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

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13–10–613 SP Page 61
SHUTDOWN TROUBLESHOOTING GUIDE (Continued)
Message Action Needed
HIGH DISCH TEMP This indicates that the controller has detected temperature in excess of the pro-
grammed high temperature limit at the airend discharge. The most common
cause for this is inadequate package cooling. Ensure proper air flow for air-
cooled units, or adequate cooling water for water cooled units. Check for prop-
er oil level, and fill as required. Monitor the temperature carefully during re-
starts after servicing.
HIGH DISCH TEMR This indicates that the controller has detected a rapid temperature rise in the
airend discharge. This normally would indicate a loss of coolant injection into
the airend. Check oil level, and fill if required. Completely check all oil piping,
the filter, and flow controls for blockage or freezing. This may also be caused
by a loose connection at connector 7 of the controller. Monitor the temperature
carefully during restarts after servicing.
HIGH RESVR PRESS Pressure in excess of the programmed high pressure limit has been detected.
This shutdown will occur if a loss of pneumatic controls occurs. Check the inlet
valve, all control piping, solenoid valves, and all other control devices to find the
cause for the inlet valve not closing. Other possible causes are loose connec-
tions to the transducer, electrical noise and transients, or improper setting of
the high pressure limit.
HIGH RESVR TEMP This indicates that the controller has detected temperature in excess of the pro-
grammed high temperature limit at the air / oil separator. The most common
cause for this is inadequate package cooling. Ensure proper air flow for air-
cooled units, or adequate cooling water for water cooled units. Check separa-
tor element, replace non–standard separators with recommended separator.
Monitor the temperature carefully during restarts after servicing.
HIGH RESVR TEMR This indicates that the controller has detected a rapid temperature rise in the
air / oil separator. Use only recommended separators; replace non–standard
separators. This may also be caused by a loose connection at connector 7
of the controller. Monitor the temperature carefully during restarts after servic-
ing.
HIGH VIBRATION 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.
LOW OIL PRESS The controller has attempted to start and load the compressor, but pressure is
not building up in the oil reservoir. This may indicate either a failure of the motor
to turn the compressor, or a failure of the inlet valve to open. If the latter, check
also the wiring and piping to solenoid valves IVO and IVC; these are both turned
on to load up the compressor.
LV RELAY 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.
MAIN OVERLOAD The overload relay for the main compressor drive 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. Check that the programmed
Set Pressure is at or below the compressor nameplate rating. If the overload
relay has not tripped, check for the cause that 120 volts was removed from con-
nector 8 –2 of the controller.