Goulds Pumps GSP Series Manual

ITT
Goulds Pumps
Models GSP
Installation, Operation and Maintenance Instructions
Goulds Pumps is a brand of ITT Corporation.
www.goulds.com
Engineered for life
Commercial Water
IM206

2
ITT
GOULDS PUMPS
Commercial Water
Table of Contents
Topic Page
Introduction and Safety .......................................................................................................................... 3
Transportation and Storage..................................................................................................................... 5
Product Description................................................................................................................................ 6
Installation ............................................................................................................................................. 8
Commissioning, Startup, Operation and Shutdown .............................................................................. 13
Maintenance......................................................................................................................................... 15
Troubleshooting ................................................................................................................................... 20
Parts Listing and Cross Sectional Drawings........................................................................................... 24
Appendix.............................................................................................................................................. 25
Product code structure.......................................................................................................................... 25
Owners Information
Complete this information for your records.
Model number and serial number may be found
on the tag mounted to the pump casing.
Model Number _______________________________
Serial Number _________________________________
Dealer ______________________________________
Dealer phone number _______________________
Date of purchase ____________________________
Date of installation _________________________

3
ITT
GOULDS PUMPS
Commercial Water
I. Introduction and Safety
Introduction
Description
This manual provides instructions for the Installation, Operation and Maintenance of
the Goulds Model GSP pumps. This manual covers the standard product plus common
options that are available.
Requirement
This manual must be read and understood before installation and start-up. Goulds shall
not be liable for physical injury, damage or delays caused by a failure to observe the
instructions for installation, operation and maintenance contained in this manual.
Content
This instruction manual covers several different pump models that all have similar
power end configurations. Most assembly, disassembly and inspection procedures are
the same for all the pumps. However, where there are differences, they are called out
separately within the manual. The design, materials and workmanship incorporated
in the construction of Goulds pumps makes them capable of giving long, trouble free
service. The life and satisfactory service of any mechanical unit, however, is enhanced
and extended by correct application, proper installation, periodic inspection, condition
monitoring and careful maintenance. This instruction manual was prepared to assist
operators in understanding the construction and the correct methods of installing,
operating and maintaining these pumps.
Key Topics
Proper Installation
Start up Procedures
Operation Procedures
Routine Maintenance
Pump Overhaul
Trouble Shooting
Identifying spare or repair parts

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Safety
It is extremely important that you read, understand, and follow the safety messages
and regulations carefully before handling an ITT product. They are published to help
prevent
• personal accidents and health problems
• damage to the product
• product malfunction
Observe all safety messages highlighted in other sections of this manual.
A pump is a pressure-containing device with rotating parts that can be dangerous.
Caution: You must observe the instructions for installation, operation, and
maintenance contained in this manual. Failure to do so could result in physical
injury, damage, or delays.
Safety message levels
Table 1: Definitions
Safety message level Indication
Danger: Indicates a hazardous situation which, if not
avoided, will result in death or serious injury.
Warning: Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
Caution: Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.
Note: Indicates a potential situation which, if not avoided,
may result in undesirable results or state. Indicates a
practice not related to personal injury.
Electrical Hazard: Indicates the possibility of electrical risks if
direction are not applied in a proper manner.
Environmental safety
Preventive measures for the working area
Always keep the pump station clean to avoid and/or discover emissions.
Recycling guidelines
Always recycle according to the guidelines listed below:
1. Follow local laws and regulations regarding recycling if the unit or parts are accepted
by an authorized recycling company.
2. If the first guideline is not applicable then return the unit or parts to the nearest
ITT representative.
Waste and emissions
Observe these safety regulations regarding waste and emissions:
• Dispose appropriately of all waste.
• Handle and dispose of the pumpage 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.

