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13-25-600 Page 59
SECTION 7
BELT DRIVE
Proper drive belt tension and alignment are provided at the factory, however, good practice dictates
checking the drive alignment and tension after shipment and before initial start-up.
Sheaves should align straight across the front with a straight edge. See Figure 7-4, page 63 for proper
belt tension.
Excessive belt tension can damage the equipment. Tension the belts as shown
in Figure 7-4, page 63.
REPLACING THE COMPRESSOR BELTS
1.
Disconnect, lockout and tagout the power supply to the starter
2.
Remove the enclosure panel under the control box.
3.
Remove the fan guard and fan orifice.
4.
Remove side door panel.
5.
Loosen bolts holding airend to support, then loosen nut on jackbolts and run jackbolt
down so that airend lowers, loosening the belts.
6.
Remove the belts.
7.
Replace the old belts with new ones. For proper belt life, use only genuine
Gardner Denver belts.
8.
Check the sheave alignment.
9.
Replace the fan orifice (center the orifice around the fan), fan guard and
enclosure panels.
Interference between the fan and the orifice can damage equipment. Be certain
the orifice has even clearance around the fan before starting the unit.
CHECKING BELT TENSION
- Using a spring scale, apply a perpendicular force to each belt at the
midpoint of the span and measure the deflection. Correct deflection force and deflection are shown in
Figure 7-4, page 63. To tighten belts, merely increase the center distance.
NOTICE
When a new set of belts is installed on a drive, the initial deflection force should
be 1/3 greater than shown in, Figure 7-4, page 63. Recheck tension frequently
during the first 24 hours of operation.
Summary of Contents for AirSmart Controller APEX5-15A
Page 11: ...13 25 600 Page 10 Figure 1 2 COMPRESSOR ILLUSTRATION 303ELA797 B Ref Drawing Page 1 of 2...
Page 27: ...13 25 600 Page 26 Figure 4 1 CONTROL SCHEMATIC 300ELA797 B Ref Drawing...
Page 37: ...13 25 600 Page 36 300ELA546 B Ref Drawing Page 2 of 2...
Page 39: ...13 25 600 Page 38 301ELA546 B Ref Drawing Page 2 of 2...
Page 41: ...13 25 600 Page 40 304ELA546 B Ref Drawing Page 2 of 2...
Page 43: ...13 25 600 Page 42 305ELA546 B Ref Drawing Page 2 of 2...
Page 45: ...13 25 600 Page 44 309ELA546 B Ref Drawing Page 2 of 2...