Start A 4-20 Ma Output Or Relay Test - Hach NA5600 sc Na+ Maintenance And Troubleshooting Manual

1. Push diag, then select PERFORM TEST.
2. Select an option.
Option
REACT SOL
DELIVERY
SAMPLE DELIVERY
CAL STD DELIVERY
CONDITIONING
VALVE
SAMPLE DRAIN
MIXER
STATUS LED
AIR PUMP
SELECT SCRIPT
Start a 4–20 mA output or relay test
Start a 4–20 mA output or relay test to identify if a 4–20 mA output or relay operation is correct.
1. Push diag and select OUTPUTS.
2. Select an option.
Option
TEST 4–20 mA
TEST RELAY
HOLD OUTPUTS
Description
Starts the reactivation solution pump. The reactivation solution flows into the middle
chamber of the measurement cell.
Note: The measurement cell is the clear block where the electrodes are installed.
Sets the sample solenoid valve for the selected channel to open. The sample flows
into the overflow vessel.
Note: If the overflow vessel is full, the level of the water in the overflow vessel will
not change. To drain the overflow vessel, do the SAMPLE DRAIN test.
Note: The CAL STD DELIVERY option is only available on analyzers that have the
auto calibration option.
Sets the calibration solution pump to on. The calibration solution flows into the
overflow vessel.
Sets the conditioning valve to open. The conditioning gas flows into the right
chamber of the measurement cell.
Note: The measurement cell is the clear block where the electrodes are installed.
Sets the drain pump to on. The water in the overflow vessel drains out the chemical
drain tube.
Sets the mixer motor to on. The stir bar in the overflow vessel turns.
Sets the status indicator light to continuously cycle: yellow, red, green.
Note: The AIR PUMP option is only available when the optional cationic pump is
installed.
Sets the cationic pump to on. The cationic pump pushes air into the conditioning
solution (DIPA) bottle. Refer to the Product overview section of the installation
manual to identify the location of the cationic pump in the analyzer.
Note: The SELECT SCRIPT option is for Service use only.
Sets the analyzer to use the normal instrument script or the test script.
Description
Sets the signal (mA) at the selected 4–20 mA output. Measure the current at the
4–20 mA output with a multimeter.
Sets the selected relay to on (energized) or off (not energized). Measure the
resistance across the relay with a multimeter to identify if the relay is open or closed.
Holds the outputs at the last value or sets them to the transfer value. ACTIVATION
—Select LAUNCH to hold the outputs at the last value or set them to the transfer
value. Select RELEASE to let the outputs operate normally. SET OUTMODE—
Select HOLD OUTPUTS to hold the outputs at the last value. Select TRANSFER
OUTPUTS to set the outputs to the transfer value. Refer to the operations manual to
set the transfer value for the outputs. SET CHANNELS—Select ALL to select all of
the channels. Select ANALYZER to select all of the channels for the selected
analyzer.
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