Peavey X-Four - Manual (Page 81)

p. 81
power supply
power supply usage
supply identification
The type of power supply can be identified by the model number shown
on the back of the chassis and panel label.
power requirements
The X-Four power supplies have certain electrical requirements for proper
operation. If possible the power supply should be connected to a dedicated
circuit. Should any other appliance on the same circuit draw enough current
to overload the circuit, the breaker or fuse will trip causing loss of power to
the console.
The power switch on the supply front panel is also a circuit breaker; there
is no power fuse.Should the supply ever shut down,or trip at start up,sim-
ply push the switch to the off position and then push on again.
ground linking
SAFETY CONSIDERATIONS —each new power supply is shipped with the AC
third-wire ground connected to the console chassis ground.The connec-
tion is made at the rear of the power supply unit.This is necessary for safe-
ty reasons so that exposed metal parts are grounded. In the event of a live
conductor making contact with the console chassis or the power supply
chassis then the current will flow to ground without a safety hazard arising.
Uninterruptible grounding—in a fixed installation for example,make a con-
nection directly to the console chassis from the safety ground. Disconnect
the ground link on the rear of the power supply.This disconnects console
ground from power supply AC third-wire ground which could possibly
create a hum-loop.
twin-supply operation
When twin-supplies are in use for automatic back-up, then the ground
links on both supplies should be fitted.
In a situation where the safety ground to the console chassis has been con-
nected and the ground path via the power supply is causing a hum-loop,
then disconnect the ground links on both power supplies.
Note the maximum cur-
rent draw specifications
at left.
Be sure that the circuit to
which you connect the sup-
ply can handle the draw.
a
When the console is dis-
connected from the power
supply the chassis ground
connection to AC third-wire
ground is broken and safety
protection is lost.
a
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