Finish Thompson MSVKC User Manual
MSVKC SERIES
Sealless Non-Metallic Vertical 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. No assembly required. Simply unpack the pump and motor and examine
for any signs of shipping damage. If damage is detected, save the
packaging and notify the carrier immediately.
2. Ensure that lock rings are securely snapped in place and did not loosen
during shipment.
3. To install the pump into the system, follow the installation instructions
provided.
PUMPS WITHOUT MOTORS
Note: Finish Thompson has added extra weight (Flywheel item 35 in Figure
5) to several of our MSVKC Series Pumps to slow down motor start
up & prevent possible magnet decoupling. It is necessary to know
whether your pump was supplied with the flywheel. Flywheels are
supplied with all 56C NEMA & 80 Metric frame motor adapters. If you
are unsure whether your pump was supplied with a flywheel, please
contact FTI’s Tech Service Department at PH: 800-888-3743 or email
techservice@finishthompson.com.
Note: Motor assembly videos are available online at www.finishthompson.com/downloads/maintenance videos.
CAUTION: Pump assembly may be top heavy.
6. Rotate the pump and the mounting plate if ordered to the desired orientation. Align the holes in the mounting plate and the motor adapter
with the holes in the motor face. Secure the mounting plate and motor
adapter to the motor using the correct bolts and washers (items 6,7,
and 8) from the hardware package.
7. Check and verify the locking rings are securely snapped in place and
did not loosen during shipping. Rotate the motor fan to check for binding
or rubbing inside the pump.
8. Install the pump into the system according to the installation instructions provided.
FOR 63, 71 METRIC FRAME ADAPTERS WITHOUT FLYWHEEL (USE
FIGURE 6):
1. Unpack the pump and any supplied accessories and examine for
damage. If any damage is detected, save the packaging and notify
the carrier immediately.
2. Prepare to assemble the pump onto the motor by placing the motor
on the fan cover on a suitable clean, level work surface.
3. Install the keyway into the motor shaft key slot. Align the keyway slot
in the coupling half (item 29, figure 6), and slide the coupling half onto
the motor shaft with the splined side facing the pump. Set the coupling
half with the motor shaft recessed 11.1 mm. Tighten both setscrews
with a 1/8” Allen wrench to 7.9 N-m.
4. Install the metric motor adapter (item 2 in figure 6) onto the motor. To
aid in correct installation, the letters “A” & “B” are molded onto the
opposite sides of the motor adapter. For 71 frame motors, using the
correct hardware (items 3,4 and 5 in figure 6) mount the adapter with
side “B” facing up. For 63 frame motors, using the correct hardware
(items 3,4 and 5 in figure 6) mount the adapter with side “A” facing
up. See figures A & B.
FOR 56C FRAME ADAPTERS WITH FLYWHEEL (ITEM 35 IN FIGURE 5):
1. Unpack the pump and any supplied accessories. Examine for shipping
damage. If damage is detected, save the packaging and notify the
carrier immediately.
2. Prepare to assemble the pump onto the motor by placing the motor
on the fan cover on a suitable clean, level work surface.
3. Install motor key into motor shaft key slot. Align the keyway slot on
the flywheel (item 35 in figure 5) and slide the flywheel onto the motor shaft with the protruding boss towards the motor face. Align the
keyway slot in the top coupling half (item 29 in figure 5) and slide the
coupling half on. Set coupling half with the motor shaft recessed 7/32”
and tighten both setscrews with a 1/8” Allen wrench to 70 in-lbs.
4. Slide the flywheel forward so that it rests against the backside of the
coupling half. Tighten both setscrews.
5. Install the coupling insert (yellow internally splined plastic ring) onto
the coupling half on the motor shaft. Place coupling support (item
38A in figure 5) into center of coupling half with the short side facing
the motor. Carefully slide the motor adapter end (item 9 in figure 5)
of the pump assembly over the motor shaft until both coupling halves
are completely seated in the coupling insert. Make sure rabbet on the
motor is firmly seated into the motor adapter.
5. Install the coupling insert (yellow internally splined plastic sleeve) onto
the coupling half on the motor shaft. Carefully slide the motor adapter
(item 9 in figure 6) onto the motor making sure the pump shaft coupling
matches up with the plastic insert and seats properly. Make sure rabbet
on the motor is firmly seated into the motor adapter.
CAUTION: Improper positioning of the metric motor adapter can
cause premature coupling failure or cause the pump shaft to bottom
out before the pump is properly installed onto the motor adapter.
6. Rotate the pump discharge and the mounting plate if ordered to the
desired orientation. Align the bolt holes on the mounting plate with
the motor adapter (item 9 in figure 6) and the metric motor adapter
flange (item 2 in figure 6). Secure with the hardware provided.
CAUTION: Pump assembly may be top heavy.
7. Check and verify the locking rings are securely snapped into place and
did not loosen during the assembly process. Rotate the motor fan to
check for binding or rubbing inside the pump.
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Figure A Figure B
8. Install the pump into the system according to the installation instructions provided.
FOR 80 FRAME METRIC MOTOR ADAPTER WITH FLYWHEEL (ITEM 35
IN FIGURE 5):
1. Unpack the pump parts and any supplied accessories and examine
for damage. If damage is detected, save the packaging and notify
the carrier immediately.
