Madas JV(Q-R-S-T)-1 Manual De Instrucciones página 15

5.0 - MAINTENANCE
All maintenance operations must be carried out in
the absence of an explosive atmosphere.
No maintenance operations need to be carried out inside the device.
If the coil 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;
NOTE: The coil replacement operations need to be carried out
taking care to ensure the product's IP65 rating.
5.2 - REPLACING THE COIL (fig. 6)
• 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
• Protection mode
• Cable length
CPI wiring diagram
open valve / open contact
closed valve / closed contact
Madas Technical Manual - 1|1.5bJ - REV. 0 of 1
: -20 ÷ +60 °C
: max 1000 V (dc or ac peak)
: max 1 A (dc or ac peak)
: max 40W ohmic
: 200 mΩ
: IP65
II 3G Ex nC IIC T6 Gc X
II 3D Ex tc IIIC T85°C Dc X
: max 5m (3m provided)
SPST
Aug 2019
st
6.2 - CPI SWITCH INSTALLATION and CALIBRATION
It is necessary to work in a non-explosive atmosphere
and shut off the gas before installation.
• ATTENTION: The CPI switch is supplied with a 3 metre
long pre-wired connection cable. This cable CANNOT be
replaced with a different one. In the event of damage, the
part must be disposed of and replaced with an identical
new one; Any repair (if possible) can only be carried out
by the manufacturer;
• Unscrew the cap (23) under the valve body (4);
• In place of the cap (23) screw in the CPI kit (22). Make
sure that between the body (4) and CPI kit (22) there is
the aluminium washer (18);
• Tighten the CPI kit (22) onto the valve body (4) with a
special commercial spanner;
• In the dangerous zone, wire the ends of the CPI cable with
explosion-proof approved equipment (E.g. Terminal box
with "E" protection or increased safety according to EN
60079-7) using the special wire terminals;
• Connect the CPI cable (16) terminals in series to the
signalling device;
• To calibrate the microswitch loosen the fastening nut (21)
and position (by screwing on or off) the adjustment ring nut
(19) so that, with the solenoid valve in a closed position,
the microswitch provides the signal;
• Secure the adjustment ring nut (19) in that position by
tightening the nut (21);
• The kit is now installed. Open and close the solenoid valve
(by supplying and cutting off power) 2-3 times to make sure
the microswitch is signalling correctly.
7.0 - TRANSPORT, STORAGE AND DISPOSAL
• During transport the material needs to be handled with care,
avoiding any impact or vibrations to the device;
• If the product has any surface treatments (ex. painting,
cataphoresis, etc) it must not be damaged during transport;
• The transport and storage temperatures must observe the
values provided on the rating plate;
• If the device is not installed immediately after delivery it must be
correctly placed in storage in a dry and clean place;
• In humid facilities, it is necessary to use driers or heating
to avoid condensation;
• At the end of its service life, the product is to be disposed of
in compliance with the legislation in force in the country where
this operation is performed.
8.0 - WARRANTY
The warranty conditions agreed with the manufacturer at the
time of the supply apply.
For damage caused by:
• Improper use of the device;
• Failure to observe the requirements described herein;
• Failure to observe the regulations pertaining to
installation;
• Tampering, modification and use of non-original spare parts;
are not covered by the rights of the warranty or compensation for damage.
The warranty also excludes maintenance work, other
manufacturers's assembling units, making changes to the
device and natural wear.
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JV(Q-R-S-T)-1-3-6