Skytron ELITE 6002, Руководство по обслуживанию

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Page 37
OHM
BLACK
CN15
TO GROUND
ICN1
2
1
N
L
WHITE
ACV
BLACK
(2)
WHITE
(1)
Figure 6-4. CN15 to ICN1 Continuity Test
6-4. 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
3. Use an AC voltmeter capable of measuring
120 VAC and measure the voltage between pins 1
and 2 (black and white wires) located in connector
CN15. See figure 6-3. You should receive line
voltage 120 VAC.
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.
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
connected.
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 contin-
ues to run and using a DC voltmeter, check the
voltage drop of each battery individually. See
figure 6-5.
5. Meter should read 12VDC ± 1VDC.
6002B
Figure 6-3. Connector CN15 Test
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, main
switch, fuses, or power cord.
Check the continuity from the power cord connec-
tor ICN1, through the fuses, switch and wiring to
connector CN15. Remove the power cord, discon-
nect CN15 (black and white wires), and test as
shown in figure 6-4.
DCV
BATT 1 BATT 1
Figure 6-5.
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.