The information contained in this document is subject to change without notice.
Optima
®
EBF-750
Repair Parts and Maintenance Guide
189
Faucets and Soap Dispensers
1. Sensor LED DOES NOT function (sensor indicator light does not
flash during initial 10 minute set-up mode).
A. There is no visible indicator light. Normal operation. This is a normal
operating feature of the faucet.
2. Faucet DOES NOT deliver any water when sensor is activated.
INDICATOR: Solenoid valve produces audible “CLICK.”
A. Water supply stop(s) closed. Open supply stop(s) completely.
INDICATOR: Solenoid valve DOES NOT produce an audible
“CLICK.”
B. Solenoid Lead is not properly connected to the control module.
Disconnect and reconnect solenoid lead to the control module.
C. No battery or transformer (optional) power is being supplied to sensor.
Ensure that the batteries are installed properly. Check that the
orientation of each battery matches the positive (+) and negative (—)
symbols shown on the bottom of the battery compartment. Reinsert
the batteries into the control module. Transformer (optional) is
unplugged or wall receptacle has no power.
D. Sensor cable is not properly connected to the control module.
Disconnect and reconnect sensor cable to the control module.
E. Sensor range is set at minimum distance. Increase sensor range. Refer
to range adjustment in your installation instructions.
F. Control module assembly is not working properly. Replace control
module assembly.
3. Faucet delivers only a slow flow or dribble when sensor is
activated.
A. Water supply stop(s) partially closed. Open supply stop(s) completely.
B. Solenoid filter is clogged. Remove, clean and reinstall filter. Turn
off water supply at supply stop(s). Activate faucet to relieve system
pressure. Remove water supply line from inlet side of solenoid valve.
Remove cap, water line fitting, gasket, filter housing and filter from
solenoid valve housing. Slide filter off filter housing. Clean filter
using fresh tap water only. If necessary, use a small brush to clean.
Use caution while cleaning to prevent damage to filter. If any filter
components are damaged, replace as necessary. Examine the gasket
for wear or damage; replace if necessary. Reinstall filter on filter
housing. Install filter housing, gasket, water line fitting and cap onto
solenoid valve housing. Tighten cap securely. Reinstall water supply
line to inlet side of solenoid valve.
TROUBLESHOOTING GUIDE
OLD STYLE SENSOR INDICATOR LIGHTS
NEW STYLE SENSOR INDICATOR LIGHT
C. Aerator is clogged. Remove, clean and reinstall aerator.
4. Faucet DOES NOT stop delivering water or continues to drip after
user is no longer detected (automatic shut-off fails even when
batteries are removed).
A. Solenoid valve has been connected backwards. Disconnect solenoid
valve compression fittings at both the inlet and outlet positions. The
water should flow from inlet through the solenoid valve to the outlet
according to the direction of the arrow shown on the side of the
solenoid valve. Reconnect the compression fittings in the correct
orientation.
B. Solenoid valve is dirty. Backflush by reversing water flow (opposite to
the direction shown by the arrow on the side of the solenoid valve)
through the solenoid valve. Reconnect the compression fittings in the
correct orientation. Activate faucet.
C. Solenoid valve module is not working properly. Replace solenoid valve
module.
5. The water temperature is too hot or too cold on a faucet
connected to hot and cold supply lines with Bak-Chek
®
Tee.
A. Supply stops are not adjusted properly. Adjust supply stops.
NOTE: For some systems, a thermostatic mixing valve may be
required.
6. The RED LED turns on in the control module (below deck).
A. One (or more) of the batteries is “dead”. To ensure proper operation,
insert four (4) new AA-size Alkaline batteries. Check that the
orientation of each battery matches the positive (+) and negative (–)
symbols shown on the bottom of the battery compartment. Reinsert
batteries into the control module.
B: Upon start-up mode the control module circuitry also tests the
batteries and the RED LED turns on if the battery voltage is low, no
RED LED light indicates normal battery voltage.
C. If reset (initiates start up mode) button is
pressed, the battery voltage is checked.
If voltage is too low, product is stopped
from operating and RED LED will turn on.
No RED LED light indicates normal battery
voltage.
7. The GREEN LED initially turns on in the
control module (below deck) during
start up mode, then will not appear
again.
INDICATOR: For the 1st ten minutes of operation (batteries
inserted or reset button pressed) the Green LED will turn on when
there is a target present (hands in front of sensor). After ten
minutes, the Green LED will no longer turn on.
A. This is a normal operating feature of the faucet.
INLET SIDE OF SOLENOID VALVE HOUSING
FILTER
FILTER HOUSING
WATER LINE FITTING
GASKET
CAP
SCREWS (2)
LOCKING
TABS
RESET
BUTTON
LED
FOUR (4)
NEW AA-SIZE
ALKALINE
BATTERIES
OPTIONAL
PLUG-IN
TRANSFORMER