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13-20-604 Page 57
TROUBLESHOOTING VOLTAGE PROBLEMS
The compressor package has been designed, built, and tested to operate within one of the following
standard ranges:
200-208 Volts, 60 Hertz
230-240 Volts, 60 Hertz
460-480 Volts, 60 Hertz
575-600 Volts, 60 Hertz
Connection to higher voltages will reduce the life of electrical devices within the compressor package. As
voltages get further above the design range, other symptoms may show up.
High voltages may lead to high motor currents. The overload relay will sense these and shut down the
compressor to protect the motor.
If the control transformer primary fuses blow, check that the transformer is properly connected for the
incoming line voltage.
Operation with lower voltages will reduce motor life and load capacity. As voltages get further below the
design range, other symptoms may show up.
Low voltages may lead to high motor currents. The overload relay will sense these and shut down the
compressor to protect the motor. If voltage is low while the compressor is off, locate and correct the
cause. If the voltage drops low only while the compressor is running, look for poor connections or
undersized wiring.
If any of the starters or contactors within the box chatter, or if the electronic controller drops out while
attempting to start, it is a clear indication that the wiring is inadequate for the compressor. Look for poor
connections or undersized wiring.
NOTICE
Gardner Denver factory remanufactured replacement compressor airend units
are available from your authorized distributor, on an exchange basis, for all
rotary screw compressor units.
Summary of Contents for INTEGRA EFD99E
Page 11: ...13 20 604 Page 10 Figure 1 2 COMPRESSOR ILLUSTRATION 300EFD797 B Ref Drawing ...
Page 30: ...13 20 604 Page 29 Figure 4 3 WIRING DIAGRAM FULL VOLTAGE 308EDE46 A Ref Drawing Page 1 of 2 ...
Page 31: ...13 20 604 Page 30 308EDE46 A Ref Drawing Page 2 of 2 ...
Page 32: ...13 20 604 Page 31 Figure 4 4 WIRING DIAGRAM WYE DELTA 309EDE546 A Ref Drawing Page 1 of 2 ...
Page 33: ...13 20 604 Page 32 309EDE546 A Ref Drawing Page 2 of 2 ...
Page 34: ...13 20 604 Page 33 Figure 4 5 WIRING DIAGRAM LESS STARTER 310EDE546 A Ref Drawing Page 1 of 2 ...
Page 35: ...13 20 604 Page 34 310EDE546 A Ref Drawing Page 2 of 2 ...
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