How it Works
Goulds Pumps
Loading...
3355
User Manual
66 pgs12.32 Mb0
Table of contents
Loading...

Goulds Pumps 3355 User Manual

Installation, Operation, and Maintenance Manual
Model 3355
Table of Contents
Introduction and Safety .......................................................................................................... 3
Introduction ............................................................................................................................. 3
Safety ...................................................................................................................................... 3
Safety terminology and symbols ........................................................................................... 3
Product warranty ..................................................................................................................... 6
Transportation and Storage ................................................................................................... 8
Inspect the delivery ................................................................................................................. 8
Inspect the package ............................................................................................................. 8
Transportation guidelines ........................................................................................................ 8
Storage guidelines .................................................................................................................. 9
Pump storage requirements ................................................................................................. 9
Product Description .............................................................................................................. 10
General description ............................................................................................................... 10
Part description .................................................................................................................. 11
Nameplate information .......................................................................................................... 12
Table of Contents
Installation ............................................................................................................................. 14
Preinstallation ....................................................................................................................... 14
Pump location guidelines .................................................................................................... 14
Foundation requirements ................................................................................................... 14
Baseplate-mounting procedures ........................................................................................... 15
Prepare the baseplate for mounting ................................................................................... 15
Install the baseplate using shims or wedges ...................................................................... 15
Pump-to-driver alignment ...................................................................................................... 16
Alignment checks ............................................................................................................... 16
Permitted indicator values for alignment checks ................................................................ 17
Alignment measurement guidelines ................................................................................... 17
Attach the dial indicators for alignment ............................................................................... 17
Pump-to-driver alignment instructions ................................................................................ 18
Grout the baseplate .............................................................................................................. 19
Piping checklists ................................................................................................................... 20
General piping checklist ..................................................................................................... 21
Suction-piping checklist ...................................................................................................... 22
Discharge piping checklist .................................................................................................. 23
Final piping checklist .......................................................................................................... 23
Commissioning, Startup, Operation, and Shutdown ......................................................... 25
Preparation for startup .......................................................................................................... 25
Remove the coupling guard .................................................................................................. 26
Check the rotation - Frame Mounted ..................................................................................... 26
Couple the pump and driver .................................................................................................. 27
Install the coupling guard .................................................................................................... 27
Pump priming ........................................................................................................................ 29
Prime the pump with the suction supply above the pump ................................................... 29
Prime the pump with the suction supply below the pump ................................................... 29
Other methods of priming the pump ................................................................................... 30
Model 3355 Installation, Operation, and Maintenance Manual 1
Table of Contents
Start the pump ...................................................................................................................... 30
Pump operation precautions ................................................................................................. 31
Shut down the pump ............................................................................................................. 31
Make the final alignment of the pump and driver ................................................................... 32
Maintenance ........................................................................................................................... 33
Maintenance schedule .......................................................................................................... 33
Bearing maintenance ............................................................................................................ 34
Ball bearing types ............................................................................................................... 34
Grease lubrication schedule ............................................................................................... 34
Lubricating-grease requirements ........................................................................................ 34
Regrease the grease-lubricated bearings .......................................................................... 34
Lubricate the bearings after a shutdown period .................................................................. 35
Shaft-seal maintenance ........................................................................................................ 35
Mechanical-seal maintenance ............................................................................................ 35
Disassembly ......................................................................................................................... 36
Disassembly precautions ................................................................................................... 36
Tools required .................................................................................................................... 36
Drain the pump ................................................................................................................... 37
Prepare for disassembly ..................................................................................................... 37
Disassemble the discharge end ball bearing for the radial suction configuration ................ 37
Disassemble the pump body .............................................................................................. 38
Disassemble the suction end ball bearings ........................................................................ 38
Remove the shaft seal ........................................................................................................ 38
Preassembly inspections ...................................................................................................... 39
Replacement guidelines ..................................................................................................... 39
Reassembly .......................................................................................................................... 39
Prepare for reassembly ...................................................................................................... 39
Reassemble the shaft seal ................................................................................................. 39
Reassemble the suction end ball bearings ......................................................................... 40
Reassemble the pump body ............................................................................................... 41
Complete the reassembly for the end suction configuration ............................................... 41
Reassemble the discharge end ball bearings for the radial suction configuration .............. 42
Assembly references ............................................................................................................ 43
Torque values ..................................................................................................................... 43
Gap widths ......................................................................................................................... 43
Nozzle loads ....................................................................................................................... 44
Recommended minimum flows .......................................................................................... 46
Wearing parts and dimensions ........................................................................................... 46
Troubleshooting .................................................................................................................... 48
Alignment troubleshooting .................................................................................................... 48
Operation troubleshooting ..................................................................................................... 48
Parts Listings and Cross-sectional Drawings .................................................................... 53
Recommended spare parts ................................................................................................... 53
Radial suction all-iron cross-sectional ................................................................................... 54
Radial suction all iron with stainless steel impeller cross sectional ....................................... 55
Radial suction stainless steel cross-sectional ....................................................................... 56
End-suction all-iron cross-sectional ...................................................................................... 57
End-suction all-iron with stainless steel impeller cross-sectional .......................................... 58
End-suction stainless steel cross-sectional ........................................................................... 59
Radial suction (counterclockwise rotation) all-iron cross-sectional ....................................... 60
Radial suction (counterclockwise rotation) all-iron with stainless steel impeller cross-
sectional ................................................................................................................................ 61
Radial suction (counterclockwise rotation) stainless steel cross-sectional ........................... 62
2 Model 3355 Installation, Operation, and Maintenance Manual

