EBARA EFQT3 - Manual (Page 13)

EBARA Fluid Handling 13
When checking alignment, disconnect the
power source to ensure that the pump will
remain inoperative.
Adjusting the alignment in one direction may
alter the alignment in another direction.
Check each procedure after altering
alignment.
Align non-spider type couplings by using a
feeler gauge or taper gauge between the
couplings halves every 90 degrees. The
coupling is in alignment when the hubs are
the same distance apart at all points (see
Figure 6B).
Check parallel adjustment by laying a
straightedge across both coupling rims at the
top, bottom, and side. When the
straightedge rests evenly on both halves of
the coupling, the coupling is in horizontal
parallel alignment. If the coupling is
misaligned use a feeler gauge between the
coupling and the straightedge to measure
the amount of misalignment.
Coupled Drives
When using couplings, the axis of the power
source must be aligned the axis of the pump
shaft in both the horizontal and vertical
planes. Most couplings require a specific
gap or clearance between the driving and
the driven shafts. Refer to the coupling
manufacturer’s service literature.
Align spider insert type couplings by using
calipers to measure the dimensions on the
circumference of the outer ends of the
coupling hub every 90 degrees. The
coupling is in alignment when the hub ends
are the same distance apart at all points
(see Figure 6A).
V-Belt Drives
When using V-belt drives, the power source
and the pump must be parallel. Use a
straightedge along the sides of the pulleys to
ensure that the pulleys are properly aligned
(see Figure 6C). In drive systems using two
or more belts, make certain that the belts are
a matched set; unmatched sets will cause
accelerated belt wear.
WARNING!
CAUTION!
Figure 6A – Aligning Spider – Type Couplings
Figure 6B – Aligning Non-Spider Type Couplings