OM POWER OM4000A, Instruction Manual

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4.4. Mains Supply
WARNING!
The power Amplifier OM4000A has to be connected TO THE MAINS WITH BOTH CABLES! The
amplifier reaches optimal parameters in the system with 2 phases. Every phase has to be
able to deliver 3 kVA. If you do not have 2 phases system, connect both mains cords into the
same phase. In such a case the amplifier can´t deliver full power output.
CAUTION
Be sure you got PA with properly terminated line cable, corresponding with your power
system’s outlet. If not, contact your dealer. In such a case you should make the necessary
changes using a licensed electrician.
CAUTION
Be sure that your power system is correctly wired and properly rated! To use adequately
sized and connected grounding system is also very important.
4.5. Cooling
CAUTION
The amplifier must be installed in such a way that free flow of hot air from the tube is
allowed. Do not obstruct air intake and exhaust areas of the PA.
The centrifugal blowers provide the necessary cooling of the amplifier, even during long contests.
The main blower is activated by switching the PA on and it is turned off when cooling is finished
(approx. 1-5 min after switching off the PA depending on the temperature of the tube). The
supplemental fan is turned on depending on the temperature of the air exiting from the amplifier.
It is switched on at 70°C and switched off at 60°C.
4.6. Remote Control
Control of the amplifier is possible remotely by using REMOTE BOX (optional). Connection is
done by REMOTE socket, maximum cable length should be 10 meters.
5. OPERATION
WARNING!
Before switching PA on, make sure that amplifier is grounded, antenna or dummy load is
connected, and line cord is putted to the outlet.