Circor HOUTTUIN TT Twin-Screw Instruction manual

TT Twin-Screw Pump
Installation, Operation
& Maintenance

Table of Contents
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
Table of Contents
Introduction and Safety.........................................................................................................3
Introduction ........................................................................................................................3
Safety.................................................................................................................................3
Safety terminology and symbols........................................................................................4
Environmental safety .........................................................................................................5
User safety.........................................................................................................................6
Ex-approved products........................................................................................................8
Product warranty..............................................................................................................15
Transportation and Storage................................................................................................16
Inspect the delivery..........................................................................................................16
Inspect the package ......................................................................................................16
Inspect the unit..............................................................................................................16
Transportation guidelines.................................................................................................16
Pump handling and lifting..............................................................................................16
Storage guidelines ...........................................................................................................18
Long-term storage.........................................................................................................18
Product Description ............................................................................................................20
General description..........................................................................................................20
Nameplate information.....................................................................................................22
Installation...........................................................................................................................24
Pre-installation .................................................................................................................24
Pump location guidelines ..............................................................................................24
Foundation requirements ..............................................................................................25
Baseplate-mounting procedures......................................................................................26
Prepare the baseplate for mounting..............................................................................26
Prepare the foundation for mounting.............................................................................27
Install the baseplate ......................................................................................................27
Install the pump, driver, and coupling..............................................................................28
Pump-to-driver alignment.................................................................................................28
Alignment checks ..........................................................................................................29
Allowable dial indicator values for alignment checks....................................................30
Calculate the thermal expansion...................................................................................30
Alignment measurement guidelines..............................................................................32
Attach the dial indicators for alignment .........................................................................32
Perform angular alignment for a vertical correction ......................................................33
Perform angular alignment for a horizontal correction..................................................33
Perform parallel alignment for a vertical correction.......................................................34
Perform parallel alignment for a horizontal correction...................................................35
Perform complete alignment for a vertical correction....................................................36
Perform complete alignment for a horizontal correction ...............................................36
Grout the baseplate .........................................................................................................37
Perform a final “soft foot” check .......................................................................................38
Pump Piping.....................................................................................................................39
General piping requirements and checklist...................................................................39
Suction-piping checklist.................................................................................................41
Discharge piping checklist.............................................................................................43
Auxiliary-piping checklist ...............................................................................................43

Table of Contents
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
Final piping checklist .....................................................................................................44
Commissioning, Startup, Operation & Shutdown...............................................................45
Preparation for startup.....................................................................................................45
Check the rotation............................................................................................................46
Couple the pump and driver ............................................................................................47
Bearing lubrication ...........................................................................................................48
Oil volume requirements ...............................................................................................49
Lubricating-oil requirements..........................................................................................49
Lubricate the bearings with oil & grease .......................................................................49
Lubricate the gear/bearings after a shutdown period....................................................50
Shaft sealing with a mechanical seal...............................................................................50
How to prime the pump with the suction supply above the pump ...................................51
Start the pump .................................................................................................................51
Pump operation precautions............................................................................................52
Shut down the pump........................................................................................................53
Make the final alignment of the pump and driver.............................................................54
Dowelling the driver (Optional) ........................................................................................55
Maintenance .......................................................................................................................56
Maintenance schedule.....................................................................................................56
Bearing maintenance.......................................................................................................57
Mechanical-seal maintenance.........................................................................................57
Disassembly........................................................................................................................58
Disassembly precautions.................................................................................................58
Tools required..................................................................................................................58
Prepare for disassembly..................................................................................................59
Disassembly of the two-piece bracket pump (standard)..................................................59
Preassembly inspections .................................................................................................61
Replacement guidelines................................................................................................61
Screw shaft replacement guidelines .............................................................................64
Bearings inspection.......................................................................................................65
Reassembly of the two-piece bracket pump (standard) ..................................................66
Spare parts....................................................................................................................71
Minor Kit ........................................................................................................................71
Major Kit ........................................................................................................................71
Troubleshooting..................................................................................................................72
Operation troubleshooting................................................................................................72
Alignment troubleshooting ...............................................................................................74
Supplemental assembly information...................................................................................75
Maximum torque values for fasteners..............................................................................75
Recommended torqueing sequence for bolted joints ......................................................76

