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Maintenance
AirLink 6940XP Operator’s Manual
Maintenance
RKI recommends that our equipment be calibrated a MINIMUM of every 90 days and
STRONGLY advises that calibration be performed every 30 days. Without knowing the specific
application, sensor assembly location, gas exposure and other factors, the company recommends
monthly calibrations – assuming no damage or potential damage has occurred to the sensor and
that there has not been a power outage to the sensor assembly. If damage has occurred or the
power supplied to the sensor has changed, a calibration should be completed immediately.
Scheduled maintenance should include the zero and calibration of the sensor and an alarm test.
See page 35 and page 45 for instructions to perform these procedures.
The sensor head should be kept free of airborne particles, dirt, mud, spider webs, bugs and insects,
and/or any other debris that could potentially cover or coat the sensor. Keeping the sensor head
clear of foreign articles will allow for proper operation of the device. A brief inspection during
scheduled maintenance should suffice, but dependent upon the location and the environment in
which the unit is installed, more frequent inspections may be warranted.
The AirLink 6940XP may be adversely affected by the exposure to certain airborne substances.
Loss of sensitivity or corrosion may be gradual if such materials are present in sufficient
concentrations. The performance of the device may be impaired during operation in the presence
of substances that can cause corrosion on gold plating. Other inhibiting substances are those that
can coat the internal walls of the optical chamber and reduce reflectivity. These include, but are
not limited to, heavy oil deposits, dust/powder, water condensation, and salt formation.
Continuous and high concentrations of corrosive gases may also have a detrimental long-term
effect on the product’s service life. The presence of such substances in an area does not preclude
the use of this device but makes a shortened sensor element lifetime more likely. Use of the sensor
assembly in these environments may require more frequently scheduled maintenance to ensure
safe and reliable system performance.
Troubleshooting
This troubleshooting guide describes symptoms, probable causes, and recommended action for
problems you may encounter with the AirLink 6940XP.
NOTE:
This troubleshooting guide describes AirLink 6940XP problems only. See the controller
operator’s manual for problems you may encounter with the controller.
AirLink 6940XP Fault Codes
Problem
Cause(s)
Solution(s)
F4
Check
Sensor
Board
The control board has lost communica
-
tion with the sensor element or sensor
housing.
1. Replace the sensor element.
2. Replace the sensor housing.
