Macurco GD-6 Manuel D'utilisation page 26

Macurco GD-xx Operation Manual
Do not disassemble unit or attempt to repair or modify any component of this
instrument. This instrument contains no user serviceable parts, and substitution of
components may impair product performance.
6 Maintenance
The GD-6 is low maintenance. The unit uses a long-life pellistor sensor that has a 5 year life expectancy. The
detector's performance should be tested regularly by using gas as detailed in the Testing and Field Calibration
sections. All other maintenance and repair of products manufactured by Macurco are to be performed at the
appropriate Macurco manufacturing facility. Macurco does not sanction any third-party repair facilities.
6.1 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.
CAUTION
Avoid the use of harsh cleaning materials, abrasives, and other organic solvents. Such materials may permanently
scratch the surfaces and damage the display window, labels, sensor, or instrument housing.
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 GD-6 units are factory calibrated and 100% tested for proper operation and accuracy of ± 5% LEL. 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".
*Tested at 15% LEL at 68°F to 75°F.
REV – 2.2.0
WARNING
WARNING
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