GE PV411A User manual

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BHGE Data Classification: Public
Druck PV 411A
Pneumatic/Hydraulic Hand-pump
Instruction Manual
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© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | i
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© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 1
Introduction
This manual provides operating instructions for the PV 411A Pneumatic/Hydraulic hand-
pump compatible with the requirements of line operation. The PV 411A supersedes the
PV 411.
Safety
The manufacturer has designed this equipment to be safe when operated using the
procedures detailed in this manual. The user must not use this equipment for any other
purpose than that stated. Only use hydraulic fluids stated in the specification.
This manual contains safety and operating instructions that must be followed to make sure of
safe operation and to keep the equipment in a safe condition. The safety instructions are
either warnings or cautions issued to protect the user and the equipment from injury or
damage.
Users are to check that there is no visible gap or play between the plastic halves of the
PV 411A prior to use. If a visible gap or play is evident, do not use, contact your local Service
Center. See Section 6.2 on page 13 for more details.
Use suitably qualified technicians*and good engineering practice for all procedures in this
manual.
Pressure
Do not apply pressure greater than the maximum safe working pressure stated in the
specification.
Toxic Materials
There are no known toxic materials used in construction of this equipment.
Maintenance
The equipment must be maintained using the procedures in this publication. Further
manufacturer’s procedures should be done by an authorized service agents or the
manufacturer’s service departments.
* A qualified technician must have the necessary technical knowledge, documentation, special test
equipment and tools to carry out the required work on this equipment.

2 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
Technical Advice
For technical advice contact the manufacturer or subsidiary.
Symbols
The following symbols mark this equipment:
Abbreviations
The following abbreviations are used in this publication.
Note: Abbreviations are the same in the singular and plural.
Symbol Description
This symbol, on the equipment, indicates a warning and that the user should refer to the
user manual.
Ce symbole, sur l'appareil, est un avertissement qui indique que l'utilisateur doit
consulter le manuel d'utilisation.
Do not dispose of this product as household waste. Use an approved organization that
collects and/or recycles waste electrical and electronic equipment. For more information,
contact one of these:
- Our customer service department: www.gemeasurement.com
- Your local government office.
Abbreviation Description
°C degrees Celsius
BSP British Standard Pipe thread
cm centimetre
COSHH Control of Substances Hazardous to Health regulations
cSt centi Stoke
°F degrees Fahrenheit
inHg inches of mercury
lb pounds
ISO International Standards Organization
kg kilogram
m metre
mm millimetre
MSDS Material Safety Data Sheet
NPT National Pipe Thread
PRV pressure relief valve
psi pounds per square inch

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 3
1. Introduction
The PV 411A hand-pump generates either pneumatic pressure and vacuum or hydraulic
pressure. The scissor-action handles provide pneumatic pressure and vacuum generation
and, in the hydraulic mode, provides hydraulic pressure generation for system priming.
1.1 Pneumatic Pump (Figure A1)
A selector valve (7) vents the system, to atmosphere, between selections of pressure and
vacuum. Operating the scissor-action handles (5) provides the pumping stroke, for pressure
generation.
A volume adjuster (3) allows small adjustments of the system pressure.
1.2 Hydraulic Pump (Figure A1)
The selector valve (7) vents the system, to the reservoir, between selections of pressure and
vacuum (used in the priming process). The volume adjuster (3) generates the required system
pressure. A fluid reservoir (see Figure A2), screwed into the inlet port (1), marked RESERVOIR,
on the top of the hand-pump completes the hydraulic circuit. A pressure relief valve (8) can
be adjusted to set a pressure between 30 and 700 bar (500 to 10,000 psi).
PTFE polytetrafluoroethylene
SAE Society of Automotive Engineers
UUT Unit under test
Abbreviation Description

4 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
2. Operation
Note: Wherever possible, use o-ring seals in the BSP connection ports this is the
recommended method of sealing.
Key to Figure A1
1. Inlet (reservoir) port
2. Outlet port
3. Volume adjuster
4. Limit adjuster
5. Scissor-action handles
6. Outlet port
7. Selector valve
8. Pressure relief valve (see Figure A3)
2.1 Pressure/Vacuum Configuration (Figure A1)
In pressure mode, air/fluid is drawn in through the inlet port (1) on the top of the pump and
forced out through the two outlet ports (2 and 6).
In vacuum mode, the air/fluid flow is reversed as air/fluid is drawn in through the top and rear
outlet ports (2 and 6) and expelled through the inlet port (1).
WARNING Before applying pressure, make sure all connections are
correct and equipment is internally clean and free from damage.
Make sure that all equipment is to the correct pressure rating.
Do not exceed the maximum operating pressure stated in the specification.
Observe the relevant health and safety precautions.
CAUTION If PTFE tape is used to seal NPT threads, ensure that only a
sufficient amount is used to achieve pressure seal. If excess tape is used,
particles can become loose during the connector mating process and enter
the pump, potentially leading to loss of pump performance or pressure
leaks.

