13
IV. System Operation Overview
Operation
MegaTron controllers have two modes of operation, RUN and SET-UP.
RUN
- This mode is for normal operation. In the RUN mode the display will show each system’s parameters.
If an alarm is present the ALARM box will flash how many alarms are present. No settings may be entered or
changed in the RUN mode. Readings are updated every 6 seconds on the screen while in the RUN mode.
SET-UP
- This mode is used to make adjustments to settings and readings on the controller. To access the
SET UP mode from the RUN screen, press the SETUP/RUN key.
Typical Start Up Instruction
Complete all installation steps before beginning this procedure. Ensure that all controlled devices (pumps,
solenoid valves, etc.) are operational and connected to the controller. Open the isolation valves to allow water
to pass through the sample stream assembly. Before beginning the start up procedure, familiarize yourself
with the programming and operation of the system by reviewing the menus available. Use the keys of the
controller to skim through all your options.
A. Calibration
All MegaTron controllers are factory calibrated for temperature, conductivity, pH and ORP. All units are
shipped with the date preset, and the clock set to your current time. These readings and settings should be
verified for accuracy, and adjusted as per the instructions listed below.
1.
Conductivity
- To calibrate the conductivity reading, remove the electrode from the line and wipe the
flat surface with a clean cloth. Re-install the electrode and open the isolation valves to allow a sample
across the probe. Be sure to allow the reading to stabilize for one minute. Select “SYSTEM COND” from
the “CALIBRATION” menu. Then key in the corrected conductivity value. Press ENTER to log in that
reading.
2.
pH
- Under normal operating conditions, pH calibration is achieved using the following steps. From
the “CALIBRATION” menu, select “SYSTEM PH.” Enter the correct pH value. Press ENTER to log in the
new reading.
3.
ORP
- To calibrate ORP, from the CALIBRATION menu select “SYSTEM ORP”. Compare the displayed
reading to the actual system ORP. If these readings do not match, key in the correct ORP value, and
push ENTER.
There are limits to how much the calibration can be adjusted. The instrument will only accept new conductivity
values which are from 1/3 to 8x the present reading. Any entry outside this range will cause a default to the
original reading. If this happens, call 1-800-743-7431 for technical assistance.
Summary of Contents for MegaTron
Page 30: ...30 Notes Common boiler blowdown valve connections ...
Page 31: ...31 Notes ...