5
Reference for electrical installation
For electrical installation recycling requirements, consult your local electric utility.
User health and safety
Safety equipment
Use safety equipment according to the company regulations. The following safety
equipment should be used within the working area depending on the fluid being
pumped:
• helmet
• safety goggles (with side shields)
• protective shoes
• protective gloves
• gas mask
• hearing protection
Note: The noise level of the product is lower than 70 dB. However,
the noise level of 70 dB may be exceeded in some installations and at
certain operating points on the performance curve. Make sure that
you understand the noise level requirements in the environment where
the pump is installed. Failure to do so may result in hearing loss or
violation of local laws.
The working area
Observe these regulations and warnings in the working area:
• Always keep the work area clean.
• Pay attention to the chemical and physical characteristics of the gas and vapors
present in hazardous areas.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc ash
hazards.
Product and product positioning requirements
Observe these requirements for the product and the product positioning:
• Never operate a pump unless safety devices are installed.
• Three-phase motors must have a properly sized starter with properly sized heaters
to provide overload and undervoltage protection. Single-phase motors have built-in
overload protectors.
• Never start a pump without the proper priming.
• Never run a pump below the minimum rated ow or with any suction or discharge
valve closed.
Electrical connections
Electrical connections must be made by authorized electricians in compliance with all
international, national, state, and local rules.
Observe the following regulations and warnings for electrical connections.
• Make sure that the product is isolated from the power supply and can not be
energized by mistake. This rule applies to the control circuit as well.
• Make sure that the thermal contacts are connected to a protection circuit according
to the product approvals, and that they are in use.
Observe the following regulations for grounding connections.
Table 2: Grounding
Grounding regulation Comment
All electric equipment must be grounded. This rule applies to pumps and mixers as
well as monitoring equipment.

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Precautions before work
Observe the following safety precautions before working with or in connection with the
product:
• Provide a suitable barrier around the work area, for example a guard rail.
• Make sure that all safety guards are in place and secure.
• Make sure that the equipment is properly insulated when operating at extreme
temperatures.
• Allow all system and pump components to cool before you handle them.
• Make sure that you have a clear path of retreat.
• Make sure that the product cannot roll or fall over and injure people or damage
property.
• Make sure that the lifting equipment is in good condition.
• Use a lifting harness, a safety line, and a breathing device as required.
• Make sure that the product has been thoroughly cleaned.
• Make sure that there are no poisonous gases within the work area.
• Make sure that a rst-aid kit is close at hand.
• Disconnect and lock out power before servicing.
• Check the explosion risk before welding or using electric hand tools.
Precautions during work
Observe the following safety precautions when working with or in connection with the
product:
• Never work alone.
• Stay clear of suspended loads.
• Always lift the product by its lifting device.
• Beware of the risk of a sudden start if the product is used with an automatic level
control.
• Beware of the starting jerk, which can be powerful.
• Rinse the components in water after disassembling the pump.
• Do not exceed the maximum working pressure of the pump.
• Do not open any vent or drain valves or remove any plugs while the system is
pressurized. Ensure that the pump is isolated from the system and that pressure is
relieved before you disassemble the pump, remove plugs, or disconnect piping.
• Always bear in mind the risk of
• electrical accidents
• burn injuries
Clean chemicals from the eyes
1. Forcibly hold the eyelids apart with the fingers.
2. Rinse the eyes for at least 15 minutes. Use an eyewash or running water.
3. Seek medical attention.
Clean chemicals from the body
1. Remove contaminated clothing.
2. Wash the skin with soap and water for at least 1 minute.
3. If required, seek medical attention.
Product approval standards
Regular standards
All electrical ratings and performance of the motors comply with UL, CSA and NEMA
standards.
3-A®standards
The GSP is certified to 3-A®02-10 sanitary food and beverage standards. The GSP
platform and legs are certified to 3-A®88-00 standards.

