Pentair 1900 Series, 1910, 1940, 1920, 1920F Instruction And Repair Manual

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Page 1

FAIRBANKS NHUIS

INSTRUCTION AND REPAIR MANUAL

HORIZONTAL SPLITCASE PUMPS

Model 1940

Model

1900 SERIES

ENGLISH: PAGES 2-36

INSTRUCTION AND REPAIR 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 1910

Models 1920 and 1920F

Page 2

TABLE OF CONTENTS:

WARRANTY HIGHLIGHTS ...........................................3

INTRODUCTION ..............................................................5

GENERAL ...................................................................5

CAUTION & SAFETY NOTICE .................................. 5–6

PUMP IDENTIFICATION ..............................................6

SAFETY NOTES ...................................................... 6–7

HOUSEKEEPING ......................................................... 7

ENVIRONMENTAL CONDITIONS .................................7

STORAGE OF PUMPS ...................................................... 7

GENERAL ................................................................... 7

CONSIDER A UNIT IN STORAGE .................................. 7

SHORT-TERM STORAGE ........................................8

LONG-TERM STORAGE ..........................................8

THREE MONTHS TO ONE YEAR ..............................8

OVER ONE YEAR ................................................ 8–9

REMOVING FROM STORAGE .......................................9

INSTALLATION ..............................................................9

NET POSITIVE SUCTION HEAD (NPSH) ..................... 10

WET WELL DESIGN .................................................. 10

LOCATION AND HANDLING ................................... 10–11

FOUNDATION ............................................................ 11

LEVELING OF THE UNIT ............................................ 11

GROUTING ............................................................ 11-12

PIPING ...................................................................... 12

INITIAL COUPLING ALIGNMENT ............................... 12

PERIODIC CHECK ..................................................... 13

AUXILIARY PIPING CONNECTIONS ........................... 13

ROTATION ................................................................ 14

OPERATION.................................................................. 14

GENERAL ................................................................. 14

OPERATING AT REDUCED CAPACITY ....................... 14

PRIMING ................................................................... 15

STARTING THE PUMP ............................................... 15

NORMAL OPERATION ...........................................15–16

STOPPING THE PUMP ............................................... 16

NORMAL SHUTDOWN ............................................... 16

EMERGENCY SHUTDOWN ........................................ 16

BEARING OPERATING TEMPERATURE ..................... 16

TROUBLESHOOTING .....................................................17

PUMP ...................................................................17–19

MOTOR ...........................................................20–21

REPAIR MANUAL .........................................................22

SERVICE ......................................................................22

LUBRICATION OF BEARINGS .............................. 22–23

REPAIRS ......................................................................23

DISASSEMBLY OF THE PUMP ............................. 23–25

MECHANICAL SEALS ..................................... 25–26

REASSEMBLY .................................................... 26–27

STANDARD PACKING ........................................... 27

MECHANICAL SEAL ....................................... 27–30

STARTING PUMP AFTER REASSEMBLY .................... 31

ORDERING PARTS ............................................... 31-35

RECOMMENDED SPARE PARTS ................................ 31

PREDICTED LIFE ...................................................... 31

PARTS LIST ..............................................................32

MISCELLANEOUS NUMBERED PARTS ......................32

PUMP EXPLODED VIEWS .................................... 33–35

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WARRANTY:

WARRANTY HIGHLIGHTS:

1. Seller warrants products of its own manufacture and workmanship under normal use and service according to previously submitted terms and conditions letter or form KC585.

2. Accessories and components not manufactured by seller are warranted only to the extent of the original manufacturer's warranty.

3. No allowances will be made for repairs or alterations effected without specific written authorization from seller.

4. Repairs or alterations made with other than genuine Fairbanks Nijhuis™ original equipment parts may void the warranty and relieve the seller of all product responsibility.

5. This warranty is void unless the purchaser provides protective storage, installs and maintains the equipment in accordance with manufacturer's instructions.

6. Under the terms of this warranty, seller shall not be responsible nor liable for:

a. Consequential, collateral or special losses or damages.

b. Equipment conditions caused by fair wear and tear, abnormal conditions of use, accident, neglect, or misuse of

said equipment.

c. Labor charges, loss or damage resulting from supplying of defective part(s) or improper repairs by unauthorized

person(s).

d. Damage caused by abrasive materials, chemicals, scale deposits, corrosion, lightning, improper voltage or mishandling.

7. The above listed warranty highlights do not constitute our total terms and conditions regarding warranty.

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PRESTART-UP AND START-UP CHECK LIST

Contractor Pump Serial Number

Project Name Pump Model Number

Procedure Yes No N/A Comments

1. Shipment

Was there any damage in transit? Were all items received?

2. Storage

Has equipment been protected from inclement weather? Was equipment subject to flooding? Have all bearings been protected from moisture?

3. Installation

Were retaining fasteners, used in shipping, removed prior to installation? Is grouting under base properly compacted? Is grouting of the non-shrink type? Have proper anchor bolts been used? Have the bolts been properly tightened? Have both the suction and discharge been checked for pipe strain? Are lube lines and seal water lines properly installed? Are accessory items, RTD’s, bearing temp detectors, vibration sensors, etc.

mounted and properly installed? Are lube lines purged of air and lubricant added? (pump and driver) Are all safety guards in place? Have impellers been checked for proper clearance?

4. Alignment

Has the alignment of driver to pump been checked? Have indicator readings been taken?

5. Rotation

Has the rotation of the drives been checked for correctness? Has the coupling been turned to assure free rotation of pump and motor?

6. System

Has the system been checked to ensure that it is free ot foreign matter which could be damaging to the pump?

Is liquid available to the pump? Has assurance been obtained from responsible parties that all piping is secure

and that the routing of flow has been established and is correct?

7. Start-Up

Has flow been established? Have gauge readings been taken? Has packing been adjusted to ensure proper lubrication of packing? If pumps are equipped with mechanical seals, is the lubricating seal water

pressure a constant 10 to 15 psi above the discharge of the pump? Is excessive vibration present? Is bearing operating temperature excessive?

Customer’s Representative Witnessing Start-Up

Date

Company

Name

Fairbanks Nijhuis™ Pump Corporation Representative Conducting Start-Up

Date

Name

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

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.

INTRODUCTION:

GENERAL:

Congratulations! You are the owner of the finest pump commercially available. If you give it the proper care as outlined and recommended by this manual, it will provide you with reliable service and long life.

This manual contains information that is the result of engineering and research efforts. It is designed to supply adequate instructions for the installation, operation and maintenance of your pump. Failure or neglect to properly install, operate or maintain your pump may result in personal injury, property damage or unnecessary damage to the pump.

These instructions apply to the pump only and have been prepared specifically for the pump supplied on this order. If your operating conditions ever change, always refer to the factory for reapplication. Always refer to the manuals provided by manufacturers of the accessory equipment for their separate instructions.

Variations exist in both the equipment used with these pumps and in the particular installation of the pump and driver. Therefore, specific operating instructions are not within the scope of this manual but should be added by the parties responsible for the operation of the entire station. The manual contains general rules and guidelines for installation, operation and maintenance of the pump. If there are questions regarding the pump or its application, which are not covered in this manual, please contact the factory as follows:

Fairbanks Nijhuis™ 3601 Fairbanks Ave. Kansas City, KS 66106 (913) 371-5000

For information or technical assistance on the drive source, contact the drive manufacturer local dealer or representative.

To obtain additional data on hydraulics and pump selection and operation, we suggest you purchase both of the following reference books:

A. Fairbanks Nijhuis Hydraulic Handbook available from the factory.

B. Hydraulic Institute Standards Hydraulic Institute 9 Sylvan Way Parsippany, NJ 07054-3802

CAUTION AND SAFETY NOTICE:

The installation, use and operation of this type of equipment is affected by various federal, state and local laws and the regulations concerning OSHA. Compliance with such laws relating to the proper installation and safe operation of this type of equipment is the responsibility of the equipment owner, and all necessary steps should be taken by the owner to assure compliance with such laws before operating the equipment. In addition WARNING and CAUTION notes are located throughout this manual. They should be read and observed.

The following symbols are used to alert maintenance personnel to procedures that require special attention or which could damage equipment or could be dangerous to personnel.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

DANGER:

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING:

Indicates a potentially hazardous situation which, if not avoided, could result in serious injury.

CAUTION:

Indicates that improper practices will result in equipment malfunction or failure.

NOTES:

Instructions that will aid in installation, operation, maintenance or that clarify a procedure.

PUMP IDENTIFICATION:

Pertinent nameplate information is shown below. It will aid in obtaining the correct replacement parts for your pump. The serial number is stamped on the discharge flange.

Pump

Serial Number

Model Number

Pump Size

Number Stages

GPM

Head (feet)

*To be copied from motor nameplate.

Speed (RPM)

Driver

Manufacturer

Horsepower

Serial Number*

Full Load Amps

Phase / Hertz / Volts

SAFETY NOTES:

These warnings apply to pumps supplied by Fairbanks Nijhuis™. Refer to the manuals supplied by the driver or control manufacturers for additional warnings before operating this equipment.

Before attempting to service this pump, familiarize yourself with this manual.

DANGER:

Disconnect or lock out the power source to ensure the pump will not start. Check with appropriate electrical test equipment.

