Armstrong Emech F2 Panduan Pemasangan, Pengoperasian & Pemeliharaan - Halaman 16
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1.0 Preparing the actuator for assembly onto Emech™ valves
Before fitting the actuator to the valve assembly, ensure the actuator is in the zero position. All new or replacement
Emech actuators are shipped in the zero position. To check the actuator position or to re-zero an actuator follow
section 1.1 if a power supply is available or section 1.2 for manual re-zeroing.
1.1 Automatically zeroing the actuator (24Vdc power supply required)
Power on the actuator (a 24Vdc regulated power supply is required). Refer Section 3
of the G1 actuator installation, operation and maintenance manual for electrical installation.
With a temperature sensor connected to Port 1 of the actuator ensure the actuator is in
Temperature Controller mode (hold mode and press down (-) on the actuator keypad
to toggle between Positioner or Temperature mode). Now disconnect the temperature
probe from the actuator. The actuator will move automatically to the 'zero' position and
display "E2" on the keypad display.
1.2 Manually zeroing the actuator
If there is no power available to
'zero' the actuator it is possible to
use the actuator's manual override
handle to adjust the actuator shaft
position.
The actuator 'zero' is achieved
when the coupling keyway is at 45°
to the reference plane as indicated
in images 1 and 2.
2.0 Actuator mounting orientation
To accommodate installation space restrictions the actuator may be mounted to an Emech valve in any one of four
positions. The instructions provided in this document explain how to mount the actuator in the standard orientation for
each type of Emech valve. To mount the actuator in one of the other three off-set orientations (see figure 2.1) follow
the directions outlined in section 2.1.
2.1 Nonstandard mounting orientations
Ensure the valve is in the "0" position by following the
standard mounting instructions for the valve in the
relevant chapter of this document. When it comes to
placing the graduated coupling onto the valve spindle
orientate the coupling so the "0" mark aligns with the
desired off set direction as indicated in figure 2.1.
Continue with the standard mounting instructions.
Ensure the notch (zero indication on bracket) in the
actuator bracket aligns with the coupling "0" when the
actuator is fitted to the valve.
The valve and actuator will operate as per a standard mounting assembly
Armstrong International
221 Armstrong Blvd., Three Rivers, Michigan, 49093 - USA
Phone (269) 279-3602 Toll Free (888) HOT-HOSE (468-4673)
16
5.0-Emech Valve to G1 Actuator
Actuator 'zero 'position
Coupling keyway
Reference plane
45°
180° off set
270° off set
Emech valve mounting flange
Figure 2.1 Actuator mounting orientation
Mounting Instructions
G1 actuator keypad
Coupling keyway
45°
90° off set
Standard
(Refer relevant
valve chapter)
Designs, materials, weights and performance ratings are
approximate and subject to change without notice. Visit
armstronginternational.com/emech for up-to-date information.