ARCA Regler GmbH 10 Maintenance
Series 8C D / 6H D 21 / 2811.2018 / 1.0
10 Maintenance
10.1 Care
▪ Clean the stem (50) if necessary
– Clean the stem (50) of adhering dirt using a soft cloth
NOTICE!Never use sandpaper, since this will damage the sur-
face of the stem and reduce the lifetime of the stem sealing.
10.2 Maintenance
The valve is for the most part maintenance-free.
Nevertheless, the flange connections and the stuffing box seal must be
checked regularly for leaks. If necessary the work is to be carried out in
accordance with the chapter entitled [9] Commissioning. Depending on
the operating conditions of the valve, the operator is responsible for de-
fining appropriate checking and maintenance intervals.
10.3 Stem seal – Detail X
NOTICE
In general we wish to point out that all types of stuffing box seals
are subject to wear due to the respective operating conditions and
must be inspected and if necessary replaced at regular intervals.
Stuffing box seal with V-collar
The stuffing box seal with V-collar is not adjustable. In case of leaks the
entire seal set must be exchanged.
Stuffing box seal with packing
rings
The stuffing box seal with packing rings is adjustable. The stuffing box
screw (152) can be tightened if the stuffing box seal should leak.
The stuffing box screw should only be tightened to the extent that the
force of the actuator still allows jerk-free movement of the stem (50).
If the stuffing box screw (152) is tightened too much and the stem (50)
jams or jerks, the stuffing box screw (152) must be loosened again until
jerk-free operation is possible. Nevertheless, the sealing integrity must
still be guaranteed.
Packing rings can be added if no further tightening of the stuffing box
screw (152) is possible. See section entitled Addition of packing rings.
Addition of packing rings
Split packing rings can be temporarily added.
However, an exchange of the complete stuffing box seal should take
place as soon as possible.
▪ Pay attention to the chapter entitled [2] Safety
▪
WARNING!Drive the actuator to the end position and secure it
▪ Decouple and remove the actuator.
– Follow the actuator manufacturer's mounting instructions!
▪ Unscrew and remove the stuffing box screw (152)
▪ Carry out the work according to the chapter entitled [10.1] Care
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