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 5
2.2 Connecting the Pump
Figure 1: Supporting the PV 411A Pressure Port Nut
Connections can be made to the pump either directly or using the range of adaptors supplied
in the optional test kit.
2.2.1 Direct
BSP ports can be fitted with any suitable length ¼ BSP male connector, sealing either with an
o-ring at the bottom of the port or a bonded seal at the top. Fit a suitable blanking plug to an
unused port.
NPT ports can be fitted with any suitable length ¼ NPT male connector. Fit a suitable blanking
plug to an unused port. If PTFE tape is used to seal NPT threads, ensure that only a sufficient
amount is used to achieve pressure seal. If excess tape is used, particles can become loose
during the connector mating process and enter the pump, potentially leading to loss of pump
performance or pressure leaks.
2.2.2 Swivel Adaptors (optional)
The single, ¼ BSP, swivel adaptor connects with a range of fixed adaptors. Using the knurled
grip-feature, hand-tighten (clockwise) the swivel adaptor, until it is fully inserted.
2.2.3 Swivel Pump Head
The pump head swivels through 140° providing optimum viewing angle and bench-top
operation. Placing the pump on the bench allows greater force to be applied to the scissor-
action handles. Internal stops prevent further rotation of the pump head.
Note: Do not use excessive force when rotating the pump head.
WARNING Support the PV 411 pressure port nut when making, or
removing, connections. See Figure 1 for the recommended method of
supporting the PV 411 pressure port nut.

6 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
2.3 Selector Valve
Pressure: Turn the selector valve fully clockwise (in) position (hand-tight).
Vacuum: Turn the selector valve fully counterclockwise (out) position (hand-tight).
Vent: Slowly turn the selector valve to the center position.
2.4 Scissor-action Handles Limit Adjuster (Figure A1)
Turning the limit adjuster (4) clockwise reduces the stroke of the scissor-action handles (5),
turning the limit adjuster (4) counter-clockwise increases the stroke.
For maximum pneumatic pressure generation, turn the limit adjuster fully counter-clockwise.
3. Pneumatic Operation
3.1 Volume Adjuster
The volume adjuster can be used in different modes:
3.1.1 Low Pressure
1. With the selector valve set to vent (open), turn the volume adjuster fully
counterclockwise (out).
2. Turn the selector valve to the fully clockwise (in) position to select pressure.
3. Turn the volume adjuster clockwise to generate pressure.
3.1.2 High Pressure
1. Turn the volume adjuster to the mid-position. In this position fine adjustments of the
generated pressure can be made.
2. Using the scissor-action handles, generate the approximate pressure; then turn the
volume adjuster clockwise (in) to increase the pressure or turn the volume adjuster
counterclockwise (out) to decrease the pressure.
3.1.3 Vacuum
1. Turn the selector valve fully counterclockwise (out) position.
2. Turn the volume adjuster to the mid-position. In this position fine adjustments of the
generated vacuum can be made.
INFORMATION Avoid damaging the instrument under test by using the
volume adjuster to slowly release hydraulic pressure.

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 7
3. Using the scissor-action handles, generate the approximate vacuum; then turn the
volume adjuster clockwise (in) to decrease the vacuum or turn the volume adjuster
counterclockwise (out) to increase the vacuum.
For low vacuum use the volume adjuster only.
3.2 Generating Pneumatic Pressure and Vacuum
(Figure A1)
Connect the pump as detailed in “Connecting the Pump” on page 5.
Note: Compressing a gas generates heat. Gas heated or cooled in an enclosed volume
causes a pressure change. It is important to allow enough time for the heated gas to cool
and the pressure to stabilize.
The pumping required to generate a pressure depends on the volume of the system.
Therefore, keep the system volume to a minimum.
3.2.1 Pressure
1. Turn the selector valve (7) fully clockwise (in) position.
2. Operate the scissor-action handles (5) to generate the approximate pressure, allow
time for thermal stabilization.
3. If necessary, use the volume adjuster (3) to adjust the required pressure.
4. After attaining the required pressure operate the scissor-action handles (5) to
generate a higher pressure. Alternatively, vent the pressure to atmosphere by slowly
turning (counterclockwise) the selector valve (7) to the center position.
5. After completion, depressurize the pump and disconnect from the pipes and
equipment.
3.2.2 Vacuum
1. Turn the selector valve (7) fully counterclockwise (out) position.
2. Operate the scissor-action handles (5) to generate the approximate vacuum, allow
time for thermal stabilization.
3. If necessary, use the volume adjuster (3) to adjust the required vacuum.
4. After attaining the required vacuum operate the scissor-action handles (5) to
generate a higher vacuum. Alternatively, vent atmosphere into the vacuum by slowly
turning (counterclockwise) the selector valve (7) to the center position.
5. After completion, depressurize the pump and disconnect from the pipes and
equipment.

