times of the time delays. 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 nor-
mal maintenance items. When these conditions are
sensed, the yellow “ADVISORY” light will come on, and
the message will alternate with the normal lower line
message. These messages are intended to advise of
conditions that require service or may lead to a shut-
down.
If a shutdown has occurred, the display will indicate
“SHUTDOWN” and the cause and the red shutdown in-
dicator will be lit. The compressor may not be operated
until the conditions are corrected and the controller is
reset.
SERVICE ADVISORIES
The AUTO SENTRY-ES controller continually moni-
tors operation of the compressor unit, and will indicate
when service is required. These conditions will not stop
the operation of the compressor unit, but need attention
and service.
Service and Maintenance - These include the
change separator, change air filter, and change oilfilter
messages, which are based on measured pressures or
recommended service intervals. The controller auto-
matically calculates oil change intervals based on actu-
al operating conditions. This allows maximum utiliza-
tion of AEON 9000SP oil. The advisory messages also
indicate low or high temperature operation, if the unit
has operated near its tolerable limits.
Refer to the service instructions in this manual for ser-
vice details in response to these advisory messages.
Clearing Advisories - Temperature advisories may
be cleared while the unit is running by simply pressing
the [ENTER] key. To reset the service advisories --
CHANGE SEPARATOR, CHANGE AIR FILTER,
CHANGE OIL, CHANGE OIL FILTER -- perform the
following steps:
1.
2.
3.
4.
5.
6.
7.
Press the [STOP/RESET] key to stop operation of
the compressor.
Relieve all air pressure.
Disconnect, tag, and lock out power supply.
Perform necessary maintenance, and record iton
maintenance log.
Following service, put the enable switch in the
down, “+” position.
Restore power to the unit. The display will read:
“SHUTDOWN-POWER FAILURE”
(or “READY” if auto-restart is enabled).
Press the [STOP/RESET] key. The display willin-
dicate “READY’ in the lower right hand corner,
13-9/10-641
8.
9.
10.
11.
12.
13.
To
Press [ENTER], The display will read:
“ENTER TO SETUP - AUTO TO SERVICE
Press [AUTO]. The display will read:
“OIL FILTER - HOURS TILL CHANGE
Press [ENTER]. The display will read:
“HOURS TILL NEXT OIL CHANGE
Press [ENTER]. If an advisory is present, it will be
displayed at this time.
Press [ENTER] to clear the advisory. When all
are cleared, the display will read:
“ENTER TO SETUP - RESET TO EXIT”
Press [STOP/RESET] to return to the READY
state.
prevent unauthorized programming, disconnect,
tag,”and lockout power supply and return the ENABLE
switch to the up, SET position. Restore power, press
[STOP/RESET] to place the controller into the READY
state, and select an operating mode to start compres-
sor operation.
PROTECTIVE SHUTDOWNS
The “AUTO SENTRY-ES” will shut down the unit fol-
lowing any fault detected in the following devices, Fol-
lowing 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 steadi-
ly lit if the cause still exists, or will flash ifthe cause has
been cleared. To resume operation, the cause of the
shutdown must be corrected and the controller reset by
pressing the [STOP/RESET] key.
Refer to the service instructions in this manual for addi-
tional details on what service is required in response to
these shutdown messages.
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 which overload
relay has tripped. The overload relay is reset by press-
ing the button on the relay itself, then the controller may
be reset, Measure motor current (amps) and voltage
in the affected motor wiring to locate the cause for high
current. Overload relays provided instandard units are
sensitive to both overload and phase imbalance for im-
proved motor protection.
Proper starter coil and contact action are also moni-
tored and errors inoperation will cause a shutdown with
the cause displayed as a start error.
High Temperature - The compressor is protected
from high discharge temperature by two independent
thermistor probes. One probe is located in the com-
pressor discharge to sense compressor discharge
temperature. The second probe is located at the sepa-
Page 20
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