Do not attempt to service the pump until the electrical power has been disconnected and it has been verified that the pump cannot start.

Certain procedures in disassembly and assembly require parts be heated to high temperatures. Heat resistant gloves must be worn when handling heated parts. Heated parts can cause severe personal injury.

After the pump has been installed make certain that the pump and all piping connections are tight and are properly supported prior to start-up and operation.

WARNING:

CAUTION:

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

WARNING:

Do not operate the pump without the protective guards in place over the rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel.

CAUTION:

This pump is designed for the exclusive use of pumping water. It should not be used for pumping other media unless a specific Purchase/Buyer agreement is negotiated.

WARNING:

Because many installations use automatic starting equipment, the pump unit may start at any time without warning.

HOUSEKEEPING:

The area surrounding the pump installation area should be kept free of rags and debris. The area should be kept clean and dry and should be checked periodically to ensure there is no water, oil or grease on the floor which could cause accidental slippage of maintenance personnel.

The pump and driver should be kept clean. Any spillage of lubricants on the pump/driver during periodic maintenance should be wiped clean. Loose ends of packing should be picked up and properly discarded after repacking the pump.

Drain lines should be checked to ensure they are functioning properly.

Driver ventilation ports should be kept free to ensure proper cooling of the motor.

ENVIRONMENTAL CONDITIONS:

Pumps are designed to operate in moderate to severe environmental conditions. Normally they should not be operated in an ambient temperature exceeding 130°F or in conditions that would allow the sealing water or the pumped media to freeze.

STORAGE OF PUMPS;

GENERAL:

If the equipment is not to be immediately installed and operated, store it in a clean, dry, well-ventilated place, free from vibrations, moisture and rapid or wide variations in temperature.

Improper storage and preservation could damage the equipment which would result in non-warranty covered restoration requirements or non-warranty covered product failures.

CONSIDER A UNIT IN STORAGE:

1. When it has been delivered to the job site and is awaiting installation.

2. When it has been installed but operation is delayed pending completion of construction.

3. When there are long (30 days or more) periods between operation cycles.

4. When the pump is shut down for periods of longer than 30 days.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

SHORT-TERM STORAGE:

Short-term storage is when the pump will be stored for periods not exceeding three months. The following are the shortterm storage requirements:

A. Rotate the shaft for several revolutions at least once every two weeks to:

1. Coat the bearing with lubricant.

2. Retard oxidation or corrosion.

3. Prevent possible false Brinelling.

LONG-TERM STORAGE:

Long-term storage is when the pump will be stored for periods exceeding three months. The following are long-term storage requirements:

THREE MONTHS TO ONE YEAR:

1. Remove gland halves, packing and seal water ring from the stuffing box. Package them in a suitable container to prevent loss or damage. Coat the inside of the stuffing box with grease.

• If the pump is equipped with a mechanical seal, remove the pipe plug in the stuffing box and pour at least 4 ounces of mineral oil into the seal housing. Reinstall the pipe plug.

2. Fill the bearing housings with specified lubricating grease until grease exits from relief fittings.

3. Wipe clean all exposed machined surfaces and coat with a heavy layer of grease or other equivalent rust prevention material.

4. Cover the suction and discharge of the pump with cardboard or wood to prevent entry of foreign material or varmints.

5. Rotate the pump shaft several times by hand repeating this every two (2) weeks during storage. Rotation of the shaft will coat the bearings and retard oxidation, preventing possible false Brinelling.

OVER ONE YEAR:

1. Remove gland halves, packing and seal water ring from the stuffing box. Package them in a suitable container

to prevent loss or damage. Coat the inside of the stuffing box with grease.

• If the pump is equipped with a mechanical seal, remove the pipe plug in the stuffing box and pour at least 4 ounces of mineral oil into the seal housing. Reinstall the pipe plug.

2. Fill the bearing housings with specified lubricating grease until grease exits from relief fittings.

3. Clean all accessible machined surfaces to remove dirt, corrosion, grease and any other foreign matter. Clean water passages to remove all foreign matter. Dry the pump to remove all moisture.

4. Spray flushing water and seal water piping with P-7 medium preservative oil. Seal all water inlet connections with pipe caps or plugs.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

5. All internal surfaces in contact with water should be sprayed with Grade 5 of MIL-C-ISI73 Corrosion Preventive Compound, solvent cut back. Drain all excess compound by removing drain plugs. Treat the drain plugs with P-I or P-I9 preservative, replace and tighten.

6. Apply P-2 preservative to all exposed shaft surfaces.

7. Cover inlet and outlet nozzles with Grade A of MIL-B-I21 barrier material and a blank flange of mild steel

(1/16" minimum thickness), tempered hardboard (114" minimum thickness) or fully waterproofed plywood (114" minimum thickness). Secure the flanges with at least 4 bolts with lockwashers.

8. Wrap the shaft, the frame and the stuffing box area with grease-proof barrier material, conforming to Type I,

Grade A of MIL-B-I2I. Secure the barrier with waterproof pressure sensitive tape.

9. Rotate the pump shaft several times by hand repeating this every two (2) weeks during storage. Rotation of the

shaft will coat the bearings and retard oxidation, preventing possible false Brinelling.

REMOVING FROM STORAGE:

After the storage period is over and prior to operating the pump, remove the cover on the thrust bearing housing for inspection of the bearing lubricant. If any water or foreign matter is found in the lubricant, all bearings must be cleaned and the lubricant replaced.

Refer to the Installation section of this manual for installation instructions.

After the pump has been set and grouted in place and is ready for operation, the following steps should be followed:

1. Reinstall the packing, seal water ring and gland. Adjust in accordance with this manual. Flush the mineral oil out of the mechanical seal if unit is so equipped.

2. Remove bearing housing covers and remove one-half of the grease in bearing housings. Remove all grease relief fittings and grease relief nipples from upper and lower bearing housings.

3. Start the pump per start-up instructions and permit grease to be purged from each bearing housing. Do not install grease relief piping until purging has completely stopped after the pump has been in operation for at least eight (8) hours. Observe bearing temperatures, and stop and start the pump or run it at reduced speed until temperatures stabilize within the specified limits.

4. Stop the pump, wipe any grease off the shaft and bearing frame and place the pump in service per instructions in this manual.

DANGER:

Do not attempt to clean the pump until electrical power has been disconnected and it has been verified that the pump cannot start.

INSTALLATION:

Carefully read all sections of this manual and all other instruction manuals provided by manufacturers of other equipment supplied with this pump.

Upon receipt of the shipment, unpack and inspect the pump and driver assemblies and individual parts to ensure none are missing or damaged. Carefully inspect all boxes and packing material for loose parts to ensure none are missing or damaged. Carefully inspect all boxes and packing material for loose parts before discarding them. Report immediately to the factory, and to the transportation company involved, any missing parts or damage incurred during shipment, and file your “damaged and/or lost in shipment” claim with the carrier immediately.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

NET POSITIVE SUCTION HEAD (NPSH):

NPSH can be defined as the head (energy) that causes liquid to flow through the suction pipe and enter the eye of the impeller.

NPSH is expressed in two values:

1. NPSH required (NPSHR).

2. NPSH available (NPSHA).

It is essential that NPSHA always be greater than NPSHR to prevent cavitation, vibration, wear and unstable operation.

NPSHR is a function of the pump design and therefore varies with the make, size, capacity and speed of the pump. The value for your pump can be obtained from your pump performance curve or the factory.

NPSHA is a function of your system and may be calculated as follows:

A. When the source of liquid is above the pump:

1. NPSHA = barometric pressure (feet) + static suction head (feet)* – friction losses in suction piping (feet) – vapor pressure of liquid (feet).

B. When the source of liquid is below the pump:

1. NPSHA = barometric pressure (feet) static suction lift (feet)* – friction losses in suction piping (feet) – vapor pressure of liquid (feet).

*The datum elevation plane for horizontal pumps is the pump centerline.

WET WELL DESIGN:

Generally, it is required that an evenly distributed flow of non-aerated water be supplied to the pump suction. Improper wet well or sump design or insufficient suction pipe submergence can result in intake vortexing which reduces the pump’s performance and can cause severe damage to the pump.

We recommend that you secure the advice of a qualified Consulting Engineer for the analysis and design of the wet well. Significant engineering data on wet well design is provided in the Hydraulic Institute Standards.

Upon request, Fairbanks Nijhuis™ will review plans and give general comments on the installation, but will not approve such plans for a specific installation and will accept no responsibility or liability for the performance of the pump intake structure.

LOCATION AND HANDLING:

The pump should be installed as near the fluid as possible so a short direct suction pipe can be used to keep suction losses at a minimum. If possible, locate the pump so the fluid will flow to the suction opening by gravity. The discharge piping should be direct and with as few elbows and fittings as possible. The total net positive suction head available (NPSHA), which includes the suction lift and pipe friction losses, must be greater than the net positive suction head required (NPSHR) by the pump.

The pump and driver should be located in an area that will permit periodic inspection and maintenance. Head and access room should be provided and all units should be installed in a dry location with adequate drainage.

