Pentair Fairbanks Nijhuis 6300-1 User manual

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
MODEL 6300-1
PROPELLER PUMPS
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
Part #FM-03-524 | © 2013 Pentair Ltd. | 01/07/13

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Installation, Operation and Maintenance
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Fig. 1

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GENERAL INFORMATION:
The entire weight of the complete unit is supported by the base or oor plate, which is usually set at the operating
oor level (see Fig. 1). The foundation should be designed to support this weight evenly on all sides of the base plate
and allow the unit to hang perpendicularly through the oor opening provided for it. It is important to obtain uniform
support for the base plate and to avoid deection of the column. If for any reason the pump is necessarily installed so
that the base plate is not uniformly support on all sides, the foundation must be changed to eliminate this condition.
This condition may arise when bolting the pump discharge ange to existing discharge pipe. Discharge piping must
be supported to avoid deection of the pump.
CALIFORNIA PROPOSITION 65 WARNING:
This product and related accessories contain chemicals known to the State of California to
cause cancer, birth defects or other reproductive harm.
GENERAL INSTALLATION:
For information about specic types of driver and lubrication, see the respective topics on the following pages of this
instruction book. Read the sections applicable to the pump being installed BEFORE beginning the installation work.
1. Uncrate and check all parts carefully to make certain that none are missing or damaged. Clean all threads and
mating surfaces thoroughly and remove any burrs or nicks which would interfere with precise fit and assembly.
Lay the parts out in an orderly manner for convenient assembly in the proper sequence. Be sure to clean all
dirt and grit from all parts. Cover or otherwise protect them from becoming covered with gritty substances prior
to assembly.
2. Make up the shaft and shaft enclosing tube subassemblies. Inspect tubes and bearings to be sure no grit,
shavings or other loose foreign matter is present. Start with the bottom tube, which may have a bell end to fit the
pump bearing and tube connector, and attach the next intermediate tube making up a tube assembly equal to
the shaft in length. Wipe the bottom drive shaft carefully to remove any dirt, grit or foreign matter and insert it in
the shaft enclosing tube bearings. Proceed in like manner to assemble the remainder of the shaft and enclosing
tube sections.
NOTE: For tube sizes of 3" diameter and smaller, the shaft enclosing tube is usually shipped assembled in ten-
foot sections. It will, therefore, be unnecessary to do any assembly work. It IS necessary to thoroughly inspect the
assembly for the presence of loose foreign material which could damage the bearings in operation.
3. In locations where there is sufficient overhead clearance to hoist the column and elbow sections over the
shaft and shaft enclosing tube sections when they are in place, nothing further need be done with these
subassemblies at this time. When
there is insufficient head clearance, it
will be necessary to put the shaft and
enclosing tube subassemblies through
the corresponding column sections
and secure them with slings fastened
around the bottom end of the column.
4. Hoist the bowl assembly and lower it
through the hole in the floor. Support
the bowl assembly by means of two
I-beams set under the top bowl flange
and resting on the mounting floor,
secured as illustrated in Fig. 2.
Assuming sufficient overhead
clearance, the next step is to hoist the
shaft and enclosing tube into positions
above the bowls. Lubricate the threads
and assemble the drive shaft, coupling
and pump shaft to obtain equal lengths
of thread engagement on each shaft. Fig. 2 – Bowl assembly supported in channel irons for installation