2. Prepare to assemble the pump onto the motor by placing the motor
on the fan cover on a suitable clean, level work surface.
3. Install the keyway into motor shaft key slot. Align the keyway slot in
flywheel adapter / coupling half combination (item 34 and metal half
of item 29 in figure 5) and install on motor shaft with splined side
facing the pump. Note: these items are pre-assembled at the factory.
Set coupling half flush with the end of the motor shaft and secure with
coupling support washer, lock washer and bolt (items 38B, 39 & 40
in figure 5). Tighten both setscrews in coupling half with 1/8” Allen
wrench to 7.9 N-m.
4. Install the metric motor adapter (item 2 in figure 5) onto the motor. To
aid in correct installation, the letters “A” and “B” are molded on the
opposite sides of the metric motor adapter. For 80 frame motors using
the correct hardware (items 3,4 and 5 in figure 5) mount the adapter
with side “A” facing up. The metric motor adapter must be positioned
so that the adapter seats onto the motor rabbet. See figures A & B
above.
CAUTION: Improper positioning of the metric motor adapter can
cause premature coupling failure or cause the pump shaft to bottom
out before the pump is properly installed onto the motor adapter.
5. Install the flywheel (item 35 in figure 5) onto the flywheel adapter and
attach using four screws with lock washers (items 36 and 37 in figure
5). Tighten securely.
6. Insert the coupling insert (yellow internally splined plastic sleeve) into
the coupling half on the motor. Carefully slide the motor adapter end
(item 9 in figure 5) of the pump assembly over the motor shaft until
both coupling halves are completely seated in the coupling insert.
Make sure rabbet on the motor is firmly seated into the motor adapter.
7. Rotate the pump discharge and mounting plate if ordered to the desired
orientation. Align the bolt holes on the mounting plate with the motor
adapter (item 9) and the metric motor adapter flange (item 2). Secure
with the hardware provided.
8. Make sure that the locking rings are securely snapped in place and
did not loosen during shipping or the assembly process.
CAUTION: Pump assembly may be top heavy.
Install the pump into the system according to the installation instructions
provided.
INSTALLATION
The VKC Series is a versatile pump designed to be operated in a variety
of mounting configurations. The pump can be mounted either inside or
outside of a tank or sump. See Figure 1.
Note: Drawings for illustration only. Pumps need to be properly supported when installed.
drawings 3 and 4 in Figure 1.
Figure 1
Drawing 1 shows drawing of pump mounted inside a tank with suction off the bottom of the tank
and level fluctuating from near top of pump column to close to the bottom of the pump.
Drawing 2 shows drawing of pump suction near tank bottom and level fluctuating between the
top and bottom of the tank.
Drawing 3 shows drawing of pump with suction extension and the level fluctuating between
startup level and low level.
Drawing 4 shows drawing of pump mounted outside the tank.
Drawing 5 shows drawing of pump mounted outside the tank with the motor below the liquid level.
MOUNTING
A mounting plate is recommended for in-tank installations. Use a hole
saw to cut holes in desired location for piping if required.
Support and securely fasten the mounting plate on all four sides if
possible or on two sides if mounted in a corner. Drill holes in the
mounting plate at the desired location for bolting to the tank.
A drip cover may be installed on top of the motor if desired.
Mount pump in desired configuration. Securely fasten mounting
plate if used. Motor feet may also be used for mounting.
PIPING
1. Support piping near the pump to eliminate any strain on the pump
casings. Do not use suction or discharge piping to support the pump.
2. Do not overtighten the piping on the discharge on initial installation
(i.e., down to the O-ring). Damage to the discharge can occur. The
O-ring is used only when there is wear and the plastic threads are
loose.
3. Do not place the pump suction directly on the bottom of the tank. Keep
the pump suction at least one pipe diameter off the bottom.
4. A suction extension tube of up to nine feet in length can be added.
5. To minimize head loss from friction:
a. Increase pipe size by 1 diameter.
b. Use minimal number of pipe bends.
6. If a check valve is installed in the discharge piping, an air bleed must
be installed in the discharge line to prevent air lock. This allows air
trapped in the pump internals to be removed on initial startup. See
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7. Maintain a flooded suction. Use a foot valve if necessary.
8. Ensure that the piping does not leak and suction is not prone to clogging. Use a strainer if necessary on the suction.
9. If flexible hose is preferred, use reinforced hose rated for the proper
temperature and pressure. This helps avoid collapse or kinks.
10. Install valves a minimum of 10 pipe diameters from the pump.
CAUTION: To stop the pump if prime is lost, use one of the following:
(1) pressure switch on the discharge or (2) motor minder to monitor motor
current.
ELECTRICAL
Install motor according to NEC requirements and local electrical codes.
Motor should have an overload protection circuit.
Important. To verify the correct motor rotation:
1. Install the pump into the system.
2. Fully open suction and discharge valves.
3. Allow fluid to flow into the pump. Do not allow the pump to run dry
(PTFE & ceramic bushings can not be allowed to run dry
without damage to pump components).
