IMO - 49 EJ/EJX (MODEL G) ELECTRIC ACTUATORS

EJ/EJX (MODEL G)
ELECTRIC
ACTUATORS
IMO - 49
ISSUE 5/95
INSTALLATION, MAINTENANCE
AND OPERATING INSTRUCTlONS

2
Table of Contents
I GENERAL ................................ 3
1.1 Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 INSTALLATION ............................ 3
2.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Installation of Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Installation of Heater Option (LK5060) . . . . . . . . . . . . . . . . . . 4
2.4 Installation of the Auxiliary Board , . . . . . . . . . . . . . . . . . . . . . 4
2.5 Installation of the Two Extra SPDT Limit Switches Option (EH5089) . . . 4
3 MAINTENANCE ............................ 5
3.1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 CAM ADJUSTMENT INSTRUCTIONS ................ 5
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.2 Valve Open Position . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.3 Valve Closed Position . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 REPLACEMENT OF MOTOR CONTROL LIMIT SWITCH ..... 5
6 MANUAL OVERRIDE INSTRUCTIONS ............... 6
7 EXPLODED VIEWS AND PARTS LIST. ............... 7
READ THESE INSTRUCTIONS FIRST!
These instructions provide information about safe handling and operation of the valve
If you require additional assistance, please contact the distributor or representative.
The address and phone number are printed on the back cover.
SAVE THESE INSTRUCTIONS!
Subject to change without notice.

I GENERAL
1.1 WARNING
I. DISCONNECT POWER BEFORE REMOVING COVER.
2. TO PREVENT IGNITION OF HAZARDOUS ATMOSPHERES,
DISCONNECT SUPPLY CIRCUIT BEFORE OPENING UNIT.
KEEP ASSEMBLY TIGHTLY CLOSED WHEN IN OPERATION.
3. TO MAINTAIN THE HAZARDOUS LOCATION RATING OF
EJX ACTUATORS, IT IS ESSENTIALTHAT MATING SURFACES
OF FLANGES BE PROTECTED FROM NICKS AND SCRATCHES
WHILE DISASSEMBLED. UPON REASSEMBLY, THERE MUST BE
NO DIRT OR PARTICLES ON THE MATING SURFACES OR
FLANGES.
4. BEFORE INSTALLING THE VALVE AND ACTUATOR, BE
SURE THAT THE INDICATOR POINTER ON TOP OF THE
ACTUATOR IS CORRECTLY INDICATING THE VALVES PO-
SITION. FAILURE TO ASSEMBLE THESE PRODUCTS TO INDI-
CATE CORRECT VALVE POSITION COULD RESULT IN
PERSONAL INJURY.
1.2 OPERATING INSTRUCTION
Normal operating voltages for electric actuators: 115 VAC, 230
VAC as specified on the actuator. Refer to Product Bulletin A120-2
for torque output, duty cycle and operating speed. See wiring
diagram for proper wiring. Operating temperature range is -40°F
to +120°F however, below +40° F the heater option is required.
MOUNTING INSTRUCTIONS
I/4" - 2" A, AF & B Style Valves AMI-I
l/4" - 2" CLINCHER@ Valves AMI-2
I-l/2" - 2" A, AF, B Style Valves AMI-3
l/4" - 2" HP/HT Valves AMI-5
I/4" - 2" Series 5000 Valves AMI-8
3" - 4" 5150, 3" - 4" 5300, 2" - 3" 6150
2" - 3" 6300 AMI-9
1/2" - 2" Series 4000 Valves AMI-10
Butterfly Valves (See Valve IMO)
To obtain copies of these, contact your nearest Neles-Jamesbury
stocking distributor or write: Neles-Jamesbury, Inc., Box 15004,
640 Lincoln Street, Worcester, Massachusetts 01615-0004, U.S.A.
CAUTION
2 INSTALLATION CAUTION
2.1 General
Mount these actuators by following actuator mounting instructions
contained in the following AMI’s:
WIRING OF THE EJ/EJX (MODEL G) ACTUATOR
WHENEVER AN ACTUATOR IS REMOVED FROM THE
VALVE AND THEN REMOUNTED, THE LIMIT SWITCHES
MUST BE READJUSTED. SEE ADJUSTMENT SECTION.
WHEN SERVICING A VALVE/ACTUATOR ASSEMBLY, THE
BEST PRACTICE IS TO REMOVE THE ENTIRE ASSEMBLY
FROM SERVICE.
BEFORE PERFORMING ANY MAINTENANCE TO THIS AC-
TUATOR, DISCONNECT INCOMING POWER AND UN-
PLUG THE CAPACITOR FROM THE BASIC BOARD.
3

