IMO 10/19
IMO-215 EN
3
1.
GENERAL
This instruction manual contains important information
regarding the installation, operation and troubleshooting
of
Quadra-Powr
X Spring-Diaphragm Actuators.
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). As the use
of the
Quadra-Powr
X is application specific, many factors
should be considered when selecting an actuator for given
application. Therefore, some of the situations in which the
actuators are used are outside the scope of this manual. If
you have any questions concerning the use, application
or compatibility of the actuator with the intended service,
contact Metso fo more information.
Please read these instructions carefully and save them for
further reference.
1.1
WARNING
LOSS OF AIR PRESSURE MAY CAUSE SPRING-RETURN ACTUATORS
TO MOVE TO THEIR ‘FAILURE’ POSITION.
APPLYING AIR PRESSURE OR CONTROL SIGNAL TO VALVE/
ACTUATOR ASSEMBLY MAY CAUSE THE ASSEMBLY TO OPERATE.
BEWARE OF MOVEMENT OF THE VALVE AND ANY LINKAGE BETWEEN
IT AND THE ACTUATOR. KEEP HAND, BODY PARTS, TOOLS AND
OTHER OBJECTS OUT OF THE WAY OF MOVING PARTS. FAILURE TO
DO THIS MAY RESULT IN DAMAGE OR PERSONAL INJURY!
ALWAYS KEEP HANDS AND CLOTHING AWAY FROM THE VALVE
PORTS. A CLOSING VALVE ACTS AS A CUTTING DEVICE.
DO NOT TRY TO MANUALLY OPERATE A PRESSURIZED ACTUATOR.
NEVER DISASSEMBLE A PRESSURIZED ACTUATOR! - DISASSEMBLING
A PRESSURIZED ACTUATOR WILL LEAD TO UNCONTROLLED
RELEASE OF PRESSURE. SHUT OFF SUPPLY PRESSURE AND RELEASE
THE PRESSURE FROM THE ACTUATOR BEFORE DISASSEMBLY.
FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN
DAMAGE OR PERSONAL INJURY!
DISASSEMBLY OF A SPRING-RETURN ACTUATOR MAY BE DANGEROUS.
NEVER ATTEMPT TO DISASSEMBLE THE SPRING CARTRIDGE
ASSEMBLY OF A SPRING-RETURN ACTUATOR. DISASSEMBLY OF THE
SPRING CARTRIDGE ASSEMBLY MAY RESULT IN SERIOUS PERSONAL
INJURY! IF MAINTENANCE IS REQUIRED THE ENTIRE SPRING-RETURN
ACTUATOR SHOULD BE DIRECTED TO A METSO SERVICE CENTER.
SHUT OFF AND BLEED ALL SUPPLY LINES BEFORE INSTALLATION OR
SERVICING THE ACTUATOR.
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 CORRECT VALVE POSITION COULD RESULT
IN DAMAGE OR PERSONAL INJURY!
THE ACTUATOR MUST BE SIZED ACCURATELY FOR PROPER
OPERATION. REFER TO INFORMATION ON THE 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.
DO NOT USE VDI/VDE MOUNTING HOLES TO LIFT AN ACTUATOR.
OPERATING AN ACTUATOR ABOVE ITS TEMPERATURE LIMITS MAY
DAMAGE INTERNAL AND EXTERNAL COMPONENTS AND MAY
RESULT IN PERSONAL INJURY!
OPERATING OVER THE PUBLISHED PRESSURE LIMITS OF THE
ACTUATOR MAY RESULT IN DAMAGE OR FAILURE OF THE ACTUATOR
HOUSING, AND MAY RESULT IN PERSONAL INJURY!
1.2
Handling Quadra-Powr X Actuators
When handling the actuator or valve/actuator assembly,
take its weight into account! Approximate actuator weights
are shown in Table 1. Never lift the actuator or valve/
actuator assembly by the actuator positioner, limit switch,
their piping, or an NPT air connection. Handling of the
actuator should be accomplished using lifting straps as
shown in Figure 1. Failure to follow these instructions may
result in damage or personal injury from falling parts. Obey
any local or national requirements.
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
Approx. Weight kg (Lb.)
QPX1
12 (26)
QPX2
18 (39)
QPX3
30 (65)
QPX4
48 (105)
QPX5
94 (205)
QU
AD
RA
-PO
WR
Figure 1.