4. Jog the motor (allow it to run for one to two seconds) and observe
rotation of the motor fan. Refer to directional arrow on the pump.
Note: A pump running backwards will pump but at a greatly
reduced flow and pressure.
OPERATION
1. Completely open the discharge valve. On pumps equipped with a
discharge check valve, open air bleed valve on initial startup.
2. Start the pump and check liquid flow. If there is no flow, see the
Troubleshooting section.
3. Adjust the flow rate and pressure by regulating the discharge valve.
MAINTENANCE
DISASSEMBLY
1. Disconnect the power and remove the wiring.
2. Close the discharge valve and disconnect the piping.
3. Remove the mounting bolts and pull the pump from the tank. Securely
anchor or clamp the motor to a workbench in a horizontal position.
4. Gently tap the locking ring (item 11 closest to pump end) toward the
motor until it is loose. Mark a matching line on the barrier/column
housing adapter (item 16) and the 2nd stage impeller housing (item
20) as a discharge orientation reference during re-assembly. Using a
strap wrench on the barrier/column housing adapter (item 16), turn
it counterclockwise and remove it from the pump column. When it is
unthreaded, pull it straight off to expose the drive magnet assembly
(item 14).
5. Place the pump end / barrier column housing adapter on a clean work
surface with the suction pointing straight up. Remove the six screws
and washers (items 25A,B, & C) from the impeller housing.
6. Using a thin bladed screwdriver, gently separate the 1st stage housing
(item 24) from the diffuser (item 22). Remove the 1st stage impeller
housing (item 24) being careful to pull straight off so as not to damage
the ceramic front spindle support. Remove the housing O-ring (item
17). Holding down on the outside of the diffuser assembly (item 22)
with one hand, gently pull the 1st stage impeller/impeller drive shaft
assembly (items 19 & 23) from the pump.
7. Remove the diffuser assembly (item 22) and the diffuser O-ring (item
21) from the top of the 2nd stage impeller housing (item 20). Remove
the 2nd stage impeller housing (item 20), the housing O-ring (item 17),
and the 2nd stage impeller assembly (items 18 & 19) from the barrier/
column-housing adapter (item 16).
8. If further disassembly is required, place a 9/16-inch wrench on the flat
area of the pump shaft (item 13) on the motor side of the drive magnet
assembly (item 14).
Holding the pump shaft with the wrench, remove the locking nut (item
15) by turning it clockwise (left hand thread). After the nut is removed,
unthread the drive magnet assembly (item 14).
9. If the pump is longer than 12 inches, you remove each of the column
extensions (item 30) by doing the following. Loosen the two set screws
on the shaft bearing (item 31), gently tap the locking ring (item 11)
toward the motor, and use the strap wrench to unthread the section.
10. When you are down to the motor adapter (item 9), mark a matching
line on the adapter flange, mounting plate (item 10), and the motor to
be referenced during reassembly. Loosen the setscrews on the shaft
bearing (item 31). Remove the 4 motor adapter bolts and washers (items
6, 7, & 8), the mounting plate (item 10), the motor adapter (item 9), and
the metric motor adapter (item 2) if required. If motor is to be replaced,
remove the coupling insert and coupling half (part of item 29).
CAUTION: Keep the drive magnet assembly and the impeller drives
away from metal chips or particles
EXAMINATION/REPLACEMENT OF PARTS
1. Inspect the bushings (items 18A) in both the impeller drive (item 18) and
the impeller drive shaft (item 23). See figure 2. If bushing in impeller
drive (item 18) requires replacement, grip the impeller assembly (items
18 & 19) with the bushing side up, and gently tap the impeller (item
19) off the impeller drive (item 18). Insert a 1/16-inch punch into the
balance hole (inner circle of four holes) on top of the impeller drive (item
18) and gently tap out the bushing. The punch may need to be moved
to a second hole to complete the removal. Install the new bushing by
gently pressing it in until it bottoms out (use a block of wood and a
mallet if necessary). If the bushing in the impeller drive shaft is worn
or cracked, the complete impeller drive shaft with bushing (item 23)
needs to be replaced.
2. Inspect both thrust rings (item 19A) for wear. See figure 2. If replacement is necessary pull the old ring out, align the flat on the new ring
and the seating area and press into place.
Figure 2
3. Inspect both ceramic housing thrust rings and both the barrier ceramic
post and the 1st stage impeller housing ceramic support post for cracks,
chips, scoring, or excessive wear. Replace as required.
4. Check for loose magnets on the drive hub (item 14) or rubbed areas on
the barrier/column housing adapter (item 16) or impeller assemblies.
Contact your distributor or FTI Technical Service if a problem is found.
5. Inspect the bearing(s) for damage and replace if necessary. To remove
the bearing, unscrew the four retaining screws (item 32) and press
the bearing out (note: the top of the bearing where the set screws are
faces away from the motor). Installation of the new bearing requires
pressing it into the section with the set screws/collar facing away from
the motor, and replacing the retaining screws.
6. Examine all the plastic parts for damage or wear. Replace as needed.
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