9
FACE OF FLOATING SEATS.
4. Apply a thin coating of light oil (not grease) to the shaft
and inside of bellows then slide the seal gland assembly
(56) onto the shaft, followed by the gland gasket (60),
then the seal face carbon (F), with retainer (G) and
bellows (J). It may be necessary to use a piece of tubing,
slightly larger than the shaft, to push the bellows and
retainer onto the shaft. Apply pressure only on the “tail
section” of the bellows and retainer. Next, place the
spring (H) over the fi rst section of the seal already on the
shaft, then slide the second bellows, retainer and seal
face carbon onto the shaft.
5. Next, place the seal head (49) over the shaft with slots
for bolts (209) and nuts (210) on the horizontal
centerline. The holes in the fl ange of the seal head
should be in line with those of the support head. Insert
casing cap screws (215) through holes in the support
head and seal head and position gasket (73) on seal
head. Complete assembly of liquid end as described in
Section “K”.
O - LOCATING TROUBLE
1. No Liquid Delivered
a. Wrong direction of rotation
b. Speed too low - Check with revolution counter
c. Discharge head is too high
d. Impeller or pipe lines plugged
e. Pump not primed
f. Suction lift too high, over 15 feet (check with
vacuum gauge)
2. Not Enough Liquid Delivered
a. Discharge head higher than anticipated
b. Speed too low (check with revolution couter)
c. Air leaks in suction pipe or stuffi ng box.
d. Suction lift too high, over 15 feet (check with
vacuum gauge)
e. Impeller partially plugged
f. Not enough suction head for hot water
g. Mechanical defects
1. Impeller worn or damaged
2. Casing worn
h. Foot valve too small
i. Foot valve not immersed deep enough.
3. Not Enough Pressure
a. Air in water
b. Mechanical defects
c. Impeller diameter too small
d. Speed too low
4. Pump Works for a while, then Quits
a. Leaky suction line
b. Suction plugged
c. Suction lift too high, over 15 feet (check with
vacuum gauge)
d. Air or gas in liquid
5. Pump Takes Too Much Power
a. Speed too high
b. Head lower than rating
c. Liquid either viscous or heavier than water, or
both.
d. Mechanical defects
1. Shaft is bent
2. Impeller binds in casing
3. Stuffi ng box packing too tightly adjusted.
When ordering repairs, refer to drawing and give
information stamped on nameplate which is:
Figure Number, Pump Size and Serial Number. Unless
we have this information, we cannot identify pump and
guarantee the repairs to fi t.
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