M
ECHANICAL
D
ESIGN
S
PECIFICATIONS
Frame I
Frame II
Frame III
Direction of Rotation
CW
CW
CW
(viewed from coupling end)
Corrosion Allowance-Casing
0.125”
0.125”
0.125”
Shell (.047” min wall thickness)
.010” (Hastelloy - C)
.010” (Hastelloy - C)
.010” (Hastelloy - C)
Impeller Balance: Standard
Single Plane Dynamic Balance
Magnet Assembly Balance: Standard
Double Plane Dynamic Balance
Flanges
ANSI Class
150
150
150
Facing: Standard
F. F.
F. F.
F. F.
Optional
R. F.
R. F.
R. F.
Finish
125 Ra
125 Ra
125 Ra
Outer Bearings (Ball)
Radial
6210 -2 RS
6012 -2 RS
6012 -2 RS
Thrust
6305NR -2 RS
6307NR -2 RS
6307NR -2 RS
Lubrication
Grease - Lube for Life
Grease - Lube for Life
Grease - Lube for Life
Internal Bearings
Silicon Carbide vs.
Silicon Carbide vs.
Silicon Carbide vs.
Silicon Carbide
Silicon Carbide
Silicon Carbide
Magnets
Samarium Cobalt
Samarium Cobalt
Samarium Cobalt
Hydrostatic Test Pressure
430 psig
430 psig
430 psig
Minimum Operating Temp.
0˚F
0˚F
0˚F
Maximum Operating Temp.
⁄
350˚F
350˚F
350˚F
Maximum Working Pressure
⁄
@ 100˚F
Minimum Viscosity
0.3 Cp.
0.3 Cp.
0.3 Cp.
Maximum Viscosity
300 Cp.
300 Cp.
300 Cp.
Maximum Solids Size
100 Micron
100 Micron
100 Micron
Maximum Solids Content
1.5%
1.5%
1.5%
Pump Shaft Dimensions:
Diameter at Coupling
0.875”
1.125”
1.125”
Diameter at Impeller
0.750”
.750”
1.250”
Minimum Pump Shaft End Play
0.009”
0.009”
0.009”
Maximum Pump Shaft End Play
0.030”
0.030”
0.030”
Maximum Drive Shaft End Play
0.010”
0.010”
0.010”
Casing Bolt Torque
50 Ft.Lb.
50 Ft.Lb.
50 Ft.Lb.
Containment Shell (Clamp Ring)
20 Ft.Lb.
20 Ft.Lb.
35 Ft.Lb.
Bolt Torque
Bearing Cartridge Bolt Torque
15 Ft.Lb.
15 Ft.Lb.
35 Ft.Lb.
REASSEMBLY PROCEDURE
WARNING:
Use only high quality tools.
Wear protective equipment as advised at the beginning of this section.
Use mechanical lifting equipment to lift assemblies and components.
Do not hammer on any parts. Personal injury and/or damage
to equipment may occur.
Use only Dean Pump Division of Met-Pro Corporation parts.
Do not attempt to manufacture parts or modify Dean Pump
parts in any manner. Death, personal injury, and/or damage
to equipment may occur.
WARNING—EXTREME HAZARD TO PERSONS WITH PACE MAKERS:
DO NOT WORK IN CLOSE PROXIMITY WITH UNASSEMBLED OR
DISASSEMBLED MAGNETIC PARTS WITHOUT FIRST CONSULTING
YOUR PHYSICIAN. IT IS POSSIBLE THAT THE STRONG
MAGNETIC FIELD ASSOCIATED WITH THESE PARTS COULD
RESET YOUR PACEMAKER HEART RATE OR CAUSE OTHER
SERIOUS PROBLEMS.
CAUTION:
This unit contains powerful magnets. Personal injury
could occur if parts are not adequately restrained when in the
presence of the magnetic field. Remove your watch as the mag-
netic field will ruin it.
Assemble the pump in an area that has been cleared of loose
ferrous articles and particles. A wood bench is the preferred work
top, but a steel bench with a 3/4" plywood board, laid on top,
will suffice.