8 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
4. Hydraulic Operation
Note: Wherever possible, use o-ring seals in the BSP connection ports, this is the
recommended method of sealing.
Key to Figure A2
1. Reservoir cover lock nut
2. Reservoir cover
3. O-ring
4. Bleed hole
4.1 Fluid Reservoir (Figure A2)
The main body of the reservoir is transparent acrylic providing a clear view of the contents.
The reservoir can be removed from the pump without the need to empty the fluid, a self-
sealing connection prevents leakage. The spring-loaded reservoir cover (2) seals under
atmospheric pressure conditions, but vents excess internal pressure harmlessly in the event
of inadvertent pressurization.
The reservoir, connects to the inlet port on the top of the pump and supplies fluid to the
pump system for pressure generation.
In vacuum mode, used in priming, the fluid flow is reversed, fluid is drawn from the two outlet
ports and through to the inlet port and the reservoir.
4.2 Fitting
Make sure that the correct o-ring seal (3) is fitted to the inlet port to prevent leakage. Screw
the reservoir (clockwise) into the inlet port marked RESERVOIR.
Note: Demineralized water is used to test the pump at manufacture. On shipment, there
will be traces of demineralized water in the system.
WARNING Observe all safety precautions and procedures stated in local
orders.
CAUTION Do not mix hydraulic fluids.
Only use compatible fluids, refer to the specification.
Only fit appropriate seals on pressure connections.
Damage can be caused if equipment connected to this pump is
contaminated. Avoid particulate contamination.
After use, the pump should be considered contaminated with hydraulic
fluid.

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 9
4.3 Filling
1. Unscrew the reservoir cover lock nut (1) and remove the reservoir cover (2).
2. Using clean, recommended fluid fill the reservoir to approximately 2/3 full.
3. Refit the reservoir cover and re-tighten the reservoir cover lock nut (1).
4. Connect the required pipes and equipment to the outlet ports.
4.4 Priming the System
There are two methods: vacuum priming to extract the air or pre-filling the system.
Note: If air remains in the system, full pressure cannot be achieved as the air in the fluid
compresses. Air must be removed from the system fluid.
Both priming methods require the pump to be held in the vertical position to keep the
reservoir bleed hole (4) in fluid. Do not allow air to enter the system through this bleed hole
(4).
4.4.1 Vacuum Priming (Figure A2)
1. Connect the equipment as detailed in “Operation” on page 4.
2. Air can be removed using the vacuum facility on the pump.
Note: This method should not be used with vacuum-sensitive equipment.
3. Turn selector valve fully out, counterclockwise (vacuum) position.
4. Turn the volume adjuster valve fully counterclockwise (out) position.
5. Pump until bubbles stop appearing in the reservoir, (this generates a vacuum in the
system).
6. Turn the selector valve fully in, (this action releases the vacuum and rapidly fills the
system with fluid from the reservoir). It is advisable to generate a small hydraulic
pressure, then release this pressure and repeat the vacuum priming sequence above
a second time, to verify that any air in the system has been removed.
7. The pump and connected system is ready for use.
4.4.2 Pre-filling
1. Connect the equipment as detailed “Operation” on page 4.
2. Turn the selector valve fully clockwise (in) position.
3. Loosen the reservoir cover lock nut (1) to open the reservoir cover (2) and let
atmospheric pressure into the top of the reservoir.
4. Open the bleed valve on the UUT.
5. Carefully operate the scissor-action handles to fill the system. Stop pumping when
fluid comes out of the bleed valve.
6. Close the bleed valve on the UUT.
7. If necessary, top-up the reservoir to the 2/3 level with clean fluid.
8. Secure the reservoir cover by tightening the reservoir cover lock nut (1).

