![background image](http://html.mh-extra.com/html/gardner-denver/apex25-30b/apex25-30b_operating-and-service-manual_3577461066.webp)
13-25-608 Page 65
SECTION 8
DRIVE SHAFT COUPLING
SHAFT COUPLING –
The main motor drives
the compressor by means of a curved jaw-type coupling.
Each coupling hub is fixed to the shaft with a set screw and key combination. The motor power is
delivered to the compressor via a single, vibrations damping element
– see Figure 8-1 for the details of
the coupling components. The motor and compressor shafts are aligned with the help of a stiff, cast and
machined housing assembly. The coupling assembly requires no lubrication.
FIGURE 8- 1 - COUPLING COMPONENTS
The compressor starts and stops automatically. Automatic restarting can
cause injury or death. Open, lockout and tag out main disconnect and any
other circuits before servicing the unit.
Coupling Element and Hub Inspection.
1. Rotating machinery can cause injury or death. Open main disconnect, lockout and tagout power
supply to compressor package before working on the electric motor.
2. Remove fasteners securing the coupling guard to access to the coupling area within the adaptor
housing.
3. Inspect the outer surfaces of the hubs and element and check the gap between the hub jaws
–
see dimension
“E” on Figure 8-2. If the gap has increased by more than 2-3mm beyond its
nominal limit of 24/25.8mm, or if damage (e.g., deformation, breakage, extrusion) to the element
is evident in any of its eight (8) outer spokes or damage to the hubs (e.g., wear and tear,
breakage) is evident on its jaws, the components must be removed for a thorough inspection and
replaced.
Summary of Contents for APEX25-30B
Page 11: ...13 25 608 Page 10 Figure 1 2 COMPRESSOR ILLUSTRATION VARIABLE SPEED 304USC797 01 Ref Drawing...
Page 12: ...13 25 608 Page 11 Figure 1 3 COMPRESSOR ILLUSTRATION FIXED SPEED 305USC797 01 Ref Drawing...
Page 27: ...13 25 608 Page 26 Figure 4 2 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 1 of 4...
Page 28: ...13 25 608 Page 27 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 2 of 4...
Page 29: ...13 25 608 Page 28 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 3 of 4...
Page 30: ...13 25 608 Page 29 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 4 of 4...
Page 31: ...13 25 608 Page 30 Figure 4 3 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 1 of 4...
Page 32: ...13 25 608 Page 31 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 2 of 4...
Page 33: ...13 25 608 Page 32 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 3 of 4...
Page 34: ...13 25 608 Page 33 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 4 of 4...
Page 45: ...13 25 608 Page 44 Figure 4 7 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 1 of 3...
Page 46: ...13 25 608 Page 45 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 2 of 3...
Page 47: ...13 25 608 Page 46 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 3 of 3...
Page 51: ...13 25 608 Page 50 Figure 4 8 PIPING AND INSTRUMENTATION ILLUSTRATIONJ 301USC797 C Ref Drawing...
Page 86: ...NOTES...
Page 87: ...NOTES...