Madas EV(Q-R-S-T)-1-3-6 Manual Del Usuario página 13

4.0 - FIRST START-UP
• Before start-up make sure that all of the instructions
on the rating plate, including the direction of flow, are
observed;
• After having gradually pressurised the system,
check tightness and operation of the solenoid valve,
electrically powering / disconnecting the connector
ONLY IF connected to the coil.
IMPORTANT NOTE: Do not use the connector as
a switch to open/close the solenoid valve.
4.1 - RECOMMENDED PERIODIC CHECKS
• use a suitable calibration tool to ensure the bolts are
tightened as indicated in 3.2;
• check tightness of the flanged/threaded connections on the system;
• check tightness and operation of the solenoid valve;
It is the responsibility of the final user or installer to define the
frequency of these checks based on the severity of the service
conditions.
4.2 - ADJUSTMENTS (see fig. 5)
Must be carried out with the system stopped and
valve NOT electrically powered. It is recommended
to wait for the coil to cool down (if previously
powered) and/or to use suitable protections for the
hands against heat;
• Adjust the obturator opening speed from the screw (15).
Gradually increase opening speed by turning the screw
(15) clockwise. IMPORTANT: Changes to inlet pressure
and room temperature can affect valve opening time.
• Adjust the fast stroke by turning the screw (14). By turning
it anticlockwise to the stroke end, valve opening will
immediately be slow. By turning it clockwise, it will initially
be fast and then slow.
• Adjust the flow control by turning the screw (13). Turn it
clockwise to decrease the flow rate, and anticlockwise to
increase it.
5.0 - MAINTENANCE
No maintenance operations need to be carried out inside
the device.
If the coil and/or electronic board/connector need to be
replaced:
• Before performing any operation, make sure that the
device is not electrically powered;
• Since the coil is also suitable to be permanently
powered, coil heating in case of continuous
operation is an entirely normal phenomenon. It is
advisable to avoid touching the coil with bare hands
after a continuous power supply lasting longer
than 20 minutes. In case of maintenance, wait for
the coil to cool down or, if necessary, use suitable
protections;
Madas Technical Manual - 1|1.5b - REV. 0 of 10
NOTE: if the coil (11) needs to be changed following an
electrical failure, we recommend changing the connector (1) as
well. The coil and/or connector replacement operations need to
be carried out taking care to ensure the product's IP65 rating.
• Completely unscrew and remove the central screw (16), then
remove the connector (1) from the coil (11);
• When you have taken out the existing internal electrical
wiring, wire the new connector and secure it to the coil, as
shown in 3.2;
• Completely unscrew and remove the central screw (16), then
remove the connector (1) from the coil (11);
• Using a strap-type wrench for oil filters (fig. 6a), loosen
completely and remove the brake kit (12);
• Extract and remove the coil (11) from the armature assembly
together with the relative gaskets (figure 6b);
• Insert the new coil + gaskets into the armature assembly
(figure 6c);
• Tighten (figure 6d) the brake kit (12) in the armature
assembly hole and secure it using a strap-type wrench for
oil filters.
6.0 - CPI SWITCH
The microswitch that signals the closed position (CPI SWITCH)
is a magnetic proximity sensor with normally open contact. It
provides a signal when the valve obturator closes.
If the solenoid valve comes with the microswitch, the position of
the sensor is already calibrated and set; therefore, for operation
you simply need to connect it to the power supply.
If it comes separately and is installed at a later time on a
solenoid valve with CPI set-up, follow the instructions provided
in paragraph 6.2.
6.1 - CPI SWITCH TECHNICAL DATA
• Ambient temperature
• Switchable voltage
• Switchable current
• Switchable power
• Resistance
• Protection rating
• Cable length
13
May 2018
th
5.1 - REPLACING THE CONNECTOR
5.2 - REPLACING THE COIL (fig. 6)
: -20 ÷ +60 °C
: max 1000 V (dc or ac peak)
: max 1 A (dc or ac peak)
: max 40W ohmic
: 200 mΩ
: IP65
: max 5m
CPI wiring diagram
SPST
open valve / open contact
closed valve / closed contact
EV(Q-R-S-T)-1-3-6