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Figure 3
Suction
Valve
Water Outlet
Valve
MOTOR/ELECTRICAL
Only qualified personnel trained in the safe installation and operation of
this equipment should install the motor. Install the motor according to
National Electric Code, NEMA MG-2, IEC standards requirements and/or
applicable local electrical codes. The voltage and frequency variations of
the power supply should never exceed the limits established in the ap-
plicable standard. Prior to connecting to the power line, check nameplate
voltage, rotation connection and ensure proper grounding. Sufficient ven-
tilation area should be provided to insure proper operation and cooling of
the motor. The motor must be installed with a suitable overload protec-
tion circuit. For three phase motors it is recommended to install a phase
failure protection device. Download the motor manual from the specific
motor manufacturers' website for additional information concerning mo-
tor installation, safety and maintenance instructions.
Wire the motor for clockwise rotation when facing the fan end of the
motor.
CAUTION: Do not operate the pump to check rotation until
the pump is full of liquid or damage may occur even if the motor is
"bumped" to check motor rotation direction.
Check all electrical connections with the wiring diagram on the motor.
Make sure the voltage, frequency, phase and amp draw comply with the
supply circuit.
If utilized, verify that power monitors or variable frequency drives have been
properly installed according to the manufacturer's instructions.
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
FLOODED SUCTION SYSTEM
1. Fully open suction and discharge valves.
2. Start the pump and check liquid flow. If no flow, see trouble-
shooting section.
3. Adjust flow rate and pressure by regulating discharge valve. Do
not attempt to adjust flow with the suction valve.
SUCTION LIFT SYSTEM
1. Fully open suction and discharge valves.
2. Prime system by filling priming chamber and suction line with
liquid to be pumped. Allow time for trapped air to work its way
out.
3. Start the pump and check liquid flow. If no flow, see trouble-
shooting section.
4. Adjust flow rate and pressure by regulating discharge valve. Do
not attempt to adjust flow with the suction valve.
FLUSH SYSTEMS
1. Fully close suction and discharge valves.
Discharge Valve
2. Connect water supply to water inlet valve.
3. Connect drain hose to water outlet valve.
Water Inlet 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. Install the two-piece shipping plug into the suction of the housing.
Remove the 5 Phillips pan head screws and hex nuts (items 7 and
9).
4. Securely clamp or hold motor in place. Remove wet end by grip-
ping the discharge with your right hand while gripping the two
fins marked 3 and 5 in figure 2. With a tight grip, pull the wet end
straight out of the motor adapter using one quick motion.
WARNING: Components can slam together from strong mag-
nets. Keep fingers away from area between housing and motor
adapter.
5. To disassemble wet end, remove the 4 Phillips head screws (item
13).
6. Remove impeller housing (item 1) from barrier (item 3), and pull
out the impeller assembly (item 2). Remove o-ring (item 6).
To remove drive magnet assembly (item 5), insert a 3/16" hex
wrench in the access hole on motor adapter top and loosen the 2
set screws (item 5A). Remove the drive assembly from the mo-
tor shaft.
To remove the drive magnet assembly, use a hook-type puller
through the 1/2" hole or a yoke-type puller through the 3/8"
threaded holes. Pull the drive by pushing off of the end of the
.
motor's shaft. Always coat the motor shaft with an anti-seize
compound prior to reinstalling.
CAUTION: Strong magnets present. Keep metal objects and
metallic chips/particles away from pump components.
EXAMINATION
1. Check impeller drive bushing (item 2A), thrust ring (item 2B), ce-
ramic thrust rings and shaft for cracks, chips, scoring or excess
wear (See Figure 4). Replace as required.
Teflon Thrust Ring
.020 MIN. Groove Height
2. Check for loose magnets on drive assembly or rubbed areas on
impeller or barrier assemblies. Contact your distributor or FTI
Technical Service if a problem is found.
BUSHING AND THRUST RING REPLACEMENT
1. To remove the bushing, place the impeller assembly (item 2) in an
arbor press. Insert a 3/4" diameter plastic or wood shaft through
the eye of the impeller and press bushing out. Refer to Figure 5.
3
Figure 4
Bushing
(Item 2B)
.515" Max. Dia.
(Item 2A)
Carbon
.020 MIN.
Groove Height
Front Face
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