Kracht VC 0,025 User manual

Operating instructions
BVC0002EN
Gear type flow meter VC 0,025 ... VC 16
BVC0002EN-D0025420002_01
Englisch
2010-07-05

Table of Content
1General points 5
1.1 About the documentation 5
1.2 Manufacturer´s address 5
1.3 Intended use 5
2Safety 7
2.1 Safety instructions and symbols 7
2.2 Staff qualification and training 7
2.3 General safety instructions 7
2.4 Hazard statements 8
3Device description 10
3.1 Basic structure 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 VC 0,025 ... VC 16 13
4.3 Permissible temperature of operating media 15
4.4 Overview of the series and materials 16
4.5 Dimensions and weights 18
4.5.1 Series 1, 2, 3, 4, 7; Type of connection P; Version S,
H; VC 0,025...VC 5 18
4.5.2 Series 1, Type of connection P, Version S, H; VC ./
79, VC 12, VC 16 20
4.5.3 Series1,2,3,4and7;TypeofconnectionP;Version
S, H with terminal box 22
4.5.4 Series 1; Type of connection R, Version S, H; VC
5 .../165 24
4.5.5 Series 1; Type of connection R; Version K, VC 5 .../
165 26
4.5.6 Series 5, 6 and 8; Type of connection P; Version S,
H28
4.5.7 Series 5, 6 and 8; Type of connection P; Version S,
H with terminal box 30

4.5.8 Series 1; Type of connection P; Version K 32
4.5.9 Series 5, 6 and 8; Type of connection R 34
4.5.10 Connection plates with thread connection on the
side 36
4.5.11 Connection plates with SAE flange connection on
the side 38
4.5.12 Connection plates with thread connection on the
rear 42
4.5.13 Connection plates with SAE flange connection on
the rear 44
5Transport and storage 46
5.1 Transport damage 46
5.2 Transport 46
5.3 Corrosion protection 47
6Installation 48
6.1 General points 48
6.2 Mechanical installation 48
6.2.1 Plate connection 50
6.2.2 Installation on external connection plates or valve
blocks 51
6.2.3 Pipe connection 51
6.3 Assembly with further components and devices 51
6.4 Electrical connection 52
6.4.1 Standard plug version 53
6.4.2 Terminal box version 54
7Operation start-up 55
7.1 Preparation 55
7.2 Further operation start-up 56
7.3 Permissible limits for operation 56
8Removal 57
8.1 General points 57
8.2 Removal of the gear type flow meter 57
9Maintenance 59
9.1 General points 59

9.2 Unusual noises 61
9.3 Static seals 61
9.4 Screw joints 61
9.5 Deposits in the measuring device 61
10 Cleaning 62
11 Repairs 64
11.1 General points 64
11.2 Troubleshooting 64
11.3 Elimination of damage 64
11.4 Return 64
11.5 Disposal 65
11.6 Detecting and eliminating problems 66

1 General points
1.1 About the documentation
These operating instructions describe the installation, operation and mainte-
nance of the gear type flow meter VC 0,025 ... VC 16.
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 "Technical
data" and in the chapter "Device description".
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 meas-
urementofcombustible andnon-combustiblefluids. Thedifferentseries allow
use with different viscosities and lubricating abilities.
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
inthedevice(see"Overviewofseriesandmaterials"inthechapter"Technical
data"). The chemical competence is necessary for this. Be careful with eth-
yleneoxideand/orothercatalyticand/orexothermic and/orself-decomposing
materials! Please consult the manufacturer in cases of doubt.
Gear type flow meter VC 0,025 ... VC 16
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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 "Technical data" chap-
ter 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
illegible or irrecognisable.
In cases of noncompliance, all warranty claims and manufacturer responsi-
bility shall be void.
Gear type flow meter VC 0,025 ... VC 16
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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: Identificationof apotentialmediumriskhazard,whichwould lead
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 Staff qualification and training
The staff designated to install, operate and maintenance the device must be
properly qualified. This can be through training or specific instruction. Staff
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 "General points").
The limit values given must never be exceeded (see chapter "Technical
data").
National regulations concerning accident prevention and health and safety
at work must be observed, as well as internal regulations laid down by the
operator, even if 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.
Gear type flow meter VC 0,025 ... VC 16
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2.4 Hazard statements
DANGER
Hazard caused by breakage or fluids spurting out
The connection pipelines must be made pressure-less before any work is
done on the device and prior to removal.