Introduction and Safety

Introduction

Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Read this manual carefully before installing and using the product. Improper use of the product can cause personal injury and damage to property, and may void the warranty.
NOTICE:
Save this manual for future reference, and keep it readily available at the location of the unit.
Introduction and Safety
Requesting other information
Special versions can be supplied with supplementary instruction leaflets. See the sales contract for any modifications or special version characteristics. For instructions, situations, or events that are not considered in this manual or in the sales documents, please contact the nearest ITT representative.
Always specify the exact product type and identification code when requesting technical information or spare parts.

Safety

WARNING:
• The operator must be aware of safety precautions to prevent physical injury.
• Any pressure-containing device can explode, rupture, or discharge its contents if it is over­pressurized. Take all necessary measures to avoid over-pressurization.
• Operating, installing, or maintaining the unit in any way that is not covered in this manual could cause death, serious personal injury, or damage to the equipment. This includes any modification to the equipment or use of parts not provided by ITT. If there is a question regarding the intended use of the equipment, please contact an ITT representative before proceeding.
• Do not change the service application without the approval of an authorized ITT representative.
• Never operate the pump without safety devices installed.
• Never operate the pump with the discharge valve closed.

Safety terminology and symbols

About safety messages
It is extremely important that you read, understand, and follow the safety messages and regulations carefully before handling the product. They are published to help prevent these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
Model 3355 Installation, Operation, and Maintenance Manual 3
Introduction and Safety
Hazard levels
Hazard level Indication
A hazardous situation which, if not avoided, will
DANGER: result in death or serious injury
Hazard categories
WARNING: result in death or serious injury
CAUTION: result in minor or moderate injury
NOTICE:
A hazardous situation which, if not avoided, could
A hazardous situation which, if not avoided, could
• A potential situation which, if not avoided, could result in undesirable conditions
• A practice not related to personal injury
Hazard categories can either fall under hazard levels or let specific symbols replace the ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary hazard levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
The Ex symbol
The Ex symbol indicates safety regulations for Ex-approved products when used in atmospheres that are potentially explosive or flammable.

Environmental safety

The work area
Always keep the station clean to avoid and/or discover emissions.
Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
• Appropriately dispose of all waste.
• Handle and dispose of the processed liquid in compliance with applicable environmental regulations.
• Clean up all spills in accordance with safety and environmental procedures.
• Report all environmental emissions to the appropriate authorities.
4 Model 3355 Installation, Operation, and Maintenance Manual
WARNING:
Do NOT send the product to the ITT manufacturer if it has been contaminated by any nuclear radiation. Inform ITT so that accurate actions can take place.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.

User safety

General safety rules
These safety rules apply:
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment within the work area:
Introduction and Safety
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
• Helmet
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
• Hearing protection
• First-aid kit
• Safety devices
NOTICE:
Never operate a unit unless safety devices are installed. Also see specific information about safety devices in other chapters of this manual.
Electrical connections
Electrical connections must be made by certified electricians in compliance with all internation­al, national, state, and local regulations. For more information about requirements, see sections dealing specifically with electrical connections.
Wash the skin and eyes
1. Follow these procedures for chemicals or hazardous fluids that have come into contact with your eyes or your skin:
Condition Action
Chemicals or hazardous fluids in eyes
Chemicals or hazardous fluids on skin
1. Hold your eyelids apart forcibly with your fingers.
2. Rinse the eyes with eyewash or running water for at least 15 minutes.
3. Seek medical attention.
1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. Seek medical attention, if necessary.

