Cleaning the control unit:

The control unit may periodically be wiped with a damp cloth and mild detergent.

As with all electronic/electrical devices, it should not be sprayed with water or steam-cleaned.


Cleaning the valve:

The control valve should be cleaned periodically together with any associated dirt collector or filters, if fitted. It is generally not necessary to remove the valve from the pipe.

The valve can be cleaned in 5 easy steps:

Step 1:

Remove the valve coil by slipping the plastic split washer off

Step 2: The valve actuating can then be removed and the two raised screws can be removed.

Step 3: It is then possible to separate the two parts of the valve, taking care not to lose the two rubber 'O' ring water seals.

This may be carefully removed and flushed with clean water to remove any accumulated debris. Flush clean water through and solenoid body to clean thoroughly.

Step 4: Reassemble the valve and valve actuator carefully.

The valve can be tested by operating the circuit board and switch.

Step 5: The switch must be returned to the closed position within one minute, otherwise the flush fill time will be affected.


Changing the battery:

It is recommended that the battery be replaced every three years. Under normal operating conditions the red lamp on the control box will flash when the battery requires changing and each battery is stamped with a replacement date which should not be exceeded.

The controller cover is removed from the back mounting plate by inserting a screwdriver into the hole on the controller top edge and screwing down the retaining screw. the electronics and battery are contained in the controller cover and care must be taken not to disturb the interconnecting cable.

Remove the old battery which is retained by a velcro pad. New batteries are available from your supplier or Marnic Technology (see the Contact section).

Install the replacement battery and follow the standard set-up procedure (see the installation section for further details) before replacing the control unit cover.


Changing the flush settings:

See the 'How it Works' section for instructions on how to change the flush rate.


Operational testing:

The 3 checks listed below can be carried out at any time during the lifetime of the product.

To carry out these checks access is required to the inside of the Water Watch controller.

1. Check that the valve is operating:

Slide the switch at the top right-hand corner of the circuit board down to the "OPEN" position. -> The valve should open.

If the valve does not operate but Check 2 (the movement sensor test) gives a positive result, clean the valve filter (for more instructions on how to do this, click the 'Cleaning the Valve' section above).

If this does not restore the valve, try a replacement valve.

2. Check the movement sensor:

Carry out the valve est described in Check 1.

While the switch is in the "OPEN" position the red lamp on the front panel should flash intermittently in response to movement.

If the lamp does not flash but the valve operates, replace the circuit board.

If the lamp does not flash and the valve also fails to operate, change the battery.

3. Check the battery:

If the red lamp is flashing and the switch is in the (normal) "CLOSED" position, replace the battery.

If you have a  volt meter, the battery voltage should be above 5 Volts.

If a volt meter is not available, a confidence check can be carried out by conducting the valve test described in Check 1.