13-11-607 Page 57
Message
Action Needed
EXTERNAL DEVICE
120 volts has been removed from J1-4 of the expansion board. This is
normally jumpered directly to terminal 9, but the jumper may be removed to
add a field installed shutdown switch. Reset the external switch.
HIGH DIS TEMP R
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. Completely check all water 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 DISCH TEMP
This indicates that the controller has detected temperature in excess of the
programmed 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. Monitor
the temperature carefully during restarts after servicing.
HIGH INJ 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
connections to the transducer, electrical noise and transients, or improper
setting of the high pressure limit.
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
connections to the transducer, electrical noise and transients, or improper
setting of the high pressure limit.
HIGH 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
improper setting of the high pressure limit.
HIGH VIBRATION
120 volts has been removed from J1-4 of the expansion board. This is
normally 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 5 of the terminal strip. This
normally 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 5.
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.
Summary of Contents for PUREAIR EWC99C
Page 7: ...13 11 607 Page 2 Figure 1 2 PACKAGE ILLUSTRATION 307EWC797 B Ref Drawing...
Page 8: ...13 11 607 Page 3 Figure 1 3 AIR WATER SCHEMATIC 308EWC797 F Ref Drawing...
Page 25: ...13 11 607 Page 20 Figure 4 2 FLOW CHART FOR SETUP PROGRAMMING 300EWC1255 Ref Drawing...
Page 38: ...13 11 607 Page 33 Figure 4 4 WIRING DIAGRAM FULL VOLTAGE 305EWC546 B Ref Drawing Page 1 of 2...
Page 39: ...13 11 607 Page 34 305EWC546 B Ref Drawing Page 2 of 2...
Page 41: ...13 11 607 Page 36 306EWC546 B Ref Drawing Page 2 of 2...
