Hydrotech DLR-4M_7M Ultraviolet Water Disinfection Unit - Manual (Page 18)

O & M Manual DLR-M, 4-7
08/05 – Rev. 6 18
Alarms
Displays
The front panel of the electrical control box has the following LED displays:
LED Displays Diagram
LED Displays:
• LAMP ON: green
• REPLACE LAMP: red
• ALARM: red
• UV intensity HIGH: green
• UV intensity LOW: yellow
Alarm
activation
The WEDECO UV disinfection unit has built in alarms to warn of inefficient
performance or lamp failure.
What Happens Cause How to Resolve
• The REPLACE
LAMP LED blinks.
• The internal ALARM
beeps once every 5
minutes.
The internal counter has reached 30
days of lamp life remaining.
IMPORTANT! Water to the
house is being disinfected and
the solenoid valve (optional)
will remain open.
• Press the RESET button once to
silence the alarm buzzer for 5
days. The alarm buzzer will begin
to beep again 5 days after pressing
the RESET button and continue
until lamp has been replaced and
the unit reset.
• Replace UV lamp within 30 days
to ensure optimum performance
from the unit.
• The LAMP ON LED
is no longer
illuminated.
• The REPLACE
LAMP LED is
illuminated
continuously.
• The ALARM LED
blinks
• The internal ALARM
buzzer beeps
continuously.
The internal counter has reached 0
(zero) days of lamp life. Or, lamp
has failed due to another problem.
(See Troubleshooting section.)
WARNING! Disinfection may
be insufficient to ensure safe
drinking water. Do not drink
water without boiling or
disinfecting through some
other means.
• Press the RESET button once to
silence the alarm buzzer for 5
days. The alarm buzzer will begin
to beep again 5 days after pressing
the RESET button and continue
until lamp has been replaced and
the unit reset.
• Replace lamp immediately. Follow
instructions on lamp replacement
in the manual.