DeZurik PMV P36C Руководство - Страница 7

Просмотреть онлайн или скачать pdf Руководство для Позиционеры клапанов DeZurik PMV P36C. DeZurik PMV P36C 19 страниц. For pneumatic actuators

DeZURIK

PMV P36C and P41C Positioners

used with DeZURIK Pneumatic Actuators

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.

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.

August 2012

Page 7

D10327