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1900 Series Horizontal Splitcase Pumps

SHIMS TO LEVEL BASE PLATE

WOODEN DAM ON BOTH ENDS

TWISTED TENSION WIRE

ROLLED STEEL BASE

FOUNDATION BOLTS

SOUPY GROUT

Instruction and Repair Manual

WARNING:

Do not pick up the complete unit by the driver eye bolts or pump shaft.

FOUNDATION:

The pump foundation should have a level surface and be of sufficient mass to prevent vibration and form a permanent rigid support for the unit. The most satisfactory foundations are concrete with anchor bolts of adequate size embedded in the foundation in pipe sleeves with an inside diameter 2-1/2 times larger than the bolt diameter. This will allow for final accurate positioning of the unit.

Recommended anchor bolt design is available from the factory.

LEVELING OF THE UNIT:

Lower the unit onto the foundation and position the base so the anchor bolts are aligned in the middle of the holes in the base. Disconnect the coupling halves and do not reconnect until all alignment operations are complete.

Set the base on metal shims or metal wedges placed directly under the part of the base carrying the greatest weight, and spaced close enough to give uniform support and stability.

Adjust the metal shims or wedges until the shaft of the pump and driver are level or vertical as appropriate and until pump and driver shaft are aligned with each other. Make sure that all shims or wedges fit firmly between the foundation and the base.

If leveling nuts are installed on the anchor bolts and are used for alignment, follow the same procedure as with shims or wedges. Support the base with additional shims or wedges if necessary. Make sure that all nuts and shims are in firm contact with the base. Tighten the foundation bolts snugly, but not too firmly, and recheck the shafts for alignment before grouting.

GROUTING:

IMPORTANT:

The pump base must be set level to avoid any mechanical difficulties with the pump or motor. The 1900 pump was properly aligned, if supplied with a motor, at the factory. However, since the pump base is flexible, it may spring and twist during shipment. Do not pipe the pump until it is realigned.

Grouting the base plate prevents lateral movement of the base plate, and improves the vibration absorbing characteristics of the foundation by increasing its mass. A wooden dam should be

Figure 1. Grouting the Base for Frame Mounted Pumps.

constructed around the base plate to contain the grout while it is being poured. The dam can be built tight against the base plate, or slightly removed from it as desired. Refer to Fig. 1. The entire base plate should be completely filled with nonshrinkable type grout. Be sure to remove all air bubbles from the grout.

CAUTION:

Damaging vibration may result if the base plate is not solidly in contact with the grout bed.

Do not fill the pipe sleeves with grout.

If leveling nuts are used, make sure they are not embedded in grout. Provide access in the grout to the leveling nuts so that they can be backed off after the grout has cured.

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Allow the grout to fully cure before backing off the leveling nuts (if used) and firmly tightening the foundation bolts. Then recheck the alignment before connecting the piping as even the highest quality nonshrink grouts contract slightly during drying.

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

PlPING:

IMPORTANT:

All piping connections must be made with the pipe in a free supported state, and without the need to apply vertical or side pressure to obtain alignment of the piping with pump flange.

All piping should be independently supported near the pump so that pipe strain will not be transmitted to the pump casing. The weight of the piping and of the contained liquid must be considered in support design. The suction and discharge piping should be one or two sizes larger than the pump flange sizes, especially where the piping is of considerable length. Any flexible joints installed in the piping must be equipped with tension rods to absorb piping axial thrust.

The suction pipe must be airtight and sloped upward to the pump flange to avoid air pockets which will impair satisfactory pump operation. The discharge pipe should be as direct as possible with a minimum of valves to reduce pipe friction losses.

A check valve and closing valve should be installed in the discharge line and a closing valve in the suction line. The check valve, between the pump and closing valve, protects the pump from water hammer and prevents reverse rotation in the event of power failure. The closing valves are used in priming, starting and when the pump is shut down. The pump must never be throttled by the use of a valve in the suction line.

INITIAL COUPLING ALIGNMENT:

Check safety codes, and always install protective guard or shield as required by the various federal, state and local laws and the regulations concerning OSHA.

The pump and driver were accurately aligned at the factory. However, it is impossible to maintain this alignment during shipping and handling. Therefore it will be necessary for you to realign the pump and driver. Flexible couplings are not universal joints. They should not be used to compensate for misalignment of the pump and motor shafts. Their function is to transmit power from the driver to the pump while compensating for thermal expansion and shaft end movement. The coupling faces should be far enough apart so that they do not make contact when the motor shaft is forced to the limit of the bearing clearance toward the pump shaft.

In order to properly align the coupling, you will need a taper gauge or set of feeler gauges, and a straight edge.

There are two types of misalignment encountered with flexible couplings: angular misalignment, in which the shafts are not parallel, and parallel misalignment where the shafts are parallel but not on the same axis.

To check angular alignment, insert a feeler gauge or taper gauge at any four places 90° apart around the coupling halves. Insert shims under the driver feet until the same reading is obtained at all four check points. The pump and driver will then be in angular alignment.

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1900 Series Horizontal Splitcase Pumps

STRAIGHT EDGE

PARALLEL MISALIGNMENT

ANGULAR MISALIGNMENT

WEDGE OR THICKNESS GAUGE

PERFECT ALIGNMENT

Instruction and Repair Manual

Figure 2. Flexible Coupling Alignment.

To check parallel alignment, a straight edge should be held against the edges of the coupling halves at any four places 90° apart around the coupling. The straight edge should be parallel to the pump and driver shafts at all times. Insert shims until the straight edge lies flat against both coupling halves at all four checkpoints. The pump and driver will then be in proper parallel alignment. Refer to Fig. 2.

For fine alignment, 3500 RPM operation, for all other coupler types.

A dial indicator should be used when greater alignment accuracy is required. Use the following alignment tolerances unless specified otherwise by the coupling manufacturer. On sleeve type couplings make sure there is at least 1/8" end clearance between the sleeve and the two coupling halves.

To check angular misalignments, mount the dial indicator base to the coupling half, and position the dial indicator button on the front or rear face of the opposite coupling half. Set the dial to zero, rotate both coupling halves together, making sure the indicator button always indicates off the same spot. Misalignment values within 0.004 inches TIR per inch of coupler radius is permissible.

To check parallel misalignment, mount the dial indicator base to one coupling half, or shaft and position the dial indicator button on the outside diameter of the opposite coupling half. Set the dial to zero. Rotate both coupling halves together, making sure the indicator button always indicates off the same spot. Misalignment within 0.004 inches TIR is permissible.

PERIODIC CHECK:

Realign the base after piping from time to time while the unit and foundation are new. Coupling misalignment can occur because of shifts in grouting, foundation or because of large objects going through the pump causing shock loading conditions.

Coupling alignment should be checked periodically for changes. Coupling misalignment can lead to or cause bearing failure, coupling failure, shaft breakage, high power consumption, etc.

AUXILIARY PIPING CONNECTIONS:

Install any additional piping connections your pump may require such as water seal piping, stuffing box drain, baseplate drain, and pressure gauges.

For satisfactory pump operation and life, these auxiliary pipe lines must be kept clean.

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NOTE:

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

ROTATION:

Before connecting the motor to the pump, bump start the driver and verify rotation is in the proper direction. The correct pump rotation is indicated by a directional arrow on the pump casing.

OPERATION:

GENERAL:

This section contains general rules for operation. Because variations may exist in a particular installation between the pumps, the drivers and the accessory equipment, specific operating instructions are not within the scope of this manual.

WARNING:

Before starting or operating the pump, read this entire manual and especially comply with the following instructions:

A. Before starting the pump, install guards around all exposed rotating parts.

B. Before starting the pump, rotate the unit or assembly by hand to assure all moving parts are free.

C. Observe all caution or danger tags attached to the equipment.

D. Never run the pump dry as the close running fits within the pump are lubricated by the liquid. Running dry may result

in pump seizure.

E. Before starting the pump, fill the casing and suction line with liquid. The pump may be primed by using a priming system.

F. If excessive vibration or noise occurs during operation, shut the pump down and consult a Fairbanks Nijhuis™

representative.

G. Before starting a packed box pump, adjust the packing so there is sufficient leakage to lubricate the packing and

assure a cool stuffing box. (See maintenance instructions.)

OPERATING AT REDUCED CAPACITY:

In a typical application covering a wide range of flow rates, a variable speed driver is often used to adjust pump capacity, and this is taken into consideration by Fairbanks Nijhuis when selecting the pump and impeller trim. Although these pumps are applicable over a wide range of operating conditions, care should be exercised when doing so, especially when the actual conditions differ from the sold-for conditions. You should always contact your nearest Fairbanks Nijhuis distributor or factory before operating the pumps at any condition other than that for which they were sold.

Generally, these pumps can be operated continuously at a capacity equal to 25% of the pump capacity at the best efficiency point, and at higher capacities. At capacities less than 25% of best efficiency point capacity, we recommend that the pumps be operated for intermittent periods of time only.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

PRIMING:

The priming procedure is different for positive and negative suction head systems and the following procedures should be followed:

A. Positive suction head.

1. Open the vent on the highest point on the pump casing.

2. Open all suction valves.

3. Allow the liquid to flow from the vent hole until all air bubbles are vented, and then close the vent.

4. The pump is now primed.

B. Negative suction head.

1. Install the priming system on the vent on the highest point of the pump casing.

2. Close the discharge valve.

3. Open the suction valve.

4. Start the priming system.

5. Run the priming system until a continuous stream flows through the suction line, then close the valve to

the vent.

