminate this problem?
9.1
Potential Causes for Errors and their Elimination
Risk of injuries due to applied line pressure
If you have to work on the rotating union and feed pressure of the medium is applied or
there is residual pressure in the piping system of the machine, the medium can escape
under pressure when releasing the connections. You and other people may suffer seri-
ous injuries.
Q
Ensure that no feed pressure is applied.
Q
Ensure that there is no residual pressure in the piping system.
Error
Potential causes
Elimination
Rotating union is
leaky after installation
Incorrect installation
1. Stop the machine.
2. Ensure that the connections are sealed ac-
cording to the manual “Installation”.
3. Ensure that all hoses are installed without
stress.
4. Ensure that all seal faces are clean.
Seal faces of the rotating
union are damaged
1. Pack rotating union.
2. Send rotating union to Deublin for overhaul/
service.
Rotating union is defec-
tive
Rotating union leaks
before the end of the
expected service life
Medium is contaminated
1. Stop the machine.
2. Drain medium.
3. Send rotating union to Deublin for overhaul/
service, if required.
4. Mount new filter.
5. Flush the piping system of the machine.
6. Refill with new medium.
Rotating union is not de-
signed for the respective
application
1. Ensure that the correct Deublin Rotating Union
is used.
2. Contact Deublin if required.
Rotating union runs
untrue or wobbles
Thread and/or concen-
tricity outside the admis-
sible tolerance.
1. Stop the machine.
2. Remove rotating union.
3. Manufacture new thread or flange.
4. Install rotating union.
Rotating union is mount-
ed incorrectly.
Warning
