4
cutter (14) lifts off impeller (9)
and is held from rotation by
pin. Unscrew impeller (9) from
shaft in same manner as
radial cutter (13).
8. Clean all parts thoroughly
before proceeding with
assembly. Replace case (20),
but do not replace cutter ring
(15) at this point.
9. Replace cutter ring (15) and
cutter ring retainer (16). Screw
down with screws (17).
10.Plug pump into power and
operate for a few seconds only
to ensure parts are not rubbing.
Replacing Seal:
1. Drain the oil from the pump by
removing the fill plug (5)
located on the side of the
motor housing (7).
2. Remove the volute and cutters
per the instructions listed
under the replacing grinder
parts section in this manual.
3. To remove the impeller (9),
secure the shaft by a flat
bladed screwdriver into slot on
end of the shaft. Hold a wood
block against the impeller vane
and tap it with a hammer until
it spins off.
4. Remove the seal (24) rotating
elements by sliding the spring
bellows off the shaft, then
using two screwdrivers, slide
the carbon seal assembly off
by prying on the retaining ring.
5. Using a screwdriver, break the
old stationary portion of the
seal (24) to allow for removal.
6. Take the stationary portion of
the new seal (24), and lube the
rubber material with good
quality dielectric oil. Press
the stationary portion of the
new seal into the seal/bearing
plate (21).
CAUTION: Do not reuse old
seal parts. Replace all parts
with new. Mixing old and new
parts could cause immediate
seal failure.
7. Using a good quality dielectric
oil, lube the rubber material on
the carbon seal assembly (24)
and press it on the shaft. Place
the spring bellows on the shaft
as removed.
8. Using a pressure gauge with a
fill stem, pressurize the motor
housing no more than 7 psig
with dried air and check for
leaks. If after several minutes
the gauge reads the same,
the seal is good and you can
continue with assembly.
NOTE: It is normal to observe
some air bubbles in the seal
area initially as the seal seats. If
bubbles do not stop within a few
seconds, the seal is either not
properly installed or is damaged.
9. Reassemble the cutter and
volute as outlined in the
replacing grinder parts section
of this manual.
10.Refill motor housing with
a good quality paraffinic
oil (25). Fill the motor housing
so that the tops of the motor
windings have been covered,
but leave an air gap to allow
for expansion of the oil.
NOTE: When applying power,
be sure the pump is restrained
from turning by holding the
pump at the motor housing, or
by clamping it in a holding
fixture.
WARNING: Severe injury may
result from accidental contact
with moving cutters. Keep
clothing, hands and feet away
from cutters any time power
is connected to the pump.
U.S. GPM
M /HR
3
HEAD
(FEET)
HEAD
(METERS)
0
15
30
45
60
75
90
105
120
10
15
20
25
30
35
40
7.5
0
15
22.5
30
37.5
45
52.5
60
2.5
5
7.5
10
12.5
15
5-3/8"
DIA.
0
5
4-1/4" DIA.
PERFORMANCE CURVE