7)
Start a cistern fill
- hold down internal "SET" button, press and release the external hidden "MANUAL
FLUSH" button, then release "SET" button. Ignore flashing light. Check for a reasonable flow of water
and adjust with trickle cock on pipe end if required. If flow noise is a problem, e.g. next to sleeping
quarters or classrooms, reduce the flow by means of a trickle cock.
As soon as the flush starts, press and release
the "MANUAL FLUSH" button to switch off the valve.
8) When the cistern has emptied, again hold the "SET" button, press/ release "MANUAL FLUSH" to
start fill
, release the set button. The light in the domed lens flashes every 2 seconds to show setting in
progress. Wait until cistern is
part way through flushing then press and release
the "MANUAL
FLUSH" button to switch off the valve. The cistern fill time is now memorised and will be used every time
a flush is started whether automatically or via manual flush. Maximum fill time is 31 minutes.
9)
Set switch 3
as required (see 4 overleaf). Inspect to ensure box is water-tight and final check all
screws, gland and connections for security. Screw controller unit lid onto box.
10) Fill in your part of warranty sheet and leave it with this leaflet with the owner/manager.
Explain section 4 (switch settings) to the person in charge of building maintenance.
SWITCHES/CONNECTIONS/INDICATOR
Multiple cisterns
2 or 3 cisterns with a common feed may be controlled from a single controller and valve. In this case,
adjust outlet cocks feeding each cistern so that they have roughly equal fill times (during step 6), then set
up the fill time using whichever cistern takes longest to fill (step 7). Contact technical support if further
advice required.
Regular Maintenance
Every 2 or 3 years depending on water quality, dismantle and if necessary clean the valve and internal
strainer, then reassemble and operate manual flush to confirm correct operation. It is wise to change the
battery at this time rather than waiting for failure to operate (typically 3-5 years). Ensure that the view
from the controller is not obstructed and that the domed lens has not been damaged or painted. Test PIR
detector as below.
Smartflush Installation Troubleshooting Guide
All units are fully tested prior to despatch. If there is an apparent fault please check the following :-
PROBLEM - UNIT WORKS ON MANUAL FLUSH BUT DOES NOT APPEAR TO SEE ANYONE
Test the infra-red detector
(PIR) as follows :-
1) Ensure valve is turned off. (If necessary, use manual flush button with switch 3 on).
2)
Press and hold SET button
, watching the red light built into the domed lens. The light should flash
once to confirm that the battery is good, then flash 1 second later to show that test mode has been
entered. Release button.
3) Watch the light, which flashes when slow movement is detected. (Can take up to 1 second ).
4) Exit test mode by a short press of the SET button or the manual flush button if enabled. (If left in test
mode, unit automatically reverts to normal operation after 16 minutes to avoid call-backs).
5) At end of test return switch 3 to desired position.
N.B. If the above test works and manual flush also works and fills for the correct time, then the unit will
work correctly in normal use. The controller
normally gives no indication
that it has seen anyone,
except that the red light flashes just once at the start of each timing cycle. The unit can be made ready
for a new cycle by opening and closing the valve using manual flush, then waiting for 10 seconds.
PROBLEM - VALVE WILL NOT TURN OFF
N.B. Valve has a magnetic latch so may be left open or shut while disconnected.
a)
Test battery
and connections by a short press of the SET button. Red light should flash once. If
no response, check wires or connector are correctly connected and have not been damaged.
Disconnect battery then reconnect, ensuring both pins are connected and that red wire goes to "+".
b)
Press the manual flush
button (see facing page). It opens or closes the valve on each press.
Ensure that switch 3 is switched ON (Away from edge of box) otherwise manual flush is disabled.
The red light flashes each time the unit tries to open the valve using manual flush, to test for
reversed wires.
c)
Is the valve fitted the correct way round
? On the Asco valve, the inlet end is stamped with the
word 'IN'. A reversed valve will usually allow water to flow all the time mains pressure is applied.
d) Remove coil retaining clip.
Slide off coil assembly
. If valve stays open, the problem is inside the
valve body. Dismantle and inspect as per (e) below.
e) If the valve was previously working or it appears to be trying to close,
debris inside the valve
is
the most likely cause. Dismantle the value, taking careful note of order of assembly and direction of
spring. Clean moving parts and strainer. The plunger should move freely against the spring
pressure. Inspect orifice and seal for dirt/damage.
f)
Wiring fault ?
Check valve connector and controller connector for loose or shorting wires. Check
connector polarity :- Brown +2 goes to pin 2 on the Asco valve. Check battery connector on both
pins.
g)
Controller or valve faulty ?
Most problems are related to installation; controller and valve faults
are rare. The valve can be tested with a 4.5 volt battery (as used in some pedal cycle lights) or a
PP3. Touch the valve wires BRIEFLY onto the battery; brown positive for on, blue positive to turn off.
The valve state is held magnetically so no power is consumed while the valve is in either state.
PROBLEM - VALVE WILL NOT TURN ON
a)
Slacken compression nuts
on each side of the valve to ensure that there is water pressure on
the Inlet side and that there is no blockage after the valve (e.g. a stuck washer on a cistern cock.)
b) See a,b,e,f and g of previous problem.
PROBLEM - CISTERN ALWAYS SEEMS TO BE EMPTY / UNIT NOT WORKING
The cistern should be empty between flushes. When a fill cycle occurs, the cistern should fill and
flush and the valve should turn off during the flush, hence the cistern will usually remain empty. With
a typical fill time of 3 minutes and a cycle time of 30 minutes the unit will appear to be 'not working'
for 27 out of every 30 minutes even at busy times, so the chance of seeing any activity on a spot
check is remote. If in doubt see first problem (facing page).
PROBLEM - FILLING TIME TOO SHORT / LONG
Set filling time again
, carefully following the fitting instructions. Remember to start the self-timed fill
with the cistern empty, i.e. having just flushed. The fill time is always accurate to 1 second or so due
to the quartz crystal used. Any fill time up to 30 minutes may be set. If a 20 minute cycle is selected
and fill time is longer than 20 minutes, the unit will automatically compensate, so no problems will
arise. If a fill time of longer than 30 minutes is needed, then either there is a restriction to the flow or
the water pressure is too low. As supplied Smartflush can work with a 4 gallon cistern fed with as
little as a 1 metre head. A low pressure valve is available for more extreme conditions, or it may be
possible to switch to a mains pressure rather than tank feed. (Before doing so check local
regulations) .
Fluctuations in mains pressure may cause the fill time to be too short or too long, but this will only
result in a missed or double flush occasionally. Minor fluctuations are compensated for by the fact
that the unit will remain "in step" as long as the valve turns off sometime during the emptying of the
cistern, because the cistern always empties to the same level.
Manual flush
Test/set indicator