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Make the joint up tight. Lower the shaft enclosing tube and assemble it to the upper bowl bearing and tube
connector, pulling the joint up tight. Inspect the joint to make certain that the tube is firmly seated all around. Any
foreign matter such as small metal particles or injuries to either of the mating surfaces could result in imperfect
seating of the enclosing tube, thereby causing misalignment of bearings and subsequent trouble when the
machine is in operation.
5. Hoist the bottom column (or elbow section when a one-piece column and elbow is used) into position and bolt
it to the bowls. Inspect the joint for uniform seating at all points. Hoist this portion of the pump assembly, insert
and tighten the remainder of the flange bolts and remove the I-beam supports. Lower the unit sufficiently to
again support the unit on the I-beams, this time under the top column flange.
6. Any remaining sections of column, shaft and enclosing tube will be assembled in the same manner.
7. After the complete pump unit has been lowered into position with the base plate resting on the foundation and
before setting the driver in place, slip the tube tension nut onto the shaft. The top tube adaptor and gasket are
shipped fastened to the base plate. Insert the two packing rings into the adaptor, the end joints 180° apart.
The packing will be forced into the tube threads, making a watertight seal when the tube tension nut is being
tightened up. Slip the top tube bearing over the top shaft and secure it in the enclosing tube.
NOTE: The final tightening of the tension nut can be delayed until the driver has been installed. For tensioning the
tube, use a large pipe wrench with a piece of pipe of sufficient length on the handle to make a lever arm about 48"
long from the center of the shaft. For enclosing tubes over 4-1/2" in diameter, a six-foot lever arm may be used.
It will take as much pull as one man can exert on this extended wrench to get the nut pulled up sufficiently tight to
obtain proper tension in the tube.
8. Fasten the oiler bracket to the motor pedestal. Secure the oiler on the bracket and connect the oil line tube to
the oiler and to the top tube bearing.
9. The motor may now be installed. The installer must be careful to avoid damage to the top shaft when lowering
the motor over it. The proper motor rotation is counterclockwise when viewed from the top. Check for proper
rotation before connecting to the shaft.
10. After proper rotation has been established set the motor jaw clutch in place, insert the gib key, run the adjusting
nut down on the shaft and adjust the propeller (see "Adjusting Propellers" on page 7).
NOTE: Paragraphs 7 through 10 refer to a motor driven, oil lubricated pump. For further instructions on this and other
types of equipment see the applicable type on the following pages.
Motor Drive:
When the pump is motor driven, foundation bolts are not subjected to any appreciable load and could be dispensed
within some applications. They may be smaller than the size of the drilled holes in the base plate indicate.
The motors supplied with propeller pumps are usually jaw type without nonreverse ratchet. It is, therefore, vital to be
certain of the direction of rotation of the motor before applying full power with the drive clutch in place, keyed to the
shaft. Applying full power with reversed rotation will doubtlessly uncouple the shaft and make it necessary to pull
the pump to get the shaft reassembled.
The motor should be lubricated in accordance with instructions included on the lubrication nameplate attached to the
stator frame.
Belt Drive:
When the pump is belt driven it is necessary to use foundation bolts in all applications to counteract the belt pull.
The belt drive assembly is hoisted over the top shaft and lowered into position and bolted down. Exercise due care
to avoid damage to the top shaft when installing the belt drive unit. Inspect the joint at the bottom of the unit to be
certain that a uniform fit all around has been obtained. Foreign matter between the mating surfaces or nicks and
similar damage can cause an imperfect fit. This will result in misalignment and subsequent trouble when the pump is
in operation.

