3
IMO-215EN
1
GENERAL
This instruction manual contains important information
regarding the installation, operation and troubleshooting
of Jamesbury®
Quadra-Powr
X Spring-Diaphragm Actua
tors. This unique spring-diaphragm actuator designed for
rotary valves provides safe, smooth and reliable valve
actuation at minimal pressures and up to 100 psi (6.9 BAR).
Please read these instructions carefully and save them for
further reference.
1.1 WARNING
KEEP HANDS AND CLOTHING AWAY FROM THE VALVE PORTS AT ALL TIMES.
DO NOT ATTEMPT TO DISASSEMBLE THE SPRING CARTRIDGE.
DISASSEMBLY OF THE SPRING PACKAGE MAY RESULT IN SERIOUS
PERSONAL INJURY. IF MAINTENANCE IS REQUIRED, THE ENTIRE
ACTUATOR MUST BE RETURNED TO JAMESBURY.
SHUT-OFF AND BLEED ALL SUPPLY LINES BEFORE INSTALLATION OR
SERVICING. DO NOT REMOVE DIAPHRAGM CASING HEX HEAD SCREWS
(27), NUTS (29) OR DIAPHRAGM CASING (15) WHILE ACTUATOR IS
PRESSURIZED.
BEFORE INSTALLING THE VALVE AND ACTUATOR, BE SURE THAT THE
INDICATOR POINTER ON TOP OF THE ACTUATOR (AND THE
IDENTIFICATION PLATE IN FEMALE ACTUATORS) ARE CORRECTLY
INDICATING THE VALVE POSITION. FAILURE TO ASSEMBLE THESE
PRODUCTS TO INDICATE THE CORRECT VALVE POSITION COULD
RESULT IN PERSONAL INJURY.
AN ACTUATOR MUST BE SIZED ACCURATELY FOR PROPER OPERATION.
REFER TO INFORMATION ON ACTUATOR END OF STROKE TORQUES
AND THE APPROPRIATE VALVE BULLETIN FOR OPERATING TORQUES.
WHEN SERVICING A VALVE ACTUATOR ASSEMBLY, THE BEST PRACTICE
IS TO REMOVE THE ENTIRE ASSEMBLY FROM SERVICE. IF THE ACTUATOR
IS REMOVED FROM THE VALVE, IT SHOULD BE REMOUNTED ON THAT
SAME VALVE AFTER SERVICING IS COMPLETED. THE ACTUATOR MUST
BE READJUSTED FOR PROPER OPEN AND CLOSE POSITION EACH
TIME IT IS REMOUNTED.
ACTUATORS ARE NOT TO BE LIFTED USING THE 3/8" NPT IN THE
DIAPHRAGM CASING. HANDLING OF THE ACTUATOR IS ACCOMPLISHED
BY USING LIFTING STRAPS. SEE SECTION 1.2.
1.2
Handling Quadra-Powr X Actuators
Handling of the actuator is to be accomplished by using
lifting straps. (See Table 1) for approximate actuator weights.
Follow (Figure 1) for proper strap lifting technique.
2
INSTALLATION
1. Check to see that the position indicator on the actuator
is assembled correctly for the desired failure mode, either
spring-to-close or spring-to-open. In the spring-to-close
mode, the actuator will cycle clockwise to close upon loss
of pressure. In the spring-to-open mode, the actuator will
cycle counterclockwise to open upon loss of pressure.
2. If the actuator is not set up in the configuration desired,
remove the four hex head screws (33), indicator plate
(12), indicator pointer (24), and remount them on the
opposite mounting surface. In the female actuators,
the fastener identification plate shows the failure
mode of the actuator.
TABLE 1
Handling
Quadra-Powr
X Actuators
Actuator Series
Approximate Weight Lb. (kg)
QPX1
23 (10)
QPX2
42 (19)
QPX3
72 (33)
QPX4
117 (53)
QPX5
235 (107)
Figure 1
SPRING-TO-CLOSE
In this mode, the actuator will cycle clockwise
to close upon loss of pressure
SPRING-TO-OPEN
In this mode, the actuator will cycle counterclockwise
to open upon loss of pressure
Figure 2
