WIKA CPP 7 Manuale utente

Operating Instructions

Betriebsanleitung

CPP 7

Hand test

CPP7

Hand

rüf

e D

Handprüfpumpe CPP7

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 2

Information

This symbol provides you with information, notes and tips.

Warning!

This symbol warns you against actions that can cause injury to people or

damage to the instrument.

Operating Instructions Hand Test Pump Page 4 - 12GB

Betriebsanleitung Handprüfpumpe Seite 13 - 23

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 3

1. General........................................................................................................................................... 4

1.1 General instructions...................................................................................................................... 4

1.2 Safety instructions...................................................................................................................... 5

2. Product description....................................................................................................................... 5

3. Mounting instructions...................................................................................................................... 6

4. Operation of the test pump........................................................................................................... 7

4.1 Generation of pressure............................................................................................................... 7

4.2 Generation of vacuum................................................................................................................. 8

5. Maintenance instructions............................................................................................................. 9

6. Cause of fault................................................................................................................................. 9

7. Specifications.............................................................................................................................. 10

8. Order data / Accessories............................................................................................................ 11

9. Recommended reference instruments...................................................................................... 12

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 4

1. General .

1.1 General instructions .

In the following chapters detailed information on the CPP 7 hand test pump and its proper use can be

found.

Should you require further information, or should there be problems which are not dealt within detail in

the operating instructions, please contact the address below:

WIKA Alexander Wiegand SE & Co. KG

Alexander Wiegand Strasse

D-63911 Klingenberg

Tel: +49-(0)9372/132-473

Fax: +49-(0)9372/132-8767

E-Mail: [email protected]

The warranty period for the hand test pump is 24 months according to the general terms of supply of

ZVEI.

The guarantee is void if the appliance is put to improper use or if the operating instructions are not

observed or if an attempt is made to open the appliance or to release attachment parts.

We also point out that the content of these operating instructions neither forms part of an earlier or

existing agreement, assurance or legal relationship nor is meant to change these. All obligations of

WIKA Alexander Wiegand SE & Co. KG result from the respective sales contract and the general

business terms of WIKA Alexander Wiegand SE & Co. KG.

WIKA is a registered trade mark of WIKA Alexander Wiegand SE & Co. KG.

Names of companies or products mentioned in this handbook are registered trade marks of the

manufacturer.

The devices described in this manual represent the latest state of the art in terms of their design,

dimension and materials. We reserve the right to make changes to or replace materials without any

obligation to give immediate notification.

Duplication of this manual in whole or in part is prohibited.

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 5

1.2 Safety instructions .

Read these operating instructions carefully prior to operating the hand test

pump CPP 7.

Ensure that all pressure connections have been established correctly.

2. Product description .

The CPP 7 hand test pump is used to generate pressure for checking, adjusting and calibrating

mechanical and electronic pressure measuring instruments by comparative measurements in the low-

pressure range. These pressure tests may be carried out in laboratories, workshops or on site at the

measuring point.

If the instrument to be tested and a sufficiently accurate reference measuring 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 measure valves at random pressure values, the accuracy

can be verified or the instrument under test can be adjusted.

The CPP 7 is a pneumatic hand test pump for low-pressure ranges up to 7 bar with change-over

switch to vacuum generation down to -850 mbar. Despite its compact dimensions, the hand test pump

CPP 7 is easy to operate and allows for exact generation of the required test pressures. The

maximum pressure or vacuum achievable depends on the attached test volume. The smooth-running

pressure generation and the integrated fine adjustment valve allow a safe and precise setting of very

small positive respectively negative pressure values in the range of mbar.

The test device and the reference instrument can be easily connected by means of a T-connector with

tube connection.

(1) = Pressure connectors for reference

instrument / test item G1/2” female

thread

(2) = Fine adjustment valve

(3) = Pressure relief valve and change-over

pressure / vacuum generation

(4) = Pump handle

(5)=Ram

(6) = T-connector 2x 1/8” NPT female to

1/8” NPT male

(7) = Tubing connector 1/8” NPT male to

1/8” quick connect

(8) = Flexible hoses for test item connection

(length 1 m)

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 6

3. Mounting instructions .

Mount the T-connector (6) into the 1/8 NPT female thread of the pump body using PTFE tape.