4
2.2 INSTALLATION OF ACCESSORIES 2.4 INSTALLATION OF THE
To remove the cover from the EJ actuators remove the indicator
pointer and the cover hold down screws. On EJX actuators only,
the indicator pointer is part of the cover sub-assembly and is
therefore not removed prior to removing the cover.
When reinstalling the cover care must be taken not to allow the
cover to cock in relation to the base. On all EJ actuators the cover
gasket must be installed between the cover and base flanges before
reinstalling the cover. Tighten one screw partially then another on
the opposite side of the flange, repeating this procedure until all
screws are partially tightened. Repeat this procedure to fully
tighten screws. On the EJX actuators replace the cover and cover
hold down screws. Care must be taken during reassembly that no
particles or dirt are on the mating surface of flanges.
2.3 INSTALLATION OF THE
Internal Heater
HEATER OPTION (LK 5060)
An internal heater with a thermoswitch is available for Neles-
Jamesbury EJ and EJX actuators. These heaters are recommended
for use whenever an actuator is installed in areas where the
temperatures will be below +4O°F (+4°C) in order to prevent
condensation. Power requirement for standard heaters for EJ and
EJX actuators is 100 watts.
I. Mount the thermoswitch to the Basic Board mounting bracket
using the screws, nuts and lock washer provided in the linkage kit.
2. Place the heater blanket around the motor(s).
3. Route one lead wire through the conduit. Cut the second lead
wire approximately 4" or long enough to reach one of the terminals
on the thermoswitch. Assemble one of the connectors and insulator
provided in the linkage kit to it and connect it to the thermoswitch.
4. Assemble a connector and insulator to one end of the cut off
lead wire.
5. Connect the lead wire to the thermoswitch and route it through
the conduit.
6. Apply the label from the linkage kit to the outside of the cover.
FIGURE I
AUXILIARY BOARD
To install the board simply snap the two stand-offs into the holes
provided on the leg of the mounting bracket. Terminal #I (N.O.),
#2 (Common), #3 (N.C.) for the open auxiliary switch. Terminal
#4 (N.O.), #5 (Common), #6 (N.C.) for the close auxiliary switch.
Terminals 7, 8 and 9 are not used.
NELES-JAMESBURY
300-0017-00
AUXILIARY BOARD
FIGURE 2
2.5 INSTALLATION OF THE TWO EXTRA
SPDT LIMIT SWITCH OPTION (EH5089):
The linkage kit contains two pre-wired SPDT limit switch packages,
wiring labels and the auxiliary board. Each limit switch package is
made up of: a limit switch housing, a cam, a prewired 5 AMP limit
switch with a female connector. Once the auxiliary board has been
installed the two SPDT limit switches will plug into the auxiliary
board connectors.
The standard convention for installing limit
switches in N-J products is: the lower switch will
control or indicate the close position, and the upper
switch will control or indicate the open position.
To install a switch package onto the top of the existing motor
control limit switches follow the steps as outlined below:
I. Slide a fully assembled switch package over the cam/gear shaft
and snap the locking legs into the holes on top of the OPEN motor
control switch housing. The lower switch (the switch installed first)
could be used for control or to indicate the close position of the
valve.
2. Repeat the procedure for the next switch. This switch could be
used for control or to indicate when the valve is in the open
position.
3. Attach the lead wire with the connector into the mating
connector on the auxiliary board. The connectors on the auxiliary
board are labeled OPEN and CLOSE.
4. Cam adjustment is made the same as in the CAM ADJUSTMENT
section of this IMO.

