Teledyne Everywhereyoulook BLZZRD, Installation And Operation Manual

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BLZZRD Portable Refrigerated Sampler
Section 6 Running Programs
6-5
6.4 How Does the
Refrigerator Work?
The operation of the refrigeration system is under control of the
sampler controller. As long as the controller is powered, the
refrigeration system is active. This is true for all states
(including OFF), except for the time between entering RUN and
the completion of the first sample, and when the pump is
running. To conserve power, the sampler assumes that during
this time there is no sample liquid to cool.
The refrigeration system has two modes of operation. Both
modes are under control of the sampler, which senses the air
temperature inside the refrigerated compartment.
After the first sample until completion of the running program,
the sampler cools the refrigerated compartment to 1°C, ±1. This
low temperature and narrow range allows the refrigeration
system to quickly cool liquid as it is deposited in the bottles.
One hour after the last sample of a program is taken, the
sampler adjusts its control of the refrigerator compressor to
maintain the samples at 3°C, ±1. At this time, the samples have
been cooled and no more liquid at ambient temperature will be
added. The 3°C target temperature maintains the samples
within recognized standards while conserving power.
The measured temperature is reported as FR_TEMP on the run
state displays and in the stored data.
6.5 Interrupting a
Running Program
You can interrupt a sampling program by pressing the Stop key
while the sampler is waiting for the next sample event. Pressing
Stop places the sampler into Manual Paused operation and
records a manual pause in the sample event log.
In this state, the sampler allows you to access several functions.
You can modify the program, reset alarms, take a grab sample,
etc., without adversely affecting the running program. Modifying
the program is limited to adjusting the pacing intervals, enable
conditions and sample volume. The basic program structure,
such as the type of pacing, can not be changed.
While in the manual paused state, the sampling program con-
tinues to operate as normal, with the exception of taking
samples. If a sample was to be taken, it is skipped. The sampler
records “sample skipped” in the sample event log and continues
to operate as normal.
The manual paused state displays a scrolling menu with several
options (see example below). Use the Arrow keys to scroll
through the manual paused options and the

key to make a
selection. Return to the running program by selecting resume
program or pressing the Stop key. If you do not make a selection,
the sampler automatically resumes the original sampling
program five minutes after the last key was pressed.

STOP PROGRAM
RESUME PROGRAM
VIEW DATA
GRAB SAMPLE