Ex-approved products

Follow these special handling instructions if you have an Ex-approved unit.
Model 3355 Installation, Operation, and Maintenance Manual 5
Introduction and Safety
Personnel requirements
These are the personnel requirements for Ex-approved products in potentially explosive atmospheres:
• All work on the product must be carried out by certified electricians and ITT-authorized mechanics. Special rules apply to installations in explosive atmospheres.
• All users must know about the risks of electric current and the chemical and physical characteristics of the gas, the vapor, or both present in hazardous areas.
• Any maintenance for Ex-approved products must conform to international and national standards (for example, IEC/EN 60079-17).
ITT disclaims all responsibility for work done by untrained and unauthorized personnel.
Product and product handling requirements
These are the product and product handling requirements for Ex-approved products in potentially explosive atmospheres:
• Only use the product in accordance with the approved motor data.
• The Ex-approved product must never run dry during normal operation. Dry running during service and inspection is only permitted outside the classified area.
• Before you start work on the product, make sure that the product and the control panel are isolated from the power supply and the control circuit, so they cannot be energized.
• Do not open the product while it is energized or in an explosive gas atmosphere.
• Make sure that thermal contacts are connected to a protection circuit according to the approval classification of the product, and that they are in use.
• Intrinsically safe circuits are normally required for the automatic level-control system by the level regulator if mounted in zone 0.
• The yield stress of fasteners must be in accordance with the approval drawing and the product specification.
• Do not modify the equipment without approval from an authorized ITT representative.
• Only use parts that are provided by an authorized ITT representative.
Description of ATEX
The ATEX directives are a specification enforced in Europe for electrical and non-electrical equipment installed in Europe. ATEX deals with the control of potentially explosive atmos­pheres and the standards of equipment and protective systems used within these atmos­pheres. The relevance of the ATEX requirements is not limited to Europe. You can apply these guidelines to equipment installed in any potentially explosive atmosphere.
Guidelines for compliance
Compliance is fulfilled only when you operate the unit within its intended use. Do not change the conditions of the service without the approval of an ITT representative. When you install or maintain explosion proof products, always comply with the directive and applicable standards (for example, IEC/EN 60079–14).

Product warranty

Coverage
ITT undertakes to remedy faults in products from ITT under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to an ITT representative within the warranty period.
• The product is used only under the conditions described in this manual.
• The monitoring equipment incorporated in the product is correctly connected and in use.
• All service and repair work is done by ITT-authorized personnel.
6 Model 3355 Installation, Operation, and Maintenance Manual
Limitations
Warranty claim
Introduction and Safety
• Genuine ITT parts are used.
• Only Ex-approved spare parts and accessories authorized by ITT are used in Ex-approved products.
The warranty does not cover faults caused by these situations:
• Deficient maintenance
• Improper installation
• Modifications or changes to the product and installation made without consulting ITT
• Incorrectly executed repair work
• Normal wear and tear
ITT assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
ITT products are high-quality products with expected reliable operation and long life. However, should the need arise for a warranty claim, then contact your ITT representative.
Model 3355 Installation, Operation, and Maintenance Manual 7

Transportation and Storage

Transportation and Storage

Inspect the delivery

Inspect the package

1. Inspect the package for damaged or missing items upon delivery.
2. Note any damaged or missing items on the receipt and freight bill.
3. File a claim with the shipping company if anything is out of order. If the product has been picked up at a distributor, make a claim directly to the distributor.

Inspect the unit

1. Remove packing materials from the product. Dispose of all packing materials in accordance with local regulations.
2. Inspect the product to determine if any parts have been damaged or are missing.
3. If applicable, unfasten the product by removing any screws, bolts, or straps. For your personal safety, be careful when you handle nails and straps.
4. Contact your sales representative if anything is out of order.

Transportation guidelines

Precautions
WARNING:
• Stay clear of suspended loads.
• Observe accident prevention regulations in force.

