Biamp CPA130 - Manual (Page 10)

8
PRECAUTIONS
Be sure that power to the CPA130 is turned off when making all connections. High voltages can be present at the speaker terminals, and
static pops or broken ground connections on cables can cause speaker damage.
Use speaker wire of sufficient gauge to prevent power loss and damping factor reduction. Larger size wire has a lower resistance and
permits longer cable runs. Use 16 or 18 gauge wire for cable runs up to 20 feet. For runs 20~80 feet, use 14 gauge wire. For runs longer
than 80 feet, use 10 or 12 gauge wire.
Check the AC voltage before connecting the AC cord. The voltage selector is indicated on the rear panel at the power cord receptacle.
The CPA130 is shipped from the factory set for 110VAC operation. If it is necessary to set the AC voltage selector for 240VAC operation,
be sure to replace the AC fuse with the appropriate value.
The High-Pass Filters must be enabled whenever using the CPA130 for driving distributed speaker systems (see Internal Modifications:
High-Pass Filter on page 5).
Never connect the red (+) speaker binding posts directly together. This can result in internal damage to the amplifier.
Before turning power on, set the CPA130 level controls to the fully counter-clockwise (off) position.
The CPA130 is designed to be installed in a standard 19" equipment rack. The amplifiers have cooling vents on both the top and bottom
panels. Do not block the cooling vents in any way. When mounting the CPA130 in a rack, leave at least one rack-space above and below
the amplifier to allow proper air flow. Do not use a CPA 130 in a closed rack. In situations with high ambient temperatures, particularly
where multiple amplifiers are mounted in the same rack, it may be necessary to use fans to cool the rack. Best results are attained if the
fans blow cool air in from the bottom of the rack, up through the amplifiers, expelling the heated air at the top.
If the green LED indicator next to the power switch does not light when the power switch is turned on, turn the power switch off and check
the AC power cord connections. If the power cord connections are complete, but the indicator still does not light, disconnect the CPA130
from AC power and check the AC fuse. If the fuse needs to be replaced, use the same value and type fuse only. If the AC fuse continues
to fail, the amplifier may require service.
Once power is turned on, slowly advance the level controls clockwise. If no sound is heard, turn the level controls back to their original
counter-clockwise position and check to confirm there is an input signal. Also check for proper wiring at all input and output connections,
and verify that the cables being used are undamaged and are in good condition.
If the CPA130 should require service, please contact Biamp Systems Customer Service at 1-800-826-1457 or (503) 641-7287.