DANGER
Hazard caused by breakage or fluids spurting out
If the device is blocked it acts like a closed gate. The uncontrollable pres-
sure levels that occur in this case can result in damage to the device and
to the upstream system elements. For this reason, use of a pressure limiter
upstream from the device is essential.
It must be taken into consideration that the whole fluid flow must be dis-
charged via the pressure limiting device.
DANGER
Hazard caused by breakage or fluids spurting out
Onlyconnectionsandpipesapprovedforthepressurerangetobeexpected
may be used.
The respective manufacturer's regulations must be heeded.
DANGER
Hazard caused by breakage or fluids spurting out
Damaged pipes and hoses must be replaced immediately.
DANGER
Hazard caused by hazardous fluids
When operating the device with hazardous fluids, comply with the safety
datasheets and the regulations on handling these fluids.
Leaks of hazardous transport materials must be collected in such a manner
that no hazards arise for people and the environment.
Always comply with the existing national and international regulations ap-
plicable at the place of installation.
DANGER
Danger posed by voltage
The special safety regulations shall be followed for any work on electrical
installations. This work may only be carried out by a qualified electrician.
Gear type flow meter VC 0,025 ... VC 16
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DANGER
Hazard caused by falling and tipping loads
During transport, accidents can occur due to the size and weight of the
device.
Compliance with applicable industrial safety requirements is mandatory.
Wear suitable protective clothing.
Use only suitable means of conveyance and lifting tackle with sufficient
load-bearing capacity.
Attach lifting tackle only to suitable points.
Attach the lifting tackle in such a manner that it cannot slip.
Secure the unit 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.
CAUTION
Hazard caused by hot surfaces
The user is to take measures against unintended contact at temperatures
above 60°C.
CAUTION
Hazard caused by hot surfaces
At operating temperature above 48 °C the device must be allowed to cool
down first. Danger of scalding.
Gear type flow meter VC 0,025 ... VC 16
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3 Device description
3.1 Basic structure and function
The basic structure of the individual VC series is shown in the diagram below
using series 1 and 2 as examples.
There are two gearwheels inside the VC housing that are supported with low
friction. They are driven by the fluid flow during operation. This gearwheel
movement is scanned inductively by two sensors in the cover, and trans-
formedintoelectricalsignals.Thereisapressure-resistanta-magneticdivider
between the sensor space and measuring chamber. These signals are for-
warded to the display unit connected.
Tab. 3.1: Basic structure VC 0,025 ... VC 16
1. Cover
2. Housing
3. Gear
4. Bearing pin
5. Bearing *
6. A-magnetic divider
7. Sensor
8. Device plug
9. O-Ring
* Series 1, 2, 6, 7, 8: Ball bearing
Series 3, 4, 5: Plain bearing (not shown)
Gear type flow meter VC 0,025 ... VC 16
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3.2 Type key
Tab. 3.2: Ordering example VC 0,025 ... VC 16
VC 0,2 F 1 P S /...
1. 2. 3. 4. 5. 6. 7.
Tab. 3.3: Explanation of type key VC 0,025 ... VC 16
Explanation of type key
1. Product name
2. Nominal size
VgZ 0,025 - 0,04 - 0,1 - 0,2 - 0,4 - 1 - 2 - 5 - 12 - 16 cm3
3. Seal
FFKM KFFKM ATFE/P (Aflas)
EEPDM NNBR SSilicone
PPTFE/FEP
4. Series 1 , 2 , 3 , 4 , 5 , 6 , 7, 8
5. Type of connection
PPlate structure RPipe connection
6. Electronics
SStandard (-30...120° C) VWithout pre-amplifier (for plug-in dis-
play SD 1)
HHigh temperature (-30...150 °C) XATEX version* (-30...80 °C)
KHigh temperature PLUS (-30...220
°C) KX High temperature PLUS ATEX ver- sion* (-30...200 °C)
7. Special number for special versions
See section "Important special numbers"
* The ATEX versions are described in separate operating manuals.
