GP11 SERIES Sealed
Non-Metallic Centrifugal Pumps
Installation and
Maintenance Instructions
ASSEMBLY
Unpack pump from carton and check for shipping damage.
PUMPS WITH MOTOR
No assembly required. Simply unpack the pump and motor and
examine for any shipping damage. If damage is detected, save
the packaging and notify the carrier immediately.
Remove the shipping plugs from the suction and discharge of
the pump and proceed to the “Installation Requirements” section of these instructions.
PUMPS WITHOUT MOTORS
1. Unpack the pump and examine for any shipping damage.
If damage is detected, save the packaging and notify the
carrier immediately. Use the “Supplied and Optional Parts”
section of these instructions to verify that all items have
been received.
2. Prepare to install the pump onto the motor.
a. Remove the protective shroud (Item 22) from the motor
adapter (item 6).
b. Ensure that the set screws in shaft adapter (Item 20)
are loosened to avoid interference when installing.
c. Coat the motor shaft with an anti-seize compound prior
to installation.
3. Properly adjust the spacing between the impeller (item 3)
and the housing cover (item 2).
NOTE: Proper spacing of the Impeller to the housing cover
is critical for performance and to avoid damage to pump
components. A .050” gap is required.
a. Slide the shaft adapter onto the motor shaft until the
impeller is tight against the inside of the housing
cover (look through the pump’s discharge to verify).
Make sure that the shaft adapter’s set screws do not
line up into the motor shaft’s key way.
b. Temporarily bolt the motor adapter to the motor, placing
shims (flat washer - item 10) between the motor
adapter and the motor using two hex-head cap screws
(Item #11) 180° apart (see Figure 1).
c. Tighten the four set screws from the shaft adapter onto
the motor shaft.
d. Remove the two temporary hex-head cap screws and
shim washers.
4. Pull the motor adapter flush against the motor face. Install
Figure 1
four hex-head cap screws and flat washers through the
motor adapter and into the motor and tighten.
5. Verify there is a .050” gap between the impeller and housing cover by looking into the discharge of the pump.
6. Reinstall the protective shroud.
7. Install the pump into your system according to the “Installation Requirements” section of these instructions.
INSTALLATION
MOUNTING
Motor or base plate must be securely fastened.
PIPING
• Always support the piping near the pump to minimize
stress and strain on the pump’s casing.
• Minimize frictional losses by increasing the piping size by
one diameter.
• Use a minimal number of bends, keeping any bends at
least a distance of ten pipe diameters away from the pump.
• Install valves on the suction and discharge lines. Place the
valves within a distance of ten pipe diameters away from
the pump.
• Ensure that the piping is leak free.
• Position the pump as close to the liquid source as possible.
• Maintain a flooded suction at all times.
PUMPS WITH COOLING (PRESSURE) COLLARS
A cooling collar provides a water flush to the pump’s seal. This
is necessary when pumping hot liquids or liquids that tend to
build up or crystallize around the seal faces. If your pump is
supplied with a cooling collar, proper water flow and pressure
are critical to the operation of the pump.
1. Plumb a water supply to the cooling collar. Use 1/8” NPT
threaded holes for the water inlet and drain lines. Either
hard pipe or flexible tubing is suitable.
2. Adjust the water flow and pressure of the flush/cooling
water BEFORE starting the pump.
1
• For pumps with bellows or multi-spring seals, supply
one to two gallons water flow per hour at 1 - 2 psi.
• For pumps with a double seal, supply one to two
gallons per hour water flow at 5 - 10 psi ABOVE the
discharge pressure of the pump.
1. Never run a pump equipped with a cooling collar
2. Do not over-pressurize the cooling collar’s water
CAUTIONS:
without a proper water supply. Doing so will result in
damage to the pump. Use of a flow switch is
recommended.
supply. Doing so can result in damage to pump
components.
OpErATION
FLOODED SUCTION SYSTEMS
1. Fully open the suction and discharge valves.
2. If a cooling collar is used, turn on the cooling water.
3. Start the pump and verify liquid is flowing. If there is no
liquid flow, refer to the “Troubleshooting” section of these
instructions.
