Thermo Scientific Oretronic III, Operating & Service Manual

Page: 37 / 152

Installing the TMD
Thermo Fisher Scientific Installing the TMD 2-9
REC-4105 Rev L
All wiring, except as noted, is the responsibility of the customer. Follow
the field wiring diagram for your system or refer to the Field Wiring
Diagram (D07344A-E001) in Appendix D to connect system wiring to
the CPU board in the control unit.
Be sure to observe the following critical wiring conditions to ensure
proper connection of your detector:
• Ensure main power is OFF.
• High voltage (>30 V) and low voltage (< 30 V) cables must be
routed through different areas of the control unit enclosure (see
Figure 2-2).
• Earth ground all enclosures and conduit. A ground connection
between all conduits is required.
• Stranded, rather than solid, wire should be used. This wiring should
be long enough, and routed, to allow the chassis to be removed from
the front for servicing.
• Connect the shields only where shown.
• Never use a “megger” to check the wiring.
• A readily accessible disconnect device (maximum 20 A) shall be
incorporated in the field wiring. This disconnect should be in easy
reach of the operator and it must be marked as the disconnecting
device for the equipment.
• All conduits should enter the bottom of the enclosure. Do not run
conduit through the top or sides of the enclosure.
Field Wiring the
TMD
WARNING
All wiring must be done in accordance with field wiring
diagrams, the National Electrical Code, and all local
electrical codes.
Do not route coil cables through the same conduit with
power cables or any large source of electrical noise.
Critical Wiring
Conditions