Gardner Denver INTEGRA AIRSMART EFC99J, Operating And Service Manual, Page: 28 / 75

13-20-600 Page 27
Reservoir Pressure Transducer (Figure 4-1, page 24) - This transducer is connected to the coolant
system. Its signal is used to prevent loaded starts, monitor oil pressure, and to monitor the condition of
the separator.
Air Filter Vacuum Switch (Figure 4-1, page 24) - This switch is used to monitor air filter condition and
alert the user if the filter requires service or replacement.
Machine damage will occur if compressor is repeatedly restarted after any one
of the shutdown modes stops operation of the unit. Find and correct the
malfunction before resuming operation.
Discharge Thermistor
(Figure 4-1, page 24) - This sensor is located directly 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 (Figure 4-1, page 24) - This sensor is located in the reservoir/separator housing
and is used to monitor temperature and shut down the compressor if temperature problems occur at the
separator.
Emergency Stop Pushbutton - This is a maintained pushbutton, and removes power from the controller
outputs regardless of controller status. It is located on the middle section of the control box door, below
the keypad. This should be used for emergency purposes only - use the keypad [STOP/RESET] for
normal controlled stopping.
Automatic restarting or electrical shock can cause injury or death. Open and
lock main disconnect and any other circuits before servicing unit.
Control Transformer – For 575 volt AC units, a control transformer is provided to supply 230 volts AC
input to the power supply. A secondary fuse is provided on the control transformer. Refer to adjacent
labeling for replacement information.
For 230 volt AC units, that can be converted for 460 volt AC operation using conversion kit 313EFC6005,
a control transformer is provided to supply 115-120 volts AC input to the power supply. Two primary and
one secondary fuse are provided, mounted on the transformer. Refer to adjacent labeling for fuse
replacement information.
Fuse Blocks – For except 230 volt AC units, two class CC fuse blocks provide line side protection for the
power supply and control transformer, as applicable.
Power Supply – This device changes the incoming AC supply voltage, or transformer supply voltage, to
24 volts DC for use by all unit control devices.
Terminal Strip - This provides connections for all 24 volt devices not contained within the enclosure.