13–8–612 Page 37
SYMPTOM
POSSIBLE CAUSE
REMEDY
Erroneous Pressure Readings
1.
Electrical noise creating
1.
Make sure transducer wires
[135 – 150 psig constantly].
false readings.
are kept to a minimum length
(9.3 – 10.3 Bars)
and are twisted.
2.
Loose connector.
2.
Measure the DC voltage
between the green and black
wires of the corresponding
transducer at the control
board with zero pressure on
the transducer. If .460 to
.540 volts, replace the plug–
gable connector that con–
nects transducers to the
board.
3.
Bad transducer.
3.
Measure the DC voltage
between the green and black
wires of the corresponding
transducer at the control
board with zero pressure on
the transducer. If below .450
or over .550 volts, replace the
transducer.
Oil leak at the bottom of
1.
Gasket leaking.
1.
Replace the gasket.
the seal housing.
2.
Plug leak.
2.
Repair.
3.
Capscrew leaking.
3.
Repair.
4.
Shaft seal leaking.
4.
Change seal.
Fuse on board blows.
1.
Board damaged by
1.
Remove all power from the
high voltage.
unit by opening the main
disconnect, replace fuse,
energize main power. If fuse
blows – replace board.
Fuse on transformer blows.
1.
Shorted coils on hour
1.
If fuse does not blow, check
meter, starter coil,
for shorted coils.
or blowdown valve.
Gardner Denver factory remanufactured replacement compressor air end units
are available from your authorized distributor, on an exchange basis, for all rotary
screw compressor units.
Summary of Contents for EBB BB-7.5 HP
Page 12: ...13 8 612 Page 2 FIGURE 1 2 PACKAGE COMPRESSOR MOTOR SIDE FIGURE 1 3 PACKAGE BELT GUARD SIDE...
Page 13: ...13 8 612 Page 3 FIGURE 1 4 PACKAGE CONTROLLER END...
Page 16: ...13 8 612 Page 6 DECALS 206EAQ077 212EAQ077 218EAQ077 211EAQ077 207EAQ077...
Page 17: ...13 8 612 Page 7 DECALS 216EAQ077 217EAQ077 222EAQ077 221EAQ077 208EAQ077...
Page 32: ...13 8 612 Page 22 FIGURE 4 7 AUTO SENTRY S SOLID STATE CONTROL TOUCH PAD...
Page 33: ...13 8 612 Page 23 200EBB546 Ref Drawing FIGURE 4 8 WIRING DIAGRAM...
Page 53: ...13 8 612 Page 43 PIPING AND MOUNTING GROUP 213EBB810 B Ref Drawing...
Page 77: ...13 8 612 Page 67 INTEGRATED DRYER ASSEMBLY AND PIPING 301EBB810 A Ref Drawing...
Page 82: ...13 8 612 Page 72 300EBB541 B Ref Drawing...
Page 84: ......
