Regada REMATIC ULR 1PA-Ex, Installation, Service And Maintenance Instructions, Page: 8 / 52

6 ULR 1PA-Ex, ULR 2PA-Ex
1.9 Under-guarantee and after-guarantee service
Our customers are provided with professional service of our firm in installation, operation, service,
maintenance, revision and help in troubleshooting for all our products.
Under-guarantee service is performed by the service department of the production plant, or by a
contracted service centre according to a written claim.
In case of occurring of any fault please let us know it and state:
•
type code
•
serial number
•
ambient parameters (temperature, humidity...)
•
duty cycle including frequency of switching
•
type of switching-off (position or thrust)
•
set switching-off thrust
•
type of fault - description of claimed fault
•
it is recommended to place also Installation certificate.
It is recommended to have after-guarantee service performed by the service department of the production
plant, or by a contracted service centre, with national laws.
1.9.1 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.
1.10 Operation conditions
1.10.1 Product location and operation position
EA may be installed and operated in enclosed locations of industrial facilities with no temperature and
moisture regulation, protected from direct climatic effects (such as direct sunlight). Moreover, special
“marine” versions may be used in waste water treatment applications, water management, selected
chemical applications, tropical environments and coastal areas.
Warning:
Actuator installed on the open place must be protected against a direct climate effects by shelter.
Installation and operation of EA is possible in
any position. Vertical position of output part axis
and with the control part above the valve is usual.
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.