Operation
Series 505G2 SilentFlo™ Hydraulic Power Unit 45
Name and Location Description
Motor Overload- red: Indicates the pump motor has overheated
and an interlock is active.
Motor Sequence
OK/Motor Sequence
Fault
Indicator. Used to indicate if the pump motor sequence is operating
properly.
Motor Sequence OK - gray: Indicates the motor sequence is not in
a fault condition and operating properly.
Motor Sequence Fault- red: Indicates that the PLC commanded the
motor contactor to close but the contactor did not close after a 10
second time period.
Return Filter
OK/Return Filter Fault
Indicator. Used to indicate if the return filter is within acceptable
limits.
Return Filter OK - gray: Indicates the contamination in the return
filter is within acceptable limits.
Return Filter Dirty - yellow: Indicates the contamination in the return
filter is not within acceptable limits. This state will not generate an
active interlock, but alerts the user that the filter requires
maintenance.
The HPU cannot be started with an active return filter warning
Pressure Filter
OK/Pressure Filter
Fault
Part of the Pressure
Filter Option; only
displayed if the
Pressure filter Option
was purchased.
Indicator. Used to indicate if the pressure filter is within acceptable
limits.
Press Filter OK - gray: Indicates the contamination in the pressure
filter is within acceptable limits.
Press Filter Dirt y- yellow: Indicates the contamination in the
pressure filter is not within acceptable limits. This state will not
generate an active interlock, but alerts the user that the filter
requires maintenance.
The HPU cannot be started with an active pressure filter warning.
Screen select buttons These pushbutton/indicators are described in the Main Screen
section; refer to “Main Screen” on page 40.
Operating the HPU Locally or Remotely
The HPU can be operated locally using the controls on the user interface panel or remotely using your
system controller.
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