Samson EB 8315 EN, Инструкция по монтажу и эксплуатации

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EB 8315 EN 9-3
Servicing and conversion
9.1 Periodic testing
Depending on the operating conditions,
check the actuator at certain intervals to pre-
vent possible failure before it can occur.
Plant operators are responsible for drawing
up an inspection and test plan.
Our after-sales service can support you in
drawing up an inspection and test plan for
your plant.
9.2 Preparation for servicing
or conversion work
1. Lay out the necessary material and tools
to have them ready for the intended
work.
2. Put the actuator out of operation (see the
'Decommissioning' section).
9.3 Exchanging the actuator
bonnet
Fig. 9-1 shows the different combinations
(actuator for on/off service, actuator with
positioner and limit switch). The Type 4740
Limit Switch is mounted on the cover of the
actuator. The Type 3724 Positioner is mount -
ed without actuator cover directly to the ba-
sic module of the actuator.
If the actuator is to be replaced or upgraded,
remove the bonnet (cover, positioner or limit
switch) of the actuator.
Tip
Limit Switch
Type 4740
Positioner
Type 3724
Fig. 9-1: Type 3379 Actuator combined with Type 4740 Limit Switch and Type 3724 Positioner