18.
Maintenance
After maintenance, check multi-turn actuator for damage to paint finish. If
damage to paint-finish has occurred after mounting, it has to be touched up
to avoid corrosion. Original paint in small quantities can be supplied by AUMA.
AUMA multi-turn actuators require very little maintenance.
Precondition for reliable service is correct commissioning.
It is also very important that the O-rings at the covers are placed correctly
and cable glands fastened firmly to prevent ingress of dirt or water.
The following instructions apply to all electric AUMA actuators of type
ranges SAI 6 – SAI 100 and SARI 6 – SARI 100, used in Inside Contain-
ment of nuclear power plants.
Visual inspection
It is recommended that a visual inspection for grease leakage is performed
on each actuator at least every 2 years.
Functional test
Every 5 years, the performance of each actuator should be tested in detail
and the results recorded for future reference.
We recommend additionally:
.
.
.
If rarely operated, perform a test run about every 6 months. This ensures
that the actuator is always ready to operate.
Approximately six months after commissioning and then every year check
bolts between actuator and valve/ gearbox for tightness. If required, tighten
applying the torques given in table 2, page 8.
For multi-turn actuators with output drive type A: at intervals of approx. 6
months from commissioning press in
re se
at the grease nipple with grease gun (quantity see table 3, page 9).
26
Multi-turn actuators SAI 6 – SAI 100 / SARI 6 – SARI 100
for valve automation Inside Containment in nuclear power plants
Operation instructions
