Finish Thompson KC11 Series Installation & Maintenance Instructions Manual
KC11 SERIES
Sealless Non-Metallic Centrifugal Pumps
Installation & Maintenance Instructions
1
ASSEMBLY
WARNING: Magnet 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 product powerful magnetic fields. Individuals with cardiac pacemakers, implanted
defibrillator, 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.
Unpack pump from carton and check for shipping damage.
6. Install the wet end assembly by grasping the discharge with your
right hand the “fins” (marked 3 and 5 in Figure 2) with your left
hand. Carefully align the wet end with the motor adapter and
allow the magnets to pull it into the place.
1
3
5
Figure 2
4
2
PUMPS WITH MOTORS
Remove shipping caps and inserts from suction and discharge, and
proceed to installation instructions.
PUMPS WITHOUT MOTORS - 145TC
1. Remove pump end assembly from box.
2. Remove two Phillips pan head screws (item 7) and hex nuts (item
9) from impeller housing. Then remove wet end assembly from
motor adapter.
3. Remove hardware package from box.
4. Install motor adapter (item 4) onto motor. Place 3/8” flat washers
(item 15) between the motor adapter and the motor face. Flat washers
must be aligned with motor adapter mounting holes. Align motor
adapter with motor rabbet and secure with socket head cap screws
(item 10).
5. Continue to step 5 of ASSEMBLY - PUMPS WITHOUT MOTORS ALL OTHER MOTORS.
ALL OTHER MOTORS
1. Remove pump end assembly from box.
CAUTION: Strong magnets present. Keep metal objects and metallic
chips/particles away from pump components.
2. Remove two Phillips pan head screws (item 7) and hex nuts (item
9) from impeller housing, and remove wet end assembly from motor
adapter.
3. Remove hardware package from box.
4. Install motor adapter (item 4) onto motor and secure with socket
head cap screws (item 10) and lock washers (item 11). Refer to
Figure 6.
5. Coat the motor shaft with anti-seize compound. Slide drive magnet
assembly (item 5) onto motor shaft keeping shaft key in place.
Installation dimension from front of drive magnet assembly to
face of motor adatper is .180 ± .010 inches (4.57 mm ± .25 mm).
Tighten 2 set screws (item 5A) with a 3/16” “T” handle Allen
wrench to 228 in-lbs (25.8 N-m). A spacing tool is available for
setting proper dimension (p/n A103188). See Figure 1.
IMPORTANT: Verify the tightness of the set screws in the drive
magnet assembly prior to operation.
.180 ± .010
(4.57 mm ± .25 mm)
Motor Adapter
Figure 1
(Item 5)
Drive Magnet Assembly
(Item 4)
2
WARNING: Components can slam together from strong magnets.
Do not allow fingers to get between the wet end and the motor
adapter.
Align mounting holes and install Phillips pan head screws (item
7) and hex nuts (item 9). Hand tighten screws to 30 in-lbs (3.34
N-m) of torque using the pattern shown in Figure 2.
Note: Plastic pumps will expand and contract with temperature
so periodically check and hand tighten the Phillips head pan
screws.
7. Remove the two piece shipping plug and insert from the suction
of the housing after the pump has been placed into the system
and just before you attach the piping. Keep the shipping plug for
use when disassembling the pump. Always use the shipping
plug when assembling or disassembling the wet end to protect
the internal parts.
8. Install pump into system according to installation instructions
below.
INSTALLATION
MOUNTING
Motor or base plate should be securely fastened.
PIPING
1. Support piping near pump to eliminate any strain on pump
casings.
2. To minimize head loss from friction:
a. Increase pipe size by 1 diameter.
b. Use minimal number of pipe bends.
3. Keep bends a minimum of 10 pipe diameters from suction an
discharge.
4. Position pump as close to liquid source as possible.
5. Maintain a flooded suction.
6. Ensure that piping does not leak.
7. Install valves on suction and discharge lines (a minimum of 10
pipe diameters from pump).
8. For units in a suction lift system, install appropriate piping in the
discharge to allow priming of pump.
9. The suction valve should be fully open to avoid restricting suction flow.
IMPORTANT: To protect the pump if prime is lost, use one of
the following: (1) pressure switch on the discharge; (2) vacuum
switch on the suction; (3) a motor minder to monitor motor current.
10. When pumping liquids which may solidify or crystallize, a flush
system should be added to the piping. See Figure 3. Install
water inlet and outlet valves as shown.
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