Mount the 4 tubing connectors (7) into both 1/8 NPT female threads of the T-connector (6) and of

both G ½“ pressure connectors (1) using PTFE tape.

Connect each pressure connector (1) with one port at the T-connector (6) of the pump by plugging

the flexible hose (8) into the quick connectors (7).

The reference instrument as well as the test item is mounted into a pressure connector (1).

For sealing please use the sealing gaskets supplied with the pump. Tighten the connector to

prevent any leaks to a maximum torque of 15 Nm.

Never apply external pressure to the CPP 7. Do not connect to external pressure

sources.

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 7

4. Operation of the test pump .

4.1 Generation of pressure .

Make sure, the pressure relief and change over valve for pressure/vacuum (3) is in „VENT“

position.

Turn the fine adjustment valve (2) counter-clockwise fully out (smooth “stop” can be felt)

Turn the pressure relief and change over valve (3) to „PRESSURE“ position.

Operate the ram (5) of the hand pump until the approximate pressure has been achieved.

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).

NOTE: 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) anticlockwise first and

then by carefully switching the change-over valve (3) to “VENT” position.

Remove the reference instrument or the test specimen only when the relief

valve (3) is open and no pressure is in the test pump any more.

Fine adjustment valve (2)

Pressure relief and change

over valve for

pressure/vacuum (3)

3 positions

VACUUM VENT PRESSURE

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 8

4.2 Generation of vacuum .

Make sure, the pressure relief and change over valve for pressure/vacuum (3) is in „VENT“

position.

Turn the fine adjustment valve (2) clockwise up to the end (“stop” can be felt)

Turn the pressure relief and change over valve (3) to „VACUUM“ position.

Operate the ram (5) of the hand pump until the approximate vacuum has been achieved.

Turn the fine adjustment valve anti-clockwise to increase the vacuum or clockwise to decrease the

vacuum until the requested vacuum has been reached precisely (to be read on the reference

measuring instrument).

NOTE: 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.

A vacuum reduction is achieved by turning the fine adjustment valve (2) clockwise first and

then by carefully switching the change-over valve (3) to “VENT” position.

Remove the reference instrument or the test specimen only when the relief

valve (3) is open and no vacuum is in the test pump any more.

Fine adjustment valve (2)

Pressure relief and change

over valve for

pressure/vacuum (3)

3 positions

VACUUM VENT PRESSURE

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 9

5. Maintenance instructions .

Prior to connecting the reference instrument and the test specimen, the sealing gasket in the two

connectors should be checked for correct position and wear, and should be replaced, if and when

necessary.

The hand test pump CPP30 must not be soiled, and in particular it must not get into

contact with fluid or aggressive media.

6. Cause of fault .

If the pressure or vacuum cannot be generated correctly or if the set pressure or vacuum does not

stay stable, this is likely to be caused by the incorrectly positioned or selected sealing gaskets.

Please also check wether any adapters used on the test connections have been tightened

sufficiently to eliminate leaks.

Before assuming there is a leak in the hand test pump:

First of all, check if the change-over valve (3) is not switched to “VENT” position.

If the test pump has not been used for a longer period of time, the first lift may be somewhat

sluggish. This effect will disappear again during further operation.

By no means apply any force to the operating elements of the hand test pump.

Never connect an external pressure supply system to the

CPP7 hand test pump.

Hand test pump GB

CPP 7

WIKA Operating Instructions Hand test pump Version 1.0 10

7. Specifications .

CPP 7

Pressure range bar -0,85 ... +7

psi -12 … +100

Medium Air

Pressure connections 1 port with 1/8“ NPT female at the pump body, prepared for mounting a T-

connector with 2 hoses and G ½” female connection threads

Pressure fine adjustment Fine adjustment valve

Dimensions mm 160 (L) x 115 (W) x 40 (H) without T-connector

160 (L) x 160 (W) x 45 (H) with T-connector

Mass kg 0.27 without T-connector

0.34 with T-connector

Standard accessories T-connector

4 tubing connectors

2 connection hoses (each 1 m length)

2 connection adapters to G ½” female

2 sealing gaskets

PTFE tape

Indice

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