4. Adjust the flow rate and pressure by regulating the discharge valve.
CAUTION: Never attempt to adjust the liquid flow with
the suction valve. Limiting the suction will result in damage to pump components.
SpEcIAL pIpINg SITuATIONS
SUCTION LIFT
1. Install a priming chamber on the feed side of the pump or
appropriate piping on the discharge for priming the pump.
2. Install a foot valve on the bottom of the suction piping to
maintain a prime to the pump.
CAUTION: Suction prime must be maintained at all
times. Running the pump dry will cause damage to pump
components. To protect the pump if prime is lost, use a
pressure switch on the discharge, a vacuum switch on the
suction, or a motor minder to monitor motor current draw.
PUMPING LIQUIDS WHICH MAY SOLIDIFY OR
CRYSTALLIZE
Add a flush system to the pump’s piping to prevent accumulation of material inside the pump. Install water inlet and outlet
valves as shown in Figure 2. Refer to the “Operation” section of
these instructions for the flush procedure.
Figure 2
ELEcTrIcAL cONNEcTIONS
1. Perform the motor wiring according to NEC requirements
and local electrical codes.
2. Wire the motor for counter clockwise rotation when facing
the face of the motor .
CAUTION: Before starting the pump, momentarily
“jog” the motor while looking through the suction of the
pump to determine if the motor is wired for the correct rotation. Refer to the directional arrow on the pump.
SUCTION LIFT SYSTEMS
1. Fully open suction and discharge valves.
2. If a cooling collar is used, turn on the cooling water.
3. Prime the pump by filling the priming chamber. Allow time
for any trapped air in the suction piping to escape.
4. Start the pump. Adjust the flow rate and pressure by
reguating the discharge valve.
CAUTION: Never attempt to adjust the liquid flow with
the suction valve. Limiting the suction will result in damage to pump components.
FLUSH SYSTEMS
1. Fully close the suction and discharge valves.
2. Connect the water supply to the water inlet valve and connect a drain hose to water outlet valve.
3. Turn on the water supply and open the inlet and outlet
valves. Flush the system until the pump has been cleared
of any material buildup (approximately 5 minutes).
4. Close the inlet and outlet valves and turn off water supply.
SEALS
SEAL REMOVAL AND INSPECTION
1. Disconnect the piping and electrical power from the pump.
2. Disassemble the pump from the motor adapter.
a. Remove the six hex-head cap screws from the
impeller housing. The impeller housing will loosen if
gently tapped at the discharge outlet.
b. Remove the protective shroud from the motor adapter.
c. While preventing the motor shaft from moving (insert
a screwdriver into the motor’s fan), unscrew the
impeller from the motor shaft. Remove the impeller,
seal, cooling collar (if applicable) and housing cover
as one assembly from the motor shaft.
NOTE: For pumps using a 56C/145TC or motor adapter,
leave the shaft adapter secured to the motor shaft.
2
3. Remove the seal for inspection.
a. Lubricate impeller’s shaft with rubber lubricant
emulsion or soapy water to allow the seal to slide
easier.
NOTE: Never use a petroleum product for lubrication.
Doing so will effect the seal elastomer’s performance
after reassembly.
b. If no cooling collar is present, carefully remove the
retaining ring that holds the rear of the seal. If
equipped with a cooling collar, carefully slide the
cooling collar off of the Impeller’s shaft.
• With single bellows or multi-spring seals, a
retaining ring holds the seal in place. Carefully
remove the retaining ring.
• With double seals, the cooling collar holds the seal
in place.
c. Remove the seal’s spring. Grasp the rotating head of
d. Remove the housing cover from the impeller.
e. Press the ceramic stationary seat portion of the seal
4. Visually inspect all parts for damage. Replace any parts
• Look for scoring of the seal’s ceramic face.
• Inspect the rotating seal face for wear.
• Check for degradation or chemical attack of any
• Look for signs of heat damage (melted plastic) to the
CAUTION: The seal’s spring is compressed and under
pressure. Use care when removing.
the seal by hand and twist to remove from the
impeller’s shaft.
out of the housing cover.
that appear worn or damaged.
elastomers and other seal components.
