Power Supply; Mains Operation; Battery Operation; Installing Batteries - Omnitronic MOM-10BT4 User Manual

5 Power Supply

The unit can be operated with mains voltage and for mobile use via two rechargeable batteries (optional).

Mains operation

To operate the unit via the mains, connect the mains cable provided to the power input and to a mains
socket (230 V~/50 Hz). When the unit is connected to the mains, the automatic charging for the rechargeable
batteries is always active (the battery indicators light) even if the unit is switched off. It is not necessary to
switch on the unit for recharging; however, it can be operated during the recharging process. Once the
recharging process has been completed, the FULL LED will light up continuously.
Note
To prevent unnecessary power consumption, always disconnect the mains plug from the mains socket if the
unit is not used for a longer period.

Battery operation

During battery operation, the battery indicators will indicate the charging state of the rechargeable batteries
in five steps. When capacity decreases, the green LEDs go out one by one. If only the LOW LED lights the
remaining battery capacity is low. Then connect the device to the mains power to charge the batteries. Prior
to operating the PA system off mains for the first time, the batteries must be fully charged. Charging time is
between 4 and 6 hours. If the batteries are charged, the PA system can be used 6 to 8 hours. Always switch
off sources such as Bluetooth receiver, CD/MP3 player and wireless modules if they are not used in order to
battery extend life.
Notes
To prevent damage to the batteries due to deep discharge and to prevent a reduction of their lifetime, please
observe the following notes:
• Always fully recharge the batteries prior to initial operation and after longer storage.
• When the LOW LED starts flashing, the batteries are almost discharged and should be recharged as soon
as possible.
• Fully recharge the batteries prior to longer storage and at least every month during storage.

Installing batteries

Switch off the device and disconnect it from the mains before opening any covers.
For battery operation, two optional 12 V, 7 Ah batteries are required. The batteries must be inserted in the
battery compartment at the front. Only use the accessory batteries which meet the technical requirements.
Follow the steps below to install the batteries:
1) Untighten the two hexagon socket head screws at the lower bottom and remove the battery
compartment cover (fig. A).
2) Untighten the recessed head screw of the fixing plate inside the battery compartment and remove the
plate (fig. B).
3) The power supply cables are color-coded and equipped with blade receptacles. Connect each battery to
the cables observing the correct polarity (red = positive pole, black = negative pole).
4) Replace the fixing plate and the battery compartment cover (fig. C).
A
RISK OF ELECTRIC SHOCK!
B
37 • EN
C