3.3.3 Operating the manual/
automatic transfer
In normal operation, the manual/automatic
transfer runs in automatic mode, during
which the positioner supplies air to the
pneumatic actuator.
To switch to manual mode, twist off the plas-
tic cap. Turn the switchover pin counter-
clockwise and pull it (approx. 1 cm) out of
the bayonet lock. The compressed air is then
routed directly from the supply pressure reg-
ulator or from the air supply network to the
pneumatic actuator.
To switch back to automatic mode, push in
the switchover pin again. To do this, insert
the lock pin completely into the bayonet and
lock it. Replace plastic cap and tighten.
3.4 Filter with filter receptacle
The Types 4708-83, 4708-84, 4708-86
and 4708-87 Air Filters are designed for
universal use. They have either G ¼ or
¼-18 NPT threaded connections.
3.4.1 Mounting the air filter
Mount the air filter directly into the pipeline,
while ensuring the direction of flow (printed
on the device) is kept.
The filter receptacle must face downwards to
function correctly.
20
EB 8546 EN
Pneumatic connections
Fig. 17 · Cap and switchover pin
Fig. 18 · Types 4708-83 to -87 Air Filters
Summary of Contents for 4708-1152
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