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Product warranty
Personnel requirements
All work on the product must be carried out by certified electricians and ITT
authorized mechanics.
ITT disclaims all responsibility for work done by untrained and unauthorized
personnel.
Modification and spare parts
Modifications or changes to the product/installation should only be carried out after
consulting with ITT. Original spare parts and accessories authorized by ITT are essential
for compliance. The use of other parts can invalidate any claims for warranty or
compensation and explosion-proof approvals.
Warranty claim
For warranty claim, contact your ITT Fluid Technology representative.
II. Transportation and Storage
Description
This section describes recommended methods for receiving, storing and handling the
pump prior to physical installation.
Receiving
The pump should be uncrated or unboxed when it is received so that it can be
completely inspected. Carefully check that everything is in good order. Make notes
of damaged or missing items on the receipt and freight bill. File any claims with the
transportation company as soon as possible.
Storage
Short Term: For storage of less than six months, the normal packaging procedures used
by Goulds Pumps are designed to protect the pump during shipping. After receipt, store
in a covered and dry location.
Long Term: For storage of more than six months, preservative treatment of bearings
and machined surfaces will be required. Rotate the pump and motor shaft several times
every three months. Refer to driver and coupling manufacturers for their long term
storage procedures. Store in a covered, dry location.
Handling
Warning: Pump and components are heavy. Failure to properly lift and support
equipment could result in serious physical injury or damage to pumps. Steel toed shoes
must be worn at all times.

8
Use care when moving pumps. Lifting equipment must be able to adequately support
the entire assembly. Hoist pump using a suitable sling under the motor adapter and
motor (Figure 1). For larger pumps, motor lifting rings may be used.
III. Product Description
Description
This section provides a general description of the Goulds Model GSP and key
engineering specifications.
Overview
The Goulds model GSP pumps are single stage, end suction, centrifugal pumps designed
to meet the rigorous standards of hygiene needed by the food and beverage industries.
Pumps are used in the food industry as process or clean in place pumps.
The GSP series meets 3A Sanitary Standards for Centrifugal and Positive Rotary Pumps,
Number 02-10 and 3A Sanitary Standard for Machine Leveling Feet and Supports,
Number 88-00 for both internal and external hygienic design. This enables operators
to insure the purity of their process and the cleanliness of their plant to meet both local
and national health and safety regulations. Not all products marked 3A meet these
design and clean-ability standards.
Mechanical seals are FDA approved and several versions of the pump have EHEDG
European sanitary certification.
Pump impellers are fully open, and either threaded or key driven and held in position
by an impeller bolt and o-ring. Impeller hubs are extended through the seal and
backplate eliminating the need for shaft sleeves.
Casings are full volute in design. 316 Stainless parts and welds are polished to
Ra<0.8 um.
Suction and discharge connections are Tri-clamp sanitary flange type.
Close-coupled units have NEMA standard JM motors with C-face mounting and key
driven shaft extension or for smaller pumps, NEMA standard 56J motors with threaded
shafts. Pumps are available with standard ODP or TEFC motors with shrouds and
pump stands or wash down enclosures. These are provided for hygienic cleaning of the
pump and its surroundings.

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Engineering Data
Noise level
The noise generated by a pump depends on different factors. Most important are: power,
speed and brand name of the motor, whether there is cavitation or not, operating point
of the pump, and handling of small quantities of air. A guide value for the sound pressure
level measured in dB(A) at a distance of 3 feet from the pump with a 2 pole motor
operating at 60 Hz in ideal circumstances with cold water is 78 dB(A) for pumps up to 5
hp, 83 to 85 dB(A) for pumps with motors ranging from 7.5 to 50 hp. For pumps with 4
or 6 pole motors, the value can be decreased with +/- 8 dB(A).
Maximum Liquid Temperature:
250ºF (120ºC)
Note: Pump and piping should be protected from skin contact if temperature is less
than 10ºC or higher than 40ºC
Maximum Working Pressure (Fluid temperature dependant):
S1 – 125 PSIG (9 Bar); S2 – 150 PSIG (10.5 Bar)
Maximum Suction Pressure:
=125 PSIG/150 PSIG – Pump generated pressure (see performance curve)
Starts per hour:
20 evenly distributed with standard across the line start
Unlimited with soft starter or drive
Connections
The following table shows the discharge and suction sizes in inches for each of the GSP
pumps. The Pump designation is the first three characters of the pump model number.
Pump Designation Fitting Size (discharge x Suction) Nominal Impeller
S1A 1 x 1.5 5
S1B 2 x 2.5 4
S2A 1.5 x 2 7
S2B 2 x 2.5 7
S2C 2.5 x 3 7
S2D 1.5 x 2 8
S2E 2 x 2.5 8
S2F 2 x 2.5 9
S2G 2.5 x 3 9
S2H 2 x 2.5 11
Name Plate
Model #
The various versions of the GSP are identified by a product code number on the pump
label. This number is also the catalog number for the pump. The meaning of each
digit in the product code number is shown in the Appendix. Not all combinations are
possible; consult your Goulds Pumps distributor for specic requirements.
Performance
Performance curves and dimension drawings for your Goulds model GSP may be found
in the selection program available on www.goulds.com. The correct performance curve
can be determined from the name plate model number as defined above. You will need
to know pump size, impeller trim and operating speed.

