Hydrotech DLR-4M_7M Ultraviolet Water Disinfection Unit - Manual (Page 19)

O & M Manual DLR-M, 4-7
08/05 – Rev. 6 19
Alarms,
Continued
What Happens Cause How to Resolve
• The UV intensity
HIGH LED blinks.
• The internal
ALARM buzzer
beeps once every 3
minutes.
The UV intensity has dropped
below 70%. Quartz sleeve or
sensor may be dirty.
IMPORTANT! Water to the
house is being disinfected .
• 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 the problem is resolved and
the unit reset.
• Perform routine maintenance as
indicated in the manual.
• Clean quartz sleeve and UV sensor
quartz.
• If the problem persists, have local
water treatment dealer check the
water quality.
• The UV intensity
HIGH LED is no
longer illuminated.
• The UV intensity
LOW LED blinks.
• The internal
ALARM buzzer
beeps continuously.
The UV intensity has dropped
below 50% indicating that there
may be a potential problem within
the UV disinfection unit. Quartz
sleeve or sensor may be dirty.
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 the problem is resolved and
the unit reset.
• Perform routine maintenance as
indicated in the manual.
• Clean quartz sleeve and UV sensor
quartz.
• If the problem persists, have local
water treatment dealer check the
water quality.
• The UV intensity
HIGH LED is no
longer illuminated.
• The UV intensity
LOW LED blinks.
• The REPLACE
LAMP LED is
illuminated
• The ALARM LED
blinks.
• The internal
ALARM buzzer
beeps continuously.
• If the unit has an
optional solenoid
valve, it will shut off
water supply.
The UV intensity has dropped to
zero.
WARNING! UV system is not
operational. 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 the lamp is replaced and the
unit reset.
• Perform routine maintenance as
indicated in the manual.
• Clean quartz sleeve and UV sensor
quartz.
• Replace lamp and quartz sleeve, if
necessary.
• If the problem persists, have local
water treatment dealer check the
water quality.