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13–11–602 Page 53
SHUTDOWN TROUBLE SHOOTING GUIDE (Continued)
Message
Action Needed
HIGH OIL PRESS
Pressure in excess of the programmed high pressure limit has been de-
tected. Check for blockages in the oil injection piping. Other possible
causes are loose connections to the transducer, electrical noise and tran-
sients, or improper setting of the high pressure limit.
HIGH OIL TEMP
This indicates that the controller has detected temperature in excess of
the programmed high temperature limit in the oil piping. The most com-
mon causefor this is inadequate package ventilation. Monitor the temper-
ature carefully during restarts after servicing.
HIGH OIL TEMP R
This indicates that the controller has detected a rapid temperature rise in
the oil piping. 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 de-
tected. This shutdown will occur if a loss of pneumatic controls occurs.
Check the inlet valve, all control piping, solenoid valves, and all other con-
trol devices to find the cause for the inlet valve not closing. Other possible
causes are loose connections to the transducer, electrical noise and tran-
sients, or improper setting of the high pressure limit.
HIGH SYSTEM PRESS
Pressure in excess of the programmed high pressure limit has been de-
tected. 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 improper setting of the high pressure limit.
HIGH SYS TEMP
This indicates that the controller has detected temperature in excess of
the programmed high temperature limit at the package discharge. The
most common cause for this is inadequate package cooling. Ensure prop-
er air flow for aircooled units, or adequate cooling water for water cooled
units. Monitor the temperature carefully during restarts after servicing.
HIGH VIBRATION
120 volts has been removed from terminal 7 of the terminal strip. This is
normally shipped jumpered directly to terminal 9, but the jumper may be
removed to add a field installed shutdown switch. Reset the external
switch.
HIGH WATER LEVEL
120 volts has been removed from terminal 2 of the terminal strip. This nor-
mally indicates that a high water level in the reservoir has opened switch
LS3 of the float switch assembly. Check that the drain is clear and that
the drain solenoid valve is functioning properly. This may also indicate a
loose connection along wire 2.
LOW DISCH TEMP
The temperature, as measured at the airend discharge, has fallen below
freezing. Repair room heating to prevent further damage to the unit.
LOW OIL PRESSURE
The controller has attempted to run the oil pump, but the oil pressure is
not adequate for proper lubrication. If the fan and pump do not start when
attempting to start the compressor unit, check the three fuses mounted
on the small starter. If the pump is starting before this shutdown occurs,
check for proper rotation, adequate oil fill, and blockages or leaks.
LOW OIL TEMP
The temperature, as measured in the oil piping, has fallen below freezing.
Repair room heating to prevent further damage to the unit.
LOW SYS TEMP
The temperature, as measured at the service connection, has fallen below
freezing. Repair room heating to prevent further damage to the unit.
Summary of Contents for TWISTAIR EWDQ D
Page 14: ...13 11 602 Page 4 FIGURE 1 6 AIR WATER SCHEMATIC FIGURE 1 7 OIL SCHEMATIC...
Page 17: ...13 11 602 Page 7 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Page 18: ...13 11 602 Page 8 DECALS 216EAQ077 206EWD077 222EAQ077 221EAQ077 208EAQ077...
Page 35: ...13 11 602 Page 25 FIGURE 4 2 FLOW CHART FOR SET UP PROGRAMMING...
Page 44: ...13 11 602 Page 34 FIGURE 4 6 CONTROL TUBING SCHEMATIC 206EWD797 A Ref Drawing...
Page 48: ...13 11 602 Page 38 FIGURE 4 10 WIRING DIAGRAM FULL VOLTAGE 202EWD546 REF DRAWING...
Page 49: ...13 11 602 Page 39 FIGURE 4 11 WIRING DIAGRAM WYE DELTA 203EWD546 REF DRAWING...
Page 50: ...13 11 602 Page 40 FIGURE 4 12 AUTO SENTRY ES CONTROLLER DISPLAY...
Page 53: ...13 11 602 Page 43 FIGURE 5 2 FLOW DIAGRAM AIR COOLED 202EWD797 B Ref Drawing...
Page 54: ...13 11 602 Page 44 FIGURE 5 3 FLOW DIAGRAM WATER COOLED 203EWD797 A Ref Drawing...
Page 68: ......