Pentair FAIRBANKS NIJHUIS 1900 Series Operating instructions

Model 1910
Model 1940
Models 1920
and 1920F
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.
1900 SERIES
HORIZONTAL SPLITCASE PUMPS
INSTRUCTION AND REPAIR MANUAL
Part #FM-03-529 | © 2014 Pentair Ltd. | 04/30/14

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
TABLE OF CONTENTS:

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.
3

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?
PRESTART-UP AND START-UP CHECK LIST
Contractor Pump Serial Number
Project Name Pump Model Number
Procedure Yes No N/A Comments
Customer’s Representative
Witnessing Start-Up
Date
Company
Name
Date
Name
Fairbanks Nijhuis™ Pump Corporation
Representative Conducting Start-Up

1900 Series Horizontal Splitcase Pumps
Instruction and Repair Manual
5
04/30/14
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
[phone]
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.
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.