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USER'S MANUAL
SECTION 4: SAFETY FEATURES DESCRIPTIONS (CONT.)
TILT SWITCH
The tilt switch automatically turns off the output of
the LR-24 if the LR-24 is tipped too far from vertical in
any direction. The maximum forward tilt is 50 degrees,
backward tilt is 40 degrees, and side tilt is 45 degrees, all
from vertical.
If tilted beyond these limits, an error message is displayed.
This condition is reset by moving to a more vertical
position and releasing and pressing the anode pole switch.
IMMERSION SENSOR
If the lower end of the LR-24 comes into contact with the
water, the output is automatically shut off and an error
message is displayed (
Fig. 4.6
). This condition is reset by
moving the LR-24 case out of contact with the water and
then turning the power off and back on again. Note that if
the battery compartment has filled with water, it must be
drained and completely dried before resetting the LR-24.
ANODE-OUT-OF-WATER
This feature disables the output of the LR-24 and displays
an error message whenever the anode pole switch is
depressed and less than 30 milliamps (mA) of current is
flowing between the anode and cathode (
Fig. 4.7
). To
restart the LR-24, place the electrode in the water and
press the anode pole switch.
For working in very shallow water, this feature can be
turned off using System Menu 5: Anode-Out-of-Water
Disable (see page 12).
40°
50°
*****ERROR*****
Unit tilted too far
Return to upright
position to clear.
Fig. 4.5
*****ERROR*****
Immersion Detected
turn unit off and
dry before use
Fig. 4.6
*****ERROR*****
Output Current Low
Electrode may be out
of water.
Fig. 5.4
Tilt Switch
NOTE:
This function is reactivated automatically when
power is turned off and back on.
OUTPUT VOLTAGE DETECTOR
This circuit senses voltage between the anode and
cathode of the LR-24 and activates the audio alarm and
a flashing red light if the LR-24 is turned on. Minimum
detection voltage is 30 volts. This will occur whenever 30
volts are present in the water, regardless of whether the
LR-24 is turned on or not.
ELECTRONIC CIRCUIT BREAKER
The input of the LR-24 is protected by an electronic circuit
breaker which shuts off all power to the LR-24 in the event
of excessive battery drain. The breaker trips at an input
current of 27 amps.
Immersion Sensor
SECTION 4