Pump handling and lifting

Precautions for moving the pump
Use care when moving pumps. Consult with a lifting and rigging specialist before lifting or moving the pump to avoid possible damage to the pump or injury to personnel.
WARNING:
Make sure that the unit cannot roll or fall over and injure people or damage property.
NOTICE:
Use a forklift truck with sufficient capacity to move the pallet with the pump unit on top.
Precautions for lifting the pump
WARNING:
Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear steel­toed shoes at all times.
NOTICE:
• Make sure that the lifting equipment supports the entire assembly and is only used by authorized personnel.
• Do not attach sling ropes to shaft ends.
8 Model 3355 Installation, Operation, and Maintenance Manual
Lifting the pump
Transportation and Storage
Hoist a bare pump using suitable slings under the bearing housing saddle on each end.
Figure 1: Example of the proper lifting method for a bare pump
Figure 2: Example of the proper lifting method for a bare pump
Baseplate-mounted units have lifting points for use with proper lifting devices.
Figure 3: Example of the proper lifting method for baseplate-mounted units with a driver

Storage guidelines

Storage location
The product must be stored in a covered and dry location free from heat, dirt, and vibrations.
NOTICE:
• Protect the product against humidity, heat sources, and mechanical damage.
• Do not place heavy weights on the packed product.

Pump storage requirements

Storage requirements depend on the amount of time that you store the unit. The normal packaging is designed only to protect the unit during shipping.
Length of time in storage Storage requirements
Upon receipt/short-term (less than six months)
Long-term (more than six months)
• Store in a covered and dry location.
• Store in a covered and dry location.
• Store the unit free from heat, dirt, and vibra­tions.
• Rotate the shaft by hand several times at least every three months.
You can purchase long-term storage treatment with the initial unit order or you can purchase it and apply it after the units are already in the field. Contact your local ITT sales representative.
Model 3355 Installation, Operation, and Maintenance Manual 9

Product Description

Product Description

General description

The Goulds Model 3355 is a radially-split, segmented casing, multistage pump that is designed with modular interstage components. This pump is manufactured in cast iron and 316 stainless steel. This pump can be configured in two ways:
• Radial suction (RS) configuration
• End suction (ES) configuration
Radial suction configuration
This configuration features radial suction and discharge nozzles. You can position each nozzle either vertically or horizontally at 90° to either side. This design consists of two robust bearing housings with traditional bearings and mechanical seals on each end of the pump.
End suction configuration
This configuration features an end suction nozzle in conjunction with a radial discharge nozzle. You can position the radial discharge nozzle either vertically or horizontally at 90° to either side. The suction end of the pump utilizes a product-lubricated bearing that elminates the need for a second bearing housing and mechanical seal.
Direction of rotation
The standard pump rotation is clockwise. As an option, the radial suction (RS) configuration can be shaft-driven from the suction end in a counterclockwise rotation.
Intended applications
These pumps are well-suited for reverse osmosis and boiler feed applications.
10 Model 3355 Installation, Operation, and Maintenance Manual

Part description

Casing
The pump consists of three pressure boundary parts:
Diffusers
Multi−vane diffusers provide smooth pulsation−free operation and eliminate radial loads in order to increase the life of the bearing. This pump uses a diffuser design that is not an integral part of the interstage casing. Each diffuser is precision machined to perfectly match the impeller hydraulics.
Impeller
The impeller is enclosed and keyed to the shaft. An inducer option is available for the end suction arrangement.
Seal chamber
Product Description
• Suction casing - available in an end suction (ES) or radial suction (RS) configuration The suction casing has 150 or 300 lb. flanges and the discharge casing has 300 or 600 lb. flanges.
• Discharge casing
• Interstage casings - number is dependent on the number of stages
• The tapered bore seal chamber is self-venting and offers maximum cooling and flushing at the seal face which increases the mechanical seal life.
• The standard seal arrangement features a single-balanced component seal on the discharge end and a single-unbalanced component seal on the suction end of the RS configuration.
• Internal flushing (Plan 01) is standard.
• External piping plans are not required.
Shaft
Shaft sleeves
Bearings
Baseplate
Couplings
The shaft is sized to transmit the required power across all operating conditions of the pump. Impeller keyways are staggered in order to maintain a rotational shaft balance.
Renewable shaft sleeves protect the shaft in the seal chamber area which provides a longer shaft life.
• Bearings are grease lubricated.
• The thrust bearing consists of:
• A double-row thrust bearing for pump sizes 1.5 x 2.5−7 and 2.5 x 4−8
• Two angular contact ball bearings for pump sizes 4 x 5−10 and 5 x 6−11
These thrust bearing configurations provide bi-directional load-carrying capability.
• The RS configuration uses a grease-lubricated radial ball bearing.
• The ES configuration uses a product−lubricated radial bearing located between the first and second stages.
The pump and motor are mounted on a common baseplate. The rigid, fabricated steel design reduces vibration and helps to maintain the positive alignment of the pump and motor.
The standard baseplate design facilitates non−spacer couplings.
Model 3355 Installation, Operation, and Maintenance Manual 11
Product Description
Coupling guard
Steel coupling guards are available and are designed to comply with OSHA requirements.

