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Service information may also be displayed while the compressor is running. Press the [+][-] keys to
display the following:
1. Est. hours till next recommended oil change
2. Hours till next recommended oil filter change
3. List of any active advisory messages
If no keys are pressed for 5 seconds, the display will revert to its normal mode.
The display is also used as a service reminder for normal maintenance items. If service is
recommended, the yellow advisory LED next to the service symbol will come on, and a message will
alternate with the normal lower line display. These messages are intended to advise of conditions which
may lead to a shutdown.
If a protective shutdown occurs, the red shutdown LED next to the shutdown symbol will come on and the
top line of the display will indicate "SHUTDOWN". The lower line indicates the cause of the shutdown.
SERVICE ADVISORIES
The controller turns on an advisory when it detects operation which needs service attention, but does not
warrant shutting down the compressor. Some of these are normal maintenance procedures and are
intended to serve as a reminder to perform routine service. Others are conditions which can reduce the
maximum compressor performance. It will remain in effect until reset. Check the display during routine
inspections and perform maintenance as suggested. Refer to the troubleshooting section for detailed
information about each advisory.
Temperature advisories may be cleared while the unit is running by simply pressing the [ENTER] key. To
reset the service advisories, press the [STOP/RESET] key to stop operation of the compressor. After it
has stopped, disconnect power and service as required. After servicing, restore power and reset the
controller as indicated in the programming / maintenance section below.
PROTECTIVE SHUTDOWNS
The controller will shut down the unit following any fault detected in the following devices. Long-term
problems will have a brief blowdown period before fully shutting down. Following a shutdown, a message
will be displayed, with the top line indicating "SHUTDOWN" and the lower line indicating the cause. The
shutdown light will be steadily lit if the cause still exists, or will flash if the cause has been cleared. Refer
to the troubleshooting section for detailed information about each shutdown. To resume operation, the
cause of the shutdown must be corrected and the controller reset by pressing the [STOP/RESET] key.
Motor Protective Devices -
Overload heaters are furnished for the starter in the voltage range specified.
There are three (3) overloads in the starter of proper size for the starter and its enclosure. Note that
motor nameplate current must be multiplied by 0.577 for wye-delta starters. The display will indicate that
an overload relay has tripped. The overload relay is reset by pressing the button on the relay itself, then
the controller may be reset. Motor current (amps) and voltage must be measured in the affected motor
wiring to locate the cause for high current. Proper starter coil and contact action is also monitored and
errors in operation will cause a shutdown with the cause displayed as a starter or starter contact error.
High Temperature -
The compressor is protected from high discharge temperature by a thermistor probe
located in the compressor discharge. The controller will shut the compressor down if temperature
exceeds 225
°
F (or as set in setup adjustments) or if rapid temperature rise is detected.
Reservoir/Separator temperature is also monitored, and will provide high temp shutdowns. The location
of the temperature fault will be displayed. Thermistor probes are also checked for open or shorted
circuits, and the display will indicate the location of the defective probe.
Содержание AUTO SENTRY RS2000
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