9
6.0 Maintenance & Troubleshooting
There are no general maintenance requirements for the Model 730 other than periodic zero
adjustment. If the unit fails to operate when received or if the unit appears damaged, notify
Setra Systems or your supplier immediately. Retain packaging materials for inspection. Do
not use if damaged. If the Model 730 is not going to be used immediately then replace the
protective flange cover and store in suitable conditions described in Section 2.
If no obvious damage has occurred, a few simple checks can be made to verify proper
installation. Table 2 shows the solution to common problems with the installation. If none of
these problems/solutions are applicable, then please contact a Setra Systems applications
engineer for further assistance.
Table 2: Common Installation Problems & Solutions
Problem
Cause
Solution
No signal output
Incorrect or no supply voltage
Ensure power supply is used as
specified in Section 3.
Readout display short circuit or
incorrect impedance
Ensure impedance of readout unit is
>10k
Signal output reads over
range
Incorrect wiring
Ensure wiring conforms to diagrams in
Section 3.0
Potential difference between
chassis ground of unit, power
supply and readout/display
Ensure common chassis ground
between unit, power supply, and
display
Signal output reads
under range
Incorrect zero adjustment
Adjust zero per section 5.1
Readout display incorrect impedance Ensure impedance of readout unit is
> 10k
Incorrect wiring polarity to
readout display
Ensure wiring conforms to diagrams in
Section 3.0
Unstable signal supply
Chassis ground not connected
Ensure common chassis ground
between unit, power supply, and
display
Unstable or unregulated
power supply
Use a regulated power supply as
specified in Section 3.0
Electrical noise on chassis ground
Ensure common chassis ground
between unit, power supply, and
display
