H Everything Else
H1 Troubleshooting
The Manta 2’s “distributed function” architecture means that all components have roughly the same cost and roughly the
same responsibilities. For instance, replacing the main circuit board (CPU) will not cost you $1000 or more, as it would
for most multiprobes, because it has fewer parts. As a result, it’s easy for you to isolate problems to a component that
is easy to replace, and won’t cost you big bills. Absent problems with cables or your PC, you can quickly determine if
the problem is the CPU or one of the sensors.
Suppose your conductivity reading is suspicious (always reads zero, no reading at all, obviously wrong, etc.). Here’s
your checklist for isolating the problem:
1) Are there any obvious problems, like water leaks, damage to the sensor, etc.?
2) Are you certain of the value of your calibration standard or field sample?
If those questions do not solve the problem, then you can safely deduce that the conductivity sensor must be repaired
or replaced.
Suppose your Manta 2 would not communicate with your PC. Here’s your checklist for isolating the problem:
1) Are you sure that your PC is working correctly? If you have another Manta 2, will it connect to the PC? If you
have another PC, will it connect to the Manta 2?
2) Are you sure your Manta 2 software is correctly loaded in your PC? If you have another Manta 2, will it connect
to your PC?
3) Does the Manta 2’s amber LED (most models) indicate that you have sufficient voltage to operate? If not, is
your cable connected and free from damage? If you have another cable, will it connect your Manta 2?
If those questions do not solve the problem, then you can safely deduce that the Manta 2’s CPU board (the board you
can see through the housing) must be repaired or replaced.
Once you have made the diagnosis, please call or e-mail Eureka – a new part can be delivered to you in a day or two,
and after a few minutes work, your manta 2 will be back in action.
H2 Opening the Manta 2
If you must replace the CPU board or one of the sensors, you must open the Manta 2’s housing:
1) You will need a 3/16” Allen wrench, silicone grease, medium-sized flat-blade screwdriver, small Phillips
screwdriver, mild soap and soft brush, and paper towels.
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