FW Murphy has made efforts to ensure the reliability of the TTD System and to
recommend safe usage practices in system applications. Please note that in any
application, operation and controller failures can occur. These failures may result
in full control outputs or other outputs, which may cause damage to or unsafe
conditions in the equipment or process connected to the TTD system.
Good engineering practices, electrical codes and insurance regulations require
that you use independent external protective devices to prevent potentially
dangerous or unsafe conditions. Assume that the TTD system can fail with outputs
full on, outputs full off or that other unexpected conditions can occur.
Please read the following information before installing the TTD annunciator.
This installation information is intended for all TTD Series models. A visual
inspection of this product before installation for any damage during shipping is
recommended.
Disconnect all power and be sure machine is inoperative before beginning
installation.
Installation is to be done only by qualified technician.
Observe all Warnings and Cautions at each section in these instructions.
Device shall be wired in accordance with Class I, Division 2 wiring methods.
This equipment is suitable for use in Class I, Division 2, Groups B, C and D
hazardous areas.
WARNING – Explosion Hazard – Substitution of components may impair
suitability for Class I, Division 2.
Please contact FW Murphy immediately if you have any questions.
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