Operating Instructions

Chapter 4 – Basic Service and Maintenance
Basic Service Information
18
Siemens Industry, Inc. Owner's Manual 125-5070
2015-05-07
Chapter 4 – Basic Service and Maintenance
This chapter describes basic service and maintenance measures you can take when
using a TEC.
You may want to contact your local Siemens Industry representative if a problem
occurs or you have any questions about the controller.
NOTE:
When troubleshooting, record the problem and what actions were performed
immediately before the problem occurred. Being able to describe the problem in detail
is important should you need assistance from your local Siemens Industry
representative.
Basic Service Information
Always remove power to the TEC when installing or replacing it. Since the controller
does not have a power switch, the recommended method of removing power to a
locally powered controller is to turn OFF the power to the 24 Vac transformer. The
recommended method of removing power to a controller on a power cable (even to
service a single controller) is to turn OFF the power at the transformer.
NOTE:
When removing power to a controller to perform maintenance or service, make sure
that the person in charge of the facility is aware of this and that appropriate steps are
taken to keep the building in control.
Never remove the cover from the TEC. There are no serviceable parts inside. If a
problem is found with this device, contact your local Siemens Industry representative
for replacement. An anti-static wrist strap is recommended when installing or replacing
controllers.
Preventive Maintenance
Most controller components are designed so that, under normal circumstances, they
do not require preventive maintenance. Periodic inspections, voltage checks, and point
checks are normally not required. The rugged design makes most preventive
maintenance unnecessary. However, devices that are exposed to dusty or dirty
environments may require periodic cleaning to function properly.