6. The pump is now primed.

STARTING THE PUMP:

A. After the pump is primed, and with the discharge valve closed and the suction valve open, start the driver according

to the driver manufacturer’s instructions.

B. Open the discharge valve slowly to prevent water hammer.

C. Immediately after the pump has been started, check bearing temperature, stuffing box lubrication and operation,

and pump noise level. Continue to monitor these values for the first several hours of operation.

NORMAL OPERATION:

Monitor the following during running cycles:

A. Unit vibration or noise.

B. Driver lubrication.

C. Pump lubrication.

D. Packing box leakage.

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Check the following before normal start-up:

A. Driver lubrication.

B. General condition of all equipment.

Start-up after a week or more downtime:

A. Repeat those procedures covered by initial start-up.

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

STOPPING THE PUMP:

Pump stations are usually designed to have the pumps started and stopped automatically using a controller. Since this is a function of station design, the operators should be thoroughly familiar with the system’s operating parameters and in the use of the controller. The general procedure to shut down the pump is as follows:

NORMAL SHUTDOWN:

A. Disconnect the electrical power.

1. Lock out the power to the driver.

DANGER:

Check power source with appropriate electrical test equipment to ensure driver cannot accidently start.

B. If the pump is to be removed for repair, close the suction and discharge valves.

EMERGENCY SHUTDOWN:

In the event of an emergency, shut off the power at the nearest switch. The operator or persons working around the equipment should be familiar with locations of emergency shut-off points.

Many installations are equipped with emergency shut-off switches near the pump location. These locations should be plainly marked and be readily accessible at all times.

The control panel (if used) may be equipped with an emergency stop button or switch.

BEARING OPERATING TEMPERATURE:

These pumps are designed to operate over a wide ambient temperature. The temperature, when measured on the outside surface of the bearing housing, should not exceed 190°F. Temperatures in excess of 190°F may indicate a lack of lubricant, or bearing problems. If the temperature exceeds this limit, the pump should be stopped and the cause investigated and corrected.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

TROUBLESHOOTING:

PUMP:

Your Fairbanks Nijhuis™ pump has been engineered and carefully selected for your application. It should provide years of trouble-free service. However, any piece of machinery is subject to wear and occasional malfunction.

To help you quickly isolate and rectify any malfunction, the following troubleshooting guide has been prepared.

Frequent use of the chart to determine the cause of minor operating problems may prevent a major problem or possible breakdown of your pump.

TROUBLE PROBABLE CAUSE REMEDY

1. Pump fails to prime or loses its prime.

2. No discharge from pump. a. Pump is not properly primed. a. Reprime the pump; refer to priming

a. Air leaks in suction lines. a. Clean and tighten all suction

prime connections; relocate suction inlet in liquid source.

b. Suction strainer is clogged. b. Remove dirt, leaves, or other

material from the strainer.

c. Suction lift is too high. c. Re-evaluate pump requirements

and correct suction conditions.

d. Defective priming valve. d. Replace valve.

e. Defective packing or seal. e. Replace packing or seal.

troubles and remedies.

b. Total head is too high. b. Re-evaluate head calculations;

measure elevation differences between pump and liquid source and pump discharge point. Consult your local Fairbanks Nijhuis sales office.

c. Driver is not operating at rated

speed.

d. Impeller or discharge line is

clogged.

c. Check voltage of electric motor;

check steam pressure of steam turbine; check engine RPM’s. Refer to appropriate maintenance manuals for possible troubles and corrective action.

d. Back flush pump to clear

obstruction; disassemble pump and/or piping and remove obstruction.

11/12/18

e. Wrong direction of rotation. e. Check wiring against diagram

motor nameplate and in controller; reverse any two power leads on a three phase motor, replace a single phase motor.

f. Pump is vapor bound. f. Provide additional pressure on

liquid being pumped by elevating liquid source or pressurizing the supply tank.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

TROUBLE PROBABLE CAUSE REMEDY

3. Pump does not deliver rated capacity.

a. Pump is not properly primed. a. See 2a above. b. Suction lift is too high. b. See 1c above. c. Excessive air in liquid. c. See 1a above. d. Air leakage through stuffing box. d. See 1e above. e. Driver is not operating at rated speed. e. See 2c above. f. Impeller is clogged. f. See 2d above. g. Wearing rings are worn. g. Replace wearing rings. h. Impeller is damaged. h. Replace impeller. i. Pump is vapor bound. i. See 2f above.

4. Insufficient pressure. a. Excessive air in liquid. a. See 3c above.

b. Driver is not operating at rated speed. b. See 2c above. c. Wrong direction of rotation. c. See 2e above. d. Total head is too high. d. See 2b above. e. Wearing rings are worn. e. See 3g above. f. Impeller is damaged. f. See 3h above. g. Casing gasket defective allowing

g. Replace casing gasket.

internal leakage.

h. Liquid is vaporizing. h. See 2f above.

5. Pump starts then stops pumping. a. Air leaks in suction line. a. See 1a above.

b. Air pockets in suction line. b. Reprime the pump; eliminate air

pockets.

c. Water seal line is plugged. c. Remove obstruction from water

line. d. Excessive air in liquid. d. See 1a above. e. Suction lift too high. e. See 1c above. f. Defective packing or seal. f. See 1e above. g. Pump is vapor bound. g. See 2f above.

6. Excessive power consumption. a. Speed is too high. a. Internal electric motor wiring is incorrect; replace motor; refer to applicable driver maintenance manuals for possible troubles and corrective action.

b. Wrong direction of rotation. b. See 2e above. c. Total head is too high. c. See 2b above. d. Total head is too low. d. Re-evaluate head conditions;

correct as required. Consult your local Fairbanks Nijhuis™ sales office.

e. Impeller is clogged. e. See 2d above. f. Impeller is binding. f. Relieve strain on casing; adjust

impeller clearance.

g. Motor shaft is bent or worn. g. Replace motor shaft. h. Drive and pump are misaligned. h. Realign driver with pump. i. Power frame shaft is bent or worn. i. Replace shaft. j. Wearing rings are worn. j. See 3g above. k. Packing is incorrectly installed. k. Install packing correctly.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

TROUBLE PROBABLE CAUSE REMEDY

7. Pump is noisy or has excessive vibration.

a. Magnetic hum. a. Consult motor manufacturer.

b. Motor bearings are worn. b. Replace bearings.

c. Foreign material in impeller. c. Remove foreign material.

d. Impeller is binding. d. See 6f above.

e. Motor shaft is bent or worn. e. See 6g above.

f. Drive and pump are misaligned. f. See 6h above.

g. Power frame shaft is bent. g. See 6i above.

h. Foundation is not rigid. h. Strengthen foundation; change

method of mounting pump unit.

i. Worn bearing in power frame. i. Replace bearing.

j. Impeller is damaged. j. See 3h above.

k. Lack of lubrication in power frame. k. Lubricate power frame bearing;

replace bearings if damaged.

l. Pump is not properly leveled. l. Check levelness of pump.

m. Piping is not supported. m. Provide support for suction and

discharge piping.

n. Pump is cavitating. n. Re-evaluate pump application;

consult local Fairbanks Nijhuis™ sales office.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

MOTOR:

The trouble or symptoms, their probable causes and the suggested remedies contained in this troubleshooting guide will assist you in quickly determining and correcting most problems should they occur. It is not the intention of Fairbanks Nijhuis™ to replace the recommendations of the motor manufacturer in regard to operation and maintenance. Rather, this guide is offered as a supplement to such data. Any specific questions or problems should be directed to the manufacturer of the motor. Be sure to supply the relevant data from the motor nameplate when inquiring about motor service or maintenance.

DANGER:

Electrical troubleshooting should be performed by qualified electricians skilled in the use of electrical instruments.

Electrical power should be disconnected and locked to prevent the motor from accidentally starting during mechanical systems check.

TROUBLE PROBABLE CAUSE REMEDY

1. Motor does not start. a. Break in power supply circuit. a. Close break in circuit.

1. Blown or defective primary fuses or open circuit breakers.

2. Blown or defective secondary fuses or opened circuit breakers.

b. Open control circuit. b. Complete control circuit.

1. Overload trips are open. 1. Push reset button.

2. Defective holding coil in magnetic switch.

3. Loose or poor connections in control circuit.

c. Magnetic switch closes. c. Check switch operation.

1. Poor switch contact. 1. Open manual disconnect switch,

1. Check voltage across all phases above the disconnect switch. Replace fuses or reset circuit breakers as necessary.

2. Check voltage across all phases below disconnect switch (with disconnect switch closed). Replace fuses or reset circuit breakers as necessary.

2. Push start button and allow sufficient time for operation of time delay, if used, then check voltage across magnetic holding coil. If voltage is measured, coil is defective. If no voltage is measured, control circuit is open.

3. Make visual inspection of all connections and retighten as necessary.

close magnetic switch by hand and examine contactors and springs.

