Goulds Pumps 3501 Mixer - IOM - Manual (Page 20)

Positive Reading - The coupling halves are closer
together on the right side than the left. Correct by
either sliding the shaft end of the driver to the right or
the other end to the left (Fig. 13).
4. Repeat steps 1 through 3 until indicator A reads
.05 mm (.002 in.) or less.
5. Re-check both horizontal and vertical readings to
ensure adjustment of one did not disturb the other.
Correct as necessary.
PARALLEL ALIGNMENT
A unit is in parallel alignment when indicator P (parallel
indicator) does not vary by more than .05 mm (.002 in.)
as measured at four points 90° apart at operating
temperature. Note the preliminary vertical cold setting
criteria,
Table 1.
Vertical Correction (Top-to-Bottom)
1. Zero indicator P at top dead center of coupling
(12 o’clock) half Y (Fig. 11).
2. Rotate indicator to bottom dead center (6 o’clock).
Observe needle and record reading.
3. Negative Reading - Coupling half X is lower than
coupling half Y. Correct by removing shims of
thickness equal to half of the indicator reading under
each driver foot.
Positive Reading - Coupling half X is higher than
coupling half Y. Correct by adding shims of
thickness equal to half of the indicator reading from
each driver foot (Fig. 14).
NOTE: Equal amounts of shims must be added to or
removed from each driver foot. Otherwise the vertical
angular alignment will be affected.
4. Repeat steps 1 through 3 until indicator P reads
within .05 mm (.002 in.) or less when hot, or per
Table 1 when cold.
Horizontal Correction (Side-to-Side)
1. Zero indicator P on the left side of coupling half Y,
90° from top dead center (9 o’clock).
2. Rotate indicators through top dead center to the right
side, 180° from the start (3 o’clock). Observe needle
and record reading.
3. Negative Reading - Coupling half Y is to the left of
coupling half X. Correct by sliding driver evenly in
the appropriate direction (Fig. 15).
Positive Reading - Coupling half Y is to the right of
coupling half X. Correct by sliding driver evenly in
the appropriate direction.
NOTE: Failure to slide motor evenly will affect
horizontal angular correction.
4. Repeat steps 1 through 3 until indicator P reads
.05 mm (.002 in.) or less.
5. Re-check both horizontal and vertical readings to
ensure adjustment of one did not disturb the other.
Correct as necessary.
COMPLETE ALIGNMENT
A unit is in complete alignment when both indicators A
(angular) and P (parallel) do not vary by more than .05 mm
(.002 in.) as measured at four points 90° apart.
Vertical Correction (Top-to-Bottom)
1. Zero indicators A and P at top dead center
(12 o’clock) of coupling half Y.
2. Rotate indicator to bottom dead center (6 o’clock).
Observe the needles and record the readings.
3. Make corrections as outlined previously.
16 3501 IOM 11/10
Fig. 13
Fig. 15
Fig. 14