MARMON VITALink MC, Руководство по установке

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RSCC Wire & Cable LLC © 2015 • 20 Bradley Park Road • East Granby, CT 06026 • 800-327-7625 • 800-653-8300 • Fax: 860-653-8321 • www.vitalinkcable.com
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Figure 7. Reel Setup
where the tension is near zero, so that sidewall
pressure will be very low. If not properly utilized,
these devices may cause damage. Therefore,
segmented sheaves should be exposed to allow
for inspection. Take care to avoid exceeding the
cable pulling radius with pulling equipment
(especially at sheaves and rollers).
Setup
Before installation, the installer should determine
that the cable(s) can be installed according to
the designed routing and minimum bending
radius requirements. Precautions should be taken
when routing in close proximity to hot pipes or
other heat sources because of ampacity con-
siderations. The total degrees of bend between
pull points should be minimized and be per the
NEC or CEC where applicable.
Raceways and cable trays should be examined
for acceptability prior to pulling activities.
Permanent supports should be properly installed
to ensure the rigidity of the raceway and cable
tray so neither the raceway nor the cable will be
subjected to damage during the pulling process.
Cables should not be installed in trays that are
utilized to carry or support equipment, piping,
instrument tubing, or other facilities.
Cable should only be pulled into clean raceways
or cable trays. Prior to installing cable, all debris
should be removed. Any abrasions or sharp
edges that might damage the cable should be
removed. Bushings and dropouts should be
installed as required.
Prior to final termination, the ends of cables
located outdoors, in other wet locations, or
where contamination is possible, should be
capped to prevent the entrance of water or
other contaminants. After installation and prior
to final termination, the capped cable ends
should be inspected to see that they were intact
and have not been damaged.
Cable reels should be supported so that the
cable may be unreeled and fed into the race-
way with light braking, so as not to subject the
cable to a reverse bend or overruns as it is
pulled from the reel.
The amount of tension necessary to pull a
cable should be minimized. The required
pulling tension may be reduced by:
• Proper setup of the cable reel assembly (see
Figure 7). The setup should ensure that the
cable is not kinked or bent beyond the mini-
mum pulling radius or subject to excessive
twisting force.