Micropack FDS303 - Electrical

16
FDS303 Safety and Technical Manual
Rev: 1.7 ECN: 4535 Ref: 3303.0001
FDS303 Flame Detector
This document is strictly private and confidential, reproduction without Micropack approval is prohibited. © Micropack Engineering Ltd, 2018
3.4.2 Electrical
Notes It is advisable to check the detection locations, prior to fabrication of the mounting
supports, as
changes are frequently made during construction at site. Detector cabling
must be segregated from cables carrying high-speed data or high energy and/or high
frequency signals and other
forms electrical interference. The detector requires a clear
unobstructed view of the local hazard. In order to avoid local obstructions, such as pipe-
work and cable trays, a 2m helix should be allowed in the detector cabling. The detector
should only be fitted just prior to commissioning the detector. Experience shows that the
detector can be damaged due to cable testing
operations (Insulation Tests, etc.).
1
Isolate all associated power supplies. Ensure that they remain OFF until required for
commissioning.
2
The threaded flame path of the enclosure cover and body must be protected from
damage during installation. Any such damage can destroy the validity of the enclosure.
3
The electronics subassembly shall be protected from mechanical damage and external
sources of EMI such as X-rays, RFI and electrostatic discharge.
4
The enclosures external earth stud should be connected to a local earth point.
5
Remove the transit plug(s) from the enclosure body gland entries.
6
Fit approved cable glands.