Hach EZ Series, Basic User Manual

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Figure 9 Status submenus screen
2. Use the LEFT and RIGHT arrow keys to navigate the submenus.
3. Scroll down to select a component. Push the E button to open the control panel for the selected
component.
4. Based on the analyzer model, do a test on the components in the table that follows.
Component Description
DO (digital output) Sets the digital output to on and off to examine the operation. Set a time (in seconds) and
push
start . The digital output will then be active (on) during the set number of seconds.
Use the pulse option for micropumps. Enter a number of pulses and push pulse .
Note: If a DO is linked to a program, the DO cannot be controlled manually while the program is active.
AO (analog
outputs) Sets the value (mA) at the analog outputs to examine the connection. Enter a value
between 4 and 20 and push the
Accept . The AO output supplies the value as a mA signal.
DI (digital inputs) Shows the digital inputs, their value (True/False) and the programs to which they are
linked.
AI (analog inputs) Shows the analog inputs, their actual values, their status (OK/Alarm), and the programs to
which they are linked. Push
E to control the selected analog input.
The sensors (AI) can be calibrated on the next screen. Select the sensor to start a
calibration. If applicable, enter the values of the pH buffers used to calibrate the pH
electrode.
7.3 Prime the reagents
Prime the reagents during startup and reagent replacement. The prime procedure flushes the
reagent micropump tubing.
1. Push F1 > Method > Priming .
2. Wait until the priming procedure is complete.
Section 8 Operation
Refer to the expanded user manual on the manufacturer's website.
Section 9 Maintenance
D A N G E R
Electrocution hazard. Remove power from the instrument before doing maintenance or service
activities.
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