Nameplate information

Important information for ordering
Every pump has a nameplate that provides information about the pump. The nameplate is located on the pump casing.
When you order spare parts, identify this pump information:
• Model
• Size
• Serial number
• Item numbers of the required parts
Refer to the nameplate on the pump casing for most of the information. See Parts List for item numbers.
Nameplate types
Nameplate Description
Pump casing Provides information about the hydraulic characteristics of the pump.
ATEX If applicable, your pump unit might have an ATEX nameplate affixed to the pump, the
The formula for the pump size is: Discharge x Suction - Nominal Maximum Impeller Diameter in inches.
(Example: 2x3-8)
baseplate, or the discharge head. The nameplate provides information about the ATEX specifications of this pump.
Nameplate on the pump casing using English units
Table 1: Explanation of nameplate on the pump casing
Nameplate field Explanation
IMPLR. DIA. Impeller diameter, in inches MAX. DIA. Maximum impeller diameter, in inches GPM Rated pump flow, in gallons per minute FT HD Rated pump head, in feet RPM Rated pump speed, revolutions per minute MOD. Pump model SIZE Size of the pump STD. NO. ANSI standard designation MAT L. CONST. Material of which the pump is constructed SER. NO. Serial number of the pump MAX DSGN PSI Maximum pressure at 100ºF according to the pump design
@ 100ºF
12 Model 3355 Installation, Operation, and Maintenance Manual
ATEX nameplate
Product Description
Nameplate field Explanation
II Group 2 2 Category 2 G/D Pump can be used when gas and dust are present T4 Temperature class
Table 2: Temperature class definitions
Code Maximum permissible surface Minimum permissible surface
temperature in °F (°C) temperature in °F (°C)
T1 842 (450) 700 (372) T2 572 (300) 530 (277) T3 392 (200) 350 (177) T4 275 (135) 235 (113) T5 212 (100) Option not available T6 185 (85) Option not available
NOTICE:
Make sure that the code classifications on the pump are compatible with the specific environment in which you plan to install the equipment. If they are not compatible, do not operate the equipment and contact your ITT representative before you proceed.
Model 3355 Installation, Operation, and Maintenance Manual 13

Installation

Installation

Preinstallation

Precautions
WARNING:
• When installing in a potentially explosive environment, make sure that the motor is properly certified.
• You must earth (ground) all electrical equipment. This applies to the pump equipment, the driver, and any monitoring equipment. Test the earth (ground) lead to verify that it is connected correctly.
• Electrical Connections must be made by certified electricians in compliance with all international, national, state, and local rules.
NOTICE:
Supervision by an authorized ITT representative is recommended to ensure proper installation. Failure to do so may result in equipment damage or decreased performance.

Pump location guidelines

WARNING:
Assembled units and their components are heavy. Failure to properly lift and support this equipment can result in serious physical injury and/or equipment damage. Lift equipment only at the specifically identified lifting points. Lifting devices such as eyebolts, slings, and spreaders must be rated, selected, and used for the entire load being lifted.
Guideline Explanation/comment
Keep the pump as close to the liquid source as This minimizes the friction loss and keeps the practically possible. suction piping as short as possible.
Make sure that the space around the pump is This facilitates ventilation, inspection, maintenance, sufficient. and service.
A minimum of 3 feet (1 meter) is the recommenda­tion.
If you require lifting equipment such as a hoist or This makes it easier to properly use the lifting tackle, make sure that there is enough space above equipment and safely remove and relocate the the pump. components to a safe location.
Protect the unit from weather and water damage This is applicable if nothing else is specified. due to rain, flooding, and freezing temperatures.
Do not install and operate the equipment in closed Acceptable devices: systems unless the system is constructed with properly-sized safety devices and control devices.
Take into consideration the occurrence of unwanted The best pump location for noise and vibration noise and vibration. absorption is on a concrete floor with subsoil

