Installation and Startup of UA 300 D
31
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Version 2.03 27. Juni 2008
12. Press the
ESC
key twice to exit the menu.
13. Press the
ESC
key repeatedly to return to the Main Menu of the CI 3000 Store Computer or AL 300 Operator
Terminal. This completes basic parameter setting on the UA 300 D Case Controller.
4.4
Maintenance and battery replacement
The controller contains a backup battery of Type CR 2450 N, 3V Lithium. The controller must be removed from
the system to change the battery. During this time, control and monitoring of the refrigeration point is disabled.
If the case/coldroom controller is connected via the CAN bus to a higher−level controller, it will no longer be on
the CAN bus. In addition to the precautions directly concerning the refrigeration point, consideration must be
given to the effects on higher−level controllers on the CAN bus.
When changing the battery, the safety rules contained in the Safety and Connection Notes section
must be observed. All connectors may only be connected and disconnected when power is off. Cir-
cuit boards may only be exchanged when power is off. Always take hold of circuit boards at the ed-
ges.
ESD (Electrostatic Discharge) regulations must be observed; see Section 1 Safety and Connection
Notes!
Note when the controller is connected via CAN bus: Removal of the case controller from the CAN
bus generates fault alarm on the higher−level controller (CI 3000 Store Computer or
AL 300 Operator
Terminal). Make sure the alarm is cancelled in due time or the Service Center is advised accordingly
in advance.
4.4.1
Replacing battery on UA 300 D xC
1.
Disconnect the case/coldroom controller or refrigeration point from power.
Cancel alarm on CI 3000 Store Computer / AL 300 Operator Terminal.
2.
Remove connector, remove controller from its support if necessary.
Some connectors may carry 230 V AC power. Connectors should be marked before disconnecting.
3.
Undo the four screws on the front panel and remove the plastic cover by pulling up.
Содержание UA 300 D
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