IM213D-MC Issue 10 © 2017 Page 3 of 8
2. On selecting the ‘Test Volume’ press the blue
Mode
button for 3 secs.
The meter will display ‘PURGE’ and ‘CALIBRATE’
will also start to flash.
3. Purge the system of air by running fluid through
the system.
4. Once purged of air the calibration process can be
started by pressing the blue Mode button.
The unit will display
RUN
and the ’Test Volume’.
E.g.
RUN 100
5. Run the Test Volume through the meter until
stipulated volume has been reached (e.g. 100).
6. Once this volume has been reached press the
blue
Mode
button to stop the test.
The unit will now compare the ‘Measured Volume’
to the ‘Test Volume’ and perform an ‘Auto
Calibration’ if the difference between the two
volumes are within ± 8% of each other.
Note:
If the difference between the two volumes is greater
than ± 8% of each other, the unit will display one of
the following messages..
•
ERROR LOW
•
ERROR HIGH
if these messages are displayed please contact your
Macnaught agent for advice.
Returning to ‘Operation’ Mode
At any stage the unit can be returned to the
‘
Operation
’ mode by pressing the red ‘Reset’ button
for approx. 3 secs.
Any program changes will automatically be saved.
Maintenance Procedures.
4. Remove the rotors (item 6) and inspect the
condition of each.
Also investigate if there is the presence of any
foreign material in the meter body, that may inhibit
the rotors performance
Reassembly
1. Please note, the design of the rotor and shaft
assembly ensures that the rotors can only be
re-installed with the correct orientation. (i.e. with
the magnets being in close proximity to the
Electronic module).
When replacing the rotors the top face of the
rotors should be flush with the sealing face of the
meter body. If they sit higher than the sealing
face remove, turn over and replace.
2. Replace the rotors (Item 6) onto the shafts at 90
degrees to each other (as per diagram below)
and check their operation by turning either of the
rotors.
If the rotors are not ‘
in mesh’
correctly or do not
move freely, remove one of the rotors and replace
correctly at 90 degrees to the other rotor.
Programming Instructions
Disassembly
Ensure that the fluid supply to the meter is
disconnected, and the line pressure is released
before disassembly, with the exception for repair or
maintenance to the LCD or PCB where it is not
necessity to isolate the meter from flow. Refer to the
exploded parts diagram on subsequent pages for
item numbers.
1. Pull off protective boot (item 1) and unscrew the
four retaining screws (item 2) next remove the
Electronic Module (item 3)
2. Check for evidence of moisture into the electronic
housing. If there is evidence of this, check the
condition of the O-Ring (item 4)
3. Check the Rotors (item 6) rotate freely.
4. Replace the 0-Ring (item 7) into the groove of the
Meter Cap (item 8).
5. Replace the Meter Cap onto Meter Body (item 5)
Tighten Meter Cap screws (item 9) in a diagonal
sequence
E.g. 1, 5, 3, 7, 4, 8, 6, 2
6. Place the O-Ring (item 4) into the Electronic
Module (item 3) and mount the Electronic module
onto to the Meter Body
7. Replace and tighten the Retaining Screws (item 2)
in diagonal sequence.
8. Align and push on the protective boot (item 1) onto
the electronic module (item 3).
9. Before returning to service test the meter by
turning the Rotors with your finger. Or applying a
very low air pressure (no more than a good
breath) to the meter
3. To access the Rotor assembly, remove the 8
Meter Cap screws (item 9)