Foundation requirements

Requirements
• The foundation must be able to absorb any type of vibration and form a permanent, rigid support for the unit.
• The location and size of the foundation bolt holes must match those shown on the assembly drawing provided with the pump data package.
• Pressure relief valves
• Compression tanks
• Pressure controls
• Temperature controls
• Flow controls If the system does not include these devices, consult the engineer or architect in charge before you operate the pump.
underneath.
14 Model 3355 Installation, Operation, and Maintenance Manual
Sleeve-type bolts
Installation
• The foundation must weigh between two and three times the weight of the complete pump, baseplate, and drive assembly.
• Provide a flat, substantial concrete foundation in order to prevent strain and distortion when you tighten the foundation bolts.
• Sleeve-type and J-type foundation bolts are most commonly used. Both designs allow movement for the final bolt adjustment.
1. Baseplate
2. Shims or wedges
3. Foundation
4. Sleeve
5. Dam
6. Bolt
J-type bolts
1. Baseplate
2. Shims or wedges
3. Foundation
4. Dam
5. Bolt

Baseplate-mounting procedures

Prepare the baseplate for mounting

1. Remove all the attached equipment from the baseplate.
2. Clean the underside of the baseplate completely.
3. If applicable, coat the underside of the baseplate with an epoxy primer. Use an epoxy primer only if you used an epoxy-based grout.
4. Remove the rust-proofing coat from the machined mounting pads using an appropriate solvent.
5. Remove water and debris from the foundation-bolt holes.

Install the baseplate using shims or wedges

Required tools:
Model 3355 Installation, Operation, and Maintenance Manual 15
Installation
• Two sets of shims or wedges for each foundation bolt
• Two machinist's levels
• Baseplate-leveling worksheet
1. If you use sleeve-type bolts, fill the bolt sleeves with packing material or rags to prevent grout from entering the bolt holes.
2. Put the sets of wedges or shims on each side of each foundation bolt. Make sure that the wedges extend 0.75 in. (19 mm) to 1.5 in. (38 mm) above the foundation to provide adequate space for grouting. The wedges will provide adequate support for the baseplate after it is grouted.
3. Lower the baseplate carefully onto the foundation bolts.
4. Put the machinist's levels across the mounting pads of the driver and the mounting pads of the pump.
NOTICE:
Remove all dirt from the mounting pads in order to make sure that you achieve the correct leveling. Failure to do so can result in equipment damage or decreased performance.
5. Level the baseplate both lengthwise and across by adding or removing shims or moving the wedges. These are the leveling tolerances:
• A maximum difference of 0.125 in. (3.2 mm) lengthwise
• A maximum difference of 0.059 in. (1.5 mm) across
You can use the baseplate-leveling worksheet when you take the readings.
6. Hand-tighten the nuts for the foundation.

Pump-to-driver alignment

Precautions
WARNING:
• Follow shaft alignment procedures in order to prevent catastrophic failure of drive components or unintended contact of rotating parts. Follow the coupling installation and operation procedures from the coupling manufacturer.
• Always disconnect and lock out power to the driver before you perform any installation or maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical injury.
• Electrical connections must be made by certified electricians in compliance with all international,
national, state, and local rules.
• Refer to driver/coupling/gear manufacturers installation and operation manuals (IOM) for specific
instructions and recommendations.
NOTICE:
Proper alignment is the responsibility of the installer and the user of the unit. Check the alignment of frame-mounted units before you operate the unit. Failure to do so can result in equipment damage or decreased performance.

Alignment checks

When to perform alignment checks
You must perform alignment checks under these circumstances:
• The process temperature changes.
• The piping changes.
• The pump has been serviced.
16 Model 3355 Installation, Operation, and Maintenance Manual
Types of alignment checks
Type of check When it is used
Initial alignment (cold alignment) Prior to operation when the pump and the driver are at ambient check temperature.
Final alignment (hot alignment) After operation when the pump and the driver are at operating check temperature.
Initial alignment (cold alignment) checks
When Why
Before you grout the baseplate This ensures that alignment can be accomplished. After you grout the baseplate This ensures that no changes have occurred during the grouting
process.
After you connect the piping This ensures that pipe strains have not altered the alignment.
If changes have occurred, you must alter the piping to remove pipe strains on the pump flanges.
Final alignment (hot alignment) checks
When Why
After the first run This ensures correct alignment when both the pump and the driver
are at operating temperature.
Periodically This follows the plant operating procedures.

