4
25
safety glasses, gloves, and a long sleeved shirt during
this operation. Care must be exercised so that the brittle
inner member of the casing cover wear ring assembly
(195) is not broken. Drive the clamp ring dowel (149A)
into the casing cover (22).
l)
Slide a new bearing cartridge (180) into the casing cover
(22) and rotate it until the four bolt holes line up with the
four tapped holes in the casing cover (22). The four holes
are unequally spaced so that the bearing cartridge (180)
will be in correct orientation with the casing cover (22). Be
sure the tapped holes and the cap screws are clean. Apply
two drops of Loctite “Thread Lock” #222 to the threads of
each of the cap screws (180A) and secure the bearing
cartridge (180) to the casing cover (22). Tighten the bearing
housing screws (180A) to 15 Ft. Lb. on Frames I & II which
have 5/16” screws, or 35 Ft. Lb. on Frame III which has
7/16” screws.
m)
Be sure that the pump shaft (29) is clean. Snap new
tolerance rings (200B) into the two grooves in the pump
shaft (29) closest to the larger end of the pump shaft (29).
Rotate the tolerance rings (200B) so that their joints are 180
degrees apart. Press a new journal sleeve (200), slotted end
first, onto the pump shaft (29), against the shaft shoulder,
being careful to align the slot in the journal sleeve (200)
with the keyway in the pump shaft (29). Handle the journal
sleeves (200) very carefully as they are very brittle and
therefore will break easily.
Place a new sleeve gasket (77H), the bearing spacer
(17) and a second sleeve gasket (77H) over the pump
shaft (29). Install two new tolerance rings (200B) into the
remaining grooves in the pump shaft (29). Rotate the
tolerance rings (200B) so that their joints are 180
degrees apart. Press a new journal sleeve (200), slotted
end last, onto the pump shaft (29) being careful to align
the slot in the journal sleeve (200) with the keyway in the
pump shaft (29).
n)
CAUTION:
The inner magnet assembly (175) contains
powerful magnets. Be sure that the inner magnet
assembly (175) is clean. Ferrous particles attracted to
the magnets are very difficult to remove. A piece of
masking tape drawn “sticky side” across the surface of
the inner magnet assembly (175) will help remove parti-
cles. Place the inner rotor key (171A) into the keyway
in the pump shaft (29), being sure that it engages the
slot in the journal sleeve (200). Apply four drops of
Loctite “Thread Lock” #222 to the diameter of the pump
shaft (29) which engages the inner magnet assembly
(171). Carefully slide the pump shaft (29) into the inner
magnet assembly (175) until the shoulder of the pump
shaft (29) seats firmly against the face of the counter-
bore in the inner magnet assembly (175); a light press
may be required. Set this assembly aside, with the shaft
horizontal, until the Loctite dries.
o)
Carefully place a new thrust collar (210), slotted end first,
over the pump shaft (29) and into the inner magnet
assembly (175) positioning the slot to engage the inner
rotor key (171A).
p)
Lubricate the bearings (182), the journal sleeves (200)
and the face of the thrust collar (210) with a light oil.
Slide the pump shaft (29) carefully through the bearings
(182) in the bearing cartridge (180). It is most important
when assembling these parts to assure that the thrust
collar (210) does not move away from its seating face
in the inner magnet assembly (175); therefore, in all
handling of this assembly be sure that the impeller (3)
end of the pump shaft (29) is always kept higher than
the inner magnet assembly (175) end.
q)
Place the handle, described in paragraph b of the
Disassembly Procedures, over the end of the pump shaft
(29) and clamp it into place with the impeller washer
(12A) and the impeller nut (12), or use the optional
eye bolt.
r)
Place a new containment shell gasket (77G) into the
groove in the casing cover (22). Place the containment
shell (150) into position over the bearing cartridge
(180) and place the clamping ring (149) into position,
engaging the dowel pin in the casing cover (22). Apply
two drops of Loctite “Thread Lock” #222 to the threads
of each of the cap screws (149B) and tighten them to
20 Ft. Lb. on Frames I & II which have 3/8” screws, or
35 Ft. Lb. on Frame III which has 7/16” screws, to
secure the clamping ring (149) to the casing cover (22).
s)
If the pump is equipped with an optional “Secondary
Containment Seal”, place a new frame gasket (77K) into
the O-ring groove in the casing cover (22).
t)
Remove the 1/8" thick rubber protective pad, as
described in paragraph g), from the inside of the outer
magnet assembly (167). Clean both the outer magnet
assembly (167) and the containment shell (150) of any
particles which might have been attracted to them, to
prevent damage to the magnets during operation.
