Kracht VCA 0.04 User manual

Operating instructions
BVC0007EN
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
BVC0007EN-D0025530002-02
Englisch
2012-03-30

Table of Content
1General points 4
1.1 About the documentation 4
1.2 Manufacturer´s address 4
1.3 Intended use 4
2Safety 6
2.1 Safety instructions and symbols 6
2.2 Personnel qualification and training 6
2.3 General safety instructions 6
2.4 Hazard statements 7
3Device description 10
3.1 Basic construction and function 10
3.2 Type key 11
3.3 Important special numbers 12
4Technical data 13
4.1 General characteristics 13
4.2 Overview nominal sizes 13
4.3 Permissible temperature of operating media 14
4.4 Overview of the series and materials 14
4.5 Dimensions and weights 16
4.5.1 Serie VCA / VCN / VCG - Type of connection R 16
4.5.2 Serie VCA / VCN /VCG - Type of connection P 18
5Transport and storage 20
5.1 Transport damage 20
5.2 Transport 20
5.3 Corrosion protection 21
6Installation 22
6.1 General points 22
6.2 Mechnical installation 22
6.2.1 Plate connection 24
6.2.2 Installation on external connection plates or valve
blocks 26

6.2.3 Pipe connection 26
6.3 Assembly with further components and devices 26
6.4 Electrical connection 27
6.4.1 Standard plug version 28
7Operation start-up 30
7.1 Preparation 30
7.2 Further operation start-up 32
7.3 Permissible limits for operation 32
8Removal 33
8.1 General points 33
8.2 Removal of the gear type flow meter 33
9Maintenance 35
9.1 General points 35
9.2 Unusual noise 37
9.3 Static seals 37
9.4 Screw joints 37
9.5 Desposits in the measuring device 37
10 Cleaning 38
11 Repairs 40
11.1 General points 40
11.2 Troubleshooting 40
11.3 Elimination of damage 40
11.4 Return 40
11.5 Disposal 41
11.6 Detecting and eliminating problems 41