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IV Installation
Description
This section covers the general information and cautions about installing your pump as
well as specific steps to take during installation.
Location
Locate the pump as near to the liquid source as practical and below the level of the
liquid for automatic self priming. If the pump must be above the liquid source, a foot
valve must be provided on the suction pipe.
Allow adequate space around the pump for servicing and ventilation.
Protect the pump and piping from freezing temperatures.
Provide other weather protection consistent with the motor enclosure rating. The
maximum ambient temperature for the pump is 40ºC (104ºF).
For installation at altitudes greater than 3,000 feet, the pump selection should be de-
rated due to the difference in barometric pressure. Contact your Goulds distributor for
assistance in selection.
Foundation
The foundation must be able to absorb any vibration and to form a permanent, rigid
support for the pumping unit. Close-coupled units may be installed horizontally,
inclined or vertically with the motor above the pump.
Your GSP pump has been supplied with a rigid base plate with four legs. As supplied,
this is adequate for portable use where the pump may be moved to various places in the
plant based on process requirements.
Optional legs are available with flanged bases which can be used for permanent
mounting to the floor. Hold down bolts should be sunk in concrete and aligned with the
holes in the flanges. When the concrete has dried, tighten nuts to keep the pump firmly
in position.
NOTICE: Do not install with motor below pump. Any leakage or condensation will
affect the motor.
Initial Assembly
Your GSP pump has been shipped with the pump and motor assembled, but the base,
legs and motor cover (if ordered) need to be assembled. Refer to drawings on page 24.
1. Install o-rings into base then install legs using some soapy water or o-ring lubricant.
2. Place the threaded end of one of the legs through the o-ring supplied into the socket
provided on the lower corner of the base plate. Thread the leg into the socket until
tight.
3. Repeat with the other three legs.
4. Place the pump and motor combination onto the base plate so that the holes in
the motor foot align with the holes in the base plate. Insert the motor mounting bolts
through the motor foot and base plate.
5. Place a nut on each of the mounting bolts under the base plate and tighten.
6. If a motor cover has been supplied, place it over the pump so that the suction and
discharge connections protrude out of the front cut out.

11
7. Lower the cover over the motor so that the sides of the cover slide over the base
plate.
8. Align the slots in the bottom side of the cover with the corresponding holes in the
side of the base plate. Insert screws through washers and into each hole and tighten.
Level Pump
1. Remove the motor cover if supplied, and place a level on the side of the pump base
next to the motor.
2. Level the pump to within .125 inches (3.2 mm) over length of the pump base and
to within .088 inches (1.5 mm) over the width of the base by turning the legs either
clockwise or counterclockwise.. Make sure the base is not distorted. Replace the motor
cover if supplied.
Note: For portable applications, the level of the pump should be checked and adjusted
after each movement.
Piping
General: Guidelines for piping are given in the “Hydraulic Institute Standards” and
should be reviewed prior to installation.
Warning: Never draw piping into place by using force on the suction and discharge
connections of the pump. This may impose dangerous strains on the unit causing
misalignment, poor operation and physical injury and damage to the equipment.
1. All piping must be supported independently of and line up naturally with the pump
suction and discharge. It MUST NOT place piping loads on the pump.
2. Piping should be no smaller than the pump’s suction and discharge connections and
kept as short as possible, with minimal fittings to minimize friction losses.
3. DO NOT connect piping to pump until pump and/or driver are securely fastened to
a supporting structure.
4. When pumping liquids at elevated temperatures, it is recommended that expansion
loops or joints be used in the suction and discharge piping. Refer to the following
drawings for correct placement to avoid pump strain or misalignment due to linear
expansion of piping.

