Baker Hughes PV211 Manuel D'instructions page 6

2.3 Fine Adjust Vernier (Figure A1)
INFORMATION
NOT use force to turn the fine adjust
vernier (2) farther than the red line indicator
on the thread. See item 11 in Figure A2.
To make accurate adjustments to the pressure, turn the
fine adjust vernier (2) clockwise to increase the pressure or
counterclockwise to decrease the pressure.
2.4 Pressure/Vacuum Selector (Figure A1)
Before you change the mode, make sure that the pressure
release valve (1) is open. To change the mode, use an
applicable tool to push the selector (3) to the side specified
on the label.
2.5 Overpressure Protection (Figure A1)
To adjust the maximum output pressure of the system, turn
the nuts (8) to increase or decrease the stroke length.
3. Operation
WARNING
Uncontrolled release of high
pressure is dangerous and may cause
damage to equipment. Because the internal
pressure can get very high during operation,
make sure that all the connections are made
correctly.
DO NOT ignore the maximum operating
pressure specified on the pump label.
Before you connect a pressure component to
the PV211, make sure that it is isolated from
the pressure supply and release the internal
pressure slowly. DO NOT connect the pump to
an external pressure source.
3.1 Calibration/Comparison against an
Analog Gauge
1. Connect a reference instrument to the pressure port at
the top of the pump (9).
2. Connect the instrument under test to the connection at
the end of the flexible hose (5).
Note: The maximum torque for the adaptors is 15 Nm
(11 ft lb).
3. Set the fine adjust vernier (2) to the midpoint of its
travel:
Turn it fully clockwise, then four to six turns
counterclockwise.
4. Close the pressure release valve (1):
Turn it fully clockwise, and tighten to seal.
5. Operate the scissor handles (7) until the pressure is
almost correct. To get the maximum pressure output,
squeeze the handles fully together on each stroke.
6. To adjust the pressure to the correct value, turn the fine
adjust vernier (2) clockwise to increase the pressure or
counterclockwise to decrease the pressure.
INFORMATION
NOT use force to turn the fine adjust
vernier (2) farther than the red line indicator
on the thread. See item 11 in Figure A2.
Note: Initially, small pressure changes can occur
(thermodynamic effects, the seals settle, the hoses
expand). The pressure will stabilize after a short time.
7. You can also decrease the pressure by careful
operation of the pressure release valve (1).
Copyright 2005 Baker Hughes Company.
2 | PV211 Instruction Manual–English
To prevent damage, DO
To prevent damage, DO
8. To get a vacuum, set the pressure/vacuum selector (3)
to the vacuum position (as indicated on the pump label)
then use the same procedure as above.
Note: Before you change the mode, release the
pressure.
3.2 Operation with a High-Resolution
Pressure Calibrator
Because the resolution is better, it is possible you will see
more of the small pressure changes identified in step 6
above.
Note: On very high resolutions such as 1 mbar or
0.1 inH O, small movement of the hose may result in
2
noticeable pressure changes.
4. Fault Finding
1. If the system appears to lose pressure, repeat the
above procedure. Make sure: there is no damage to the
seals, the adapters are tightened sufficiently, the
pressure release valve (1) is tightened sufficiently to
seal.
2. Do not try to tighten the connections between the pump
and the fine adjust vernier (2) or between the pump and
the quick-fit connectors (4). These are factory set and
changes can cause damage to the sealed joints.
3. During leak tests, small air movements (in or out) are
possible around the pressure/vacuum selector (3).
This is normal.
4. If the PV211 has not been used for a period of time, it
can be difficult to operate on the first stroke. It will
become free after this.
5. For seal replacement refer to the service kit
instructions.
If, for any reason, a fault occurs within the pump, it is
recommended that the equipment be returned to an
appointed agent.
5. General Specification
INFORMATION
compatible with stainless steel, bright nickel
plated brass, anodized aluminum, phosphor
bronze (springs), nitrile rubber seals and
nylon.
Item Specification
Pneumatic Pressure 0 to 40 bar (0 to 600 psi)
Range
Vacuum Pressure Range 0 to -0.95 bar
Leak rate at maximum 0.05 bar/min
pressure.
(0.73 psi/min)
Leak rate at maximum 0.006 bar/min
vacuum.
(0.087 psi/min)
Dimensions (Length x 220 mm (8.7") x 105 mm (4.1") x
Width x Depth) 63 mm (2.5")
Weight (approximate) 0.65 kg (1.4 lb)
a. This value assumes atmospheric pressure at 1 bar (14.5 psi) and
varies depending on atmospheric pressure.
6. Returned Goods Procedure
If the unit requires calibration or is unserviceable, return it
to the nearest Druck Service Centre listed at:
https://druck.com/service.
Pneumatic gases must be
(0 to -28 inHg)
a a