MAC155 Rev. 12 ©Copyright MAC Instruments 2005. All Rights Reserved.
Pg 30
Table 2 – Main Board Status Indicators
LED LABEL FUNCTION
RUN MODE
STATUS
CAL PUMP
Power to calibration pump status.
“ON” indicates power on to pump.
“OFF” indicates pump power off.
OFF
SMPL PUMP
Power to sampling pump status
“ON” indicates power on to pump.
“OFF” indicates power off to pump.
ON
CASE
HEATER
Power to case heater status.
“ON” indicates power on.
“OFF” indicates power off
(Note, case heater is an option)
ON OR OFF
Case Cool
Power to case cool solenoid status.
“ON” indicates power on.
“OFF” indicates power off
(Note, case cool is an option)
ON OR OFF
Water Level
OK
During normal operation this LED should be
“ON”.
“OFF” indicates water tank needs service.
ON
BLOW BACK
Power to blow back solenoid status.
“ON” indicates solenoid power on.
“OFF” indicates solenoid power off
(Note: blow back solenoid is an option.)
OFF
+5V Supply
This LED will be on when AC power is
present.
ON
+15V Supply
This LED will be on when AC power is
present.
ON
-15V Supply
This LED will be on when AC power is
present.
ON
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