Housing Cover and Impeller’s shaft.
SEAL INSTALLATION & PUMP REASSEMBLY
Single Bellows Seal
1. Install the stationary seal face.
a. Lubricate the stationary face’s o-ring with a rubber
lubricant emulsion or soapy water. Keep the polished
surfaces of the seal face clean.
NOTE: Never use a petroleum product for lubrication.
Doing so will effect the seal elastomer’s performance
after reassembly.
b. Carefully press the stationary face into the housing
cover (use a piece of cardboard to protect the seal while
pressing against the stationary face). The smoothest
side of the stationary face should be facing outward.
2. Install the rotating face.
a. Lubricate the impeller’s shaft with a rubber lubricant
emulsion or soapy water.
b. Carefully slide the housing cover over the Impeller’s
shaft. The side of the housing cover with the pressed-
in seal face should be away from the impeller.
c. Separate the rotating head of the seal from the large
spring. Relubricate the impeller’s shaft, then carefully
slide the rotating head of the seal over the Impeller’s
shaft using a twisting motion. The carbon side of the
rotating face should be toward and pressed against the
stationary head of the housing cover.
3. Install the seal’s spring and spring retainer. Compress the
4. Install the assembled seal, impeller and housing cover onto
a. If a cooling collar is being used, slide it onto the
b. Screw the impeller onto the motor shaft or shaft
c. Make certain that the housing cover’s o-ring is in place.
d. Place the impeller housing into position and install the
CAUTION: The carbon portion of the seal is easily
damaged. Take care not to apply uneven force or crack
the carbon while installing.
spring and snap the retaining ring (item #8) into the groove
on the Impeller’s shaft.
the motor bracket.
Impeller’s shaft at this time. Take care to align the
water connections so they are accessible.
adapter.
hardware. Tighten the six hex-head cap screws to 90
inch-pounds.
Multi-Spring Seal
The basic installation procedure for a multi-spring seal is the
same as for the single bellows seal. The exception is that a
multi-spring seal has 4 set screws which need to be tightened
on the Impeller shaft.
Double Seal
1. Remove the motor adapter from the motor’s face (the pump
has previously been removed).
2. Install the stationary seal faces.
a. Lubricate the stationary faces’ o-rings with a rubber
lubricant emulsion or soapy water. Keep the polished
surfaces of the seal face clean.
NOTE: Never use a petroleum product for lubrication.
Doing so will affect the seal elastomer’s performance
after reassembly.
b. Carefully press the stationary faces into the housing
cover and the cooling collar (use a piece of cardboard
to protect the seal while pressing against the stationary
face). The smoothest side of the stationary face
should be facing outward.
NOTE: If using a special seal material, it is vital that the
special stationary seal face is pressed into the housing
cover.
3. Install the rotating faces and cooling collar to the motor
adapter.
3
a. Carefully slide the housing cover over the impeller’s
shaft. The side of the housing cover with the pressed-
in seal face should be away from the impeller.
b. Separate the rotating head of the seal from the spring.
NOTE: If using a special seal material, it is vital that the
special seal face mates against the housing cover’s station-
ary face.
c. Lubricate the impeller’s shaft, then carefully slide the
rotating face of the seal over the Impeller’s shaft using
a twisting motion. The carbon or special side of the
rotating face should be toward and pressed against
the stationary face of the housing cover.
CAUTION: The carbon or special portion of the seal is
easily damaged. Take care not to apply uneven force or
crack the carbon or special material while installing.
d. Place the seal’s spring into position on top of the
installed rotating face.
e. Relubricate the impeller’s shaft and then carefully slide
the second rotating face of the seal over the Impeller’s
shaft using a twisting motion (the carbon side of the
second rotating face should be facing away from
the other rotating face). This will require some com-
pression of the seal’s spring.
f. Place the cooling collar’s o-ring into position. Slide the
cooling collar onto the Impeller’s shaft, with the
stationary face in the cooling collar pressed against
the second rotating face. Continue to slide the cooling
collar until it mates against the housing cover. Hold
the cooling collar in this position. Take care to align
the water connections so they are accessible.
