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1. Safety Precautions
Review the following information before installing, servicing, or replacing the TCU or any of its components.
General Precautions
•
Carefully read the installation and wiring instructions before connecting the TCU to its power source.
•
If the TCU is to be installed into an existing control panel, make sure all sources of power are de-energized (including
those fed by external sources) before starting the installation.
•
Do not work on the TCU or connect/disconnect any of its cables during periods of lightning activity.
•
To prevent overheating the TCU, do not operate it in an area that exceeds the recommended temperature range of
-10°C to 60°C (14°F to 140°F). When using the recommended backup battery, the upper temperature limit is 50°C
(122°F).
•
Ensure that the unit is connected to earth ground during normal use.
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Precautionary measures must be observed when installing, operating, and servicing the TCU in order to prevent shock.
•
All wiring should conform to federal, state, and local electrical codes.
•
Read and follow all precautions displayed on the TCU's side-mounted labels.
Connecting/Disconnecting the TCU
When connecting the TCU:
1. Ensure the cables to be connected to the TCU are routed with sufficient strain relief.
2. Integrate all required wires and connect to the TCU.
3. Close circuit breakers as required; the TCU will start up as soon as power is applied.
When disconnecting the TCU:
1. Power down the unit.
2. Remove all sources of power, including those fed by external sources.
3. Remove all cables connected to the TCU including the ground cable.
4. Move the cables ensuring they will not become entangled in or caught on anything in the surrounding area.
Even if the LCD screen and status LED are not lit, assume the TCU is still powered. The TCU may be in the off
state, and AC power may still be present. To remove power, the external circuit breaker must be opened. Note
that TCU power and 3 phase power may be on separate circuit breakers.
D a t a F l o w S y s t e m s , I n c .
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Troubleshooting
