Finish Thompson KC22, KC32 User Manual

KC22/32 SERIES Sealless

Non-Metallic Centrifugal Pumps

Installation and

Maintenance Instructions

ASSEMBLY

Unpack pump from carton and check for shipping damage.

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 device 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.

ATEX COMPLIANT PUMPS

All assembly, installation, and maintenance instructions are the same as standard pumps with the exceptions noted on page 3 under "Safety Precautions for ATEX pumps."

PUMPS WITH MOTORS

Remove shipping plugs and insert from suction and discharge and proceed to installation instructions.

PUMPS WITHOUT MOTORS

1. Remove wet end assembly from box. CAUTION: Strong magnets present. Keep metal objects and

metallic chips/particles away from pump components.

2. Remove hardware package from box.

3. Install motor adapter (item 6) onto motor with labels at top using items 10 and 11.

4. Remove drive mag assembly (item 5) from box and slide

assembly onto motor shaft making sure shaft key (item 12)

is in place. Installation dimension is .060 +/‑.010 inches as shown in Figure 1. Tighten 2 set screws (item 5A) to 228 in‑lbs. (25.8 N‑m).

Item 5 Drive Magnet Assembly

Item 6 Motor Adapter

.060 +/‑ .010

Figure 1

IMPORTANT: Verify the tightness of the set screws in the

drive magnet assembly prior to operation.

WARNING: Components can slam together from strong

magnets. Keep ﬁngers away from area between housing and motor adapter.

5. Gripping the discharge and the side of the impeller hous‑ ing (note above warning), carefully install the wet end into the motor adapter. Note that the two housing studs (item

15) should be located at 3 and 9 o'clock (for 12 o'clock discharge location) and will go through the motor adapter.

6. Install the 5/16 x 3/4 SS hex bolts (item 7), the 5/16 ﬂat washers (item 9), and the 5/16 hex nuts (item 8) and tighten to 70 in‑lbs. of torque using the pattern shown in ﬁgure 2.

7. Remove the two‑piece shipping plug from the suction.

8. Reach into the suction and spin the impeller to check if it spins freely. If it does not, disassemble and recheck the drive hub installation instructions in step 4.

9. Install pump into the system according to the following installation instructions.

Figure 2

INSTALLATION

MOUNTING

Motor or base plate should be securely fastened.

PIPlNG

1. Support piping near the pump to minimize strain on pump casing.

2. To minimize head loss due to friction:

a. Increase pipe size 1 diameter b. Use minimal number of bends

3. Keep pipe bends a minimum of 10 pipe diameters from suction and discharge. For example, if using 2" pipe, ﬁrst bend should be at least 20" from suction discharge.

4. Position pump as close to liquid source as possible.

5. Maintain a ﬂooded suction.

6. Ensure that piping is leak proof.

7. Install valves on suction and discharge lines (minimum of 10 pipe diameters from pump).

8. For units in suction lift system, install appropriate piping in 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 power monitor 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.

Discharge Valve

Suction Valve

Water Outlet Valve

Figure 3

Water Inlet Valve

ELECTRICAL

Install motor according to NEC requirements and local electrical codes.

IMPORTANT: To verify correct motor rotation: (1) Install pump into system. (2) Fully open suction and discharge valves. (3) Allow fluid to flow into the pump. Do not allow pump to run dry (PTFE and ceramic bushings cannot be run dry without damage to pump components). (4) Jog motor (allow it to run for one or two seconds) and observe rotation of motor fan. Correct rotation is clockwise as viewed from motor fan. Refer to directional arrow on pump.

OPERATION

START UP

1. This pump must be ﬁlled from a ﬂooded suction tank (gravity) or primed with liquid from an outside source. The KC22/32 are not self‑priming.

2. Open the inlet (suction) and discharge valves completely and allow the pump to ﬁll with liquid.

3. Close the discharge valve.

4. Turn the pump on. Slowly open the discharge valve. Adjust the ﬂow rate and pressure by regulating the discharge valve. Do not attempt to adjust the ﬂow with the suction valve.

5. Use of a power monitor is strongly recommended for pumps with ceramic, PTFE or silicon carbide bushings. The power monitor will stop the pump and help prevent damage should the pump run dry. ATEX certiﬁed pumps MUST use a power monitor.

SHUT DOWN

Use the following procedure to shutdown the pump.

1. Slowly close the discharge valve.

2. Turn off the motor.

3. Close the suction valve.

3. Connect drain hose to water outlet valve.

4. Open inlet and outlet valves, and ﬂush system until pump is clean (approximately 5 minutes).

MAINTENANCE

DISASSEMBLY

1. Disconnect power. Remove electrical wiring and mounting bolts to ﬂoor or base plate.

2. Close suction and discharge valves, and disconnect piping.

3. Remove bolts, nuts and washers (items 7, 8 and 9). Leave the 2 housing studs (item 15) in place until the wet end is removed.

4. Securely clamp or hold motor in place. Remove wet end assembly by inserting both thumbs into pump suction and pulling assembly straight out with a quick motion.

WARNING: Components can slam together from strong

magnets. Keep ﬁngers away from area between housing and motor adapter.

5. Disassemble wet end by removing 2 housing studs and nuts (items 16) which attach barrier (item 4) to impeller housing (item 1). Remove and discard o‑ring (item 13).

6. Remove drive magnet assembly by inserting a 3/16" hex wrench into access hole in side of motor adapter and loosening 2 set screws (item 5A). Grasp inside of magnet assembly and pull off of motor shaft.

CAUTION: Strong magnets present. Keep metal objects and

metallic chips/particles away from pump components.

EXAMINATION

1. Check impeller drive bushing (item 3A) and impeller thrust washer (item 2A). If cracked, chipped or scored, then replace. Replace if minimum groove height is less than the minimum height recommended. See Figure 4.

2. Check for loose magnets.

.780 MAX.

.020 MIN. Groove Height

IMPELLER DISASSEMBLY

1. To separate impeller body (item 2) from the impeller drive (item 3), support the body in an arbor press using two 5" minimum spacer blocks.

2. Insert a 1‑1/2" diameter plastic or wooden shaft into the impeller eye, and push the drive out of the body. See Figure 5.

5” MIN.

Diameter

Figure 4

FLUSH SYSTEM

1. Fully close suction and discharge valves.

2. Connect water supply to water inlet valve.

Support

Figure 5

+ 4 hidden pages