12
5. The piping should be arranged to permit pump isolation on both the suction and
discharge sides so that the pump can be drained during maintenance and repair.
6. Carefully clean all pipe parts, valves and fittings and pump branches prior to
assembly.
7. All pipe joints MUST be airtight.
Suction Piping
Warning: NPSH available must always exceed NPSH required by the pump. For suction
lifts over 10 feet and liquid temperatures over 120 degrees Fahrenheit, consult the
performance curve for your pump to determine NPSH required.
Properly installed suction piping is a necessity for trouble-free pump operation. Suction
piping should be flushed BEFORE connection to the pump.
1. Use of elbows close to the pump suction should be avoided. There should be a
minimum of two pipe diameters of straight pipe between the elbow and suction inlet.
Where used, elbows should be long radius.
2. Use suction pipe one or two sizes larger than the pump suction, with a reducer at the
suction. Suction piping should never be smaller diameter than the pump suction.
3. Reducers should be eccentric at the pump suction with sloping side down and
horizontal side at the top.

13
4. Suction strainers, when used, must have a net “free area” of at least three times the
suction pipe area.
5. Separate suction lines are recommended when more than one pump is operating
from the same source of supply.
Suction Lift Conditions
1. Suction pipe must be free from air pockets.
2. Suction piping must slope upwards to the pump.
3. All joints must be airtight.
4. A means of maintaining prime, such as a foot valve, must be provided.
5. The suction strainer or suction bell MUST be at least three times the diameter of the
suction
6. Ensure that the size and minimum submergence over the suction inlet is sufficient to
prevent air from entering the pump through a suction vortex.
H min.
DD
H min.
D D
1.5D
min.
3.0D
min.
H min.
D min.
2
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
H = Min. Submergence in feet
H
12345678910111213141516 V
V = Velocity in feet per second
= GPM x 0.321
Area
GPM x 0.4085
D2
Suction Head (Flooded Suction) Conditions
1. An isolation valve should be installed in the suction line at least two pipe diameters
from the suction to permit closing the line for pump maintenance.

14
WARNING: Do not use the isolation/gate valve to throttle the pump as this may cause
loss of prime, excessive temperatures and damage to pump, voiding warranty.
2. Keep suction pipe free from air pockets.
3. Piping should be level or slope gradually downward from the source of supply.
4. No portion of the piping should extend below pump suction.
5. The size of the entrance from the supply should be one or two sizes larger than the
suction pipe.
6. The suction pipe must be adequately submerged below the liquid surface to prevent
vortices and air entrainment at the supply. See above illustrations.
Discharge Piping
1. Isolation and check valves should be installed in the discharge line. Locate the
check valve between the isolation valve and the pump. This will permit inspection of
the check valve. The isolation valve is required for priming, regulation of flow and
for inspection and maintenance of the pump. The check valve prevents pump or seal
damage due to reverse flow through the pump when the driver is off.
2. Increasers, if used, should be placed between the pump and check valves.
3. Cushioning devices should be used to protect the pump from surges and water
hammer if quick closing valves are installed in the system.
Final Piping Check
After connecting the piping to the pump, rotate the motor shaft to make sure that there
is no binding.
Wiring
Warning: Install, ground and wire according to local and National Electrical Code
requirements.
Install an all leg electrical power disconnect switch near the pump.
Disconnect and lockout electrical power before installing or servicing the pump.
Electrical supply MUST match motor’s nameplate specifications. Incorrect voltage can
cause fire, damage the motor and void the warranty.
Motors without built-in protection MUST be provided with contactors and thermal
overloads for single phase motors, or starters with heaters for three phase motors. See
motor nameplate.
Use only copper wire to motor and ground. The ground wire MUST be at least as large
as the wire to the motor. Wires should be color coded for ease of maintenance.
Follow motor manufacturer’s wiring diagram on the motor nameplate or terminal cover
carefully.
Warning: Failure to permanently ground the pump, motor and controls before
connecting to electrical power can cause shock, burns or death.
Rotation
Notice: Incorrect rotation may cause damage to the pump and voids the warranty.

