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b. Test Results
If the correct voltage is obtained, everything is
good up to this point and the problem would have
to be in another area. If you do not receive the
correct measurements, the problem would have
to be in the wires, Power Switch, Power Cord, or
main electrical Power Cord connector (3 pin twist
lock connector).
Check the continuity from the power cord base
connector, through the switch and wiring to con-
nector HN1. Remove the power cord, disconnect
HN1 (black and white wires), and test as shown in
figure 5-2.
a. Battery System Test
1. Disconnect the main power cord and using
a DC voltmeter, test each individual battery at its
terminals. Meter should read 12VDC ± 1V.
2. To accurately test the batteries, they must be
tested under a full load. Disconnect the main power
cord and make sure all other connectors are con-
nected.
3. Turn BATTERY power ON and elevate the
table to its full up position.
4. Continue to press the TABLE UP button on the
pendant control so that the pump motor continues to
run and using a DC voltmeter, check the voltage drop
of each battery individually. See figure 5-3.
5. Meter should read 12VDC ± 1VDC.
Figure 5-2. Base Connector to HN1 Continuity Test
5-4. Batteries
The BATTERY operating mode is powered by two
12 volt batteries connected in series to provide the
24 volt operating power.
The battery system voltage should be 24VDC at a
range of 22VDC to 26VDC. If the battery charge
level falls below 23.5 volts the BATTERY operation
indicator on the pendant control will blink indicating
that the batteries require recharging. The built-in
charging system automatically keeps the batteries
at the proper charge level when the AC120V oper-
ating mode is ON. The charging system will oper-
ate while the table is being operated in the AC120V
mode.
Figure 5-3.
b. Test Results
A reading of 11 volts or below indicates the battery
needs charging.
After batteries have been fully charged, repeat the
full load test. If either battery's voltage drops below
11VDC it should be replaced.
82206-502
BLACK
WHITE
HN1
BASE
CONNECTOR
2
82206-503
BATT
1
BATT
2
+
-
+
-
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