NuAire LabGard ES NU-543-300S, Operation And Maintenance Manual

Page: 27 / 72

OM0239 Page 27 of 72
April 2021
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Auto Timer Duration
Auto timer duration timers are countdown timers for the functions displayed once time is entered
into a function. The timer will begin to countdown upon the start of that function (i.e. press UV light
key to start timing the UV light). The LED indicator above the function key will start to blink indicating
the timer function. If the LED indicator was full on, no timer function is present. As the timer expires
the function will turn off.
Each timer will indicate the run time in hours and minutes. The minute hold will increase or decrease
in 15 minute intervals. The maximum timer duration is 8 hours.
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Press ↑ or ↓ key to select menu item
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Press ENT key to highlight time display
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Press ↑ or ↓ key to desired time.
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Press ENT key to accept time value
6.1.8.3 UV lamp hours (if UV light option is installed)
UV lamp hours will indicate the number of hours the UV light has been on. When the lamp hours reach 5000,
a message will be provided to replace UV light. Once the replacement is complete, the UV lamp hours may be
reset by the following:
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Press ↑ or ↓ key to select menu item
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Press ENT key to highlight the hours
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Press ↑ and ↓ keys simultaneously until hours clear
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Press ENT key to accept “0” reset value.
6.1.8.4 Temperature
The temperature displayed is provided by the airflow sensor in the cabinet’s exhaust airstream. The
temperature displayed may indicate a slightly higher value than the laboratory room temperature due to
some heat generation of the cabinet itself. However, the temperature may be adjusted by an offset or
(deviation from the indicated temperature, plus or minus in tenths of a degree) calibration procedure by
the following:
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Press ↑ or ↓ key to select menu item
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Press ENT key to highlight the temperature value
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Press ↑ or ↑ key to enter the amount of offset (increase or decrease from displayed value)
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Press ENT key to accept offset and display new temperature value.
6.1.8.5 Blower On/Off password (default on)
Blower On/Off password allows the cabinet user to place a 3 key sequence requirement to turn on the
blower. The 3 key sequence will be a combination of the blower and hidden key (hidden key is located just
above blower LED under the center of the Airflow symbol). During the 3 key sequence, the first 2 key strokes
will not have any audible feedback. The last key stroke will have the normal audible feedback indicating a
successful password. The 3 sequence combinations are the following:
None
B-B-H
B-H-B (default)
B-H-H
H-B-B
H-B-H
H-H-B
To select a password sequence, perform the following:
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Press ↑ or ↓ key to select menu item
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Press ENT key to highlight the password
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Press ↑ or ↓ key to desired password
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Press ENT key to accept password
Auto Timer Duration (hh.mm)
Ultraviolet Light 0:45
Fluorescent Light 7:00
Outlet Power 8:00