Test Pump
Prüfpumpe
Operating Instructions
Betriebsanleitung
GB
D
Typ CPP30
Test Pump CPP30
Test Pump
CPP30
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Operating Instructions Test Pump |
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Betriebsanleitung Prüfpumpe |
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11044608.02 07/2006 D/GB
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WIKA BetriebsanleitungWIKAOperatingHaInstructionsd-Held ThermometerTest Pump |
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11044608.02 07/2006 D/GB
Test Pump
CPP30
Contents |
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1. |
Safety Instructions |
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2. |
Product Description |
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Mounting Instructions |
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4. |
Operation of the Test Pump |
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4.1 Generation of pressure |
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4.2 Generation of vacuum |
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Maintenance Instructions |
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Cause of fault |
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7. |
Technical Data |
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8. |
Order Data / Accessories |
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Information
This symbol provides you with information, notes and tips.
Warning!
This Symbol warns you against actions that can cause damage to persons or to the instrument.
WIKA BetriebsanleitungOperating InstructionsHandTest-HeldPumpThermometer |
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Test Pump
CPP30
GB |
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1. |
Safety Instructions |
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Read these operating instructions carefully prior to operating |
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the pneumatic hand test pump CPP30. The pressure inside the |
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pump can be extremely high. Ensure that all pressure connec- |
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tions have been established correctly. |
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2. |
Product Description |
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Test pumps are used to generate pressures for checking, adjusting and calibrating mechanical and electronic pressure measuring instruments by comparative measurements. These pressure tests may be carried out in laboratories, workshop or on site at the measuring point.
If the instrument to be tested and a sufficiently accurate referencemeasuring instrument are connected up to the test pump, the same pressure is applied to the two measuring instruments when the pump is operated. By comparing the two measured values at random pressure values, the accuracy can be verified or the Instrument under test can be adjusted.
Despite its compact dimensions, the hand test pump model CPP30 is easy to operate and allows for exact generation of the required test pressures; a change-over switch enables the generation of vacuum as well. The pump is fitted with a fine adjustment valve for the precise adjustment of pressures. The reference instrument is screwed directly on to the top of the pump and the unit under test is connected by means of the connection tube incorporating an adapter 1/4" BSP female thread, contained in the scope of delivery.
11044608.02 07/2006 D/GB
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WIKA BetriebsanleitungWIKAOperatingHaInstructionsd-Held ThermometerTest Pump |
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Test Pump
CPP30
3. Mounting Instructions |
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The reference instrument is fitted to the upper side of the hand test pump CPP30. Fingertight fastening of the reference instrument with the knurled nut is sufficient. The reference instrument is sealed by the integral O-ring sealing gasket.
The unit under test is mounted to the end of the flexible tube. Please use a suitable sealing gasket from the adapter set purchased separately as an accessory. Tighten the connector to prevent any leaks to a maximum torque of 15 Nm.
In order to adapt the different connection threads of the unit under test, the test tube can be fitted with different adapters from the optional set of adapters.
Do not use teflon tape, this may damage your test pump.
You can unscrew the tube and also directly attach the test specimen with the same adapter to the pump (to minimize volume of your test system, for more easy operating the CPP30 pump).
11044608.02 07/2006 D/GB
WIKA BetriebsanleitungOperating InstructionsHandTest-HeldPumpThermometer |
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Test Pump
CPP30
GB |
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4. Operation of the Test Pump |
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(1) Pressure connector for refer- |
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ence instrument, G ½“ |
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female rotating |
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(2) Fine adjustment valve |
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(3) Pressure relief valve |
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(4) Change-over switch for |
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pressure/vacuum generation |
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(5) Handles |
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(6) Adjustable knurled nut for |
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the adjustment of the |
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delivery rate of the pump |
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(7) Pressure connection for test |
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specimen, G ¼ “ |
(8) Test tube length 1 m
4.1Generation of pressure
First, check wether the change-over valve (4) has to be actuated (see sticker on the device). For this purpose use a pen or a small screw-driver. The encasement of the switch is intended to help prevent unintentional actuation.
Never actuate the change-over valve (4) when the hand test pump is under pressure or vacuum! Actuate the change-over valve only when the relief valve is open.
Please make sure that the pressure relief valve (3) is not closed completely.
Turn the fine adjustment valve (2) anticlockwise up to the end (smooth “stop” can be felt).
Carefully turn in the pressure relief valve (3) until the valve closes. You will not notice any “hard stop”.
11044608.02 07/2006 D/GB
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WIKA BetriebsanleitungWIKAOperatingHaInstructionsd-Held ThermometerTest Pump |
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Test Pump
CPP30
Operate the hand pump (5) until the approximate pressure has |
GB |
been reached, but max. to 20 to 25 bar. |
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Turn the fine adjustment valve clockwise to increase the pressure or anti-clockwise to decrease the pressure until the requested test pressure has been reached precisely (to be read on the reference measuring instrument).
If you have prepared at previous step a pressure of about
20 to 25 bar, with the fine adjustment valve (2) you can increase the pressure now to 35 bar (up to 40 bar, depending on the volume of the measuring circuit).
After increasing the pressure, the reading may slightly drop again for about 30 seconds, which is caused by thermodynamic effects, the tube connection and the sealing gaskets. If the pressure drop does not come to a standstill, check the measuring circuit for tightness.
Due to the low volume of each compression stroke of the hand test pump, only small volume test specimens should be tested.
A pressure reduction is achieved by turning the fine adjustment valve (2) counter-clockwise first and then by carefully opening the relief valve (3).
Never actuate the change-over valve when the hand test pump is under pressure or vacuum! Actuate the change-over valve only when the relief valve is open.
Remove the reference instrument or the test specimen only when the relief valve (3) is open and no pressure is in the hand test pump any more.
11044608.02 07/2006 D/GB
WIKA BetriebsanleitungOperating InstructionsHandTest-HeldPumpThermometer |
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Test Pump
CPP30
GB |
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4.2 Generation of vacuum |
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First, check wether the change-over valve (4) has to be actuated (see sticker on the device). For this purpose use a pen or a small screw-driver. The encasement of the switch is intended to help prevent unintentional actuation.
Never actuate the change-over valve (4) when the hand test pump is under pressure or vacuum! Actuate the change-over valve only when the relief valve is open.
Please make sure that the pressure relief valve (3) is not closed completely.
Turn the fine adjustment valve (2) clockwise up to the end (“stop” can be felt).
Make sure that the adjustable knurled nut and counter nut (6) are in such a position that the spring visible above the nut has some clearance when the handles (5) are pressed together.
Carefully turn in the pressure relief valve (3) until the valve closes. You will not notice any “hard stop”.
Operate the handles (5) smoothly and slowly until a vacuum of max. -0.9 bar is reached.
Turn the fine adjustment valve (2) anti-clockwise to increase the vacuum up to -0.95 bar. Turn this valve for fine adjustment.
After increasing the vacuum, the reading may slightly increase again for about 30 seconds, which is caused by thermodynamic effects, the tube connection and the sealing gaskets. If the vacuum drop does not come to a standstill, check the measuring circuit for tightness.
Due to the low volume of each compression stroke of the hand test pump, only small volume test specimens should be tested.
11044608.02 07/2006 D/GB
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WIKA BetriebsanleitungWIKAOperatingHaInstructionsd-Held ThermometerTest Pump |
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