Agromatic NEx Series, Assembly And Operating Manual, Page: 88 / 112

7.2 Maintenance work 7 Maintenance and repair
82 Actuators NEx, NEx-K, NEx-KA, NEx-V
7.2.7 Leak test
Check the inside of the actuator every 6 months for humidity.
1. Use a strap wrench to loosen the hood.
2. Unscrew the hood from the basic module and remove it.
3. Inspect the inside of the actuator and the hood for signs of humidity.
4. After the inspection and possibly required rectification, reinstall the hood
(see section “5.8 Installing the hood” ).
Humidity inside the actuator may have the following causes:
−
Condensate
Condensate may be caused by varying ambient temperatures or tempera-
ture changes within the actuator (due to long motor run times).
If this is the case, install an anti-condensate heater in the actuator (see
section
“5.7 Anti-condensate heater” ).
−
Damaged rubber sealing ring in the basic housing of the actuator
Return the actuator to Agromatic Regelungstechnik GmbH to have it re-
paired.
−
Leaking screwed cable glands/cable entries/filler plugs
Check whether the cable glands, cable entries or filler plugs are damaged
and whether the connection lines used have an outer diameter suitable for
the cable glands.
If the cable glands, cable entries or filler plugs are damaged, please con-
tact Agromatic Regelungstechnik GmbH (see section
“7.3 Spare parts” ).
−
Damaged actuator housing or hood
−
Replace the damaged hood (see section “7.3 Spare parts” ).
−
If the actuator housing is damaged, return the actuator to Agromatic
Regelungstechnik GmbH to have it repaired.
−
Heater does not work
−
Have a qualified electrician inspect the heating resistor and the con-
nection lines of the heater for correct function.
−
Replace the damaged heater if required (see section “ 7.3 Spare
parts” ).