DeZURIK
PMV P36C and P41C Positioners
used with DeZURIK Pneumatic Actuators
August 2012
Page 7
D10327
Installation
(Continued)
The outlet port is used for venting the positioner. All air from the positioner, actuator and I/P unit is
vented to atmosphere through this port.
Do not plug this port.
A high flow silencer or an exhaust pipe
can be connected to the outlet port to prevent foreign objects from entering and blocking the exhaust.
When using gas for supply, please contact. Port I should be plugged on the P41C. For single acting
operation, plug port C1 for increasing signal to OPEN, or C2 for increasing signal to CLOSE.
Note:
See Figure 4 for proper cam position.
With the I/P unit mounted, the positioner is supplied with air from port S and does not need an external
air supply. See pages 8–11 for more information on the I/P unit.
I/P Unit Electrical Connections
Electrical connection on I/P unit accepts 1/2" NPT or PG 13,5 cable gland.
See Figure 10E for wiring connections. Maximum recommended wire size is 16 AWG.
Front Cover and Indicator Cover
The front cover is secured to the pneumatic positioner with four captive screws and sealed with an O-
ring (1). This sealing system allows for complete sealing or draining of the positioner by changing the
position of the O-ring. The O-ring system is common to the Pneumatic positioner, I/P unit and
Feedback unit in the Valve Control System.
The O-ring can be looped over notches (2) in the front cover to allow for drainage. There are eight
locations on the front cover where the O-ring can be looped. See Figure 3.
Figure 3 – Front Cover and Indicator Cover
The indicator cover (3) is O-ring sealed and secured by a bayonet coupling. The indicator cover is also
used to secure the identification cover (4).
To remove the indicator cover turn it slightly counterclockwise until it loosens. Once loosened, the
identification cover and O-ring (5) can be removed. When installing the indicator cover and identification
cover ensure the O-ring is properly sealed.
