Pentair UV MAX PUV-7 Owner's Manual page 14

Operation
Note: UV levels of
Indicates the system is functioning within a normal operating range.
to
Indicates the UV level is still within a safe level, however cleaning or lamp/sleeve replacement may soon
to
be required.
Indicates the UV level is nearing the point of unsafe UV intensity, UV system should be immediately
to
serviced.
Indicates the UV level has now reached a level that is unsafe. At this level the water should not be
<
consumed. The system/water supply should be examined to determine the reason for the low UV level
of the UV intensity. At this level, the solenoid output has been activated and if a solenoid is installed,
water will cease to flow.
DEFERRAL - To temporarily defer the audible alarm and re-activate solenoid valve (if fitted) during a low UV alarm,
press the timer reset button and hold for five seconds. This will mute the audible alarm condition and activate solenoid
output for 12 hours.
Over Temperature - When the water temperature inside the UV reactor chamber exceeds the maximum rating for the
UV system (40 °C) the Controller will show "Ot" on the display. This is usually caused by extended periods of no water
flow. To clear this condition simply open a faucet and allow water to flow through the system.
Possible causes for low UV alarm conditions:
a. The UV lamp has perhaps reached a level whereby it can no longer adequately provide a sufficient level of
disinfection due to age (> 9000 hours). The lamp should be replaced with a new lamp from the manufacturer of the
same size and type.
b. The quartz sleeve and/or the sensor window have become stained or dirty. Mineral deposits or sediment in the
water that was not detected during the original water analysis may be the cause for this. Refer to
c. Intermittent voltage drop in the household controller reducing the lamp output. The lamp will return to normal when
the power is restored to full voltage.
Note: The monitoring system will not operate during power failures.
d. The quality of the influent water has changed and is no longer within the acceptable operational range of the UV
system. Perform a water analysis to determine the exact constituents and concentration levels.
e. The UV sensor is not installed correctly.
5.2.2 Lamp Life Remaining (Days)
To obtain this reading, press the timer reset button a single time and follow the steps as outlined in
regarding the operation of this feature.
5.2.3 Total Days of Operation
To obtain this reading, press the timer reset button two times in succession and follow steps as outline in
Section 5.1.3, regarding the operation of this feature.
5.2.4 Lamp Failure (Blank Screen)
Refer to
Note: On the Pentair systems, the audible tone provided for lamp failure is a continuous alarm, rather than the
intermittent (1 second on, 1 second off) condition on the basic Pentair systems.
14
Section 5.1.5 for explanation of this feature.
Section 4.2.
Section 5.1.3,