Specifications

SECTION III. REVERSE OPERATION
3-1. OPERATIONAL DESCRIPTION. In reverse related to the signal. A falling signal air pressure
acting positioners, the piston and piston rod operate. raises the piston and an increasing signal air pressure
the same as when set up for direct acting (Figure lowers the piston.
l-2). The cam is reversed front to back and the
cylinder air hoses are exchanged. These alterations
cause supply air to be directed to the top of piston 3-2. PROCEDURES FOR REVERSING
when signal air pressure is increased and to the
OPERATION. To reverse the operation of the
bottom of piston when signal air pressure is cylinder, refer to Figure 3-1 and use the following
decreased. In this case, piston movement is inversely procedures.
I
ITEM DESCRIPTION
1
2
3
4
5
6
I
8
9
10
11
12
13
14
15
Linkage Lever
Cl&s
Stroke Adjustment
Lock Screw
Pivot Screw
CL%”
Cam Mounting Bracket
Spring Nut
Set screw
Upper Cylinder Hose
Upper Cylinder Head
Lower Cylinder Hose
Lower Cylinder Head
Gland Cap
Clevis Head
Piston Rod
Figure 3-1. Reverse Operation