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Lubricate the belt drive unit with a good grade of light oil of 20 to 30 SAE rating by filling the ball bearing housing to
the level indicated in the filler cups when pump is not operating.
Apply the adjusting nut and adjust the propeller (see "Adjusting Propellers" on page 7)
Gear Drive:
Installation of the gear drive unit is the same in every respect as installation of the belt drive unit. (Consult the
instructions furnished by gear manufacturer for operation of the gear.)
Thrust Stand and Flexible Coupling Drive:
Install the thrust stand assembly in the same manner as that used for the belt drive. Place the motor pedestal over
the thrust stand and fasten it down. Inspect joints to make certain that a uniform fit has been obtained all around.
Foreign matter between mating surfaces or nicks and similar damage can cause an imperfect fit. This will result in
misalignment and subsequent trouble when the pump is in operation.
When the thrust stand and lower coupling have been secured in place, apply the adjusting nut and adjust the
propeller (see "Adjusting Propellers" on page 7).
Place the leather links on the drive pins in the lower half of the flexible coupling (see Fig. 3). Pull the coupling links
into position so that the open end is to the left of the end placed on the lower coupling half drive pin when viewed from
the top. This will allow the links to carry the torque load in tension. They have been designed to pull the load – and will
NOT "push" it.
Fasten the coupling upper half to the shaft of the driver
with the key and set screw provided with the unit. The drive
pins should project downward to engage the free end of
the leather links installed on the lower half. Set the driver in
place on the pedestal. When lowering driver with coupling
half attached, be careful to avoid damage to the coupling
links. The coupling links will have a very snug fit on the pins
when new. Oil the pins and links for easy assembly.
The driver pedestal and upper coupling half hub are
designed so that the propeller may be adjusted without
removing the driver. To accomplish this, loosen the set
screws on the driver shaft and slide the upper coupling half
toward the driver to disengage the drive pins and leather
links. The adjusting nut will now be accessible.
Lubricate the thrust stand unit with a good grade of light oil of
20 to 30 SAE rating, by filling the ball bearing housing to the
level indicated in the filler cups when pump is not operating.
OIL LUBRICATED PUMPS:
The standard oil lubricated unit (see Fig. 1) has either a
hand or solenoid operated sight feed oiler mounted on the
pedestal which feeds oil through a copper tube to the top
tube bearing from which it drips down the shaft enclosing
tube, lubricating the bearings en route. In addition to the line
shaft bearings, the oil from this source also lubricates the
discharge bowl bearings.
When installing the pump it is good practice to pour oil (a maximum of 2 tbsp. per 10' section) into the shaft enclosing
tube. This will quickly and positively establish lubrication to every bearing before the pump is started.
For pumps of standard oil lubricated construction with hand or drip feed oiler, use oil of the following specifications
for the line shaft bearing: High grade mineral oil having a viscosity of 250 to 270 SSU at 130°F. The oil may contain
oxidation and rust inhibitors. Automotive oils should be avoided since many contain detergents that are harmful to this
particular type of equipment.
Fig. 3 – Thrust stand and flexible coupling assembly

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Where special lubrication systems are employed, follow the specific instructions for that type of lubrication.
The suction bowl bearing is lubricated at factory with a heavy oil such as SAE 160 gear lubricant, retained in the
lower bearing by the suction bowl cap. There is an exception to this rule in the case of pumps in which the customer
has specifically ordered a separate lubrication line from the base plate to the suction bowl bearing. Lubrication of this
bearing is then accomplished by filling the separate grease line with SAE 160 gear lubricant by means of a suitable
oil or grease gun before starting the pump and replenishing the supply every few days thereafter, depending upon the
operating conditions.
Adjust the sight feed oiler for 10 to 15 drops per minute for the first five hours of initial operation. Then reduce the oil
feed to approximately 6 drops per minute.
WATER LUBRICATED PUMPS:
In the water lubricated construction, the shaft and bowl bearings are manufactured from a suitable rubber or artificial
rubber compound that is especially adapted to this service. The line shaft journal sleeves are made of a stainless
material in the standard pump, and the pump shaft is of stainless material, the same as in the oil lubricated pump.
The suction bowl bearing, as all other bowl bearings, is also water lubricated. The cap is left off to allow the water
to enter the lower bearing freely.
The bearing retainers are welded to the inside of the column pipes. The rubber bearings are shipped installed in the
retainers. They should be inspected to see that there is no foreign matter in the bearing or in the retainer pocket.
THERE MUST BE NO GREASE OR OIL ON THE RUBBER BEARING.
Before raising the column pipe or elbow section into place, the line shaft should be placed inside the column pipe
and passed through the rubber bearing or floor plate opening. The shaft should be fastened to the column pipe by
throwing a timber hitch around the column about 3 feet from the top end and a clove hitch around the shaft, using a
hemp rope.
Column and shaft assembly should be made much in the same manner as described in the foregoing paragraphs 1
through 6 (General Installation) except that the shaft enclosing tube is not used with water lubricated shafting.
In all operations care must be taken not to injure the drive shaft by bending it or damaging the threads. Attaching a
coupling to each end of the line shaft will help to protect the threads. The coupling attached to the bottom end of the
shaft must be taken off, of course, before the shaft can be screwed into the coupling of the next lower shaft. A step
coupling will be required for some pump sizes to make the line shaft connection to the pump shaft.
ELECTRICAL INFORMATION FOR INSTALLATION
OF ESSEX MODEL 377 SOLENOID OILER
Check voltage to be sure that coil has the same voltage as the
equipment on which it will be used. Coil voltage should show plainly on
the coil housing. Incorrect voltage will result in failure of lubricator to
open or in damage to coil.
For all single voltage coils, connect the two leads from the coil to any
two leads on the load side of the magnetic starter or to any two leads at
the motor. The diagrams at right illustrate how this may be done.
Combination voltage coils with four leads are wired in series for higher
voltage or in parallel if used with the low voltage. For example, if a coil
marked 220/440 volt 60 cycle is used in a 220 volt 60 cycle circuit, join
the black and yellow leads and connect to one motor lead or to one lead
on the load side of the starter or switch. Join the green and red leads
and connect to one of the other motor leads, or to one of the other leads
on the load side of the starter or switch.
For installation in 440 volt 60 cycle circuits join the green and yellow
leads in a dead end splice and connect the black and the red leads to
the motor or the load side of the starter or switch.