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 3
Introduction and Safety
Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
•Installation
•Operation
•Maintenance
CAUTION:
Failure to observe the instructions contained in this manual could result in personal injury and
property damage and may void the warranty. Read this manual carefully before installing and
using the product.
NOTICE:
Save this manual for future reference and keep it readily available.
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 CIRCOR 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 the pumped fluid and take appropriate safety precautions
to prevent physical injury
•Risk of serious injury or death. If any pressure-containing device is over-pressurized, it
can explode, rupture, or discharge its contents. It is critical to take all necessary measures
to avoid over-pressurization.
•Risk of death, serious personal injury, and property damage. Installing, operating, or
maintaining the unit using any method not prescribed in this manual is prohibited.
Prohibited methods include any modification to the equipment or use of parts not provided
by CIRCOR. If there is any uncertainty regarding the appropriate use of the equipment,
please contact an CIRCOR representative before proceeding.
•Risk of serious personal injury. Applying heat to parts with internal cavities or reliefs can
cause trapped liquid to rapidly expand and result in a violent explosion. This manual
clearly identifies accepted methods for disassembling units. These methods must be
adhered to. Never apply heat to aid in part removal unless it is explicitly stated in this
manual.

Introduction and Safety
4 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
•If the pump or motor is damaged or leaking, electric shock, fire, explosion, toxic release,
physical harm, or environmental damage may result. Do not operate the unit until the
problem has been corrected or repaired.
•Risk of serious personal injury or property damage. Dry running may cause rotating parts
within the pump to seize to non-moving parts. Do not run dry unless the pump is
specifically supplied to support a dry run condition.
•Risk of death, serious personal injury, and property damage. Heat and pressure buildup
can cause explosion, rupture, and discharge of the pumped fluid. Never operate the pump
with discharge and/or suction valves closed.
•Running a pump without safety devices exposes operators to risk of serious personal
injury or death. Never operate a unit unless appropriate safety devices (pressure relief
valves, guards, etc.) are properly installed. See specific information about safety devices
in other sections of this manual.
CAUTION:
Risk of injury and/or property damage. Operating a pump in an inappropriate application can
cause over pressurization, overheating, and/or unstable operation. Do not change the service
application without the approval of an authorized CIRCOR representative.
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
Hazard levels
Hazard level
Indication
A hazardous situation which, if not avoided,
will result in death or serious injury
A hazardous situation which, if not avoided,
could result in death or serious injury
A hazardous situation which, if not avoided,
could result in minor or moderate injury
NOTICE:
A potential situation which, if not avoided,
could result in undesirable conditions or
equipment damage
A practice not related to personal injury
DANGER:
CAUTION:
WARNING:

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 5
Hazard categories
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 allow early discovery of any emissions due to a malfunction.
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.
WARNING:
If the product has been contaminated in any way, such as from toxic/flammable chemicals or
biological agents do NOT send the product to CIRCOR unless it has been properly
decontaminated.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
Recycling guidelines
Always follow local laws and regulations regarding recycling.

Introduction and Safety
6 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
User safety
General safety rules
These safety rules apply:
•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 risks of electric shock or arc flash hazards.
•Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
•If operating temperatures exceed 140o F (60o C), measures must be taken to avoid skin
contact
Safety equipment
Use safety equipment according with the company regulations. Use this safety equipment
within the work area:
•Protective helmet
•Safety goggles, preferably with side shields
•Protective shoes
•Protective gloves
•Gas mask
•Hearing protection
•First-aid kit
•Safety devices
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.
Precautions before work
Observe these safety precautions before you work with the product or are 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 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 inspected and in good condition.
•Use a lifting harness, a safety line, and a breathing device as required.
•Allow all system and pump components to cool before you handle them.
•Make sure that the product has been thoroughly cleaned.
•Disconnect and lock out power before you service the pump.
•Check the explosion risk before you weld or use electric hand tools.

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 7
Precautions during work
Observe these safety precautions when you work with the product or are in connection with
the product:
CAUTION:
Failure to observe the instructions contained in this manual could result in personal injury and
property damage and may void the warranty. Read this manual carefully before installing and
using the product.
•Always wear the appropriate PPE.
•Never work alone.
•Stay well clear of suspended loads.
•Always lift the product by its lifting device(s).
•Beware of the risk of a sudden start if the product is used with an automatic control.
•Rinse the components in water or a solvent as directed after you disassemble the pump.
•Never exceed the maximum working pressure of the pump.
•Never disable, remove or bypass the pump safety pressure relief valve
•Do not open any vent or drain valve or remove any plugs while the system is pressurized.
Make sure that the pump is isolated from the system and that pressure is relieved before
you disassemble the pump, remove plugs, or disconnect piping.
•Never operate a pump without a properly installed coupling guard.
•The coupling guard used in an ATEX classified environment must be constructed from
a non-sparking material.
Airborne Noise
Airborne Noise of the pump is dependent on the application parameters and where it
exceeds 70 dB(A) appropriate safety measures must be taken to prevent injury. The specific sound
pressure level of each pump is included in a datasheet provided to the customer along with this
manual.
Hazardous liquids
The product is designed for use in liquids that can be hazardous to your health. Observe
these rules when you work with the product:
•Make sure that all personnel who work with biologically hazardous liquids are vaccinated
against diseases to which they may be exposed.
•Observe strict personal cleanliness.
•A small amount of liquid will be present in certain areas like the seal chamber and
cavities which cannot be fully drained due to the pump geometry.