2. Open circuit in control panel. 2. Check voltage at TI-TI-T3.

3. Open circuits in leads to motor. 3. Check voltage at leads to outlet box.

4. Leads improperly connected. 4. Check lead numbers and connections.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

TROUBLE PROBABLE CAUSE REMEDY

2. Motor fails to come up to speed. a. Low or incorrect voltage. a. Check voltage at Tl-T2-T3 in control panel.

b. Incorrect connections at motor. b. Check for proper lead

connections at motor, compare with connection diagram on motor.

c. Overload–mechanical. c. Check impeller setting. Check

for tight or locked shaft.

d. Overload–hydraulic. d. Check impeller setting. Check GPM

against pump capacity and head.

4. Motor vibrates. a. Inadequate ventilation. a. Assure adequate supply of fresh air. Check air blast through motor by feeling air discharge at bottom of motor.

b. Overload. b. Check load with ammeter.

c. Unbalanced supply voltage. c. Check supply voltage with volt

meter.

a. Headshaft misaligned. a. Remove top drive coupling and

check alignment of motor to pump.

b. Worn shaft bearings or bent shaft. b. Disconnect motor from pump

and run motor only to determine source of vibration.

c. Hydraulic disturbance in discharge

piping.

c. Check isolation joint in discharge

piping near pump head.

d. Unbalanced rotor assembly. d. Balance rotor.

e. Motor not mounted securely. e. Secure properly and check

alignment.

5. Motor noisy. a. Worn thrust bearing. a. Remove dust cover, rotate rotor by hand and make visual inspection of balls and races. (Bearing noise is usually accompanied by high frequency vibration.)

b. Electrical noise. b. Most electrical motors are noisy

during the starting period. The noise should diminish as the motor reaches full speed.

6. Incorrect rotation. a. Incorrect connections. a. Refer to connection diagram and reconnect according to instructions.

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

REPAIR:

NOTE:

This repair manual is applicable to pump Models 1920, 1920F, 1910 and 1940. All photos illustrate Model 1910 except where noted.

SERVICE:

Your Fairbanks Nijhuis™ pump requires no maintenance other than periodic inspection, lubrication and occasional cleaning. The intent of inspection is to prevent breakdown, thus obtaining optimum service life.

LUBRICATION OF BEARINGS:

Regreasable bearings will require periodic lubrication and this can be accomplished by using the zerk or lubrication fitting at each bearing. Lubricate the bearings at regular intervals using high quality grease. The initial bearing lubrication at Aurora is Chevron SRI Grease NLGI 2 (polyurea thickener) (Pentair Part Number 384-0002-639). Before lubricating the bearings, thoroughly flushing the old grease with the new grease is required. We recommend Chevron SRI Grease NLGI 2 (polyurea thickener) for follow-up relubrication after the flushing. Most major brands of Grade No. 2 ball bearing grease are satisfactory for pump operation in both wet and dry applications.

CAUTION:

Be aware that mixing of different brands or blends of grease should be avoided due to possible incompatibilities that could damage the bearings. A thorough flushing of the old grease with the new grease is required to minimize this potential incompatibility. Avoid using the following: (1) grease of vegetable or animal base that can develop acids or (2) grease containing rosin, graphite, talc or other impurities. Under no circumstances should grease be reused.

CAUTION:

Over lubrication should be avoided as it may result in overheating and possible bearing failure. Under normal application, adequate lubrication is assured if the amount of grease is maintained at 1/3 to 1/2 the capacity of the bearing and adjacent space surrounding the bearing. In dry locations, each bearing will need lubrication at least every 4,000 hours of running time or every 6 to 12 months, whichever is more frequent. In wet locations the bearings will need lubrication at least after every 2,000 hours of running time or every 4 to 6 months, whichever is more frequent. A unit is considered to be installed in a wet location if the pump and motor are exposed to dripping water, to the weather, or to heavy condensation such as found in unheated and poorly ventilated underground locations.

At times it may be necessary to clean the bearings due to accumulated dirt or deteriorated lubricants. This can be accomplished by flushing the bearing with a light oil heated to 180 to 200°F while rotating it on a spindle. Wipe the bearing housing with a clean rag soaked in a cleaning solvent and flush all surfaces.

Model 1940

Dry bearing thoroughly before relubricating. Compressed air can be used to speed drying, but care should be taken not to let bearings rotate while being dried.

Model 1910

CAUTION:

Use normal fire caution procedures when using any petroleum cleaner.

Model 1920 pumps are available with two options for lubricating the shaft bearings. They are:

1. Regreasable (standard)

2. Oil lubrication

Models 1920

and 1920F

A. Complete pump assemblies.

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

Oil lubricated bearings are optional on Model 1920 pumps. A fixed oil level is maintained within the bearing cartridge by an oiler which allows visual indications of reserve oil.

At initial installation and before starting a unit that has been shut down for repairs or for any extended length of time, run enough lOW-30 weight motor oil through the oiler to maintain a constant oil level to ensure that the bearing will never be without an oil supply. Oil will have to be added at intervals to maintain a constant level in the oiler. This interval can be determined only by experience.

Under working conditions, oil will break down and need to be replaced at regular intervals. The length of these intervals will depend on many factors. Under normal operation, in clean and dry locations, the oil should be changed about once a year. However, when the pump is exposed to dirt contamination, high temperatures (200°F or above) or a wet location, the oil may have to be changed every 2 or 3 months.

The motor that drives your Fairbanks Nijhuis™ pump may or may not require lubrication. Consult the manufacturer’s recommendations for proper maintenance instructions.

REPAIRS:

The pump may be disassembled using the illustrations and text provided. Although complete disassembly is covered, it will seldom be necessary to completely disassemble your Fairbanks Nijhuis pump.

The illustrations accompanying the disassembly instructions show the pump at various stages of disassembly. The illustrations are intended to aid in the correct identification of the parts mentioned in the text.

Inspect removed parts at disassembly to determine their reusability. Cracked castings should never be reused. All packing and gaskets should be replaced with new ones at reassembly simply as a matter of economy; they are much less expensive to replace routinely than to replace as the need occurs. In general it is economical to return to the manufacturer for repair only the motor and motor controller.

B. Pump positioned horizontally for disassembly. Pump base removed. Model 1910 or 1940 illustrated.

C. Upper casing, bearing caps and packing removed. Model 1910 or 1940 illustrated.

DISASSEMBLY OF THE PUMP:

Disassemble only what is needed to make repairs or accomplish inspection. Proceed to disassemble the pump as follows: (See Figure 6 for Models 1920 and 1920F, Figure 7 for Model 1910 and Figure 8 for Model 1940.)

1. Break electrical connection to motor or take similar steps to make certain that drive unit will not be unintentionally energized during disassembly.

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Page 24

2. Close such valves or flow-control devices necessary to make certain that flow of liquid will not take place during disassembly.

NOTE:

Discharge and suction piping need not be disturbed unless complete pump assembly is to be removed.

3. Drain liquid from pump by removing plugs (3B and 3A). Disconnect bypass lines if applicable.

4. Loosen and remove capscrews (2A) securing casing half (3) to remainder of pump assembly.

NOTE: If pump being disassembled is 3" 1913A, 3" 1923A, 3" 1843A or larger, remove capscrews (2B) before attempting to separate the casing halves.

5. Make certain that all securing capscrews are removed, then carefully remove casing half (3) using hoist or crane

with sling attached to cast hooks.

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

CAUTION:

Use extreme care when casing comes loose that it does not drop out of sling as this would cause extensive damage to other components of pump.

6. Remove gasket (157) and scrape mating surfaces of casing halves to remove pieces of gasket which may have

adhered in separation. Take care not to scratch or mar mating surfaces.

7. For Model 1920, 1920F and 1940 pumps, loosen setscrews in flexible coupling and slide halves apart. For Model 1910

remove flexible shafting from pump.

8. Remove capscrews (6A) securing bearing caps (6). Lift off bearing caps (6) and pins (158A). Mark caps to ensure

correct replacement and orientation on the respective bearing arms.

9. Loosen and remove nuts (19A), washers (19B), and clamps (19C), securing split halves of packing glands (19). Remove

swing bolts (19D).

10. Assuming that further work is required on shaft and impeller assembly, use properly secured rope slings and hoist

or crane as required to lift it from casing half (2) and place it on suitable bench or work surface.

CAUTION:

Take care not to dent or damage impeller and/or other parts. Use of a supporting cradle or work stand is recommended.

NOTE: Disassembly procedure from this point covers pumps having standard packing. If pump has mechanical seals, refer to Specific Instructions.

11. Remove and discard rings of packing (212), since replacement with new packing is recommended whenever pump is

disassembled.

12. Slide pump half of flexible coupling off shaft (4) and remove key (272). Pry up on end of key so as not to damage

shaft. If preferred, key may be removed by carefully tapping from outer end with a brass drift or similar nonmarring tool, using a small hammer.

13. Remove casing wearing rings (16).

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

14. If pump is grease lubricated remove zerks (164) and pipe plugs (168A) from cartridge caps (A159 and B159). If pump has oil lubrication option, Model 1920 only, remove breather cap from top of cartridge caps and remove close nipples from bottom of cartridge caps. The remaining oil cup, street elbows, and nipples are loose at this point and can be removed as an assembly.

15. For Model 1910 and 1940 pumps, loosen and remove capscrews (159F) from cartridge cap (A159). Outboard shaft end protector (118) may be removed from its recess in the outboard cartridge cap at this time if necessary. Remove retainer (161) with truarc pliers. Remove gasket (159B).

