Nautel NX15, Operation And Maintenance Manual

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NX15/NX25 Operations and Maintenance Manual Routine maintenance
Page 3-2 Issue 6.0 2019-01-31
2. Clean the NX15/NX25 using a vacuum cleaner and a soft-bristle brush to remove
loose dirt. Clean, damp rags should be used to remove dirt that cannot be removed
with a vacuum cleaner. Never use compressed air to clean the NX15/NX25.
Checking hardware
All hardware must be checked at least once a year. Thermal cycling from turning the NX15/
NX25 on and off will require more frequent checks.
• To prevent damaging the hardware, ensure that the proper sized tools are used. In
most cases, hardware is metric.
• A mounting surface or terminal that has changed colour indicates a loose hardware
connection.
• Multi-stranded cables installed on terminal strips must be retorqued (See Section 3,
“Wiring/connector lists” on page 3-1 in the Troubleshooting Manual for torque require-
ments).
Battery replacement
The NX15/NX25's Control/Interface PWB contains a battery backup circuit that provides a
memory of alarm occurrences during ac power failure. See “Replacing the Control/Interface
PWB battery” on page 3-6 .
Replacing the air filter
If the air filter becomes damaged or too dirty to clean, replace it as follows:
Interval
As required.
Parts and tools
Replacement air filter and filter coat spray.