Finish Thompson VKC22 User Manual
VKC22 Series
Sealless, Non-metallic
Vertical Mag Drive Centrifugal Pumps
Installation and Maintenance Instructions
Pat. No. 5,708,313
ASSEMBLY
WARNING: Magnetic field hazard. This pump contains
powerful rare earth magnets. When the pump is disassembled
(not connected to a motor) and the magnets are exposed, these
magnets produce powerful magnetic fields. Individuals with cardiac
pacemakers, implanted defibrillators, other electronic medical
devices, metallic prosthetic heart valves, internal wound clips (from
surgery), metallic prosthetic devices or sickle cell anemia must
not handle or be in the proximity of the magnets contained inside
the pump. Consult a health care provider for specific
recommendations before working with this pump.
PUMPS WITH MOTORS
1. Unpack the pump, the motor, and the mounting hardware
and examine for any signs of shipping damage. If damage is
detected, save the packaging and notify the carrier immediately.
2. The customer can chose to install the pump end into the tank
or lay it on its side prior to the motor installation. An overhead hoist of some sort may be needed to install the motor.
3. Install the coupling insert (item 11 onto the motor coupling
half on the motor shaft. Install the mounting plate o-ring
(item 14) into the o-ring groove on the mounting plate and
lubricate with a chemically compatible lubricant. Insert the
motor / motor adapter flange (items 1 and 3) into the top of
the pump. Note that the splines on the pump shaft coupling
half need to match up and seat into the coupling insert. Once
the coupling has seated, rotate the motor until it is oriented
correctly (avoid locating electrical box by the discharge piping). Insert and tighten the four bolts & washers (items 7, 8,
& 9) down through the motor adapter flange (item 3) into the
mounting plate.
4. Proceed to the “installation “ section of these instructions.
PUMPS WITHOUT MOTORS
1. Unpack the pump, the motor adapter flange, and the mounting hardware and examine for shipping damage. If damage is detected, save the packaging and contact the carrier
immediately.
2. The customer can chose to install the pump end into the
tank or lay it on its side prior to the motor installation. An
overhead hoist of some sort may be needed to install the
motor.
3. Install the motor coupling half (item 10 onto the motor
shaft so that the shaft is recessed below the face of the
coupling half. The correct recessed setting for 100/112
frame, 182/184 frame, and 215 frame motors is .170 plus
or minus .010. For 90 frame motors the recessed setting
is .100 plus or minus .010, and for 132 frame motors, it is
.125 plus or minus .010. Install the key into the key slot
and tighten the setscrews. Install the plastic coupling
insert (item 11 onto the coupling on the motor shaft.
4. Install the motor adapter flange o-ring (item 2) into the oring groove in the motor adapter flange (item 3) and lubricate it with a chemically compatible lubricant. Making sure
the o-ring stays in the groove place, situate the motor
adapter flange (item 3) onto the motor and bolt it down
with the correct hardware (items 4, 5, & 6).
5. Install the mounting plate o-ring (item 14) into the o-ring
groove in the mounting plate and lubricate it. Insert the
motor and motor adapter flange (items 1& 3) into the top
of the pump. Note, the splines on the pump shaft coupling half need to match up and seat into the coupling
insert. Once the coupling has seated, rotate the motor until
it is oriented correctly (avoid locating the electrical box by
the discharge piping). Insert and tighten the four bolts
and washers (item 7, 8, & 9) through the motor adapter
flange (item 3) into the mounting plate.
6. Proceed to the “installation” section of these instructions.
INSTALLATION
MOUNTING
The base plate must be securely fastened so that there is no
vibration when the pump is running.
PIPING TO AND FROM THE PUMP
• Always support the piping near the pump to minimize stress
and strain.
• Minimize frictional losses by increasing the piping size by
one diameter.
• Use a minimal number of bends, keeping any bends within
a distance of ten pipe diameters from the pump.
• Install valve on the discharge lines to control flow. Place
the valve within a distance of ten pipe diameters from the
pump.
• Ensure that the piping is leak free.
