Hidaka leak protection system
The Hidaka leak protection system (made in China) is designed for timely detection of water leaks, alerting, and shutoff localization in water supply and heating systems.
WLD-806 controller board, side 1
The system consists of water detection sensors, CWX-15Q (CR03) motorized ball valves, and a WLD-H806 controller.
The motorized ball valves connect to the controller via a 3-wire scheme (red +power, blue -power, yellow -control). The valve is controlled by closing the control wire to +power.
The WLD-806 controller is built around a PIC16F59 PIC microcontroller, has 8 inputs for water sensors and a control output for driving the ball valves.
The control signal (yellow wire) is switched by an ATQ209 relay. Power to the valves is controlled by a composite transistor switch.
WLD-806 controller board, side 2
Ball valve with cover removed
The valve contains a pulse DC/DC converter based on the MC34063 chip for powering the motor. The end positions of the toothed sector that rotates the shutoff ball are determined by 2 microswitches. Reversing the motor's supply polarity to change direction is performed by an electromagnetic relay.
Motor and gearbox
Ball valve, view of the toothed sector and limit switches
Ball valve with gearbox removed
The controller is powered from an external 12V, 2A power supply.
Original operating manual
Igor says:
Igor says:
Anatoly says:
Sergey says:
admin says:
Anton says:
Nikita says:
Konstantin says:
Installed it, everything works as described.
Advantages:
-inexpensive;
-Powered from 12V/220V;
-compact.
Disadvantage:
-Plastic gear that turns the ball valve;
-No automatic close-open (in case of jamming - not mentioned in the description);
-No battery connection for backup power.
Photo:
Photo of the control unit:
In operation for the 7th month.
Sensors under the washing machine, in the "Moydodyr" [sink cabinet] and under it, behind the toilet, under the meters, in the kitchen sink cabinet and under it.
Triggered 2 times:
— from condensation;
— the hot water meter housing leaked.
Installed a 12V 7Ah battery (cut a socket into the control unit, connected it through a diode and a fuse) - now it can stay "on standby" even without 220V.
Almost four years in operation!
No regrets!
Please tell me the rating of resistor R12 on the controller board (it burned out after several activations).
47 Ohm - through it +12 V goes to the 78L05 regulator
Thank you! I fixed it…
47 Ohm
Good day! Please tell me, can four such electric valves be connected, will the controller burn out? What output current does it supply to the valves?
Switching of the valves is done through relay contacts, so with 4 valves connected in parallel nothing should burn out.
there are 2 such systems standing 8 meters apart in different bathrooms, is there a way to organize a link between them so that when one system trips, the second one also shuts off, but it would still be possible to start both separately by hand. And the second point — outputting trip information and transmitting it wirelessly to a Home Assistant smart home, is there a way to implement something like that?
transistor Q1 burned out, please tell me its marking
transistor Q1 has 1G6 written on it. I suspect it also burned out. How can I find out what kind of transistor it is? Test it?