15
Correct rotation is right-hand, clockwise when viewed from the motor end. On three
phase close coupled units, remove motor end plug or cover to observe shaft rotation.
To reverse three phase motor rotation, interchange any two power supply leads.
V. Commissioning, Startup, Operation
and Shutdown
Overview
This section covers the basic procedures to use in preparing your pump for startup,
starting, operating and shutting it down. DO NOT CONTINUE UNTIL ALL PARTS
OF THE INSTALLATION PROCESS (SECTION IV) HAVE BEEN COMPLETED.
Priming
Never start the pump until it has been properly primed. Several different methods of
priming can be used, depending upon type of installation and service involved.
Warning: GSP pumps are not self priming and must be fully primed at all times during
operation. Loss of prime can lead to excessive heat and severe damage to the pump and
seal.
Flooded suction:
1. Slowly open the suction valve.
2. Open air vents on the suction and discharge piping until liquid flows out.
3. Close the vent valves.
Suction Lift:
A foot valve and outside source of liquid may be used to prime the pump. Outside
sources of liquid can come from a priming pump, pressurized discharge line, or other
outside supply.
1. Open the discharge connection.
2. Fill the pump casing and suction pipe with liquid by pouring it into the discharge.
3. When full, reattach the discharge connection.

16
Precautions
Warning: do not operate units without safety guards in place or severe personal injury
may result.
Warning: Splashing or immersing open drip proof motors in fluid can cause fire, shock,
burns or death. Make sure motor guards are in place.
Warning: Operation at or near zero flow can cause extreme heat, personal injury or
property damage.
Starting
1. Make sure suction valve and any recirculation or cooling lines are open.
2. Fully close or partially open discharge valve as dictated by system conditions.
3. Start driver.
Caution: Immediately observe pressure gauges. If discharge pressure is not quickly
attained, stop driver, re-prime and attempt to restart.
4. Slowly open discharge valve until the desired flow is obtained.
Caution: Observe pump for vibration levels, bearing temperature and excessive noise. If
normal levels are exceeded, shut down and resolve.
5. After stabilizing the system at normal operating conditions, check the piping and
adjust supports if needed.
Operation
General considerations:
Caution: Always vary capacity with regulating valve in the discharge line. Never
throttle flow from the suction side.
Caution: Driver may overload if the pumpage specific gravity (density) or viscosity is
greater than originally assumed or the rated flow rate is exceeded.
Caution: Always operate the pump at or near the rated conditions to prevent damage
resulting from cavitation or recirculation.

17
Operating at reduced capacity:
Warning: DO NOT operate pump below minimum rated flows or with suction and
or discharge valve closed. These conditions may create an explosive hazard due to
vaporization of pumpage and can quickly lead to pump failure and physical injury.
Caution: Damage can occur from:
1. Increased vibration levels – affects bearings and mechanical seal.
2. Increased radial loads – Stresses on shaft and bearings.
3. Heat build-up – Vaporization causing rotating parts to score or seize.
4. Cavitation – Damage to internal surfaces of pump.
Operating under Freezing Conditions.
Exposure to freezing conditions while pump is idle could cause liquid to freeze and
damage the pump. Liquid inside the pump should be drained.
Shutdown
1. Slowly close the discharge valve.
2. Shut down and lock the driver to prevent accidental rotation.
Warning: When handling hazardous and or toxic fluids, proper personal protective
equipment should be worn. If pump is being drained, precautions must be taken to
prevent physical injury. Pumpage must be handled and disposed of in conformance with
applicable environmental regulations.
VI. Maintenance
Overview
This section covers the procedures, precautions and schedule for maintenance of your
Goulds pump. A routine maintenance program can extend the life of your pump. Well
maintained equipment will last longer and require fewer repairs.
Warnings
Failure to disconnect and lockout electrical power before attempting any maintenance
can cause shock, burns or death.
Failure to relieve system pressure and drain system before attempting any maintenance
can cause property damage, personal injury or death.
If piping is hazardous or toxic fluids, system must be flushed prior to performing service
involving liquid end disassembly.
Maintenance Schedule
Routine Maintenance
• Bearing lubrication
• Seal monitoring
• Vibration analysis
• Discharge pressure
• Temperature monitoring