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Before mounting the driver, see that the packing box gasket is in place on the faced surface of the floor plate. Slip the
packing box assembly and the water slinger (above it) over the top shaft. The packing box may now be mounted onto
the floor plate. The water slinger ring should be adjusted later at approximately 1/4" below the driver.
In starting the pump for the first time, or after repacking the stuffing box, tighten the gland only thumb-tight until after
the pump is in operation. Then tighten gland further with a small wrench, if necessary, until there is only a very slight
trickle of water to keep the packing lubricated. If the gland starts to leak excessively, tighten it promptly. When the
gland is screwed clear down, back it off and add a ring of packing. Give the packing gland grease cup one or two
turns each time the pump is started, or at least twice a day if the pump is operating continuously or automatically.
ADJUSTING PROPELLERS:
FIGURE 6310 PROPELLERS:
The Fig. 6310 pump has a cylindrical bowl seat section. It is designed to operate best with the propeller set halfway
between the extreme upper and lower limits of travel possible with end play at the pump.
To adjust the propeller, run the adjusting nut down, finger-tight on the top shaft. Try turning the motor drive clutch
by hand. If it doesn't turn freely, the propeller is in the extreme low position, resting on the bowl hub. Measure the
length of top shaft projecting above the motor drive clutch. Tighten the adjusting nut down until the propeller is in
the extreme upper position. This will be the point at which the clutch can no longer be turned easily by hand. Again,
measure the length of top shaft projecting above the clutch. Deduct the first measurement from the second. Lower
the propeller one-half the difference between the two measurements.
FIGURE 6360 PROPELLERS:
The Fig. 6360 pump is constructed with an inclined bowl seat. The propeller vanes must run very close to the bowl
seat to obtain best performance from the pump. However, it is injurious to the pump, and usually to the motor, to run
the propellers too low. Greater care must be exercised when adjusting Fig. 6360 propellers than is necessary on
Fig. 6310 propellers.
Run the adjusting nut down on the top shaft and tighten it until the propeller just clears the bowl seat. This point can
be determined by turning the motor drive clutch by hand. When the propeller is contacting the seat of any point, the
"drag" can be readily felt. When the propeller clears at all points, the clutch will turn easily. Locate the point where
the propeller just clears, as accurately as possible. Then raise the propeller approximately 1/16". The adjusting nut
has six equally spaced set screws to lock it in place. It may not be possible to raise the propeller exactly 1/16" and
lock it at that point without tightening the set screw on the top shaft threads. Turn the nut down until the nearest set
screwhole matches the keyway in the shaft and lock it in place. This will raise the propeller slightly more than 1/16"
off the bowl seat.
After the pump has run for five minutes (pumping water), stop it and check the propeller adjustment.
GENERAL MAINTENANCE OF PROPELLER PUMPS:
Fairbanks Nijhuis propeller pumps are of simple, rugged design and require a minimum of adjustment and servicing
in the field. Ordinary good maintenance practice such as keeping the machinery clean and properly oiled is advisable.
It is undesirable to use more oil than the instructions call for. No servicing will be required below the base plate for
normal operation.
When it becomes necessary to pull the pump to replace worn parts, all parts to be reused must be thoroughly cleaned
before reinstalling. At this time the lubricant in the suction bowl bearing should be replaced.
It is always advisable to consult with your local Fairbanks Nijhuis representative concerning the operation
of the pump.
A few precautions should be observed in the system of which the pump is a member:
1. Do not use a valve to throttle the pump. All propeller pumps build up to overload conditions when throttled down
too greatly. Should it be necessary to reduce the quantity of fluid pumped into the line, do so by means of a
bypass. Consult a Fairbanks Nijhuis representative before installing any valves in the pumping system.
2. Do not allow floating objects such as large lumber clippings, rags or similar objects to go through the pump.
When operating in a forebay or sump that is not adequately screened, a strainer should be installed
on the pump.

