Critical Environment Technologies FCS - Wet Environment Considerations; EMI and RF Interference Considerations

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Rev. C | 2021.12 FCS - Installation Manual
drilled out as needed. Refer to Section 6.5 Standard Enclosure Mounting Components for
more information.
NOTE: When mounting the enclosure, allow enough room to allow the end user to open the
door fully to access the internal adjustments (23 cm / 9 in of space on the left side of the
enclosure).
When nished installing or servicing it is recommend you perform a test to ensure the unit
and all relays are working properly.
6.4.1 Wet Environment Considerations
If the FCS is to be installed in a potential hose-down application or any application whereby
liquid could be directed towards the buzzer, the FCS should be ordered with an optional
watertight door mounted buzzer (factory installed).
If used in a wet environment application, the conduit hubs entering the FCS enclosure
must be a liquid tight type.
Any water or physical damage to the FCS that occurs from the installer drilling their own
installation holes will not be covered under CETCI’s warranty.
6.4.2 EMI and RF Interference Considerations
All electronic devices are susceptible to EMI (Electromagnetic Interference) and RFI (Radio
Frequency Interference). Our controllers and detectors have been designed to reduce the
effects of these interferences and we meet CSA, FCC and CE requirements for these type of
devices. However there are still circumstances and levels of interference that may cause our
equipment to respond to these interferences and cause them to react as if there has been
gas detected.
There are some installation procedures that will reduce the likelihood of getting faulty
readings:
1. Locate the detectors and controllers out of the way from normal foot trac and high
energy equipment.
2. Conrm the devices are properly grounded using conduit and shielded cabling.
3. Inform operators and technical staff working in the surrounding area to be aware of
these possible conditions and that two way radios, Bluetooth enabled devices, cell
phones and other electrical equipment may interfere with the response of the gas
detectors.