Gear type flow meter VC 0,025 ... VC 16
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3.3 Important special numbers
Tab. 3.4: Important special numbers for VC 0,025 ... VC 16
Special
number Series Description
55 1 - 8 Variant with aluminium terminal box, pre-amplifier VV12 and Cannon plug
71 1 - 8 Variant with Hirschmann plug with device socket according to DIN (M12x1)
74 1 - 8 Variant with Hirschmann plug and pre-amplifier VV12 for 12 V current supply
to pre-amplifier
79 1 VC 3 and VC 5 in high-pressure version (400 bar)
155 1 VC 3 and VC 5 in high-pressure version (400 bar) with skydrol-resistant
coating and aluminium terminal box with Cannon plug
156 1 Variant with skydrol-resistant coating and aluminium terminal box with Can-
non plug
165 1 VC 5 for booster systems
Gear type flow meter VC 0,025 ... VC 16
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4 Technical data
4.1 General characteristics
Tab. 4.1: General characteristics VC 0,025 ... VC 16
General characteristics
Construction Geared motor
Materials see section "Overview of series and materials"
Pipe connection Plate structure or pipe thread
Installation position/direction of flow Any
Permissible ambient temperature ϑ
-30 ... 80 °C (seal variants E, P, N, S)
-15 ... 80 °C (seal variants F, K)
-10 ... 80 °C (seal variant A)
4.2 Overview nominal sizes VC 0,025 ... VC 16
Tab. 4.2: Nominal sizes VC 0,025 ... 0,4
Nominal size* 0,025 0,04 0,1 0,2 0,4
Tooth volume cm30,025 0,04 0,1 0,245 0,4
Resolution Imp/l 40000 25000 10000 4081,63 2500
Max.
operating pressure bar 400 400 400 400 400
Pressure peak bar 480 480 480 480 480
Measuring range**
for series
in l/min
1 0,008...2 0,02...4 0,04...8 0,16...16 0,2...40
2 - - - 0,16...16 -
3 - - - - -
4 - - - 0,16...16 0,2...30
5 0,02...2 - - 0,16...16 0,2...30
6 0,008...2 0,02...4 0,04...8 0,16...16 -
7 0,008...2 0,02...4 0,04...8 0,16...16 -
8 0,008...2 0,02...4 0,04...8 0,16...16 -
Sound pressure level LpA db(A) < 60 < 60 < 60 < 60 < 70
* See type key and type description on the device: VC ...
** The measuring range may be restricted at higher pumping medium viscosity.
Gear type flow meter VC 0,025 ... VC 16
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Tab. 4.3: Nominal sizes VC 1 ... 16
Nominal size* 1 3 5 5 /165 12 16
Tooth volume cm31,036 3,000 5,222 12,0 16,0
Resolution Imp/l 965,25 333,33 191,50 83,33 62,50
Max.
operating pressure bar 400 315 (400)*** 315 (400)*** 200 400 400
Pressure peak bar 480 350
(480)*** 350 (480)*** 240 480 480
Measuring range**
for series
in l/min
1 0,4...80 0,6...160 1...250 1...160 2,0...600 2,5...700
2 0,4...80 0,6...160 1...250 - - -
3 0,6...40 - 1,2...80 - - -
4 0,3...60 0,6...100 1...160 - - -
5 0,3...60 0,6...100 1...160 - - -
6 0,4...80 0,6...160 1...250 - - -
7 0,4...80 - - - - -
8 0,4...80 - - - - -
Sound pressure level LpA db(A) < 70 < 70 < 72 < 72 < 80 < 80
* See type key and type description on the device: VC ...
** The measuring range may be restricted at higher pumping medium viscosity.
*** High-pressure version .../79
NOTICE
The max. pressure loss in the gear type flow meter must not exceed 16
bar.
Gear type flow meter VC 0,025 ... VC 16
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4.3 Permissible temperature of operating media
Tab. 4.4: Permissible temperature of operating media for VC 0,025 ... 16, series 1, 2, 6, 7, 8 *
Seal variant Version S
(Standard)
°C
Version H
(High temperature)
°C
Version K
(High temperature
PLUS)
°C
FFKM -15...120 -15...150 -15...150
(170)****
EEPDM ** -30...120 -30...130 -30...130
PPTFE/FEP -30...120 -30...150 -30...220 (180) ***
NNBR -30...100 -30...100 -30...100
ATFE/P (Aflas) -10...120 -10...150 -10...200 (180) ***
SSilicone -30...120 -30...130 -30...130
KFFKM -15...120 -15...150 -15...220 (180) ***
*Thetemperatureofthe operatingmediumreferstomineralhydraulicfluids(e.g.HLP),othermedia
can cause other operating temperature limits!
** Specification of operating media temperature refers to brake fluid (DOT3/DOT4).
*** For VC 0,025 ... 0.1 (version K) the maximum permissible media temperature is 180 °C.
**** Valid for VC 5 .../165 (version K)
Tab. 4.5: Permissible temperature of operating media for VC 0,025 ... 16, series 3, 4, 5 *
Seal variant Version S
(Standard)
°C
Version H
(High temperature)
°C
Version K
(High temperature
PLUS)
°C
FFKM -15...80 - -
EEPDM ** -30...80 - -
PPTFE/FEP -30...80 - -
NNBR -30...80 - -
ATFE/P (Aflas) -10...80 - -
SSilicone -30...80 - -
KFFKM -15...80 - -
*Thetemperatureofthe operatingmediumreferstomineralhydraulicfluids(e.g.HLP),othermedia
can cause other operating temperature limits!