Introduction and Safety
8 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
Wash the skin and eyes
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
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.
Chemicals or hazardous
fluids on skin
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
These additional instructions apply to applications where Pumps have been evaluated for use in potentially
explosive atmospheres according to Directive 2014/34/EU (ATEX) and are additional requirements to the
Safety and Operation, Installation, General Maintenance and Troubleshooting sections of this manual.
Section Contents:
Section 1 –For Your Safety (Proper Use, Operators Obligations, Materials and Liquids)
Section 2 –Explosion protection labeling (Explosion protection marking for group II category 2 and 3)
Section 3 –Installation and commissioning (Category 2 and 3).
Section 4 –Points to note during operation of pump (Operation, Maintenance, Additional measures for dust)
1. For Your Safety:
Pump is manufactured in accordance with latest state-of- the-art safety regulations. However, danger to
life and limb of user and third parties and damages to pump can arise during operation. To ensure optimal
and safe operation of pump, maintenance must be carried out by appropriately qualified expert personnel.
Work on electrical equipment must be carried out by authorized electricians in accordance with respective
national standards and electrical technology guidelines.
1.1 Operators Obligations
•Evaluate and document the location, where the system is to be operated, and dangers from
explosions in accordance with directive Evaluate and document the operating areas of the system
for danger of explosions in accordance with Directive 99/92/EC, Annex I.
•Ensure that directive 99/92/EC, to protect the health and safety of the employee in potentially
explosive atmospheres, is maintained.
•Only use the pump as allowed by the explosion protection nameplate.
•Always ensure the following.

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 9
-The pump is grounded.
-There is no contact between the coupling and coupling guard
-Pump interior, seal chamber, auxiliary systems, inlet and outlet piping, are always completely
filled with the liquid being pumped.
-The maximum permissible surface temperature of the pump is not exceeded.
-The maximum permissible fluid medium temperature is not exceeded (see 2.3)
-Valves on the inlet and outlet of the pump are set correctly.
-The pump has regular maintenance and monitoring.
-It is impossible for the pump to run dry i.e, by monitoring tank levels, flow measurements, etc.
•Ensure that the motors, couplings, gears and monitoring equipment supplied on site correspond to
the category and temperature class of the associated zone.
•Note the information on order data sheet
•Inform personnel regarding special dangers
- Danger of explosions through removal of dust buildup
•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).
•CIRCOR disclaims all responsibility for work done by untrained and unauthorized personnel.
•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 CIRCOR representative.
•Only use parts that are provided by an authorized CIRCOR representative.
1.2 Materials:
All pump parts and accessories must consist of electrically conductive materials.
With combustible pumped liquids, all pressure bearing parts must be of ductile material from internal
pump pressures of 145 psi (10 bar) or greater.

Introduction and Safety
10 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
2. Explosion Protection Labeling
2.1 Temperature class and type of explosion protection marking are on nameplate.
II 3G Ex h IIC T4...T1 Gc X
___________________________ CE Label
___________________________ Symbol for explosion protected equipment
II _____________________________ Equipment group per Directive 2014/34/EU is other than
underground
3______________________________ Equipment Category (section 2.2 below)
G______________________________ Explosion Atmosphere (G = Gas)
h ______________________________Ignition protection reference (see 2.4 below)
T4...T1__________________________Temperature class (see 2.3 below for Special Use Conditions)
X______________________________ Ambient Temperature (see 2.5 below for Special Use Conditions)
2.2 Category
Category 2 - The frequency of occurrence of dangerous potentially explosive atmospheres is only
occasional (any faults occurring must not become a source of ignition)
Category 3 - The frequency of occurrence of dangerous potentially explosive atmospheres is
unlikely and can occur only rarely and for a short time
1. The pump guarantees a normal level of protection.
2. No unacceptable high surface temperatures may become an ignition risk during normal operation.

