Copyright © 2005  Perimeter Defense Technologies

Can I use a local contractor to install any of your bollard systems?

Yes.  Local Contractors can install the bollard systems.  Engineers at Perimeter Defense
Technologies can assist in developing and designing the system that's right for you.

What are the recommended maintenance schedules for your bollard systems?

As with any mechanical system, high reliability is a direct function of good preventative
maintenance. The power unit, be it hydraulic or pneumatic, requires the most care. The bollards
are relatively maintenance free with replacement of the seal ring being recommended every
30,000 cycles or 6 months. This time period can fluctuate up or down dependant on environmental
conditions of the installation. Changing the seal ring is a simple task that can be accomplished
In less than 5 minutes by removing 7 bolts.

Why are the CPSB Perimeter Defense Technology bollard systems superior to a wedge system?

On many sites, engineers and architects prefer a more aesthetically pleasing approach to
delivering certified protection. In addition, the bollard system is easier to maintain. Seals around each bollard keep the moving parts wiped clean and sealed from environmental contaminants.

What happens if the power goes out?

A battery back-up system keeps the PLC communicating with the bollards so that the bollards can  be placed in the position required by the customer. The amount of air storage in the case of a Pneumatic system or the size of the accumulator in the case of a Hydraulic system will dictate the number of cycles that a system can operate without the power unit running.

What is the required spacing for the 1200A Bollard Systems to obtain DOS K12/Pass Certification?

The spacing for the crash test was 1 meter centers, so technically in order to maintain
DOS certification the bollards should be spaced on 1 meter centers.  Analysis of the data shows
that 96% of the impact was absorbed by the center bollard, therefore should the customer
decide to space the bollards further apart than 1 meter center, the bollards will still stop
considerable kinetic energy.

Why is a pneumatically operated retractable bollard system superior to a hydraulic bollard system?
Allows up to twelve bollards to be operated from one power supply.
Maintenance facilities work more frequently with air compressors than
hydraulic power supplies . Pneumatic systems are environmentally friendly.