If any questions arise pertaining to the drive limitations, consult the manufacturer.
4.4.2 Gear Drive (Couplings)
NOTICE:
The coupling used in an ATEX classified environment must be properly certified.
Remove the guard or guards by referring to the assembly/disassembly instructions. Disconnect motor/
gearbox and the pump/gearbox coupling halves before proceeding with the alignment. First, align the
pump/gearbox coupling then the motor/gearbox coupling. Check both coupling connections for parallel
and angular alignment by either the Dial Indicator or Straight-Edge Method outlined below. Good align-
ment is achieved when the dial indicator readings, for both parallel and angular misalignment, are
0.076mm | 0.003" Total Indicated Reading (T.I.R.) or less when the pump and driver are at operating
temperature (Final Alignment). Figure:
Proper coupling alignment
, describes what to look for.
1. Parallel misalignment
2. Angular misalignment
3. Perfect alignment
1
2
1.
(Motor End) (Gear box end)
2.
(Gearbox end) (Pump end)
Figure 14: Using a dial indicator to check coupling alignment
1.
Mount two dial indicators off one half of the coupling (X) so they contact the other coupling half
(Y).
2.
Check setting of indicators by rotating coupling half (X) to ensure indicators stay in contact with
coupling half (Y) but do not bottom out. Adjust indicators accordingly.
3.
To ensure accuracy of indicator readings, always rotate both coupling halves together so indica-
tors contact the same point on coupling half (Y). This will eliminate any measurement problems
due to runout on coupling half (Y).
4.
Take indicator measurements with hold-down bolts tightened. Loosen hold down bolts prior to
making alignment corrections.
5.
Take care not to damage indicators when moving driver during alignment corrections.
Keep this instruction manual handy for reference. Further information can be obtained by contacting
Goulds Pumps, 240 Fall St., Seneca Falls, New York 13148 or your local representative.
4.4 Drive Alignment Procedures
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
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