NOTE: For Model 1920 pumps, if unit has tandem shaft, protector (118) is not used. Remove slinger and capscrews (159F). Slide cartridge cap (A159) and grease seal off shaft. Press grease seal out of cartridge cap if it is necessary to replace this seal. Remove retainer ring (161) with truarc pliers. Remove gasket (159B).

16. Outboard bearing (168) is press fitted onto shaft (4). To remove it, place a puller on bearing cartridge (A158) and pull

cartridge, grease seal (159A), and bearing from shaft. The grease seal can be pressed from the bearing cartridge if it needs replacing. Slide slinger (A126), lantern ring (10), and bushing (20) off shaft (4).

17. Removal of the inboard bearing is basically the same as the outboard bearing. Remove capscrews (159G) and slide

slingers (B126), cartridge cap (B159), grease seal (159C), and gasket (159E) off shaft.

18. Pull or press off bearing cartridge (B158), grease seal (159D), and bearing (163). Remove slinger (C126), lantern ring

(10), and bushing (20) from shaft.

19. If unit has right-hand rotation, unscrew and remove outboard sleeve (A14) first. Remove O-ring (14A). If unit has left-

hand rotation, unscrew and remove inboard sleeve (B14). Remove O-ring (14B).

20. On right-hand unit, balance of the parts will be removed as follows: Pull or tap impeller (B1) off shaft (4) using care

not to damage impeller. Remove gasket (39A). Slide casing bushing (39) off separator sleeve (48). Pull separator sleeve, gasket (39B), and impeller (A1) off shaft. Remove gasket (14B) and key (102). Unscrew and remove shaft sleeve (B14). Left-hand unit disassembly will begin with impeller (A1) and end with sleeve (14A).

21. Disassemble wearing ring(s) (17) (optional) from impeller(s) (B1) and (A1) only if necessary. For pumps on power

frame 5, remove setscrews (16A). Apply a puller and gradually withdraw wearing rings (17) from impellers (B1 and A1). Wearing rings may have to be cut or trimmed off the impeller. If a lathe is used to trim rings off, use care not to clamp impeller too tight and cause distortion. Also use care not to remove any metal from impeller.

22. Remove locking and locating pins (39C, 17A, 2C, and 19F) from lower casing half (2) only if replacement is necessary.

23. Nameplate and its securing screws (not pictured) should be removed only if replacement is necessary.

24. On Model 1940 pumps unscrew capscrews (74B) to remove

motor and motor bracket (74) from casing half (2). It is best to leave motor bracket on motor as it helps

protect motor shaft from possible damage. Remove nuts

(77C) from capscrews (74A) which allows motor to be separated from motor bracket.

DISASSEMBLY OF PUMPS WITH MECHANICAL SEALS:

FLEXIBLE CUP

STATIONARY SEAT

Figure 3. Mechanical Seal

WASHER

DRIVE RING

RETAINER

FLEXIBLE BELLOWS

SPRING

1. Perform disassembly procedures as previously given through step 8.

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Page 26

2. Loosen and remove nuts (19A) and washers (19B), thus freeing swing bolts (19D) to allow shaft and impeller assembly to be lifted from casing half (2) with sling and hoist or crane as described in step 10 above.

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

CAUTION:

Use extreme care in moving assembly. Ceramic seats can be cracked by just sliding loose on shaft. To prevent this, wrap seal securely in a shop cloth or other protective covering.

3. With shaft and impeller assembly on a suitable bench, cradle, or work stand, loosen and remove pipe plug (168A) from inboard cartridge cap (B159). Remove grease zerk (164) and capscrews (159G) and slide the cartridge cap with grease seal (159C) off end of shaft (4). Remove gasket (159E).

4. Pull or press bearing cartridge (B158), grease seal (159D), and bearing (163) off shaft. Remove slinger (C126).

5. One piece gland (31) used with mechanical seal assembly can now be removed from shaft. O-ring (31A) can be removed from seal gland if desired.

CAUTION:

Exercise great care in removing seal assembly (456) to keep from marring or otherwise damaging precision ground mating surfaces.

6. Scribe a mark on shaft sleeves for relocating seal collar on reassembly. Loosen setscrews (456C), securing seal collars (456B) to shaft sleeves and slide them off.

7. Proceed with further disassembly of outboard ball bearing and seal assembly using same basic procedure.

8. After removal of mechanical seals proceed with balance of disassembly in same manner as described for packing design.

D. Rotating element removed from lower casing.

REASSEMBLY:

Reassembly will generally be in reverse order of disassembly. If disassembly was not complete, use only those steps related to your particular repair program.

1. Position locating pins (2C) in casing half (2), adding swing bolt pins (19F) if used on your pump. Install wearing ring pins (17A) and casing bushing pins (39C). Tap pins gently to seat them in place. Place O-ring (14B) in shaft sleeve (B14). If nameplate was removed, install it with screws.

2. On right-hand unit, thread inboard sleeve (B14) onto shaft (4) distance “A”. (Refer to Fig. 4.) On left-hand unit, thread outboard sleeve (A14) onto shaft distance “A”. (Refer to Fig.

5.) When sleeve is in position, its keyway should align with keyway on shaft. Coat key and keyway with Loctite® sealant grade 242. Insert key (102) into keyways

of shaft and sleeve. Tap key firmly in place.

E. Rotating element placed in a protective cradle for further disassembly.

3. Coat inside diameter of impeller wearing rings (17) (optional) with Loctite® sealant Grade 271 and press them over hubs of impeller(s) (B1) and (A1). Do not attempt to hammer impeller wear rings into position, since they are a press fit. Use of an arbor press is preferred. However, placing a block of wood over the impeller wearing ring and pressing it in will work satisfactorily. For pumps on power frame 5 only, four setscrews (16A) will be installed by drilling into

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1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

wearing rings and impeller. The opposite surface of the impeller should be protected from damage throughout the procedures by resting it against soft wood on the surface of work bench.

CAUTION:

Impeller wearing rings must be given special care because they are press fit. Be sure rings are positioned squarely over hubs of impeller. A soft headed hammer may be used to gently tap impeller wearing rings into correct alignment before they are pressed into place.

F. Bearing cartridge cap and gasket removed from shaft.

4. On right-hand unit proceed to assemble the rotating element as follows:

Coat impeller (B1) keyway with Loctite® sealant grade 242 and slide impeller (A1) onto shaft (4).

Place gasket (39B) on shaft and slide separate sleeve (48) against it. Place casing bushings (39) over separator

sleeve. Place gasket (39A) on shaft, coat impeller (B1) keyway with Loctite® sealant grade 242 and slide impeller (B1) in place. Key (102) should not protrude beyond impeller (B1) hub after impeller has been positioned. Place O-ring (14A) in shaft sleeve (A14), then thread shaft sleeve tight onto shaft (4).

On left-hand unit use same procedure, only starting with impeller (B1).

NOTE: When assembling rotating element of a 1900 Series pump it is important that the curve of impeller blades is in agreement with pump rotation. (See insert in Figures 6, 7, or 8.)

CAUTION:

Carefully check to see that the proper shaft sleeve has been keyed into place for rotation of pump. If the correct shaft sleeve is not keyed onto shaft, it can spin loose during operation of pump and cause extensive damage.

5. Install packing or mechanical seals and secure according to the following specific instructions:

STANDARD PACKING:

a. Slide bushings (20) onto each end of shaft. The raised shoulder on bushings must face away from impeller.

b. Seven pieces of packing (212) are placed on outboard end of shaft (4) over shaft sleeve. Two pieces of packing,

a lantern ring (10), and three more pieces of packing are placed on inboard shaft sleeve.

Stagger breaks in packing rings so that pump will not leak

excessively.

MECHANICAL SEAL:

a. Single seal and balanced single seals.

I. Slide one seal lock collar (456B) with setscrews (456C)

facing the impeller onto each end of the shaft. Position on scribe mark made during disassembly and lock in place.

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G. Inboard and outboard bearings and bearing cartridges removed.

Page 28

Figure 4.

1900 Series Horizontal Splitcase Pumps

MODELS 1920, 1920F, 1910 AND 1940

Power Series Pump Size A

2 2" 1913A, 2" 1923A, 2" 1943A

2" 1913B, 2" 1923B, 2" 1943B

2-1/2" 1912A, 2-1/2" 1922A, 2-1/2" 1942A

3 3" 1913A, 3" 1923A, 3" 1843A

3" 1913B, 3" 1923B, 3" 1843B

4" 1922

4 5" 1922 17-9/64

4A 5" 1924 15-63/64

5 6" 1922A, 6" 1922B, 6" 1923, 6" 1923B 18-41/64

5A 6" 1924 17

12-49/64

15-29/64

Instruction and Repair Manual

Power Series Pump Size A

2 2" 1913A, 2" 1923A, 2" 1943A

3 3" 1913A, 3" 1923A, 3" 1843A

4 5" 1922 8-49/64

4A 5" 1924 9-63/64

5 6" 1922A, 6" 1922B, , 6" 1923, 6" 1923B 9-49/64

Figure 5.