1
Maintain a flooded suction at all times. Use a float switch to
turn off the pump at low level
CAUTION: Do not run the pump dry. This pump should
never be started without liquid in the casing as this could
damage the pump. The fluid being transferred by the pump
lubricates the pump components. Even short periods of
running the pump dry could damage the pump. It is
recommended that run dry protection be used. Optional
electrical power monitors are available to help protect
against run dry.
ELECTRICAL CONNECTIONS
1. Perform the motor wiring according to NEC requirements
and local electrical codes.
2. Wire the motor for clockwise rotation when facing the fan
end of the motor.
3. To verify correct motor rotation
a. Install the pump into the system
b. Fully open the discharge valve.
c. Allow fluid to flow into the pump. Do not allow the
pump to run dry, as this may damage to the pump com
ponents.
d. Jog the motor (allow it to run for one to two seconds)
and observe the rotation of the motor fan. Correct ro
tation is clockwise when viewed from the fan end of
the motor. Refer to directional arrow on the pump if
needed.
4. Remove the 4 bolts and washers from the bearing housing (item 12). Install two jackscrews (item 13) into two
jackscrew holes in top of bearing housing and screw them
in until the bolt heads bottom out. Grip the bearing housing firmly and pull straight out of the column assembly
(item 15). On extended length models, be sure to pull
straight up until the drive hub clears the mounting plate to
avoid damage to the lower bearing housing fingers.
5. Remove the bolts holding the mounting plate to the tank
and remove the pump from the tank. Gently place the pump
on the mounting plate (on a clean surface) with the pump
suction pointing straight up.
6. Remove the 6 housing bolts, loosen the discharge union ,
and remove the impeller housing . Remove the housing oring (item 18), and remove the impeller assembly (items
16 and 17).
INSPECTION
1. Check impeller drive bushing (item 16A) and impeller thrust
washer (item 17A). Replace if cracked, chipped, or scored.
If the minimum groove height in the slotted areas of the
drive bushing or the thrust washer is less than the minimum height recommended (.020), then replace them.
2. If the drive bushing’s inside diameter is more than .780,
then replace it. See figure 1.
.780 MAX.
Note: A pump running backwards will pump, but at a greatly
reduced flow and pressure.
OPERATION
1. Partially open the discharge valves.
2. Start the pump and verify liquid is flowing. If there is not
liquid flow, refer to the “Troubleshooting” section of these
instructions.
3. Adjust the flow rate and pressure by regulating the discharge valve.
MAINTENANCE
DISASSEMBLY
1. Disconnect the power and remove the electrical wiring.
2. Close the discharge valve and disconnect the piping.
3. Remove the 4 bolts and washers (items 7, 8 and 9), and
pull the motor and motor adapter flange (items 1 and 3)
from the pump. If the motor is to be replaced, remove the
4 bolts and washers (items 4, 5, and 6) from the motor
adapter flange (Item 3) and separate the flange from the
motor. Remove the motor adapter flange o-ring (item 2)
and the mounting plate o-ring (item 14).
.020 MIN.
Figure 1Figure 1
Figure 1
Figure 1Figure 1
3. Check for loose magnets on the drive hub.
4. Check for any signs of rubbing by the drive assembly inside the column assembly from the motor end, or signs of
rubbing inside the column assembly by the impeller assembly on the suction side. If there is any sign of rubbing,
contact the factory.
5. Check for bearing wear on the drive shaft (upper and lower
bearings on extended length models).
IMPELLER DISASSEMBLY
1. To separate the impeller drive (item 16) from the impeller
(item 17), support the impeller in an arbor press using two
5-inch minimum spacer blocks
2. Insert a 1-1/2” diameter plastic or wooden shaft into the
eye of the impeller and press the impeller drive out of the
impeller. See figure 2.
Support
5” MIN.
Figure 2Figure 2
Figure 2
Figure 2Figure 2
2
3. If an arbor press is not available, use two slotted screwdrivers to pry the impeller apart from the impeller drive.
There are two slots located 180° apart in the top of the
impeller drive. Insert the screwdriver tips into the slots
and pry them apart.
3
1
5
6
BUSHING AND THRUST RING REPLACEMENT
1. To remove the bushing (item 16A), place the impeller drive
in an arbor press with the slotted end of the bushing facing down. Insert a 1” diameter plastic or wooden shaft
through the impeller eye and press the bushing out. See
figure 3.