Permitted indicator values for alignment checks

Installation
NOTICE:
The specified permitted reading values are valid only at operating temperature. For cold settings, other values are permitted. You must use the correct tolerances. Failure to do so can result in misalignment and reduced pump reliability.
When dial indicators are used to check the final alignment, the pump and drive unit are correctly aligned when these conditions are true:
• The total indicator runout is a maximum of 0.002 in. (0.05 mm) at operating temperature.
• The tolerance of the indicator is 0.0005 in./in. (0.0127 mm/mm) of indicator separation at operating temperature.

Alignment measurement guidelines

Guideline Explanation
Rotate the pump coupling half and the driver This prevents incorrect measurement. coupling half together so that the indicator rods have contact with the same points on the driver coupling half.
Move or shim only the driver in order to make This prevents strain on the piping installations. adjustments.
Make sure that the hold-down bolts for the driver This keeps the driver stationary since movement feet are tight when you take indicator measure- causes incorrect measurement. ments.
Make sure that the hold-down bolts for the driver This makes it possible to move the driver when you feet are loose before you make alignment correc- make alignment corrections. tions.
Check the alignment again after any mechanical This corrects any misalignments that an adjustment adjustments. may have caused.

Attach the dial indicators for alignment

You must have two dial indicators in order to complete this procedure.
1. Attach two dial indicators on the pump coupling half (X): a) Attach one indicator (P) so that the indicator rod comes into contact with the perimeter
of the driver coupling half (Y). This indicator is used to measure parallel misalignment.
Model 3355 Installation, Operation, and Maintenance Manual 17
Installation
b) Attach the other indicator (A) so that the indicator rod comes into contact with the inner
end of the driver coupling half. This indicator is used to measure angular misalignment.
2. Rotate the pump coupling half (X) in order to check that the indicators are in contact with the driver coupling half (Y) but do not bottom out.
3. Adjust the indicators if necessary.

Pump-to-driver alignment instructions

Perform angular alignment for a vertical correction
1. Set the angular alignment indicator to zero at the top-center position (12 o’clock) of the driver coupling half (Y).
2. Rotate the indicator to the bottom-center position (6 o’clock).
3. Record the indicator reading.
When the reading value is... Then...
Negative The coupling halves are farther apart at the
Positive The coupling halves are closer at the bottom than
bottom than at the top. Perform one of these steps:
• Add shims in order to raise the feet of the driver at the shaft end.
• Remove shims in order to lower the feet of the driver at the other end.
at the top. Perform one of these steps:
• Remove shims in order to lower the feet of the driver at the shaft end.
• Add shims in order to raise the feet of the driver at the other end.
Perform angular alignment for a horizontal correction
1. Set the angular alignment indicator (A) to zero on left side of the driver coupling half (Y), 90° from the top-center position (9 o’clock).
2. Rotate the indicator through the top-center position to the right side, 180° from the start position (3 o’clock).
3. Record the indicator reading.
When the reading value is... Then...
Negative The coupling halves are farther apart on the right side than
Positive The coupling halves are closer together on the right side
the left. Perform one of these steps:
• Slide the shaft end of the driver to the left.
• Slide the opposite end to the right.
than the left. Perform one of these steps:
• Slide the shaft end of the driver to the right.
• Slide the opposite end to the left.
Perform parallel alignment for a vertical correction
Refer to the alignment table in "Permitted indicator values for alignment checks" (see Table of Contents for location of table) for the proper cold alignment value based on the motor temperature rise and the pump operating temperature.
Before you start this procedure, make sure that the dial indicators are correctly set up. A unit is in parallel alignment when the parallel indicator (P) does not vary by more than as
measured at four points 90° apart at the operating temperature.
1. Set the parallel alignment indicator (P) to zero at the top-center position (12 o’clock) of the driver coupling half (Y).
2. Rotate the indicator to the bottom-center position (6 o’clock).
3. Record the indicator reading.
18 Model 3355 Installation, Operation, and Maintenance Manual
Loading...
+ 46 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use