Regada Rematic, Installation, Service And Maintenance Instructions, Page: 6 / 46

4 STR 0PA
It is recommended to have after-guarantee service performed by the service department of the
production plant, or by a contracted service centre. Serviceman makes the record about service
mission after warranty actions and sends it to the production company.
1.6.1 Lifetime of actuators
The lifetime of an electric actuator (EA) is at least 6 years.
EA used for closing mode (closing valves) comply with the requirements for at least
15,000 working
cycles (cycle C – O – C: for linear EA).
EA used for regulating/modulating operation (control valves) comply with the below stated numbers of
operating hours at the total number of 1 million start-ups:
Switching frequency
max. 1,200 [h
-1
] 1,000 [h
-1
] 500 [h
-1
] 250 [h
-1
] 125 [h
-1
]
Minimal lifetime expectancy – number of operating hours
850 1,000 2,000 4,000 8,000
Time of
net operation is min. 200 hours, max. 2,000 hours.
Lifetime at operating hours depends on loading and switching frequency.
Note : High switching frequency does not ensure better regulation. Setting of regulation parameters
should be therefore made with the inevitably necessary switching frequency needed for the process in
question.
1.7 Operation conditions
1.7.1 Product location and operation position
•
The assembly and operation of electric actuators in standard make can be on covered places of
industrial objects without the regulation of temperature, humidity and with protection against direct
exposure of climate influence (e.g. direct sun shine).
•
Electric actuators must be placed with access to the manual control wheel (2), Fig.2, to the cover
of control box, to control box, to cable glands.
•
Installation and operation of actuators is possible in either position. Common position is the one
with vertical position of exit part axis and control box above. Avoid to arrange the electric actuator
under the armature if possible.
Warning:
Actuator installed on the open place must be protected against a direct climate effects by
shelter, mainly from sunshine. In applications placed in an ambient of a relative moisture
above 80%, in external ambient under shed, it is necessary to change the preset thermostat
tempe25°C to +70°C by a PC and program to prevent switching off the heating
resistor.
1.7.2 Operation Environment
According to valid standard IEC 60 721-2-1, there are delivered these versions of electric
actuators:
1) Version „temperate“ for type climate temperate
2) Version „tropical“ for type climate tropical
3) Version „marine“ for type climate marine.
In accordance with IEC 60 364-1, IEC 60 364-5-51 and IEC 60 364-5-55 within valid edition the EA
have to resist external effects and operate reliably:
In the conditions of the following types of environment:
•
mild to hot dry with temperature in range -25
°
C to +55
°
C ..................................................... AA 7*
•
with relative humidity 10 to 100
%
, with occasional condensation, with max. contain of water
0,028 kg/kg of dry air, with temperatures stated above............................................................ AB 7*
•
with height above sea level 2 000 m, with barometric pressure range 86 to 108 kPa ............ AC 1*
!