User manual

Page 170 Maintenance and Troubleshooting – PAT700 Total Organic Carbon Analyzer
Operator Manual Anatel
12.3 Troubleshooting
The PAT700 incorporates extended diagnostic and reporting facility to inform the user about
the nature of a problem.
Alarm codes, with user-initiated diagnostic tests, serve to isolate the source of the
problem.The PAT700 constantly monitors its operation and measurement values for alarm
conditions. See Chapter 7.
Fuse replacement
The analyzer contains two 1.25 A, 250 V EN60127 type T fuses (see Figure 12-3). Fuse
failure usually indicates an equipment problem that requires servicing.
To replace fuses, follow this procedure:
1) Shut off power to the analyzer.
2) Use a 5/16-inch Allen wrench to unlatch the door that contains the display.
3) Unlatch the door and swing it open on its hinges.
4) Twist the fuse holder out using a straight-blade screwdriver.
5) Replace the fuse.
6) Twist the fuse holder in using a straight-blade screwdriver.
Figure 12-3 PAT700 EN60127 type T fuses
Technical support
Technical support engineers can provide high quality advice and recommendations for
applications, product operation, measurement specifications, hardware and software, factory
and customer site training.
Any questionable problems should be referred to Hach and the following information should
be included in any correspondence with the factory:
Power supply wiring compartment
(terminals are behind door)
Fuses