Hach NA5600 sc Na+ Maintenance Et Dépannage page 24

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
5.3 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
24 English
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.