3 MAINTENANCE
3.1 General
CAUTION: Use the correct parts. Failure to do so could result
in improper operation or personal injury. Contact your Neles-
Jamesbury distributor or representative for authentic Neles-Jamesbury
replacement parts.
I. These actuators require no lubrication, and under normal
operating conditions only periodic observation is needed to see
that they are functioning properly. Maintenance or repair requirements
other than those described herein, should be referred to
Neles-Jamesbury for service.
NOTE: These actuators are equipped with thermal overload
protection, if the actuator does not run, allow to cool before
operating. Also check to insure that the manual override shaft has
fully re-engaged.
2. To remove the EJ 20, 50 and 90 cover, remove the position
indicator pointer and cover hold down screws. To remove the
EJX20, 50 and 90 cover, remove cover hold down screws. Extreme
care must be taken to avoid any damage to mating faces of
the cover flanges of EJX actuators since scratches or nicks would
violate hazardous location rating.
3. To remove the capacitor, unplug the connector from the basic
board and remove the capacitor from the wire tie.
4. When reinstalling the cover, care must be taken not to allow
the cover to cock in relation to the base. On all EJ actuators the
cover gasket must be installed between the cover and base flanges
before reinstalling the cover. Tighten one screw partially, then
another on the opposite side of the flange, repeatingthis procedure
until all screws are partially tightened. Repeat this procedure to
fully tighten screws. On the EJX actuators replace the cover and
cover hold down screws. Care must be taken during reassembly
that no particles or dirt are on the mating surface of flanges.
4 CAM ADJUSTMENT
4.1 General
INSTRUCTIONS
There are NO TOOLS REQUIRED to adjust the cams. The cam is
a friction fit to the shaft. Cams are adjusted by rotating the cam
on the shaft by hand. When reinstalling the cover care must be
taken not to allow the cover to cock in relation to the base. On all
EJ actuators the cover gasket must be installed between the cover
and base flanges before reinstalling the cover. Tighten one screw
partially then another on the opposite side of the flange, repeating
this procedure until all screws are partially tightened. Repeat this
procedure to fully tighten screws. On the EJX actuators replace
the cover and cover hold down screws. Care must be taken during
reassembly that no particles or dirt are on the mating surface of
flanges. To adjust for proper valve open and close positions, the
cams for the motor control limit switches #I and #2 must be
moved as follows:
4.2 Valve Open Position:
(Switch #2) (Upper Switch)
(See Figures 3 and 5)
If the valve needs to open more, rotate the cam clockwise as viewed
from the top of the motor. (Counterclockwise on the EJ90 and
EJX90 actuators.) If less valve rotation is required, then rotate the
cam in the opposite direction. There are three slots on the outside
of each cam, these can be used to fine tune the final position of the
cam lobe into the switch lever arm. The slots will accept the blade
of a standard instrument style screw driver. The screw driver can
be used as a lever arm to aid in moving the cam on the shaft. There
is also a small “screwdriver/lever” type tool supplied with the
instruction package. This tool can be used in place of a screwdriver.
A Ball valve is fully open when the hole in the ball is in the center
of the valve body water way.
A Butterfly valve is fully open when the disc is perpendicular to the
valve body flange.
4.3 Valve Closed Position:
(Switch #I) (Lower Switch)
(See Figures 4 and 5)
If the valve needs to close more, (refer to the appropriate AMI for
proper closing position) rotate the cam counterclockwise as
viewed from the top of the motor. (Clockwise on the EJ90 and
EJX90 actuators.) If less rotation is required, rotate the cam in the
opposite direction.
NOTE: EJ20, EJ50, EJX20 and EJX50 actuator cams rotate 135
degrees, EJX90 and EJX90 actuator cams rotate 270 degrees
because of the added gear box.
5 REPLACEMENT OF A
MOTOR CONTROL LIMIT
SWITCH
(See Figure 5)
To remove a limit switch package that is not working, pry the
housing off of the mounting bracket or limit switch housing using
a small instrument type screw driver. Slide the switch package up
and off the cam/gear shaft and discard. In most cases the switch
package will be damaged during removal of the limit switch from
the housing. A new housing is supplied with every limit switch.
Each limit switch package is made up of: a limit switch housing, a
cam and a prewired 5 ampere limit switch with a female connector.
To install the switch package onto the top of an existing motor
control limit switch or switch mounting bracket, follow the steps
as outlined below:
I. Slide a fully assembled switch package over the cam/gear shaft
and snap the locking legs into the holes on top of the switch housing
or switch mounting bracket. The lowerswitch (the switch installed
first) is used to control the CLOSE position of the valve.
2. Repeat the procedure for the next switch. This switch is used
to control the OPEN position of the valve.
3. Attach the lead wire with the connector into the mating
connector on the Basic board. The connectors are labeled OPEN
and CLOSE.
4. Cam adjustment is made the same as in the Cam Adjustment
Section of this IMO.
5

6
FIGURE 3
FIGURE 4
FIGURE 5
6 MANUAL OVERRIDE
INSTRUCTIONS
To use the override, depress the override shaft and turn. NOTE:
When the actuator is mounted to valves with a no-play coupling,
the coupling has to be loosened before the override shaft of the
EJ20, EJ50, EJX20 and EJX50 can be depressed. EJ90 and EJX90
overrides will work without loosening the no-play coupling
screws. There are no mechanical rotational stops on the override.
NOTE: Excessive force applied to the actuator manual override
mechanism after the valve has reached its positive stop may
damage the actuator, valve or both. After using the manual
override check the valve/actuator unit by cycling several times and
observing for proper operation. Neles-Jamesbury valves when
factory mounted turn clockwise to close and counterclockwise to
open unless otherwise specified by the customer. The EJ90 and
EJX90 override mechanism works through a gear reduction. The
override shaft will turn in the opposite direction from the valve.
TROUBLE SHOOTING
PROBLEM TRY THIS
Motor will not run. Check incoming voltage as it
enters the terminal block.
Allow the motor(s) to cool.
Check that all plug-in
connectors are tight.
Review the cam adjustment
section to insure that the cams
are set correctly.
Motor runs, but the If the manual override has
output shaft does not been used, it is possible that it
move. has not fully re-engaged. Move
the shaft slightly until it re-
engages. Loosen the cover
hold down screws to allow the
cover to center around the
space, retighten the cover
screws.
If these steps fail to correct or
identify the problem, contact
the Neles-Jamesbury
Distributor or Representative
in your area.

7 EXPLODED VIEWS AND PARTS LISTS

12
Jamesbury Inc. 640 Lincoln Street Box 15004
Worcester, Massachusetts 01615-0004 USA
Tel: 508-852-0200 Fax: 508-852-8172 Internet: www.jamesbury.com
NELES CONTROLS GROUP A MEMBER OF RAUMA CORPORATION