To assemble the pump, perform the following steps:
a)
Clean all parts thoroughly. Make certain that all ports,
lubrication grooves, and flow passages are completely
clean and free of any debris.
b)
Replace all worn, corroded, eroded, or otherwise deteriorat-
ed parts. Use only new gaskets, new ball bearings, new
O-rings and new tolerance rings.
c)
Replace the frame foot (9) if it was removed.
d)
If the pump is furnished with the optional “Secondary
Containment Seal”, install a new drive shaft O-ring
(77L) into the outer magnet assembly (167) and apply
some light oil to lubricate the O-ring.
e)
Thoroughly clean the outer magnet assembly (167). Be
certain that all ferrous particles are removed. A piece of
masking tape, rubbed “sticky side” across the surface of the
part, is quite effective in removing such particles. Press a
new inboard bearing (25) onto the outer magnet assembly
(167). Press only on the inner race. Support the end of the
outer magnet assembly (167) on a sheet of gasket material
when performing this operation to protect the magnets.
f )
If the pump is equipped with an optional “Secondary
Containment Seal”, install new gland O-rings (324 &
325) into the groves in the gland (13) and lubricate the
O-rings with a light oil. Carefully remove both O-rings
from a new mechanical seal assembly (95), lubricate
them with the special lubricant supplied, and then re-
install them into the mechanical seal assembly. Separate
the stationary portion of the mechanical seal assembly
(95) and carefully push it into the gland (13) with the
polished face exposed. Lubricate the polished face with
a light film of light oil. Place the carbon face of the
rotating portion of the mechanical seal against the
polished face and center it. Press a new lip seal (76)
into the gland (13) with the lip pointed towards the
mechanical seal (95). Lubricate the lip seal (76) with a
light oil. Be sure that the “rotating” portion of the
mechanical seal assembly (95) is centered in the gland
(13). Carefully slide this assembly over the outer magnet
assembly (167) and against the inboard bearing (25).
g)
Insert the outer rotor key (163A) into the keyway in the
drive shaft (29A) and slide the drive shaft (29A) into the
outer magnet assembly (167).
CAUTION:
Do not strike the magnets with the drive shaft
(29A) as you are installing it, the magnetic field will
attract the shaft. A piece of 1/8" thick rubber gasket
sheet cut 3-1/2" by 14" for frames I and II or 4" by
17" for frame III and coiled into a cylinder and then
inserted into the bore of the magnets before installing
the rotor shaft will make this assembly easier, and
reduce the possibility of damage.
h)
Stand the drive shaft (29A) and outer magnet assembly
(167) with the shaft axis vertical and the magnets down,
upon the cupped end of the drive shaft (29) on a non-
magnetic (brass, bronze or 316 S/S) spindle so that the
outboard bearing (25A) can be pressed onto the shaft.
Press a new outboard bearing (25A) onto the drive shaft
(29A) with the snap ring, in its outer diameter, towards the
outer end of the drive shaft (29A). Pressing only on the
inner race, press the outer bearing (25A) against the
outer magnet assembly (167). Place a new bearing lock
washer (31A) onto the drive shaft (29A), screw the
bearing lock nut (31) onto the drive shaft (29A) and
snug against the outboard bearing (25A). Do not
wrench tighten at this time.
i)
Remove the snap ring from the outside diameter of the
thrust bearing (25A). If the pump is furnished with an
optional “Secondary Containment Seal”, lubricate the
O-rings (324, 325) and the inside diameters of the frame
(26) where the "O" rings (324, 325) seal with a light oil.
Carefully slide the outer magnet assembly (167) into the
frame (26) until the snap ring groove in the outboard
bearing (25A) appears on the outboard bearing cover
(28) end of the frame (26). Install the snap ring into the
groove in the outboard bearing (25A).
j)
Tighten the bearing lock nut (31) while holding the drive
shaft (29A) against rotation with a hook spanner in the
keyway of the drive shaft (29A). Bend one of the bear-
ing lock washer (31A) tabs into one of the slots in the
bearing lock nut (31) to keep the nut tight.
Place the outboard bearing cover (28) over the end of the
drive shaft (29A) and bolt it to the bearing housing (26),
tighten the bolts to 20 Ft. Lb. Set this assembly aside and
cover it with a clean cloth to restrict the accumulation of
ferrous particles on the magnet surfaces.
k)
Press the casing cover ring assembly (195) into the
casing cover (22) with the stepped side of the assembly
facing out from the casing cover (22).
CAUTION:
Wear
Pump Sizes
1 x 1
1
/
2
x 6
1
1
/
2
x 3 x 6
1 x 1
1
/
2
x 8
2 x 3 x 6
1
1
/
2
x 3 x 8
1
/
2
2 x 3 x 8
1
/
2
3 x 4 x 8
1
/
2
1 x 2 x 10
1
1
/
2
x 3 x 10
2 x 3 x 10
3 x 4 x 10
4 x 6 x 10
Ductile Iron
250 psig
316 Stainless Steel
275 psig
Alloy 20
230 psig
Ductile Iron
250 psig
316 Stainless Steel
275 psig
Alloy 20
230 psig
Ductile Iron
250 psig
316 Stainless Steel
275 psig
Alloy 20
230 psig
⁄
Refer to Allowable Working Pressure vs Pumping Temperature on page 7.
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