EMTEK, LLC - R100 USERS MANUAL / AUG2019.REV01
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7.3
Flow Alarm & Hard Blower Shutdown
7.3.1
AIR FLOW ALARM 5%:
The alarm
may
be turned “ON” or “OFF”. If the alarm is “ON” during a
sample run, and the flow rate that is 5% higher or lower than the set flow rate (e.g., 28.3 or 100 LPM +5%, or 1
CFM) for more than ten seconds, an alarm screen appears stating a Flow Alarm condition exists, and requires an
acknowledgement by pressing the screen, which should be made after the unit is assessed for restrictions (something
blocking the inlet, or exhaust), and corrected. Otherwise, the alarm will reoccur within 10-seconds of the
acknowledgment.
NOTE:
The total time of the last Flow Alarm for the run will be captured in the data for the run, and output on the optional
printer output, or USB (or PC) output.
Fig 7.3.1-Flow Alarm Screen
7.3.2
HARD BLOWER SHUTDOWN
This function
may not
be turned “ON” or “OFF”. When the voltage
requirement substantially exceeds that calibrated for the current flow rate, such as if the inlet, or outlet of the unit
are substantially occluded, and the blower greatly exceeds the “normal” voltage requirement required, the blower
will shut down. The unit may be restarted, but the reason for the event should be investigated, and remediated, if
possible.
