B75-1B20-KOG Datasheet, PDF (4/8 Pages) Magnetrol International, Inc. – Non-Bleed Switch For Liquid Level Switches

Enclosing tube
Upper shoulder
screw
Frame screw
3.0 Reversing Pilot Action
Reverse position
Direct position
Fall-out stop
Magnet Tab
Actuator
link
Housing
base
All Series K Pneumatic Switch Mechanisms are shipped
from the factory in the direct (close) position at high level.
They can be field modified for the reverse (open) position
by following the steps below:
1. The action can be reversed by first removing the upper
shoulder screw from the actuator link and moving it from
the direct (D) position to the reverse (R); refer to Figure 3.
2. Loosen the screw that positions the spring bracket and
move it from the direct (D) position to the reverse (R) posi-
tion; refer to Figure 4.
3. Fasten screw securely.
Enclosing
tube nut
The switch is now setup for reverse action.
Figure 3
Locking screw
4.0 Locating Air Line Connection
Caution: Instrument is designed for dry air/gas service.
The housing base may be rotated a full 360° for your con-
venience in connecting the air supply.
1. Loosen both the special locking screw above the enclosing
tube nut and the frame screw. Refer to Figure 3.
2. Rotate the entire base to the desired position.
3. Tighten both the locking screw and the frame screw.
Direct
position
Spring
bracket
Enclosing tube
Fall-out spring
4.0.1 Remove complete mechanism
1. Disconnect air line from air line adapter.
2. Loosen both the special locking screw, above the enclosing
tube nut, and the frame screw approximately 3 to 4 turns.
Refer to Figure 3.
3. Lift the entire base straight up and off the enclosing tube.
Reverse
position
1_{⁄4" NPT Air line}
inlet connection
1_{⁄4" NPT Outlet}
connection
Figure 4
2
42-686 Series K Pneumatic Switch Mechanism