18
Routine Inspections
• Check for unusual noise, vibration and bearing temperatures
• Inspect pump and piping for leaks
• Check seal leakage
• Mechanical seal: should be no leakage
3 Month Inspections
• Check the foundation and hold-down bolts for tightness.
• If the pump has been left idle, check the seal and replace if needed.
Annual Inspections
• Check the pump capacity, pressure and power. If pump performance does not
satisfy your process requirements and the process requirements have not changed,
the pump should be disassembled, inspected and worn parts should be replaced.
Otherwise, a system inspection should be done.
Inspection intervals: Inspection intervals should be shortened appropriately if the
pumpage is abrasive or corrosive, or if the environment is classified as potentially
explosive.
Bearing Maintenance
Close coupled units: Bearings are located in and are part of the motor.
Smaller motors used on S1 sizes are equipped with bearings greased for life and need
no maintenance. From frame size 180 onwards motors are equipped with grease nipples
for greasing the bearings. For some motor brand names, the frequency of greasing is
indicated on the nameplate of the motor and must be followed. For motors where this
is not mentioned, it is best to grease every 2000 operating hours when the ambient
temperature is 25 °C. If the ambient temperature is 40 °C, the interval must be halved.
Note: When re-greasing there is danger of impurities entering the bearing housing. The
grease container, the greasing device and fittings must be clean.
Note: The bearing temperature usually rises after re-greasing due to an excess supply
of grease. Temperatures will return to normal after the pump has run and purged the
excess from the bearings, usually two to four hours.
For most operating conditions a lithium based mineral oil grease of NLGI consistency
No. 2 is recommended. This grease is acceptable for bearing temperatures of 5-230
degrees Fahrenheit. Bearing temperatures are generally about 20 degrees higher than
the bearing housing surface temperature.
Caution: Never mix greases of different consistency (NGLI 1 or 3 with NGLI 2) or
different thickener. For example, never mix a lithium base grease with a polyurea base
grease.
Mechanical Seal
Check the mechanical seal for leakage every week. When starting up a new pump, a few
drops of liquid leakage per hour is possible because the seal surfaces need to be run in.
This leakage should fully disappear after ten operating hours. In case of any damage to
the mechanical seal, it should always be replaced, both the stationary part, rotating part
and rubber parts. When opening the pump casing, the pump casing seal should also be
replaced at the same time.

