
MIZUHOSI 2009
NW0510 Rev. D
22
the 10-Amp motor controller PCB via a data port on the power supply PCB. A current-
sensing circuit switches to DC battery power when it senses no AC power source is
available. The 24VDC battery circuit can power and operate all of the on-board
systems, motors and actuators. When running on DC battery power the power switch
will not illuminate green but LED’s on the hand pendant will illuminate, indicating the
battery circuit powers the table.
7.8 Battery System
The 6800 Allegro
™
Table uses two 12-volt batteries in series to provide 24-volts. When
the battery status LED on the hand pendant is red, the batteries require charging. To
charge, plug power cord into an appropriate hospital grade AC outlet and turn the power
switch to on.
WARNING:
While in storage, the batteries should remain charged for a minimum of three (3)
hours a week. Using the table while on AC power will also charge the batteries.
•
Normal battery operation is approximately 5 hours at 10% duty cycle.
•
If recharge is required, charge a minimum of three hours. A full charge should be
available after 18 hours.
•
If battery fails to hold a charge it should be replaced. Replace only with identical type
and size battery (see Replacement / Spare Parts List).
•
Replace both batteries at the same time. Also replace foam battery blocks on top of
battery.
•
Batteries should be replaced once every five (5) years.
•
Whenever the battery cover is opened, check battery for signs of corrosion. Battery
terminals should be clean and free from corrosion, oil, grease, dirt, or other
contaminants.
•
Battery ordering number: NV0801; failure to use an approved Mizuho OSI battery,
voids warranty and can cause harm to equipment.
1. Turn power switch off, wait 30 seconds for discharge, unplug power cord from wall
outlet.
2. Remove pedestal-end base cover by removing the six screws using 1/8 in hex key.
WARNING:
Disconnect batteries only with power cord unplugged and power switch off.
This symbol indicates the external stud that is at the same potential as the
equipment chassis. If the AC power cable is not connected to an outlet with a
protective earth ground, this external stud should be connected to a protective
earth ground.