NOTES:
1) The seal’s spring must be compressed further in
order to mate the cooling collar and housing cover.
2) Take care not to pinch the cooling collar’s o-ring. If
the o-ring is not properly seated, the cooling collar
will leak.
4. Place the pump components onto the motor adapter.
While holding the cooling collar against the housing cover,
install the assembly into the motor adapter. The motor
adapter will hold the cooling collar in place. It will now
be necessary to hold the impeller to keep the seal’s spring
compressed.
5. Carefully place the assembly in position to the motor’s
face.
a. Screw the impeller onto the motor shaft or shaft adapter.
Use a drop of Blue 242 Loctite on the motor shaft or
shaft adapter (item 20) threads. It will be necessary to
hold the motor’s fan with a screwdriver to keep the motor
shaft from turning.
b. Align the motor adapter so that the access hole is
straight up.
c. Bolt the motor adapter to the motor using the hex-head
cap screws and lock-washers.
d. Double check the alignment of the water connection
holes in the cooling collar.
6. Install the impeller housing.
a. Install the housing cover’s o-ring.
b. Place the impeller housing into position and install the
hardware. Tighten the six hex-head cap screws to 90
inch-pounds.
c. Look through the discharge of the pump to verify prop
er spacing between the impeller and the housing cover.
If using a 56C or metric motor adapter, adjust the shaft
adapter if necessary (refer to the “assembly”section of
these instructions).
TrOuBLESHOOTINg
NO OR INSUFFICIENT FLOW
1. Pump not primed.
2. Closed valve.
3. Viscosity too high.
4. Air leaks in suction piping.
5. Discharge head higher than anticipated.
6. Suction lift too high or insufficient NPSH. Check also for clogged
suction line.
7. Motor wired for wrong rotation.
INSUFFICIENT PRESSURE
1. Air or gasses in liquid.
2. Impeller diameter too small.
3. Discharge head higher than anticipated.
4. Motor wired for wrong rotation.
LOSS OF PRIME
1. Leaking suction line.
2. Foot valve or suction opening not submerged enough.
3. Foot valve too small or leaking.
4. Air or gasses in liquid.
5. Foreign matter in impeller.
EXCESSIVE POWER CONSUMPTION
1. Head lower than rating. Excessive flow.
2. Specific gravity or viscosity of liquid is too high.
EXCESSIVE VIBRATION
1. Loose piping or bolts.
2. Pump cavitating from improper suction or feed.
4
Item Description Part No.
Impeller Housing
Polypropylene NPT M100101-1
1
PVDF NPT M100101-2
Polypropylene BSP 108173-1
PVDF BSP 108173-2
Housing Cover
2
Polypropylene M100109-1
PVDF M100109-2
Impeller
2-1/2", PVDF - for bellows/multispring seal models A101705-3
3-1/2", PVDF - for bellows/multispring seal models A101705-2
3
4-1/2", PVDF - for bellows/multispring seal models A101705-1
2-1/2", PVDF - for double seal models A101705-6
3-1/2", PVDF - for double seal models A101705-5
4-1/2", PVDF - for double seal models A101705-4
Cooling/Press Collar
5
Polypropylene M100112
(std for double seal, optional for bellows/multispring seals)
Motor Adapter
NEMA 56C, 143/145TC M101572-1
6
IEC 80 frame M101572-2
IEC 90 frame M101572-3
(standard options - contact factory for additional options)
Seals
Bellows - C/R/V J100108
7
Multispring - C/RH/V J100109
Double - C/RH/V,C/RH/V J100110
Retaining Ring
8
Stainless steel J100111
Hex Bolt
9
Stainless steel (6 required) J100112
Flat Washer
10
Stainless steel (6 required) J100113
Hex Bolt
NEMA 56C - stainless steel (4 required) J100114
11
IEC 80 frame - stainless steel (4 required) J103780
IEC 90 frame - stainless steel (4 required) J103662
Item Description Part No.
