Flowserve PM15 Pneumatic Valve Positioner - Manual (Page 2)

1. STORAGE INSTRUCTIONS
PM15 Positioner Storage and Handling Procedures
PM15 positioners are precision instruments which should be stored
and handled accordingly to avoid problems or damage.
Warehouse Storage
Stored in original shipping containers, units should be stored in an
environmentally controlled area, i.e., clean, cool (15–26°C, 60–80°F)
and dry, out of direct sunlight or weather exposure.
Field Storage
NOTE: Once the air supply to the positioner is connected and turned on,
internal air bleed will prevent the ingress of moisture and protect the unit
from corrosion. It is recommended that the air supply be left on at all
times.
• If units are installed immediately, turn, and leave on, the air
supply.
• If positioners must be stored outdoors, tighten all covers which
may have loosened in shipment, make sure all open enclosure
entry points are sealed.
Positioners should be wrapped and sealed air and watertight with
desiccant inside the plastic, units should be securely covered with an
opaque cover and not exposed to direct sunlight, rain or snow.
Units should have all ports sealed and be protected from direct
exposure to weather. For long term storage (>1 month) or overseas
shipment, units should be protected with plastic and desiccant.
Potential Damage to Mechanism
When units are stored in hot, humid climates, the daily
heating/cooling cycle will cause air to expand/contract and be drawn
in and out of the positioner housing.
Dependent on the local temperature variations, humidity and dew
points and time in storage, condensation could occur and accumulate
inside pilot valve causing erratic operation or failure due to water and
corrosion. The potential for condensation damage is especially high in
southern climates and aggravated if units are exposed to direct
sunlight.
For further assistance, please contact your nearest Worcester
distributor.
2. INSTALLATION
Before mounting the positioner, the relationship of the actuator to the
valve must be determined. The actuator can be mounted inline or
cross-line to the valve. In addition, the actuator can be mounted right-
side-up or inverted. If a spring-return actuator is used, the actuator
can be set up to fail with the valve closed or with the valve open. This
gives the end user a total of eight possible set-up configurations.
A. MOUNTING GUIDE
The following notes pertain to Positioner Mounting Guide on next
page:
1. “Inverted” Actuator Position and “Cross-Line” Actuator
Mounting applies to sizes 10-20 39 Series actuators only. On
sizes 25 and larger, the output shaft is square, which allows
for the coupling to be indexed 90˚ to the actuator shaft.
Normal actuator position means that the actuator is mounted
“right-side-up”.
2. For Spring-Return actuators only. “Fail-Open” actuators have
a “9” in position 3 of the ordering code.
3. To change cam to Reverse-Acting, remove and reinstall
upside down (see Section 7).
4. For Double-Acting actuators only. Normal hose positions refer
to those described in Section 2.C, Connections.
B. MOUNTING INSTRUCTIONS
Mounting instructions for a Direct-Acting PM15 to a Spring-
Return or Double-Acting 39 Actuator:
The most common installation configuration is with the actuator
mounted inline, direct-acting, and with spring-return set for fail-
closed. Direct-acting means that as the signal increases, the valve
travels in the open direction.
1) Close the valve/actuator assembly if it is not already closed
(fully CW).
2) Remove the position indicator, if any, from the actuator shaft.
3) Attach the mounting bracket to the top of the actuator such
that the indicating scale is upright and on the same side of
the actuator as the actuator nameplate. Use four (4) screws
and lockwashers supplied with mounting kit.
4) Place coupling on actuator shaft. DO NOT tighten set screws
at this time.
5) Install the indicating arm and locknut on the coupling such
that the end of the arm points downward.
6) Place the positioner on the bracket so that the actuator
nameplate and the side of the positioner with the zero
adjustment are on the same side. Positioner is mounted to
bracket using mounting adapter and screws (5).
2 PM15 Pneumatic Valve Positioner Installation, Operation and Maintenance Instructions WCAIM2016
Flow Control Division
Worcester Controls
5
Installation