1 General points
1.1 About the documentation
These operating instructions describe the installation, operation and mainte-
nance of the gear type flow meter VCA, VCN and VCG.
The device is manufactured in different versions. Information about the ver-
sion concerned in the individual case can be found on the device's type plate.
The structure of the type designation and a more detailed description of the
individual series and nominal sizes can be found in the chapter 3 “Device
description” and in the chapter 4 “Technical data”.
If you have any questions about this operating manual, please contact the
manufacturer.
1.2 Manufacturer´s address
Kracht GmbH
Gewerbestraße 20
DE 58791 Werdohl
phone: [phone] / 935-0
fax: [phone] / 935-209
email: [email protected]
web: www.kracht.eu
1.3 Intended use
The gear type flow meter is a measuring device for the continual flow me-
surement of combustible and non-combustible fluids. The different series
allow use with different viscosities and lubricating ablilities.
The device has been designed for operation with fluids. Dry operation is not
permitted. The medium must guarantee a minimum lubrication.
Operation is only permitted within the specified enviromental and ambient
conditions.
Use in explosive areas is not permissible.
It must be guaranteed that the medium is compatible with the materials used
in the device (see "Overview of series and materials" in the chapter 4 “Tech-
nical data”). The chemical competence is necessary for this. Be careful with
ethylene oxide and/or other catalytic and/or exothermic and/or self-decom-
posing materials! Please consult the manufacturer in cases of doubt.
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The device may only be used when its materials are resistant to mechanical
and/or chemical influences or corrosion under the respective operating con-
ditions.
A filter must be installed if required to avoid the device blocking on account
of contaminants.
The device may only be operated when closed and must not be exposed to
any impermissible vibrations.
The maximum permissible operating data listed in the chapter 4 “Technical
data” must always be observed.
Deviations from the above-mentioned data and operating conditions require
express approval by the manufacturer and/or are specified on the type plate.
Type plates or other references on the device must not be removed nor made
unlegible or unrecognisable.
In cases of noncompliance, all warranty and manufacturer responsibility shall
be void.
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
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2 Safety
2.1 Safety instructions and symbols
The safety notices in these operating instructions are marked with caution
symbols.
Non-compliance can lead to hazards for people and the device.
In addition, the safety instructions are marked with signal words. They have
the meanings as explained below:
Caution: Identification of a low risk hazard, which could lead to minor or
medium bodily injury if not avoided.
Warning: Identificationofapotentialmediumriskhazard,whichwouldlead
to death or severe bodily injury if not avoided.
Danger: Identification of an immediate hazard, which would result in death
or severe bodily injury if not avoided.
Notice: Flagging of notices to prevent property damage.
Flagging of special user tips and other especially useful or important infor-
mation.
2.2 Personnel qualification and training
The personnel designated to install, operate and maintenace the device must
be properly qualified. This can be through training or specific instruction. Per-
sonnel must be familiar with the contents of this operating manual.
2.3 General safety instructions
The operational safety of the device delivered is only guaranteed when it is
used for the intended purpose (see chapter 1 “General points”).
The limit values given must never be exceeded (see chapter 4 “Technical
data”).
Nationalregulations concerning accident preventationand health and safe-
ty at work must be observed, as well as internal regulations laid down by
the operator, even of these are not specifically mentioned in this manual.
The operator must ensure that this operating manual is accessible to the
staff responsible at all times.
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2.4 Hazard statements
DANGER
Danger due to breakage or squirting fluids!
If the device is blocked it acts like a closed gate. The pressure level that
occure in this case can result in damage to the device and to up or down-
stream plant elements. Breakage can lead to parts flying around uncon-
trolled or to fluids squirting out which can lead to accidents and severe
injuries or even result in death.
●A pressure relief valve or other kind of over-pressure safeguard must
be installed before the device.The pressure relief device must be di-
mensioned so that entire delivery volume can be conducted through
with the lowest possible pressure or pressureless.
●Do not put the device into operation without a pressure relief device.
DANGER
Danger due to pressure loaded lines.
When working on pressure loaded lines, uncontrolled or squirting fluids can
lead to accidents and severe injuries or even result in death.
●Always depressurize all lines during all work on the unit and before dis-
assembly.
DANGER
Danger due to breakage or squirting fluids!
Using unsuitable connections and lines can lead to breakage. Parts flying
around uncontrolled or squirting fluids can lead to accidents with severe
injuries or even lead to death.
●Use only connections and lines approved for the expected pressure
range.
●Comply with each manufacturer's regulations.
DANGER
Danger due to breakage or squirting fluids!
Using damaged connections and lines can cause parts to fly around un-
controlled or fluids to squirt out, which can lead to accidents and severe
injuries or even result in death.
●Immediately replace damaged connections, pipes and hose lines.
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
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DANGER
Danger due to electric voltage!
Danger of death due to electric shock.
●Follow the special safety regulations during all work on electrical instal-
lations.
●Only allow electricians to work on electrical systems.
WARNING
Danger due to hazardous fluid!
Danger of death upon contact with hazardous fluids and when inhaling va-
pours from these liquids.
●Comply with the safety data sheets and regulations on handling the
hazardous liquids!
●Collect and dispose leaks of hazardous materials so that no hazards
arise for people or the environment.
●Comply with national and international rules at the place of installation.
●Wear suitable protective clothing.
WARNING
Danger due to falling and or loads falling over!
Due to the size and weight of the unit, accidents can occur resulting in se-
vere injuries or death during transport and shipping.
●Compliancewithapplicableindustrialsafetyrequirementsismandatory.
●Use only suitable means of conveyance and lifting tackle with sufficient
load-bearing capacity.
●Attach the lifting tackle in such a manner that it cannot slip.
●Secure the device so that toppling over and falling down is impossible.
●Always avoid jerks, impacts and strong vibrations during transportation.
●Never walk under suspended loads, never work under suspended
loads.
●To prevent damage to the device, be extremely cautious when shipping
or transporting.
●Wear suitable protective clothing.
CAUTION
Danger due to hot surfaces!
When operating the device with hot media, there is a danger of being
burned and scaled when touching the hot surfaces.
●At medium temperatures above 60 °C, take measures against uninten-
ded contact.
●Wear safety gloves.
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
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CAUTION
Danger due to hot surfaces!
When operating the device with hot media, there is a danger of being
burned and scaled when touching the hot surfaces.
●When the medium temperature is over 48 °C, let the device cool off.
●Wear safety gloves.
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
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3 Device description
3.1 Basic construction and function
There are two gearwheels inside the housing that are supported with low
friction. They are driven by the fluid flow during operation. This gearwheel
movement is scanned inductively by one or two sensors in the cover, and
transformedinto electrical signals.These signals areforwarded to thedisplay
unit connected.
1. O-Ring
2. Sensor
3. Device plug
4. Cover
5. Housing
6. Gear
7. Bearing pin *
8. Plain bearing bush *
* Measuring device version "B"
(Measuring device version A, C, E and F not shown)
Gear type flow meter VCA / VCN / VCG 0,04 ... 5
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