19
Spare Parts
Only use original spare parts to assure reliable operation.
When ordering spare parts, always mention type and serial number of the pump.
Mechanical seals and O-rings are to be kept in a cool and dry space without
temperature fluctuations. It is advisable to have the mechanical seal and O-rings in stock
as a spare part.
Internal Cleaning
GSP pumps are de signed to be CIP-cleanable (cleaning in place). Several tests have
shown they are as cleanable as a tube with the same diameter of the pump and a
roughness Ra = 0.8 µm.
Pumps are used for several liquids. This makes it impossible to give a general valid CIP
cleaning procedure. The efficiency of the cleaning procedure has to be checked during
the validation of the installation in which the pump is incorporated. The following are
some general recommendations.
Warning: It is important to check if the internal seals of the pump are resistant to the
cleaning media. If steam is used during one of the cleaning phases, the pump must not
run at the same time. Check if the elastomers used are steam resistant.
Product expelling phase - With gas (N2in the pharmaceutical industry and CO2in the
bev erage industry) or liquid (water or solvent) the rest of the product can be removed
out of the pump and piping. If the system is blown empty with gas, the pump first must
be switched off to prevent dry running.
Pre-rinse - The pre-rinsing is done with hot solvent or liquid (45 – 55 °C) in the food
industry. In the food industry, hot water prevents the residue hardening (fat), whereas
higher temperatures lead to denaturising of proteins, which are very difficult to remove.
Pulsating the liquid ow (switching on and off the pump) can im prove the cleaning. The
pre-rinsing liquid is nearly always drained. The pre-rinse can be done with tap water
and is very important because it can remove most of the residue.
Cleaning with detergent and alkali - This cleaning has to remove the organic or inor-
ganic dirt based on the chemical or physical action of the detergent. The residue has to
be desolved in the cleaning liquid. The return temperature is normally approximately
75 °C and the lye concentration between 0.5 and 3 %. Most of the residue is loosening
early in this phase. The cleaning can be done with tap water. Since the wash-step is
based on the solution of residue, the temperature of the water and detergent mixture is
very important. If sequentially an alkaline and acid cleaning is used, normally there is a
rinse in between.
Acid cleaning - Acid cleaning is used for removal of inorganic residue and normally only
occasionally necessary. Often, inorganic acids are used with a concentration between
0.5 and 3 %. The temperature is less than 65 °C. Afterwards a rinse is done with
lukewarm water.
After rinse - The reason for the after rinse is to remove all loosened residue and
detergent.
Disinfection - The disinfection reduces the number of toxic micro-organisms to an
acceptable level. However, the disinfection does not guarantee full sterility and is only
sensible after a good cleaning.
After rinse - The after rinse has to be done with germ-free water with a total hardness
below 5 °D (90 mg/l CaCO3). The after rinse water is often used for pre rinse.

20
External Cleaning
The GSP pump is designed to be washed down with detergent spray and rinse. The
built in motor cover and all stainless steel construction allow plant operators to clean
the outside of the pump with the same procedures used for other processing equipment.
The pump legs allow the floor under the pump to be cleaned as well. In order to
meet 3A 2007, pumps need to have no external seams or rough surfaces which could
encourage bacteria growth or make it difficult to clean. The GSP meets these standards.
Disassembly
Required Tools: The following tools should be available for use during pump
disassembly and assembly.
Wrenches, screwdrivers, lifting sling, rubber mallet, snap-ring pliers, torque wrench
with sockets, allen wrenches, cleaning agents, and feeler gauges.
Warning: Pump components can be heavy. Proper methods of lifting must be employed
to avoid physical injury and/or equipment damage. Steel toed shoes must be worn at all
times.
Warning: The pump may handle hazardous and/or toxic fluids. Proper personal
protective equipment should be worn. Precautions must be taken to prevent physical
injury. Pumpage must be handled and disposed of in conformance with applicable
environmental regulations.
Note: Before disassembling the pump for overhaul, ensure all replacement parts are
available.
Warning: Lock out power supply to driver motor to prevent accidental startup and
physical injury.
1. Shut off all valves controlling flow to and from the pump.
2. Drain liquid from piping and flush pump if necessary.
Warning: Allow all system and pump components to cool before handling them to
prevent physical injury.
3. Disconnect all auxiliary piping and tubing.
4. On close coupled pumps, remove motor hold down bolts.
S1 Series
For the replacement of the mechanical seal a 5 % soap solution is needed.
1. Remove casing bolts.
2. Remove back pull-out assembly from casing . On close coupled units, the back pull
out assembly consists of everything but the casing.
3. On close-coupled units, remove the motor end plug or cover to expose a screwdriver
slot or flats on the end of the motor shaft. Some motors may have flats on the drive
end to be held with an open ended wrench.
4. While restraining the shaft with an appropriate tool (close coupled units) unscrew the
impeller counterclockwise from the shaft. Hold the impeller with a soft cloth during this
process to avoid scratches to the surface. Tapping with a rubber mallet is acceptable if
needed to free the impeller threads. Red Loctite is applied in the factory to the threads.
Some heat may be needed to break it free.
5. Remove the rotary seat by carefully sliding it off the impeller.