Damcos LPU: Troubleshooting Guide LPU Service Manual
February 2017 SM 8000-100-01 Ed 04
69
Spring actuator do not close by emergency hand pump
operation
Reason: • Spring actuators will not close by changing bulkhead hand pump to close, as there will be no
pressure rise to open the DPCV.
– Close actuator through by-pass valve at hand pump or actuator instead. Close by-pass valve
when the actuator is fully closed.
For KFR
If KFR is emergency opened at the actuator, an opening operation followed by closing the actuator is
necessary. Opening operation can be made by hand pump or remote control.
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