Ferrous particles which stick to the magnet surfaces can
be removed by using a piece of masking tape rubbed
“sticky side” across the magnet surfaces.
u)
CAUTION:
Strong magnetic field, parts must be mechanically
restrained to prevent injury or damage.
Stand the frame (26) assembly up vertically on the end of
the drive shaft (29A) and have one man hold it in position
while a second man, using a small hoist, hooked to the
handle or eyebolt described in paragraph q, carefully low-
ers the inner magnet assembly (175) into the outer magnet
assembly (167).
CAUTION:
The outer magnet assembly
(167) will strongly attract the inner magnet assembly (175)
when the magnetic fields approach each other, snapping the
parts together rapidly. Fingers attempting to hold the parts
during this assembly could be severely damaged. The
containment shell (150) must also be carefully centered as it
is lowered into the outer magnet assembly (167) so that it
does not strike and damage the magnets.
v)
Rotate the casing cover (22) until the two tapped holes
line up with the drilled holes in the frame (26). These
holes are unequally spaced so that the parts will locate in
only one position. Install and tighten the two cap screws.
warranty; (IV) any loss or damage to or defects in any Dean
Products resulting from the misuse or improper storage, installa-
tion, or operation thereof; or (V) any loss or damages to or
defects in any Dean Products resulting from any alteration or
modification thereof not expressly authorized and approved by
us in writing. We shall not be liable, directly or indirectly,
under any circumstances for consequential or incidental dam-
ages, including, but not limited, to: (I) any loss of business or
profits; and (II) labor, material or other charges, claims, losses
or damages incurred or suffered from, in connection with or in
consequence of the working upon, alteration, or repair of any
defective Dean Products by persons or firms other than us. Our
liability for breach of warranty hereunder is limited solely to
the repair in our factory or the replacement F.O.B. our factory,
as the case may be, of any Dean Products which shall have
been determined by us, after notice to us and inspection by us
within the warranty period, to be so defective when shipped
by us.
THIS WARRANTY AND THE LIABILITY SET FORTH HEREIN ARE
EXCLUSIVE AND IN LIEU OF ALL OTHER LIABILITIES AND
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
PARTICULAR PURPOSE.
WARNING
Proper storage while not in use and proper installation and
start-up are essential for successful pump operation. Misuse or
improper storage, installation or operation of pumps may result
in serious loss or damage. Dean Pump Division is not responsi-
ble for any loss or damage resulting from causes beyond its
control, and is not liable for charges for work performed or
materials furnished to repair such loss or damage.
ALL INSTALLATION, OPERATION, AND MAINTENANCE
MUST BE DONE BY THOROUGHLY QUALIFIED PERSONNEL
IN STRICT ACCORDANCE WITH THIS MANUAL AND MUST
COMPLY WITH ALL LOCAL, STATE AND FEDERAL CODES.
ONLY DEAN AUTHORIZED SERVICE PARTS SHOULD BE USED
IN THE REPAIR OF THESE PUMPS.
RECEIVING PUMP
When the pump is received from the transportation company, it
should be promptly inspected for damage and such damage
noted on the bill of lading before it is signed. Claims for ship-
ping damage must be filed against the carrier.
Care should be exercised in unloading and handling the pump.
Magnetically coupled pumps quite often contain brittle compo-
nents which can be broken by the shock of mishandling or
dropping of the unit.
STORAGE
Pumps must be properly covered and protected against mois-
ture, dirt, and physical damage during storage prior to installa-
tion. If prolonged storage is anticipated, a heavy protective
coating should be applied to all exposed machined surfaces. A
rust preventative must be used to protect all steel or cast iron
parts. The pump shaft and the motor shaft must be rotated by
hand every three months.
Pumps must also be protected from moisture, dirt, and physical
damage during and after installation while the system is being
completed. Pumps “stored” on their foundations must be com-
pletely checked for proper installation prior to start-up.
Care in storage and installation will preserve the built in
quality of each Dean Product.
