Ravel RE-2504 Installation, Commissioning & Operating User Manual page 24

Verify that wire sizes are adequate for all IDC's loops. Most devices
cannot tolerate more than a 10% I.R. drop from the specified device
voltage.
Adherence to the following will aid in problem-free
installation with long-term reliability:
Like all solid-state electronic devices, this system may
operate erratically or can be damaged when subjected to lightning-
induced transients. Although no system is completely immune from
lightning transients and interferences, proper grounding will reduce
susceptibility. Overhead or outside aerial wiring is not recommended,
due to an increased susceptibility to nearby lightning strikes. Consult
with the Technical Services Department if any problems are
anticipated or encountered.
Disconnect AC power and batteries prior to removing or inserting circuit
boards. Failure to do so can damage circuits.
Remove all electronic assemblies prior to any drilling, filing, reaming, or
punching of the enclosure. When possible, make all cable entries from
the sides or rear. Before making modifications, verify that they will not
interfere with battery, transformer, and printed circuit board location.
Do not tighten screw terminals more than 1.0168 N-m.
Over-tightening may damage threads, resulting in reduced terminal
contact pressure and difficulty with screw terminal removal.
Though designed to last many years, system components
can fail at any time. This system contains static-sensitive
components. Always ground yourself with a proper wrist strap before
handling any circuits so that static charges are removed from the
body. Use static-suppressive packaging to protect electronic
assemblies removed from the unit.
Follow the instructions in the installation, operating, and programming
manuals. These instructions must be followed to avoid damage to the
control panel and associated equipment. FACP operation and
reliability depend upon proper installation by authorized personnel.
RE / DD / UM / 2508 V1.2- 01
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