5A 6" 1924 11

2" 1913B, 2" 1923B, 2" 1943B

6-57/64

2-1/2" 1912A, 2-1/2" 1922A, 2-1/2" 1942A

7-53/64

3" 1913B, 3" 1923B, 3" 1843B

4" 1922

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1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

II. Put a light coat of liquid dishwashing detergent on shaft sleeve. Check rotating parts of seal to make sure they

are clean. Spread a light coat of liquid detergent on inside diameters of flexible bellows and washer.

III. Place the seal’s spring, drive ring, retainer, flexible bellows, and washer on shaft sleeve in respective order.

(Refer to Fig. 3.)

IV. Thoroughly inspect cavity of seal gland (31) for burrs or nicks which could damage the seat of seal. Apply a film of

liquid detergent to seal seat and install it in the seal gland cavity, taking care to seat it evenly

and squarely.

NOTE: If it is not possible to insert seat with fingers, place a cardboard protecting ring furnished with seal over the lapped face of seat and press into place with a piece of tubing having end cut square. Tubing should be slightly larger than the diameter of shaft. Remove cardboard after seat is firmly in place.

CAUTION:

Never place a mechanical seal into service after it has been used without replacing or relapping stationary seat and

washer faces.

V. Place O-rings (31A) around seal glands and slide seal glands onto ends of shaft.

b. Double Seal

I. Place one seal seat in collar (456B). The other fits into seal gland (31). These parts are set into their cavities in the same manner as they are with a single seal.

II. Place O-rings (456A) around collars (456B) and put the

collars with stationary seats facing away from impeller on ends of shaft. Slide flexible bellows, washers, and springs on shaft in the order shown in Figure 3, for

each half of double seal assembly (456).

H. Shaft sleeve and outboard impeller removed from shaft.

III. Place O-rings (31A) around the seal glands (31) and slide seal glands onto ends of the shaft with stationary seats facing impeller.

6. Place slinger (A126) onto outboard end of shaft (4).

7. Press grease seal (159A) into bearing cartridge (A158). Place outboard double row ball bearing (168) in bearing

cartridge and press parts onto outboard end shaft. Snap retainer ring (161) in place to secure outboard bearing. Place gasket (159B) and cartridge cap (A159) in position and secure it with capscrews (159F).

NOTE: Both grease zerk holes in bearing cartridges and pipe plug holes in cartridge caps must be facing in opposite directions when assembled.

8. Protector (118) can be placed in cartridge cap or if unit has tandem shaft press a grease seal into cartridge cap and slide

a slinger onto shaft.

9. Place slinger (C126) in inboard end of shaft.

10. Press grease seal (159D) into bearing cartridge (B158). Place

inboard ball bearing (163) in bearing cartridge and press this assembly onto inboard end of shaft.

11/12/18

I. Casing bushing removed from impeller separator sleeve.

Page 30

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

11. Press grease seal (159C) into cartridge cap (B159). Position gasket (159E) and cartridge cap against bearing cartridge and secure it in place with capscrews (159G). Be sure to align grease zerk holes and pipe plug hole on opposite sides.

12. Place slinger (B126) onto shaft. Place grease zerks (164) in bearing cartridges and pipe plugs (168A) in bearing caps. If pump is oil lubricated, Model 1920 only, breather tubes are placed in each bearing cartridge. Oilers with nipples and elbows are placed in cartridge caps.

13. Slide casing wearing rings (16) over impeller hub or optional wearing rings (17) and set rotating element into casing half (2). Make certain that drill holes in bottom surface of casing wearing rings are located over pins (17A). The drill hole in casing bushing (39) is over pin (39C) previously set in casing half (2).

NOTE:

Grease zerks or breather tubes should face up.

14. Install key (272) in motor end of shaft (4). Check

positioning and alignment of packing rings or seal

components, install swing bolts (19D) and split gland halves (19) if pump has packing. Position clamps (19C), washers (19B), and nuts (19A), securing loosely in place. Swing bolts (19D) are set over pins (19F) on 3" 1913A, 3" 1923A, 3" 1843A or smaller units. On larger units, swing bolts are held in place by capscrews (2B) after casing half (3) is in position.

15. Place pins (158A) into bearing cartridges. Place bearing caps (6) in position and secure with capscrews (6A).

J. Impeller separator sleeve removed from shaft.

16. Position new casing gaskets (157) on casing half (2). Set casing half (3) in place. Secure it to casing half (2) with capscrews (2A). Pins (2C) are used as a means of locating the position of casing halves.

17. On pumps larger than 3" 1913A, 3" 1923A, 3" 1843A thread in capscrews (2B) making sure they are placed through eye of swing bolts (19D).

18. Place drain plugs (3B) and (3A) back in casing halves.

19. On Model 1940 pumps, set the motor on motor bracket (74) and fasten them together with capscrews (74A) and nuts (77C). Slide flexible coupling half onto pump and motor shafts. Attach motor bracket to casing half (2) with capscrews (74B). Connect flexible coupling halves.

20. If the casing half (2) was removed from base, see section on installation for proper methods of realigning pump to motor and piping. On Model 1910 pumps see this section for realigning pump to flexible shafting. Attach flexible shafting to pump. Ideal joint operating angle is 1° to 5°.

21. Replace any flushing or cooling lines that were removed. Connect electricity back to motor.

11/12/18

Page 31

1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

STARTING PUMP AFTER REASSEMBLY:

Do not start pump until all air and vapor have been bled. Make sure that there is liquid in the pump to provide necessary lubrication.

NOTE:

Do not overtighten standard packing assembly before returning unit to operation.

CAUTION:

Read operating instructions carefully before starting pump. Jog pump to check for proper rotation. Allow it to run a short time. Gradually tighten nuts (19A) until dripping has been reduced to its normal level.

Overtightening the packing will cause stuffing box to overheat. The shaft sleeve will also receive excessive wear.

K. Inboard impeller removed. Shaft sleeve in place.

RECOMMENDED SPARES:

Associated Kits

Rotating

Reference

Number Description

*A1 Impeller, 1st Stage x x

*B1 Impeller, 2nd Stage x x

*4 Pump Shaft x x

10 Water Seal Ring, Set x x x x

14 Shaft Sleeve, Set x x x

16 Wear Ring, Casing, Set x x

17 Wear Ring, Impeller, Set x

126 Deflector, Set x x x x

163 Bearing, Radial x x x x

168 Bearing, Thrust x x x x

212 Packing Set x x x x

456 Mechanical Seal, Set x x x x

*Recommended for severe duty applications.

Table 1

NOTE: WHEN ORDERING SPARE PARTS ALWAYS INCLUDE THE PUMP TYPE, SIZE, SERIAL NUMBER, AND THE PIECE NUMBER FROM THE EXPLODED VIEW IN THIS MANUAL. ORDER ALL PARTS FROM YOUR LOCAL AUTHORIZED DISTRIBUTOR, OR THE FACTORY AT NORTH AURORA, ILLINOIS.

Gaskets, Set x x x x

Seal

Kit

Overhaul

Seal Kit

Rotating

Kit*

with

Impeller

Rings*

PREDICTED LIFE:

Reference

Number Description

1 Impeller 10 years

2 Casing, Lower 20 years

3 Casing, Upper 20 years

14 Shaft Sleeve 5 years

16 Wear Ring, Casing 5 years

17 Wear Ring, Impeller 5 years

163 Bearing, Radial 100,000 hours

168 Bearing, Thrust 100,000 hours

212 Packing 1 year

456 Mechanical Seal 5 years

Table 2

Predicted

Life

11/12/18

Page 32

PARTS LIST:

Ref. No. Description

A1 Impeller, 1st Stage

B1 Impeller, 2nd Stage

2 Casing, Lower Half

3 Casing, Upper Half

4 Pump Shaft

6 Cap, Bearing Housing

10 Lantern Ring

A14 Shaft Sleeve

B14 Shaft Sleeve

14A O-Ring, Sleeve

14B O-Ring, Sleeve

15 Pump Base

16 Wear Ring, Casing

17 Wear Ring, Impeller

15 Pump Base

19A Gland Nut

19B Gland Washer

19C Gland Clamp

19D Gland Swing Bolt

20 Stuffing Box Bushing

39 Interstage Bushing

39A Gasket, Interstage Bushing

39B Gasket, Interstage Bushing

48 Sleeve, Interstage Bushing

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

Ref. No. Description

74 Bracket

102 Key, Impeller

118 End Cap, Bearing Housing

A126 Slinger

B126 Slinger

C126 Slinger

157 Gasket, Casing

A158 Housing, Thrust Bearing

B158 Housing, Radial Bearing

A159 Cover, Thrust Bearing Housing Outer

B159 Cover, Radial Bearing Housing Outer

159A Lip Seal

159B Gasket, Thrust Bearing Housing Cover

159C Grease Seal

159D Grease Seal

159E Gasket, Radial Bearing Housing Cover

161 Retaining Ring, Bearing

163 Bearing, Radial

164 Grease Fitting

168 Bearing, Thrust

212 Packing

272 Key, Coupling

456 Mechanical Seal

Table 3

MISCELLANEOUS NUMBERED PARTS:

CAPSCREWS FOR:

Ref. No. Description

2A Casing (Parting Flange)

2B Casing (Stuffing Box)

6A Bearing Cap (Number 6)

15A Pump Base

74A Motor Bracket

74B Motor Bracket

159F Bearing Housing Cover (Thrust)

159G Bearing Housing Cover (Radial)

NUT FOR:

Ref. No. Description

77C Motor Bracket

PINS FOR:

Ref. No. Description

2C Casing (Parting Flange)

17A Impeller Wear Rings

19F Gland Swing Bolt

PINS FOR:

Ref. No. Description

39C Interstage Bushing

158A Bearing Cartridges

PIPE PLUGS FOR:

Ref. No. Description

3A Suction and Discharge (Gauges)

3B Bottom of Necks

168A Bearing Cartridges

MECHANICAL SEAL PARTS:

Ref. No. Description

31 Gland, Mechanical Seal

31A O-Ring, Gland, Mechanical Seal

456 Seal, Mechanical Seal

456A O-Ring, Mechanical Seal

456B Collar, Mechanical Seal

456C Setscrew, Mechanical Seal

11/12/18

Page 33

1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

MODELS 1920 AND 1920F

118

159F

A159

168A

161

168

159B

A158

39A

158A

164

19A

39C

(AS VIEWED FROM

INBOARD END).

