Mec ME 225 PowerTorq Series User manual

ME225
PowerTorq Series
Pneumatic Actuator Instruction Manual
WARNING
Failure to follow these instructions or to
properly install and maintain this
equipment could result in an explosion
and/or re causing property damage and
personal injury or death.
Install, operate and maintain Marshall
Excelsior Co. equipment in accordance
with federal, state, and local codes and these
instructions. The installation in most states
must also comply with NFPA Pamphlet #58,
ANSI K61.1 and DOT standards.
Proper installation of remote actuation
devices should include thermal protection
to close the internal valve in case of a re.
This pneumatic actuator kit includes thermal
protection.
Only personnel trained in the proper
procedures, codes, standards, and regulations
of the LP-Gas or anhydrous ammonia (NH3)
industries should install and service this
equipment.
INTRODUCTION
Scope of Manual
This manual covers instructions for the ME225
Pneumatic Actuator kit. This kit allows for remote
operation of the ME990-10 (Fisher®C407) internal valve.
DESCRIPTION
The ME225 Marshall Excelsior Co. Pneumatic
Actuator kit ts the ME990-10 (Fisher®C407) 1-1/4”
NPT internal valve to allow for remote valve operation
utilizing air pressure. Applying air pressure to the
actuator moves the drive coupling and the internal
valve shaft to open the valve. Upon loss of air pressure,
the valve’s operating lever immediately returns to the
closed position.
Type ME225 – For ME990-10 (Fisher®type C407)
internal valve (1-1/4” model)
This kit features a spring return design that eliminates
the need for an air return.
SPECIFICATIONS
Pressure Source: Air
Cylinder Pressure Limits: Minimum – 20 psig
Maximum – 125 psig
Recommended – 30-50 psig
Temperature Limits: -60°F to 250°F
Return Mechanism: Spring only – no air
MAINTENANCE
A simple preventive maintenance program for the
valve and its controls will eliminate many potential
problems.
Marshall Excelsior Co. recommends these steps be
conducted at least once a month:
1. Inspect the operating lever to see that it operates
freely.
2. Conrm the actuator fully opens and closes the
internal valve without sticking. Keep the actuator’s
drive coupling free of any build-up of mud,
corrosion, or other foreign material. Such a
build-up could prevent the actuator from closing
which could jam the internal valve in the open
position. Do not permit this condition to occur.
3. Because the actuator has a sealed housing,
internal lubrication is not required. For smooth
operation, lubricate the operating coupling joint.
4. Inspect, clean and oil all operating controls.
Marshall Excelsior Co.
1506 George Brown Drive Marshall, MI 49068
Phone [phone] Fax [phone]
e contents of this publication are for informational purposes only. While every eort has been made to ensure accuracy, these contents are not to be construed as warranties or guarantees, expressed or implied, regarding the products or services described herein or
for their use or applicability. Marshall Excelsior Co. reserves the right to modify or improve the designs or specications of such products at any time without notice. e MECTM logo is the trademark of Marshall Excelsior Co. Fisher® and Fisher® Internal Valves are
the trademarks of Emerson Electric Co. Instruction #461 Rev B 1/12

INSTALLATION
CAUTION
The use of a pressure reducing regulator to
supply the minimum cylinder operating
pressure (30-50 psig) to the actuator will
maximize product life and minimize air
consumption.
To install an actuator kit, rst remove any existing
operating lever from the internal valve shaft.
WARNING
Release all downstream pressure before
removing the two screws holding the cover
plate to the internal valve body. Failure to
follow these instructions or to properly
in stall and maintain this equipment could result
in an explosion and/or fire causing property
damage and personal injury or death.
When installing the ME225, first install the drive
coupling over the internal valve shaft with the cross
hole toward the valve. Align the drive coupling cross-
hole with the internal valve shaft and pin in place
with the split pin. Remove the screws holding the
cover plate to the internal valve body. Discard the
screws and retain the cover plate. Ensure that the
internal valve packing rings remain in position during
disassembly and reassembly. With the cover plate in
position, install stand-offs through cover plate and
hand tighten to internal valve. Position actuator
mounting plate over stand-offs with counter-sink
holes facing out. Install mounting screws through
mounting plate and hand tighten to stand-offs. Wrench
tighten stand-offs to internal valve then wrench tighten
mounting plate to the stand-offs. Ensure even gap
between cover plate and internal valve packing.
Rotate drive coupling clockwise by hand until it stops,
then back off counterclockwise 1/8 turn.
Position actuator with air inlet connection facing away
from container and install over drive coupling. Install
mounting bolts with lockwashers through mounting
bracket and wrench tighten to actuator.
Note: The inlet tee connection is factory installed and
includes a thermal safety plug which is required by
code. This must remain installed to the actuator.
Connect the actuator pressure line tubing to the
inlet port. After installing the unit, operate the
actuator with pressure to conrm it smoothly opens
and closes the internal valve without sticking or
jamming. Conrm actuator opens the valve a full
90 degrees by watching the indicator arrow.
Note: The plastic arrow located on the actuator shaft
is an indicator only and is not a manual operation
handle.