** Specification of operating media temperature refers to brake fluid (DOT3/DOT4)
Gear type flow meter VC 0,025 ... VC 16
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4.4 Overview of the series and materials
Tab. 4.6: Overview of the series and materials VC 0,025 ... VC 16: Series 1, 2, 3, 4
Series 1 2 3 4
Materials
Housing / cover EN-GJS-400-15 (GGG40) VC 3/79, VC 5/79, VC 12 u. VC 16:
EN-GJS-600-5 (GGG60)
Measuring unit 1.7139 (case-hardened steel)
Bearing Anti-friction bearing steel Sn-bronze Carbide
Seals * FKM, EPDM, PTFE/FEP, NBR, TFE/P (Aflas), Silicone,
FFKM
Type of bearing Ball bearing Bronze plain
bearing Carbide plain bearing
Viscosity of the operating fluid in
mm2/s 1 ... 3000
(1 ... 5000)** 5 ... 5000 200 ... 500000 50 ... 5000
Lubricating properties of the op-
erating fluid good poor
Permissible size of contaminants
in operating fluid in µm 20
(50)** 30 50 30
* See type key and type description on the device: VC ...
** Valid for VC 5 .../165
Gear type flow meter VC 0,025 ... VC 16
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Tab. 4.7: Overview of the series and materials VC 0,025 ... VC 16: Series 5, 6, 7, 8
Series 5 6 7 8
Materials
Housing / cover 1.4404 EN-GJS-400-15 1.4404
Measuring unit 1.4462 1.7139 1.4462
Bearing Carbide Stainless
steel Anti-friction bearing steel / ceramic spheres
Seals * FKM,EPDM,PTFE/FEP,NBR,TFE/P(Aflas),Silicone,FFKM
Type of bearing Carbide plain bear-
ing
Stainless
steel ball
bearing Hybrid ball bearing
Viscosity of the operating fluid
in mm2/s 50 ... 5000 1 ... 3000
Lubricating properties of the op-
erating fluid poor good poor
Permissible size of contami-
nants in operating fluid in µm 30 20
* See type key and type description on the device: VC ...
Gear type flow meter VC 0,025 ... VC 16
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4.5 Dimensions and weights
4.5.1 Series 1, 2, 3, 4, 7; Type of connection P; Version S, H; VC 0,025...VC 5
Tab. 4.8: Series 1, 2, 3, 4, 7; connection P; version S, H; VC 0,025...VC 5
1 = Version S
2 = Version H * = O-ring
** = Tightening torque MA
X = Connection side
Gear type flow meter VC 0,025 ... VC 16
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Tab. 4.9: Series 1, 2, 3, 4, 7; connection P; version S, H; VC 0,025...VC 5
Nominal sizeVC 0,025 0,04 0.1 0,2 0,4 1 3 5
Series available 1, 7 1, 7 1 1, 2, 4, 7 1, 4 1, 2, 3, 4, 7 1, 2, 4 1, 2, 3, 4
Weight in kg 1,8 2 2,3 2 3,7 5,2 9 13
Tightening torque in Nm 14 14 14 14 35 35 120 120
Dimensions
A85 85 85 85 100 120 170 170
C10 9 10 13 17 13 18 22
D60 60 60 60 90 95 120 120
F50 56 55 57 63 72 89 105
GS101 107 116 108 114 123 140 156
GH114 120 129 121 127 136 153 169
J- - - - - 15,5 46,5 46,5
K70 70 70 70 80 84 46 46
L40 40 40 40 38 72 95 95
M20 20 20 20 34 35 50 50
N6,5 6,5 6,7 9 16 16 25 25
PM6 M6 M6 M6 M8 M8 M12 M12
Gear type flow meter VC 0,025 ... VC 16
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4.5.2 Series 1, Type of connection P, Version S, H; VC ./79, VC 12, VC 16
Tab. 4.10: Series 1, connection P, version S, H; VC ./79, VC 12, VC 16
1 = Version S
2 = Version H * = O-ring ** = Tightening torqueMA
X = Connection side
Gear type flow meter VC 0,025 ... VC 16
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