157

16A

14A

A14

212

A126

159A

19D

19C

19B

39B

16A

17A

102

212

16A

14B

B126

B159

159E

272

164

159D

C126

159C

158A

16A

17A

B14

19F

212

19D

19C

19B

19A

B158

163

168A

159G

MECHANICAL SEAL COMPONENTS

456A

456C

456B

456

31A

Figure 6. 1920 and 1920F Pump Exploded View NOTE: Model 1920F available with packing only.

11/12/18

Page 34

1900 Series Horizontal Splitcase Pumps

Instruction and Repair Manual

MODEL 1910

456A

456C

456B

456

31A

MECHANICAL SEAL COMPONENTS

17A

(AS VIEWED FROM

INBOARD END).

39C

A14

17A

212

19D

19F

19C

19B

19A

A158

A126

159A

164

158A

168 161 159B

A159 168A

118

272

102

14A

159G

159D

39B

19A

19B

39A

C126

19C

19D

212

157

B126

B159

168A 159E

159C

163

B158

158A

164 19

B14

14B

15A

Figure 7. 1910 Pump Exploded View

159F

11/12/18

Page 35

1900 Series Horizontal Splitcase Pumps Instruction and Repair Manual

456A

MODEL 1940

456C

456B

456

31A

MECHANICAL SEAL COMPONENTS

77C

74A

74B

17A

(AS VIEWED FROM

INBOARD END).

39C

A14

212

164

168

A126

159A

A158 158A

161

159B

A159

17A

272

102

19F

19D

19C

19B

19A

14A

159G

39B

19A

159D

19B

39A

19C

19D

212

157

B126

B159 168A

159E 159C

163

B158

158A

164 C126 15

B14

14B

Figure 8. 1940 Pump Exploded View

11/12/18

15A

168A

159F

118

Page 36

STANDARD LIMITED WARRANTY

DELIVERY: Buyer agrees to inspect all deliveries immediately. Any claim for shortages must be made in writing within ten (10) days after Buyer receives a shipment, and if not made, shaIl be deemed waived. Any other claim by Buyer, other than claims under the warranty stated in Paragraph 13, shall be made within thirty (30) days after Buyer receives shipment, and if not made shall be deemed waived. Seller is not responsible for loss or damage in transit after

having received an “In Good Order” receipt from the carrier. Buyer will make all claims for loss or damage in transit against thecarrier.

Buyer is fully responsible for (including payment of the cost of) installation and start-up of all equipment sold under the Order. PATENT INFRINGEMENT: Seller will defend Buyer and the user of the equipment against any claim that any equipment and parts of Seller’s manufacture

furnished under the Order infringe upon any published United States patent, and Seller will pay all damages and costs awarded by a court of competent jurisdiction with respect to such claim. The Buyer or user must promptly notify Seller of any such claim, and cooperate fully with Seller in the defense of such claim, or Seller will have no duty under this paragraph. Buyer will defend and indemnify Seller against patent infringement claims relating to equipment and parts that are not manufactured by Seller to the same extent as Seller agrees to defend and indemnify Buyer with respect to patent infringement claims relating to equipment and parts of Seller's manufacture.

WARRANTY: Seller warrants equipment (and its component parts) of its own manufacture against defects in materials and workmanship under normal use and service for one (1) year from the date of installation or start-up, or for eighteen (18) months after the date of shipment, whichever occurs first. Seller does not warrant accessories or components that are not manufactured by Seller; however, to the extent possible, Seller agrees to assign to Buyer its rights under the original manufacturer’s warranty, without recourse to Seller. Buyer must give Seller notice in writing of any alleged defect covered by this warranty (together with all identifying details, including the serial number, the type of equipment, and the date of purchase) within thirty (30) days of the discovery of such defect during the warranty period. No claim made more than 30 days after the expiration of the warranty period shall be valid.

Guarantees of perforrnance and warranties are based on the use of original equipment manufactured (OEM) replacement parts. Fairbanks Nijhuis™ Pump

Corporation assumes no responsibility or liability if alterations, non-authorized design modifications and/or non-OEM replacement parts areincorporated.

If requested by Seller, any equipment (or its component parts) must be promptly returned to Seller prior to any attempted repair, or sent to an authorized service station designed by Seller, and Buyer shaIl prepay all shipping expenses. Seller shall not be liable for any loss or damage to goods in transit, nor will any warranty claim be valid unless the returned goods are received intact and undamaged as a result of shipment. Repaired or replaced material returned to customer will be shipped F.O.B., Seller’s factory. Seller will not give Buyer credit for parts or equipment returned to Seller, and will not accept delivery of any such parts or equipment, unless Buyer has obtained Seller’s approval in writing.

The warranty extends to repaired or replaced parts of Seller’s manufacturer for ninety (90) days or for the remainder of the original warranty period applicable to the equipment or parts being repaired or replaced. This warranty applies to the repaired or replaced part and is not extended to the product or any other component of the product being repaired.

Repair parts of its own manufacture sold after the original warranty period are warranted for a period of one (1) year from shipment against defects in materials and workmanship under normal use and service. This warranty applies to the replacement part only and is not extended to the product or any other component ofthe product being repaired.

Seller may substitute new equipment or improve part(s) of any equipment judged defective without further liability. All repairs or services performed by Seller, which are not covered by this warranty, will be charged in accordance with Seller’s standard prices then in effect..

THIS WARRANTY IS THE SOLE WARRANTY OF SELLER AND SELLER HEREBY EXPRESSLY DISCLAIMS AND BUYER WAIVES ALL OTHER WARRANTIES EXPRESSED, IMPLIED IN LAW OR IMPLIED IN FACT, INCLUDING ANY WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Seller’s sole obligation under this warranty shall be, at its option, to repair or replace any equipment (or its component parts) that has a defect covered by this warranty, or to refund the purchase price of such equipment or part. Under the terms of this warranty, Seller shall not be liable for (a) consequential, collateral, special or liquidated losses or damages; (b) equipment conditions caused by normal wear and tear, abnormal conditions of use, accident, neglect, or misuse of said equipment; (c) the expense of, and loss or damage caused by, repairs or alterations made by anyone other than the Seller; (d) damage caused by abrasive materials, chemicals, scale deposits, corrosion, lightning, improper voltage, mishandling, or other similar conditions; (e) any loss, damage, or expense relating to or resulting from installation, removal or reinstallation of equipment; (f) any labor costs or charges incurred in repairing or replacing defective equipment or parts, including the cost of reinstalling parts that are repaired or replaced by Seller; (g) any expense of shipment of equipment or repaired or replacement parts; or (h) any other loss, damage or expense of any nature.

CONDITION TO WARRANTY WORK: If Buyer is in default (including, but not limited to, the failure of Buyer to maintain a current account with Seller) under the Order or any other agreement between Buyer and Seller, Buyer’s rights under the warranty shall be suspended and the original warranty period will not be extended.

PERFORMANCE: Equipment performance is not warranted or guaranteed unless separately agreed to by Seller in accordance with its guarantee policy. Performance curves and other information submitted to Buyer are approximate and no warranty or guarantee shall be deemed to arise as a result of such submittal. All testing shall be done in accordance with Seller’s standard policy.

LIABILITY LIMITATIONS: Under no circumstances shall the Seller have any liability under the Order or otherwise for liquidated damages or for collateral, consequential or special damages or for loss of profIts, or for actual losses or for loss of production or progress of construction, regardless of the cause of such damages or losses. In any event, Seller’s aggregate total liability under the Order or otherwise shall not exceed the contract price. Buyer agrees to indemnify and hold harmless Seller from all claims by third parties in excess of these limitations.

COMPLIANCE WITH LAW: Since the compliance with the various Federal, State, and Local laws and regulations concerning occupational health and safety and pollution are affected by the use, installation and operation of the equipment and other matters over which Seller has no control, Seller assumes no responsibility for compliance with those laws and regulations, whether by way of indenmity, warranty, or otherwise.

FAIRBANKS NHUIS

3501 FAIRBANKS AVENUE KANSAS CITY, KS 66106 PHONE 913-371-5000

www.FairbanksNijhuis.com

Pentair 1900 Series, 1910, 1940, 1920, 1920F Instruction And Repair Manual

Specifications and Main Features

Frequently Asked Questions

User Manual