13–10–613 SP Page 34
FIGURE 4–9 – TURN VALVE ACTUATOR
how the turn valve position is controlled during normal
operation.
System Pressure Transducer – This transducer is
connected after the minimum pressure valve. It con-
verts the pressure in the plant air system into an electri-
cal signal for use by the “Auto Sentry–ES+” controller
for modulation and control.
Reservoir Pressure Transducer – This transducer
is connected to the coolant system. Its signal is used
to prevent loaded starts, monitor reservoir pressure,
and monitor the condition of the air/oil separator.
Air Filter Vacuum Switch – This switch is used to
monitor air filter condition and alert the user if the filter
requires service or replacement.
Discharge Thermistor – This sensor is located di-
rectly in the compressor discharge. Its signal is used
to monitor compressor temperature and shut down the
compressor if a coolant problem is detected.
Reservoir Thermistor – This sensor is located near
the separator and is used to monitor temperature and
shut down the compressor if high temperatures are de-
tected.
Emergency Stop Push–Button – This is a main-
tained push–button, and removes power from the con-
troller outputs regardless of controller status. It is lo-
cated on the upper section of the panel, next to the
keypad. This should be used for emergency purposes
only – use the keypad “STOP/RESET” for normal con-
trolled stopping.
Automatic restarting or electrical
shock can cause injury or death.
Open, tag and lockout main discon-
nect and any other circuits before
servicing the unit.
Vibration Switch – The “Auto Sentry–ES+” controller
has one additional input available for dealer or user
installed optional shutdown switches. The switch is
simply wired in place of the jumper between terminals
7 and 9 of the terminal strip. If the contact is opened,
the compressor will be shut down, and will display
“SHUTDOWN – HIGH VIBRATION”.
The vibration shutdown switch is to be mounted on the
compressor coupling cover, and detects an increase in
vibration that could be an indication of impending dam-
age to the unit. The switch actuates when the selected
level of vibration is exceeded.
The switch must be adjusted when the unit is first
installed. Refer to the switch manufacturer’s instruc-
tion manual for complete details.
Optional Switches – The “Auto Sentry–ES+” control-
ler has one additional input available for dealer or user
installed optional shutdown switches. If the contact is
opened, the compressor will be shut down, and will dis-
play a user selectable message (refer to unit setup ad-
justments for list of messages).
Control Transformer – This control device changes
the incoming power voltage to 110–120 volts for use by
all unit control devices. The transformers employed
are usually connectable for several input voltages, re-
Summary of Contents for ELECTRA-SAVER EAYQ E
Page 15: ...13 10 613 SP Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077 ...
Page 16: ...13 10 613 SP Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077 ...
Page 31: ...13 10 613 SP Page 22 FIGURE 4 2 FLOW CHART FOR SET UP PROGRAMMING ...
Page 48: ...13 10 613 SP Page 39 FIGURE 4 13 WIRING DIAGRAM 202EAY546 Ref Drawing ...
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