MiniRAE Lite User’s Guide
Adjusting The Pump Stall Threshold
If the gas inlet is blocked but the pump does not shut down, or the
pump shuts down too easily with a slight blockage, the pump stall
threshold value may be set too high or too low.
Use the following steps to adjust the pump stall threshold:
Pump High
In Diagnostic Mode, press the [MODE] key until “Pump High” is
displayed. The pump shows the maximum, minimum, and stall values
for the pump at its high speed.
Block the gas inlet and watch the pump current reading (labeled “I”)
increase. Write down the blocked reading. If the pump current
reading does not increase significantly (for example, more than 10
counts), then there may be a leak in the gas inlet or the pump is weak
or defective.
Use the [Y/+] or [N/-] key to increase or decrease the stall value until
it is the average of the maximum block count and the maximum idle
count.
Press the [MODE] key to exit this display.
Pump Low
In Diagnostic Mode, press the [MODE] key until “Pump Low” is
displayed. The pump shows the maximum, minimum, and stall values
for the pump at its low speed.
Block the gas inlet and watch the pump current reading (labeled “I”)
increase. Write down the blocked reading. If the pump current
reading does not increase significantly (for example, more than 10
counts), then there may be a leak in the gas inlet or the pump is weak
or defective.
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Содержание MiniRAE Lite
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