Virginia Controls, LLC
MH-3000 User Manual, 1_03C10-VC
Page 8
2.
Controller Installation and Wiring
2.1
Controller Installation
2.1.1
Controller Location Selection and Environment
Mount the controller in a location that provides:
•
adequate support for the weight of the controller,
•
adequate lighting for installation and maintenance,
•
convenient access for the routing of required conduits and cables,
•
convenient access to other devices in the machine room,
•
a minimum of vibration (supply additional bracing or reinforcement if required).
For improved controller reliability:
•
Keep the machine room clean.
•
Do not install the controller in a dusty area.
•
Do not install the controller in a carpeted area, or area where static electricity is a
problem.
•
Keep room temperature between 0
C to 50
C (32
F to 122
F), and 95% non-
condensing relative humidity. Extended high temperatures will shorten the life of
electronic components. Provide adequate ventilation or air-conditioning as required
if necessary.
•
Avoid condensation on the equipment. Keep the controller away from sources of
condensation and water (such as open windows) as these can create a hazardous
condition and can damage the equipment.
•
Do not install the controller in a hazardous location and where excessive amounts of
vapors or chemical fumes may be present. A NEMA 4 or NEMA 12 rated enclosure
can be provided if necessary.
•
Make sure power line fluctuations are within
10%.
•
High levels of radio frequency emissions may cause interference with the controller
microprocessor, and produce unexpected results. This could be caused by hand-held
communications devices used near the controller.
•
Long term operation of the controller without the door or cover in place is not
recommended.
