ZPA Pečky 52 030, Mounting Instructions

Page: 21 / 52

21
After receipt of actuators from manufacturer, actuators must be checked for possible damage suffered during
transport. Compare if details on serial plates of actuator correspond with purchase order and accompanying
documentation. Possible discrepancies, defects or damage must be immediately reported to supplier.
If the packed actuator is not installed immediately after receipt, it must be stored in dust-free room with ambient
temperature between -25 °C and +50 °C, with relative humidity up to 80 %, free from corrosive gases and fumes,
protected from harmful climate impacts. If stored for a period longer than 3 years, oil filling must be replaced prior to
commissioning. Any manipulation at temperatures lower than -25 °C is forbidden. It is impermissible to store actuators
outdoor or in areas unprotected from rainfall, snowfall and/or ice. Surplus preservative grease must be only removed
before commissioning the actuator. When storing unpacked actuators for a period exceeding 3 months, we recommend
you to insert a small bag with silica gel or another suitable desiccant material into the terminal box.
9. FUNCTIONAL VERIFICATION AND LOCATION OF DEVICE
Before starting to install the device, again check actuator for any damage suffered in the course of storage.
The function of electric motor can be verified by connecting it to power supply through a switch and by powering it up
shortly. It is sufficient to observe if the electric motor starts up and if the output shaft starts rotating. Actuators must be
located in an area providing easy access to hand wheel, terminal box and control box. Also, it must be verified again if
the location meets the provisions of “Operating Conditions” section hereof. If local conditions require another method of
installation, manufacturer’s approval must be obtained.
10. INSTALLATION ON VALVE
Set actuator onto the valve so that its output shaft reliably fits in the valve coupling. Use four (eight) screws to
connect actuator with valve. Turn hand wheel to check correct connection between actuator and valve. Remove
cover of terminal box and carry out electrical connection of actuator according to internal wiring diagram.
Three lifting eyes are available on the actuator for manipulation with actuator in the course of installation on
valve. However, these lifting eyes must never be used for suspending the actuator together with the valve.
Actuator must be properly protected against overloading and against short-circuit.
11. ADJUSTING ACTUATOR WITH VALVE
Having fitted the actuator on the valve and checked for correct mechanical connection proceed with the actual set-up
and adjustment.
Set-up and adjustment can only be carried out by personnel with the prescribed qualification. It is not permitted to
carry out these works without having duly studied the present Installation Manual.
1) Set actuator manually into interim position.
2) Connect actuator to power supply line, and shortly switch on in the middle of its working stroke to verify correct
rotation direction of the output shaft. When looking inside the control box, the input shaft will rotate clockwise, while
moving in “closing” direction.
3) Electrically set actuator close to “closed” position, use hand wheel to arrive precisely at the “closed” position. In this
“closed” position, adjust position unit (micro switch PZ) according to point 5c and adjust resistance or current
transmitter as per point 7d.
4) Set output shaft to a position, where the signalling switch SZ is supposed to change over. Adjust SZ switch according
to instructions specified under point 7b.
5) Turn the actuator output shaft by the required number of revolutions and set switch to PO “open” position as described
under point 7c and resistance transmitter as described under point 5d. Several times verify the adjustment of position
and signalling switches, and the adjustment of position transmitter.
6) Set output shaft to a position, where the signalling switch SO is supposed to change over. Adjust SO switch according
to instructions specified under point 7b.
Warning:
To remove the control box cover, slide it along the extended axis of the actuator output shaft while avoiding any
damage to position indicator. While installing valve onto pipe, use hand wheel of actuator to set the valve into its central
position. Shortly run the electric motor to verify if the actuator is rotating in the correct direction. If this is not the case,
change-over the two phase conductors on the electric motor terminal board and check limit switches for correct function.