G16 Smoke Density Monitor
Ver.2.4 – Revision March 2022 41
9 Maintenance
Besides normal cleaning of the lenses, the system does not require any maintenance. Please
follow the instruction to clean the lenses in section 9.1 maintenance instruction.
The lenses can only be cleaned when the boilers/engines stop and there is no ex-
haust gas in the stack.
If you remove the transceiver or the reflector while there is exhaust gas in the stack,
there is a risk that the exhaust gas will come out from the transceiver/reflector unit’s
holes.
We recommend that the purge air system is turned on while you are cleaning the
transceiver and the reflector.
For cleaning the transceiver’s lens or reflector, please do the following steps:
• Loose the ring nut and pull either the transceiver or the reflector toward your- self.
• Clean the transceiver’s lens/reflector with the cleaning pad (part no. 02398).
• Plug the transceiver and the reflector back onto the air module/audit module. See
section 5.2.3 for detailed instructions.
• It is strongly recommended to calibrate the system after cleaning (see chapter 7). How-
ever, exhaust gas (smoke/dust/mist) must not be present in the section between the
optic heads during calibration, i.e. the process to be monitored must be turned off.
Cleaning intervals depend on the amount of soot particles that contaminate the lenses. The
accumulation of dirt on the lenses will result in higher opacity readings and might therefore
give false alarms. Please make sure to set sufficiently cleaning intervals.
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