Lock Washer
NEMA 56C - stainless steel (4 required) J100115
12
IEC 80 frame - stainless steel (4 required) J100672
IEC 90 frame - stainless steel (4 required) J102282
Housing O-ring
14
FKM J100116
EPDM J100117
Cooling Collar O-ring (std for double seal, optional for bellows/multispring seal)
FKM J100118
15
EPDM J100119
Cooling Collar Seal
17
Lip seal - for bellows and multispring seal models only J100120
Slinger Ring
18
Neoprene M100115
Shaft Adapter with Set Screws
NEMA 56C A100856
20
NEMA 143TC, 145TC A100857
IEC 80 frame A100859
IEC 90 frame A100860
Set Screw
20A
Cap point, stainless steel (4 required) J100220
Cooling Collar Assembly
21
w/ FKM o-ring & lip seal A100185
(for bellows & multispring seals models)
Protective Guard
22
Left side M101637-1
Right side M101637-2
Guard Shroud Screw
23
Stainless steel J100932
Restrictor Bushing
*
TFE (use with bellows seal and item 5 &15) M100346
Pipe Plug
*
1/8”, 316SS - for use w/ restrictor bushing option
NOTE: All GP Series pumps use PVDF Impellers.
J103312
5
WArrANTY
Finish Thompson, Inc (manufacturer) warrants this pump product to be
free of defects in materials and workmanship for a period of one year
from date of purchase by original purchaser. If a warranted defect,
which is determined by manufacturer’s inspection, occurs within this
period, it will be repaired or replaced at the manufacturer’s option,
provided (1) the product is submitted with proof of purchase date and
(2) transportation charges
under this warranty is ex
product or parts thereof and is in lieu of any other warranties, either
expressed or implied. This warranty does apply only to normal wear of
the product or components. This warranty does not apply to products
or parts broken due to, in whole or in part, accident, overload, abuse,
chemical attack, tampering, or alteration. The warranty does not apply
to any other equipment used or purchased in combination with this
product. The manufacturer accepts no responsibility for product damage or personal injuries sustained when the product is modified in any
way. If this warranty does not apply, the purchaser shall bear all cost
for labor, material and transportation.
Manufacturer shall not be liable for incidental or consequential damages
including, but not limited to process down time, transportation costs,
costs associated with replacement or substitution products, labor costs,
product installation or removal costs, or loss of profit. In any and all
events, manufacturer’s liability shall not exceed the purchase price of
the product and/or accessories.
are prepaid to the manufacturer. Liability
pressly limited to repairing or replacing the
OTHEr FTI prOducTS
Drum Transfer Pumps are available in sanitary construction, stainless
steel, polypropylene and CPVC. Flows to 40 gpm, discharge heads to
80 feet and viscosities to 100,000 cP.
Portable Mixers for turbine mixing and blending handle viscosities to
1,000 cP with gentle, non-vortex circulation. Available in 316 stainless
steel construction.
Sealed Centrifugal Pumps in polypropylene, CF PVDF, 316 SS, and
Hastelloy C come with a wide variety of sealing materials. Flows to 250
gpm, discharge heads to 130 feet and temperatures to 200°F (104°C).
Sealless Mag Drive Centrifugal Pumps in polypropylene, CF PVDF and
ductile cast iron. Flows to 330 gpm and discharge heads to 325 feet.
Handle temperatures up to 220°F (104°C) and have 30 minute run-dry
capability. Mount to standard frame motors.
For further information, contact Finish Thompson Inc. or your local distributor.
cHEMIcAL rEAcTION dIScLAIMEr
The user must exercise primary responsibility in selecting the product’s
materials of construction, which are compatible with the fluid(s) that
come(s) in contact with the product. The user may consult Finish
Thompson, Inc. (manufacturer) and a manufacturer’s representative/
distributor agent to seek a recommendation of the product’s material of
construction that offers the optimum available chemical compatibility.
However neither manufacturer nor agent shall be liable for product
damage or failure, injuries, or any other damage or loss arising out of
a reaction, interaction or any chemical effect that occurs between the
materials of the product’s construction and fluids that come into contact
with the product’s internals.
OrdErINg SpArE pArTS
Spare parts can be ordered from your local distributor. Always refer
to pump model number to avoid error.
TECH SERVICE 1-800-888-3743
Literature ID No. FT00-788H
Part Number J102486, Rev 14, 3-26-13
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