Samson EB LTR 43 - Malfunction; Detecting and Rectifying Errors; Carrying out Emergency Measures

8-1
EB|LTR|43_EN
May 2023 edition
Subject to technical changes
Malfunction
8 Malfunction
When rectifying the faults, chapter “1 Safety instructions and safety measures” must be observed.
8.1 Detecting and rectifying errors
Type of fault Cause Measure Note
Leaks in the passage Wedge-lock-washer not in the
closed position
Check the end stops on the actuator and/
or gear (sealing paint undamaged)
Contact SAMSON LEUSCH through the
nearest SAMSON offi ce for further
measures
Note 1: Check the position marking on
the shaft, see Chapter 3.
Note 2: Check the position display on the
actuator
Note 3: Rinse the butterfl y valve and
pipes
Seat/seal ring damaged Replace the seat/seal ring Contact SAMSON LEUSCH through the
nearest SAMSON offi ce with regard to a
repair kit
Leaks in the fl ange seal Seal damaged Replace the seal Use a suitable seal, see Chapter 4.4
Insuffi cient surface pressure
on the seal
Tighten the fl ange screws Observe the maximum permissible
tightening torques
Flange sealing surface
damaged
Rework the fl ange sealing surface Coordinate rework with SAMSON
LEUSCH
Leaks in the shaft sealing
(packing)
Packing worn Tighten the stuffi ng box nuts Observe the max. permissible tightening
torques, see Chapter 15.2
Packing insuffi ciently
preloaded
Tighten the stuffi ng box nuts Observe the max. permissible tightening
torques, see Chapter 15.2
Packing defective Replace the packing See chapter 9.3.3
Leaks in the body cover Seal insuffi ciently preloaded Retighten the bonnet screws. Observe the max. permissible tightening
torques, see Chapter 15.2
Seal defective Replace the seal. See chapter 9.3.3
Diffi culty of actuator shaft
movement
Packing improperly preloaded Release and and realign the gland Depressurise the butterfl y valve, see
Chapter 10
Insuffi cient tightening torque Check the pneumatic energy.
Actuator insuffi ciently
supported
Use construction measures to support the
weight of the actuator
Dirt in the bearing area Contact SAMSON LEUSCH through the
nearest SAMSON offi ce
Actuator functionality limited Actuator or control faulty Contact SAMSON LEUSCH through the
nearest SAMSON offi ce.
In the case of faults that are not listed in the table, contact the After Sales Service at SAMSON LEUSCH. In this case, contact the nearest
SAMSON offi ce.
8.2 Carrying out emergency measures
The system operator is responsible for emergency measures. In
the case of an actuator fault, observe the measures in Chapter
8.1.
In case of an actuator fault:
Ö Close off the pipe upstream and downstream of the actuator
so that no medium fl ows through the actuator.
Ö Troubleshoot the error, see chapter 8.1.
Ö Rectify the fault that can be fi xed as indicated in the instruc-
tions provided in this installation and operating manual.
Contact SAMSON LEUSCH through the nearest SAMSON of-
fi ce for additional errors.
Recommissioning after faults
See chapter 6