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 11
2.3 Temperature Class –Flammable gases and vapors are divided into temperature classes for their
flammability on hot surfaces. Surface temperature of pump must always be less than lowest ignition
temperature in the temperature class.
Classification of maximum surface temperature for Group II Equipment
Temperature Class on
Accordance with EN 80079-36
Maximum Surface Temperature
T4
275°F (135 °C)
T3
392°F (200 °C)
T2
572°F (300 °C)
T1
842°F (450 °C)
Special Use Condition- Marking T4...T1
The maximum surface temperature depends on operating conditions. Refer to the Declaration
of Conformity for T code and Maximum Fluid Temperature indicated.
Special Use Condition –In certain pumps with mechanical seals the maximum permissible
medium temperature must not be exceeded. Refer to the Declaration of Conformity for the
maximum permissible medium temperature.
2.4 Ignition Protection Reference:
Type of Protection for non-electrical equipment
Meaning
b
Ignition source monitoring for category 2 applications
c
Safe design constructional safety
h
Mark for non-electrical equipment (not a protection
method)
2.5 Ambient Temperature:
Special Use Conditions-
The pumps conform to the ambient temperature service range specified by the application
parameters provided by the customer. Please refer to the Declaration of Conformity for the
ambient temperature range. If no range is provided, the normal ambient temperature of -20 oC
< Ta < +40 oC applies.

Introduction and Safety
12 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
3) ATEX Measures
3.1 Installation and connection of pump (Measures depend upon category.)
3.1.1 Category 3
1 Stay within the maximum permissible temperature of the pumped fluid on the order data sheet.
2 Prevent overheating when operating in a circulating system by routing the return line from the
safety valve to the tank not into the suction pipe
3 For couplings with coupling guards:
a. Only use guards made from electrically conductive materials
b. Secure the setscrews to fix the coupling halves to the guards with medium strength
thread retaining compound.
c. For aluminum guards, remove swarf and dirt from coupling guard
4 Ignition protection type is c = structural safety. (No additional monitoring equipment is required.)
5 For Pumps with motors supplied by the operator, motors must correspond to the requirements in
the explosion hazard area (group and category).
6 Earthing Terminals must be provided for pump units, including base plate and motor.
3.1.2 Category 2
1 Ensure there is monitoring equipment to prevent dry running. (ex. Tank level switch)
This equipment shall have a suitable level of reliability and installed with established safety
principles able to withstand expected influences during operation. This equipment shall provide
adequate warning that dry running can develop, must be capable of being checked at suitable
intervals and include the detection of loss of safety function. The equipment manufacture’s use
instructions shall specify the interval between periodic maintenance checks and include advise on
methods for detecting failure modes and actions to be taken to remedy. (Ref. EN 80079-37
Clause 6.5.1)
2 Ensure there is monitoring equipment to avoid overheating.
-If the system controller in not suitable for monitoring, install power monitor.
-Set monitoring according to:
The pumping parameters
The characteristic curve of the pump
The motor manufacturers’ specifications

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 13
3 If pumped fluid is contaminated with solid particles:
a. Install temperature sensor on case surface
b Adjust temperature monitoring device according to the manufacturer’s specifications and to
the maximum allowable temperature of the housing surface by its temperature class.
4 For pumps with separate relief valves:
a Install a pressure relief valve in the pressure line and adjust it accordingly
b. Provide a return line into the tank
3.2 Operation
3.2.1 Stay within the maximum permissible surface temperature
Pumped liquid
Stay within the maximum permissible temperature on the order data sheet
Housing surface (Only relevant to category 2)
If the pumped liquid is contaminated with solid particles, monitor the temperature of the case surface
so that maximum permissible temperature of the housing surface does not go higher than permissible
by the temperature class on the nameplate.
3.2.2 Avoid Overheating (Only relevant to category 2)
Overheating results from the impermissible operating conditions of:
a. Dry Running
b. Operating pump while the pressure side valve is closed.
c. Operating pump while inlet side valve is closed
d. Operating outside the pumps design parameters
Monitor motor power to detect the above problems with overheating.
3.2.3 Do not operate in an explosive atmosphere. (Only relevant to category 2)
If an explosive atmosphere occurs, switch off pump

