Perma Pure Baldwin-Series M8B - Manual (Page 10)

PERMA PURE LLC
Model M8B User’s Manual
Doc. #580: Revision: 000
Page 10 of 22
LED Summary
The controls for the M8 cooler are visible through the main door’s window. The M8 is a two
channel cooler that can flow up to 8 LPM of a gas stream, reducing the dew point to 5°C or less.
There are several indicators and a display to provide operational information on the status of
the cooler. The temperature of either channel can be selected and viewed on the LCD display.
Simply move the toggle switch on the front panel in the direction of the channel, to display the
temperature on the LCD.
Figure 5 - Front display panel
There are 2 sets (one for each impinger) of 3 LED status displays, 1 red and 2 green. These
indicators are arranged vertically on the front of the cooler. See figure 5.
● “Failure” Red LED comes on if the
thermocouple or an electronic controller
component has failed.
● “Slip” Green LED comes on when powered up.
● “Ready” Green LED comes on when the ready
set-point temperature (+10°C) is reached.
NOTE: “Slip” LED is connected to the water slip sensor, which is normally dry on start up. If the
“Slip” Green LED goes out, this indicates water is “slipping” past the heat exchanger. The relay
then shuts off the sample pump so that water is not allowed to reach the analyzers, preventing
damage to the analytical instruments. Steps need to be taken at this time to determine the
cause of the moisture and correct the situation.
The sample pump will begin operating once the green READY indicators are both lit.