Gardner Denver ELECTRA-SAVER EAYQ E, Руководство по эксплуатации и обслуживанию

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13–10–613 SP Page 60
SHUTDOWN TROUBLESHOOTING GUIDE
All shutdowns are indicated on the keypad by the word “SHUTDOWN” on the top line of the display, and one of the
following messages on the lower line of the display. The red indicator in the Status area will be steadily lit while the
conditions exist, and will flash after the condition has been corrected. Perform service as indicated. Press the
[STOP/RESET] key to clear the shutdown.
Message Action Needed
CHANGE SEPARATOR The differential pressure across the air / oil separator has risen to over 15 psid.
Change the separator to ensure maximum compressor performance.
CHECK CN7 All inputs at connector 7 of the controller are off. The most common cause for
this is that the connector plug has been pulled out. Plug the connector back
in firmly.
CHECK CN8 120 volts has been removed from ALL inputs to connector 8 of the controller.
The most common cause for this is that the connector plug has been pulled out.
Plug the connector back in firmly.
CONTROLLER ERROR The ES+ controller performs several internal diagnostic checks of its own op-
eration. Follow instructions on lower line, or replace if the controller indicates
“REPAIR REQUIRED.”
EMERGENCY STOP The Emergency Stop button has been pressed. Pull it back out to its normal
position. If the button has not been pressed, check that the contact block is
firmly mounted in the right or left (not center) position of the operator. Check
for loose connections which would remove 120 volts from connector 8–8 of the
controller.
EXTERNAL DEVICE 120 volts has been removed from terminal 7 of the terminal strip. This is nor-
mally shipped jumpered directly to terminal 9, but the jumper may be removed
to add a field installed shutdown switch. Reset the external switch.
FAN OVERLOAD The motor overload relay for the fan motor, located within the electrical control
box, has tripped. This indicates high motor shaft load, low voltage, or excessive
imbalance in the incoming power (such as a blown fuse). Disconnect and lock
out power, open the box, and press the reset button – it will click when reset.
Measure motor amps, and take corrective actions to get all currents within the
motor nameplate rating. If the overload relay has not tripped, check for the
cause that 120 volts was removed from connector 8–1 of the controller.
FAN STARTER The controller has attempted to start the fan, but did not receive a return signal
from the starter’s auxiliary contact. If the starter does not pick up when attempt-
ing to start, check that connector 9 of the controller is plugged in firmly, and
check the starter coil. If the starter does pick up, but this message appears,
check that the auxiliary contact block is properly installed on the starter and
wired to connector 8, terminal 3.
FAN STRT CONTACT The controller has attempted to turn off the fan, but is still receiving a return
signal from the starter’s auxiliary contact. Check that the starter operates freely
and that the contact block is properly installed on the starter.
HI SYSTEM PRESS Pressure in excess of the programmed high pressure limit has been detected.
The most likely cause is other, higher pressure compressors on the same air
system; separate these from this compressor unit. Other possible causes are
loose connections to the transducer, electrical noise and transients, or improp-
er setting of the high pressure limit.
HIGH AMP SENSOR The controller is sensing current to the main motor when it is turned off. Check
that the main starter is operating properly. Check for proper installation of the
current transformer and current transducer.