Nautel XR12, Operation And Maintenance Manual

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XR12 Operations and Maintenance Manual Routine maintenance
Page 4-2 Issue 3.1 2013-03-14
Checking hardware
All hardware must be checked at least once a year. Thermal cycling from turning the XR12 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.
Battery replacement
The XR12's control/display PWB contains a battery backup circuit that provides a memory of alarm
occurrences during ac power failure. See
“Replacing the control/display PWB battery” on page 4-3 .
Replacing air filter
In order to maintain your transmitter warranty and prevent premature component failures, replace
your transmitter’s air filter periodically.
Interval
Every six months in typical environments. Every three months in dusty, humid or harsh
environments.
Parts and tools
One replacement air filters.
Procedure
Take the following steps to replace XR12 air filter:
1. Order a new filter. You can order these standard sized filters from Nautel (Nautel Part #
HAM63 or from the manufacturer (3M # 70-0709-8671-9) or obtain them from any local
supplier of HVAC supplies.
2. Unpack the new filter and inspect it for damage.
3. Remove the old filter.