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3. Do not allow a water lubricated pump to run dry. If any doubt of continuous submergence of the pump suction
exists, safety devices should be installed to shut the pump down before the point of danger is reached.
4. If excessive vibration or noise occurs when the pump is in operation, consult with a Fairbanks Nijhuis pump
representative. It is absolutely necessary to determine whether mechanical or hydraulic conditions are causing
the trouble in order to find a remedy for it. Persons untrained in propeller pump engineering and operation
should not be engaged to troubleshoot on this equipment.
SUPPLEMENT TO INSTRUCTIONS 6300-1
FIGURE 6300W – WATER LUBRICATED PUMPS:
The pump bowl shaft is of stainless steel and the line shaft is provided with stainless steel sleeves at the bearings.
The bearings are of cutless rubber and are lubricated entirely by the water pumped.
When the pump unit has more than one column section, the equipment will be shipped dismantled. The installation
procedure will be much the same as that followed with oil lubricated pumps, except that the shaft enclosing tube
is omitted.
Put the shaft with coupling through rubber bearing inside the column pipe, with the shaft coupling (for thread
protection) at the lower end, and hoist both column and shaft over the pump bowls or the previous column section.
The bearing retainer is usually welded to the inside of the top end of the column. (In a very few special cases the
bearing retainers may be shipped separate.) The cutless rubber bearing is mounted inside the bearing retainer and
is properly secured. Before slipping the shaft through the bearing, check carefully that no foreign matter is present
in the bearing AND THAT THERE IS NO OIL OR GREASE ON THE RUBBER BEARING. Before screwing the shaft
ends together in the coupling, make sure that the threads are clean and the butting surfaces are free of nicks or any
other damage.
The shaft should stand up freely in the center of the bearing without binding the side after the lower column joint
is properly bolted together. If the shaft bears heavily to one side, the column and shaft do not center freely as this
indicates column misalignment or damage to the faces of the shaft or to the column flange, or a crooked shaft. The
shaft threads should be painted with a good thread lubricant before screwing together. Excess lubricant must be
wiped off clean after making up the shaft joint. It is of great importance also to wipe off every trace of oil or grease
from the bearing before lowering the outer column for making up the column joint.
NOTE: All shaft threads are left-hand.
If the discharge is of the underground type, the elbow section should be handled in the same manner as an
intermediate column section.
When installing the motor pedestal (for underground discharge) or a surface discharge head, first remove the packing
box bolted to it. Then lower the pedestal or discharge head over the top shaft and make up the flange joint after
having carefully inspected the fit and mating surfaces for nicks or other damage. Now the entire unit, less motor and
packing box, may be lowered onto the foundation.
Screw the stilling tube, which is packed in the box labeled "Assembly Packing Box and Stilling Tube", tightly into the
threaded end of the packing box. Put the packing box gasket in its place and slip the packing box down over the top
shaft as well as the packing gland and the water slinger ring. The packing rings may now be inserted, staggering
the joints, and the packing gland lowered in place, but the nuts should so far be adjusted only finger-tight. After the
propellers are adjusted and the pump is started for operation, the packing gland should be adjusted to allow a very
slight trickle of water to keep the packing cool and pliable.
The mounting of the motor (or other driver), adjustment of propellers, etc., should be handled as described in
Instructions 6300-1 for oil lubricated units.

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Installation, Operation and Maintenance
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WARRANTY TO BE PLACED HERE