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INSTALLATION
ENCLOSURE CLASSIFICATION
MOUNTING CONSIDERATIONS
MOUNTING TYPE AV3 AND AV4 POSITIONERS
ENCLOSURE CLASSIFICATION
3 - 2
4. Remove the 2 cover screws and positioner cover and examine
the interior for any loose components such as nuts, screws,
springs, etc. Check data on nameplate to be certain the positioner
type which was ordered for the application was received.
5. If positioner is suitable for the application and appears undam-
aged, replace cover and proceed with installation instructions.
The Type AV3 and Type AV4 positioners conform to NEMA 3R
when a ½-14 NPT street elbow (Fig. 3-1) is installed into the vent
hole on the housing. The elbow prevents water or other liquid from
entering the enclosure. The position of the elbow is related to the
mounting plane of the positioner in its service location. The elbow
must be positioned to face downward. The enclosure also meets
corrosion resistance requirements for NEMA 4X classification
(NEMA 250).
Choose a location for the positioner based on the following fac-
tors:
1. Access to the internal positioner housing - the mounting
location should provide enough room to remove the cover in order
to perform calibration and repair and replacement procedures
inside the positioner. Refer to Figure
sions.
2. Allow room for linkage to the actuator - the mounting posi-
tion should be such that a practical linkage arrangement can be
made between the positioner and the actuator for full range travel.
The Type AV positioner can be used with double-acting or sin-
gle-acting actuators. Mounting and external dimensions are
shown in Figure 3-1. Figure
ment using a mounting kit (part number 5327321_ ). Refer to Fig-
ure
9-2
for an exploded view and complete parts list of kit. If using
the positioner with a rotary actuator, the positioner can be directly
connected to the actuator, as shown in Figure 3-3.
NOTE: If the actuator is equipped with a Type AV positioner as
ordered, verify that all the connections are secure and make any
adjustments as required.
3-1
for positioner dimen-
3-2
shows a typical mounting arrange-
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Troubleshooting
