5.2 Manual Operation of Cooling Valve
If the control valve actuator completely fails, the secondary supply temperature can be controlled by manually overriding the
valve actuator as detailed below.
IMPORTANT! Disconnect the valve actuator from the control panel first. Unplug the 4-way connector, terminals 9 to
12 from socket SK8. This ensures that the actuator maintains its manually set position.
Press the internal gear release button down and move the valve handle to the desired position. This allows the CoolChip CDU
600 unit to continue running and providing cooling until the valve actuator can be replaced.
Figure 5.3 Manual Operation of Cooling Valve
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5 CANbus Communication
Troubleshooting
Vertiv™ CoolChip CDU 600 Operation and Maintenance Guide
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