Cleaning; Testing; Operation Test - Macurco CX-6 Manuel D'instructions

Macurco CX-xx Manual (Rev-1.0) Eng

6.2 Cleaning

Cleaning of the external surfaces is best carried out using a damp cloth with a mild detergent or soap. Use a vacuum
cleaner with soft brush to remove dust or contamination under the cover. Do not blow out the sensor with
compressed air.

7 Testing

Using a certified gas with a concentration other than the one listed for this detector
when conducting a calibration verification test (bump test) will produce inaccurate
readings. This means that higher levels of the gas being monitored may be present and
could result in overexposure. For proper use, see supervisor or User manual, or
contact Technical Support at 1-844-325-3050.
All CX-xx units are factory calibrated and 100% tested for proper operation. During normal operation the green
status indicator LED light will be on steady, the fan & alarm relay will be in standby mode and the 4-20 mA output
will be at 4mA (in clean air). The unit also performs a regular automatic self-test during normal operation. If the unit
detects an improper voltage or inoperable component, it will default into Error mode. In this error mode, the Alarm
relay will be activated, the 4-20 mA current loop will go to 24 mA, the unit will display the error code, the green
status indicator LED light will flash, and the buzzer will chirp intermittently. The Fan relay will also engage if the
Trouble Fan Setting Option is set to "ON".
7.1 Testing

7.1.1 Operation Test

Check that the green CX-xx status indicator LED light is illuminated continuously. If not, do not proceed with the
tests. If the unit is in error mode, contact your local representative or Macurco technical service representative for
information on resolving the problem.
1. Remove the single screw in the middle of the front cover of the CX-xx.
2. Remove the front cover.
3. Observe the LED light on the front of the CX-xx.
4. If the light is solid green proceed to step 6.
5. If the green status indicator LED light is off or flashing, refer to the General section above.
6. Press Enter.
7. The CX-xx will step through a cycle test:
a. The display progresses through the bUZ (Buzzer Test) Art (alarm relay test), Frt (fan relay test) then
42t.C and 42t.n (4-20 mA output test). Make sure that the settings are "on" or not disabled "diS".
REV – 1.1
WARNING
Test Description
bUZ Buzzer Test
Art Alarm Relay Test
Frt Fan Relay Test
42t.C 4-20 mA Test for CO
42t.n 4-20mA Test for NO
[34-2900-0512-0 ]
Test Length Display
3 seconds Flashes "bUZ"
5 seconds Flashes "Art"
60 seconds Flashes "Frt"
130 seconds Flashes "42t.C"
130 seconds Flashed "42t.n"
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