Introduction and Safety
14 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
3.3 Maintenance (Reduce maintenance intervals for more difficult operating conditions.)
3.3.1 Maintenance to perform
1. Check at appropriate intervals:
-Motor and pump couplings according to manufacturer’s operating instructions
-Deformation of guard around coupling and spacing to rotating parts
-Functioning of monitoring devices
-Surface temperature of pump and motor
-Entire unit for excess vibrations
-Pump during operation for altered running noises
-
2. Change at appropriate intervals:
a. Change seal when leakage exceeds 5 drops per hour.
b. Change Spherical roller bearings every 25000 hours if found to be overheating or noisy.
c. Add grease as per SKF every >2000 hours minimum if found to be overheating.
4. Additional measures for category 2
1. Periodically remove dust build up before thickness gets to 5 mm.
2. Remove swarf and dirt from on and below the coupling guards.
Monitoring equipment
For additional safety, use condition-monitoring devices. Condition-monitoring devices include
but are not limited to these devices:
•Pressure gauges / transducers / switches
•Flow meters / switches
•Level indicators / transducers / switches
•Motor power measurement
•Temperature indicators / transducers / switches
•Vibration transducers / switches
•Leak detectors / switches
•Suction filter(s)

Introduction and Safety
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 15
Product warranty
Coverage
CIRCOR undertakes to remedy faults in products from CIRCOR under these conditions:
•The faults are due to defects in design, materials, or workmanship.
•The faults are reported to a CIRCOR 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 CIRCOR-authorized personnel.
•Genuine CIRCOR parts are used. Only Ex-approved spare parts and accessories
authorized by CIRCOR are used in Ex-approved products.
Limitations
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
CIRCOR
•Incorrectly executed repair work
•Normal wear and tear
CIRCOR assumes no liability for these situations:
•Bodily injuries
•Material damages
•Economic losses
Warranty claim
CIRCOR products are high-quality products with expected reliable operation and long life.
However, should the need arise for a warranty claim, then contact your CIRCOR
representative.

Transportation and Storage
16 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
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.
4. 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
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:
Dropping, rolling or tipping units, or applying other shock loads, can cause property damage
and personal injury. Ensure that the unit is properly supported and secure during lifting and
handling.
CAUTION:
Risk of injury or equipment damage from use of inadequate lifting devices. Ensure that all
lifting devices such as chains, straps, lifting beams, fixtures, forklifts, cranes, etc. are rated to
a sufficient capacity.

Transportation and Storage
TT Twin-Screw Pump - Installation, Operation & Maintenance Manual 17
Precautions for lifting the pump
WARNING:
Dropping, rolling or tipping units, or applying other shock loads, can cause property damage
and personal injury. Ensure that the unit is properly supported and secure during lifting and
handling.
Risk of serious personal injury or equipment damage. Proper lifting practices are critical to
safe transport of heavy equipment. Ensure that practices used are in compliance with all
applicable regulations and standards.
Lifting and handling heavy equipment poses a crush hazard. Use caution during lifting and
handling and wear appropriate Personal Protective Equipment (PPE, such as steel-toed
shoes, gloves, etc.) at all times. Seek assistance if necessary.
Safe lifting points are specifically identified in this manual. It is critical to lift the equipment only
at these points. Unless otherwise indicated on the GA or Outline drawing, integral lifting eyes
or eye bolts on pump and motor components are intended for use in lifting the individual
components only.
Transportation and Storage
NOTICE:
Make sure that the lifting equipment supports the entire assembly and is only used by
authorized personnel.
Do not attach slings, chains or ropes to shaft ends.
Lifting the pump
If the pump is equipped with lifting eyes AND these are specifically identified on the pump GA
or outline drawing as suitable for lifting the pump then proceed as follows: Lift the pump as
shown in Figure 1 below, using suitable slings, ropes or chains attached to the lifting eyes.
Figure 1: Example of the proper lifting method for a bare pump

Transportation and Storage
18 TT Twin-Screw Pump - Installation, Operation & Maintenance Manual
Baseplate-mounted units have lifting points for use with proper lifting devices. These lifting
points should be utilized as instructed on the unit GA or outline drawing
Figure 2: Example of the proper lifting method for baseplate-mounted units with a driver
Storage guidelines
Long-term storage
Units are shipped on skids and suitably boxed or crated to prevent damage from normal
handling. All exterior, unpainted surfaces subject to corrosion are coated with a rust preventive
compound. Pump openings are covered with blank flanges or special covers.
A packing list is furnished itemizing the contents of the shipment. When received, check the
contents against the packing list. Report any discrepancies to CIRCOR or your local CIRCOR
distributor immediately.
If pump is not to be immediately installed and operated and will be stored for more than 6
months, or if pump is not to be operated for some time after installation, the unit must be cared
for as follows: