RFL 9780 RFL Electronics Inc.
March 10, 2000 3-3 (973) 334-3100
3.3.2 INTERCONNECTED CHASSIS INSTALLED IN RACK OR CABINET
Systems mounted in racks or cabinets at the factory are to be placed in position and then bolted to the
floor or wall, as appropriate, to secure the equipment in place. The type of hardware used will depend
upon the particular surface to which the rack or cabinet is being mounted. Because of this, mounting
hardware is not supplied with the rack or cabinet.
3.3.3 INTERCONNECTED CHASSIS MOUNTED ON SHIPPING RAILS
Equipment to be installed in a rack or cabinet at the customer's site is mounted on shipping rails at the
factory. To remove the shipping rails and mount the equipment, proceed as follows:
1. Place the equipment as close to the front of the rack or cabinet as possible, with the rear panels
of the equipment facing the front of the rack or cabinet.
2. Remove all the screws securing the shipping rails to the equipment.
3. Slide the equipment into the rack or cabinet.
4. Install and tighten screws to all panels to secure the equipment in place
3.4 VENTILATION
The specified operating temperature range for RFL 9780 equipment is -20
o
C to +60
o
C (-4
o
F to +140
o
F).
Operation at higher temperatures may affect system reliability and performance. Systems installed in
enclosed cabinets should be ventilated to keep the temperature inside the cabinet within limits. To
insure adequate ventilation, leave several inches of space above and below each RFL 9780 chassis
when mounted in a rack or cabinet.
CAUTION
DURING NORMAL SYSTEM OPERATION, THE SWITCHING OF RELAY
CONTACTS CAN PRODUCE VOLTAGE SPIKES. THESE SPIKES CAN TRAVEL
DOWN THE RELAY OUTPUT LEADS AND INDUCE CURRENTS IN OTHER
LEADS. THESE INDUCED CURRENTS CAN RESULT IN FALSE TRIPS. TO
REDUCE THIS POSSIBILITY, USE A SHIELDED TWISTED PAIR FOR EACH
INPUT LEAD, AND GROUND THE SHIELD AT THE RFL 9780 CHASSIS ONLY. AS
AN ADDED PRECAUTION, DO NOT BUNDLE INPUT, OUTPUT, AND POWER
LEADS INTO THE SAME HARNESS, AND KEEP THEM AS FAR APART AS
POSSIBLE
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