35
8. PACKING AND STORING
For inland freight, the actuators are unpacked. However, they should be transported by covered conveyances or
in transport containers.
For delivery abroad, the actuators should be packed, the type and design of package being adapted to the transport
conditions and the distance of the place of destination.
Upon receipt of the actuator from the factory, it is essential to check that no damage was caused during transport and
to compare the data on the actuator rating plates with those contained in the order and accompanying documentation. Any
discrepancy, defect or damage should be immediately reported to the supplier.
When the unpacked actuator is not immediately installed it should be stored at a dust-free location with a temperature
within the range of -25 °C to +50 °C and relative humidity up to 80% where there are neither aggressive gases nor vapours
and which is secured against the harmful effects of climatic conditions.
If the actuator is to be stored for a longer period than 3 years then, prior to commissioning, oil refilling should be made.
Any manipulation of the equipment at a temperature below -25 °C is forbidden. Storing the actuator out of doors or at a
location that is not protected against the effects of rain, snow or ice accretion should be avoided. Before putting the actua-
tor into operation, excessive slush should be removed. When unpacked actuators are to be stored longer than 3 months it
is advisable to place a bag with silica gel or another suitable dessicant in the terminal box.
9. CHECKING OF THE INSTRUMENT FUNCTION AND ITS LOCATION
Prior to installation, be sure that the actuator was not damaged during storing. A functional check of the electric-
motor can be made so that it is connected to the AC mains via a circuit breaker and started for short-time operation.
In this case, it is sufficient to check that the electric motor starts and turns the output shaft.
The actuator should be installed so that easy access to the handwheel, the terminal box and the control box is pro-
vided. It is also imperative to check that the installation complies with the Clause „Operating Conditions“. If another method
of installation is required due to local conditions, please consult the manufacturer.
10. ATTACHMENT TO A VALVE
Place the actuator on the valve so that its output pull-rod can be connected to the output pull-rod of the valve.
Attach the actuator to the valve and check the attachment by rotating the handwheel. Remove the terminal box cover and
wire the actuator, according to the internal and external circuit layouts.
11. ADJUSTMENT OF THE ACTUATOR WITH A VALVE
After fitting the actuator on the valve and checking mechanical connection, the assembly is set up and adjusted.
Setting-up and adjustment can only be carried out by a person with prescribed qualification. These works may not be
carried out without properly studying these assembly instructions. Adjustment is accomplished according to instructions
for the given type of electronics (DMS2, DMS2 ED) and outfit (manual, program).
12. OPERATION AND MAINTENANCE
Operation of rotary actuators results from process conditions and is usually limited to passing-on impulses to respective
functional tasks. In case of the electric current black-out, the controlled unit is shifted using the hand wheel. If the actuator
is connected in the automatic circuit it is recommended to install in the circuit components for manual remote control that
would provide for controlling the actuator even in case of the automatics failure.
The operator should pay attention to carrying out prescribed maintenance, the actuator being protected from harmful
influence of the surroundings and atmospheric effects which are not stated in the paragraph „Working conditions“. Another
duty is to ensure that excessive heating of the actuator surface does not occur, rating values are not exceeded and
excessive vibrations of the actuator are prevented.
Maintenance
Maintenance of the actuators consists in potential replacement of defective parts. Grease charge is stable for
the entire service life of the actuator.