10 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
9. The pump and connected system is ready for use.
4.5 Generating Hydraulic Pressure (Figure A1)
Note: Pressurizing a fluid generates heat. A fluid heated or cooled in an enclosed volume
causes a pressure change. Allow enough time to thermally stabilize.
1. If necessary, set the PRV see following section.
2. Open the selector valve (7) counterclockwise 1 turn.
3. Screw the volume adjuster (3) fully out (counterclockwise).
4. Close the selector valve (7).
5. Use the scissor-action handles (5) to generate the initial pressure.
6. Then turn the volume adjuster (3) clockwise to generate the required pressure, allow
time for thermal stabilization.
7. To reduce the pressure, turn the volume adjuster (3) out (counterclockwise) to the
required pressure.
8. After completion, turn the volume adjuster (3) fully out (counterclockwise) and turn
the selector valve (7) to depressurize the pump. Disconnect from the pipes and
equipment.
4.6 Setting Pressure Relief Valve (Figure A3)
The pressure relief valve (PRV) can be set at pressures from 30 to 700 bar (500 to 10,000 psi).
If the system pressure exceeds the set pressure, the PRV opens and vents fluid through the
inlet port to the reservoir. When the system pressure decreases below the set pressure, the
PRV closes.
Key to Figure A3
1. PRV locking screw (quantity 2)
2. PRV lock nut (with left-hand thread)
3. PRV adjusting nut (with left-hand thread)
4.6.1 To set the PRV:
1. Connect a suitable pressure indicator to either outlet port (Figure A1) (2) or (6). Fit a
blank to the unused port.
2. Increase pressure until the relief valve operates.
3. Loosen the two PRV locking screws (1).
4. Loosen the PRV lock nut (2) by turning clockwise.
5. Set the relief pressure by turning the PRV adjusting nut (3).
CAUTION Do not exceed 700 bar (10,000 psi). This can damage the
internal seals of the PRV and the PV 411A

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 11
To increase pressure: Turn the PRV adjusting nut (3) counterclockwise.
To decrease pressure: Turn the PRV adjusting nut (3) clockwise.
6. After setting the PRV, hold adjusting nut (3) in position and tighten the locking nut (2).
Note: The locking nut has a left-hand thread.
7. Check the operation of the PRV. If necessary reset the PRV.
8. Secure the locking nut by tightening the two locking screws (1).
4.7 Fault Finding
If the system pressure reduces, check the following:
1. Check the selector valve (Figure A1) (7) is in the correct position and properly
tightened.
2. Allow sufficient time after pressure generation for the temperature to stabilize. The
larger the system volume, the longer the time for thermal stability.
3. Check the adaptors, flexible pipe and connections between the pump and equipment
under test for leaks. Tighten any loose joints and replace any seals that are worn or
damaged.
4. In hydraulic mode, if the volume adjuster can be wound fully in, but maximum
pressure cannot be achieved, or, if pressure can be achieved, but an initial slow
reduction appears to be present, there is probably air trapped in the system. Without
disconnecting any pump or DUT connections, Re-prime using the vacuum priming
method and repeat.
5. Check PRV pressure setting.
If, for any reason, a fault occurs within the pump, it is recommended that the equipment be
returned to an appointed agent.

12 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.
5. General Specification
6. Returned Goods Procedure
If the unit requires calibration or is unserviceable, return it to the nearest GE Service Centre
listed at: www.gemeasurement.com
Contact the Service Department to obtain a Return Authorization (Worldwide excluding
USA).
In the USA, obtain a Return Material Authorization [RMA].
Provide the following information on either a RGA or RMA:
• Product (i.e. PV 411A)
• Pressure medium (i.e. pneumatic, hydraulic)
• Serial number
• Details of defect/work to be undertaken
• Operating conditions
INFORMATION Hydraulic fluids must be compatible with stainless
steel, anodized aluminum, nitrile rubber, PTFE, polypropylene, Delrin,
acrylic and nylon.
Item Specification
Pneumatic Pressure Range 0 to 60 bar (0 to 600 psi)
Vacuum Pressure Range 0 to -0.95 bara(0 to 28.5 inHg)a
a. This value assumes atmospheric pressure at 1 bar (14.5 psi) and varies depending on atmospheric pressure.
Hydraulic Pressure Range 0 to 700 bar (0 to 10,000 psi)
Maximum Safe Working Pressure 700 bar (10,000 psi)
Pressure Connections ¼” BSP parallel female (¼” NPT female in USA)
Maximum Hydraulic Fluid Viscosity 150 cSt at 40°C (104°F)
Recommended Hydraulic Fluids De-mineralized water or mineral-based oils (SAE 40W, ISO
viscosity grade 150)
Dimensions (Length x Width x Depth) 260 mm (10.2”) x 150 mm (5.3”) x 100 mm (3.7”)
Weight (approximate) 1.2 kg (2.5 lb)

© 2000 Baker Hughes, a GE company – All rights reserved. PV 411A Instruction Manual-English | 13
6.1 Safety Precautions
You must inform GE if the product has been in contact with any hazardous or toxic substance.
The relevant COSHH or in the USA, MSDS, references and precautions to be taken when
handling.
6.2 Approved Service Agents
For the list of service centers:
www.gemeasurement.com
INFORMATION Service by unauthorized sources will affect the
warranty and may not guarantee further performance.

14 | PV 411A Instruction Manual-English © 2000 Baker Hughes, a GE company – All rights reserved.