Controlled Products Systems Group 222X383 - Manual (Page 63)

Installation and Maintenance Manual
55
D0119, Rev. F
IMPORTANT: DC Powered Gate Operators
The on/off switch on the electric control panel of the drive unit does not disable all DC power to the operator, even if
the AC power has been disabled at its source. The large rotary switch in the DC power supply enclosure must be
switched “off” to disconnect all of the DC power to the unit.
The disconnect in the power supply must be “off” if the AC source power will be absent for more than one week. This
avoids slowly discharging the batteries into the battery charger. Batteries will self-discharge and therefore the DC
power supply must not be stored longer than 6 months without recharging the batteries.
Batteries contain sulfuric acid. If batteries are dripped or damaged, be cautious not to get acid in your eyes, on your
skin or on your clothing.
Be certain to observe polarity when connecting the batteries or adding accessories. Reversed polarity may result in a
non-functional operator or possibly damage a component. Red is (+) positive and black is (-) negative.
Since the electrical current under load is very high, be certain that the minimum conductor size, specified in the
installation instructions, is used for the connection between the battery pack and the operator. If the battery pack is
more than 20 feet from the operator, use a larger wire size according to the distance between the operator and the
batteries.
If shorted, the batteries will generate a very high current. Observe special care when connecting the cables to the
batteries that the polarity is correct. The batteries are connected in a series circuit: Join the positive (+) terminal from
one battery to the negative (-) terminal of the next battery.
Since the operator is intended to run on batteries, control of the load is important. Easier moving gates will drain less
energy from the battery, preserving capacity for more cycles during a power failure.
HySecurity use a permanently sealed type battery which needs no maintenance over its life span. A low voltage
sensing circuit protects the batteries from damage which could be caused by over discharge. The charger
automatically regulates its output to allow high output when the battery is partially discharged. The output will
automatically reduce to zero as the batteries become fully charged.
Batteries have a finite life. As the batteries age, they will lose some of their capacity to store energy. If the total
amount of back-up capacity is critical, plan to replace the batteries after 5 years of use. Properly dispose of, or
recycle, used batteries.
Batteries are rated to perform to capacity at temperatures of 77 degrees Fahrenheit. Below 77 degrees, their “amp
hour” capacity is temporarily reduced. For example, at freezing, the capacity is 75%, at 10 degrees Fahrenheit, the
capacity is 50%. HySecurity insulates the battery pack to guard against this loss. Do not remove any insulation, or the
performance of the system may be adversely affected.
Batteries can be damaged by excessive heat which may shorten their life span. Therefore, do not paint the battery
enclosure a dark color that could cause it to absorb a lot of heat from sunlight.
DC Motors contain carbon brushes which wear over time and must be replaced. Failure to replace the brushes will
result in damage to the DC motor. Brushes should be inspected every 2 years or 250,000 cycles and replaced every 5
years, or sooner in high use and/or severe duty installations.