Where do I find important instrument information?

In the Control screen, all important instrument information is shown (e.g. battery voltage, sensor values, serial number, next service date, operation hours, etc.)

How long is the life span of the sensors?

The life span depends on the operating hours and the instrument equipment. The life span of the toxic sensors (CO, NO, SO2, NO2) is affected by high gas concentrations or insufficient purging. The life span for these sensors is on average 3 years. The life span of the O2 sensor is independent of the operating hours and amounts to approximately 2 years.

Which sensors can I exchange?

The following sensors are exchangeable:
- O2 sensor
- CO sensor (pre-calibrated available)
- NO sensor (pre-calibrated available)
- NO2 sensor (pre-calibrated available)
- SO2 sensor (pre-calibrated available)
- CxHy sensor

The instrument shows the error message "O2 sensor 0 mV"

The O2 sensor must be changed

O2 sensor is reading higher/lower than expected

Check all connections for air leaks and check mV reading within Control screen (call ECOM Service Dept. or consult manual to find out mV range for your sensor)

All sensors are reading normally except CO is at 0ppm

Check tubing around NOx/SOx filter tube for kinks

The instrument shows the error message "T-Gas" or "T-Air"

Possible reasons could be:
- Cable is broken (at the plug)
- T-Air sensor error – check all connections
- T-Gas sensor error – check all connections
- Thermocouple is defective
Note: The error messages can be ignored on newer models by pressing  or ESC. Calculations that rely on these temperatures will not display

The instrument shows wrong or inaccurately CO2 values

Possible reasons could be:
- O2 is defective
(CO2 values are calculated from O2 value)
- Pump is not working correctly
- Air leakage in the gas path
- Peltier cooler is clogged

The analyzer cannot be switched on

- Check the main power cable or external power pack connection
- For J2KN Series only, check the fuse (located inside the power socket)
- Recharge the batteries for a minimum of 8 hours
(Battery could be completely discharged)

The analyzer does not print

-Check whether the printer paper is correctly inserted.
-Make sure that the printer is clean (no chads in the drive).
-Check if printer ribbon is locked into place and replace if necessary (not applicable for a thermal printer).

Can I change the printout?

Yes, if you have an EN2, CL, or newer J2KN Series analyzer. This is located in Adjustments -> Internal -> Printout (for CL, it is Adjustment -> Printout)

Pump flow seems too low

Check all hose connections for splitting or cracking and check gas cooler for blockage

The water is not pumping out of the water trap bowl
(not applicable to CN & CL)

Check that the peristaltic pump is turning and check hose connections. Also remember that the water level must reach the sensing electrodes before the peristaltic pump is triggered

Analyzer powers up and then immediately says "Unit switch off"

Flip on/off switch 15-20 times to clean contacts on switch (for AC, A-PLUS, KL, & J2KN Series)

No flow is getting to the sensors

Check all connections and bypass the water trap to  pinpoint if the leak is in the water trap

Sensors are not responding

Check mV reading in Control screen (call ECOM Service Dept. or consult manual to find out mV range for each sensor), check all connections, then verify on gas

Analyzer display is blank when I turn it on but the analyzer is clearly powered on

Display contrast may be set incorrectly – press F2 on the J2KN and 9 on the CN many times to see if screen comes back (not applicable for CL & EN2)

My data logger is not working correctly with memory card

Verify that you have a memory card storage of between 32MB and 2GB

I am not able to communicate from my analyzer to my computer using DAS software

Call ECOM for basic connectivity & installation troubleshooting. For error message or advanced help, please contact Ron Boudreaux with Malaquite Corp. at 361-806-2033 & ron.boudreaux@mlqcorp.com