Figure 3Figure 3
Figure 3
Figure 3Figure 3
Note: The slotted end of the bushing is always located on
and installed from the “bottom” of the impeller drive. The
recessed, splined end that the impeller is inserted into is
the “top” of the impeller drive.
2. To replace the bushing, place the impeller drive with the
recessed splined end(the top) face down on a clean flat
surface. Match up the flat on the bushing side with the
flat in the eye of the impeller drive and insert the bushing,
slotted face up, into the impeller drive. Gently push until
the bushing bottoms out. The bushing should be flush
with the impeller eye on the “top” side.
3. If replacement is necessary, the impeller thrust ring (item
17A) on the open impeller can be removed by gently pulling the ring out of the impeller. The thrust ring on the
closed impeller must be removed by grasping the ring
with pliers and twisting the ring out.
4. To replace the thrust ring, match up the corresponding
flats on the thrust ring and the top of the impeller and
press into place.
Note: Protect the face of the thrust ring during installation with wood or plastic, and avoid tilting the ring.
REASSEMBLY
1. Align splines on the impeller into the impeller drive and
press together (protect the face of the thrust ring during
assembly).
2. With mounting plate down and the column section facing up, carefully install the impeller assembly onto the
barrier spindle (white ceramic post).
3. Install and lubricate the housing o-ring (item 18), and
place the impeller housing onto the pump. Align the discharge and start the discharge union (do not tighten yet).
Using the correct hardware, bolt the housing to the col-
4
Figure 4Figure 4
Figure 4
Figure 4Figure 4
2
umn section and tighten to 70 in-lbs. of torque using the pattern shown in figure 4. For pumps with PVDF hardware, a
®
Teflon
thread lubricant must be used on all plastic threads
before each use. Insert the 5/16-18 x 3-1/4 PVDF bolts through
the housing and barrier. Install PVDF nut. Tighten the nuts
onto the bolts using the pattern shown in figure 4.
CAUTION: Do not tighten more than maximum torque of 25
inch pounds on all PVDF hardware.
Next install the three 5/8-11 x 4-3/4 PVDF bolts using the
same maximum torque setting. Tighten the discharge pipe
union nut.
4. Clamp or somehow secure the mounting plate (item 21) to a
table with the pump end down. Making sure the jackscrews
(item 13) are threaded all the way into the bearing housing
(item 12), carefully set the drive hub into the column assembly
until the jackscrews touch. Extended length models require
lowering the drive hub and lower bearing mount straight down
into the column section until the jackscrews make contact. To
be centered correctly, the four fingers on the lower bearing
mount must seat inside locating bore in base of the column.
Avoid pinching your fingers by gripping the top flange of the
bearing housing and keeping fingers away from the jackscrews.
Use the jackscrews to slowly lower the bearing housing into
the column section and remove the jackscrews. Install and
tighten the four bolts and washers that secure the bearing
housing to the column assembly.
5. If the motor was replaced, install and lubricate the motor adapter
flange o-ring (item 2) and bolt the flange (item 3) onto the motor using the correct hardware (items 4, 5, & 6). Install the
coupling half onto the motor shaft (see instructions on page 1,
step 3, under “Pumps Without Motors”).
6. The customer can choose to either lay the pump end on its
side and then install the motor, or place the pump end into the
tank prior to the motor installation. An overhead hoist of some
sort may be needed to install the motor.
7. Install the plastic coupling insert (item 11) onto the motor
coupling half on the motor shaft. Install the mounting plate oring (item 14) into the o-ring groove on the mounting plate
and lubricate with a chemically compatible lubricant. Insert the
motor / motor adapter flange (items 1 & 3) into the top of the
pump. Note that the splines on the pump shaft coupling half
need to match up and seat into the coupling insert. Once the
coupling has seated, rotate the motor until it is orientated correctly (avoid locating electrical box by the discharge piping).
Insert and tighten the four bolts & washers (items 7, 8, and 9)
down through the motor adapter flange (item 3) into the mounting plate.
8. Refer to the “installation” section in this manual if needed.
3
Loading...