Home

Operation instructions

1. f h oe ESBS N B TA iA lil NIN Fy ii 4 OF E ELLA HM Direction of rotation 3 Right and left 14 2011 09 06 BKF0097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 Tab 3 3 Basic construction KF 3 63 KF 6 730 Description 1 Cover Gasket Housing Shaft Plain bearing bush Driven shaft Gear ee ee Ze eee Parallel key 9 O Ring 10 Flange cover 11 Retaining ring 12 Roller bearing See section 3 3 Type of seals for further seal types BKF0097EN_D0024860002 05 2011 09 06 13 14 15 16 17 18 19 20 21 22 23 24 KRACHT O Ring Socket head cap screw Rotary shaft lip seal Seal retainer Parallel key Centering sleeve Stud Hexagonal nut Socket head cap screw Ball Compression spring Screw plug 15 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 3 2 2 KF 3 63 KF 6 730 DKF with pressure relief valve Tab 3 4 Baisc construction KF 3 63 KF 6 730 DKF 2327255 8810 1 12 13 14 15 16 17 A ae VW LAIN NY SEE ES NE G TZ TS ESA I Te 7 Y 0 N ENS SS ON PAE NZ TZZ ES SS SSSNNYF m imal a ZEISS OOOO AH ken ZN MV IN s HA 2 AFB gt rrr nn Y N N AA OSOS D HA N 23 SEN NE 24 J 1 Cb A r c 28 ed 90 31 Je 33 2011 09 06 BKFO097EN_D0024860002
2. e Wear suitable protective clothing Danger due to hot surfaces When operating the device with hot media there is a danger of being burned and scalded when touching the hot surfaces Let the device cool off first when the medium temperature is over 48 C e Wear safety gloves Remove the depressurised pipelines from the pump Seal the pump connections and pipelines to prevent dirt penetration Disassemble the pump Pull off clutch hub resp the driving pinion from shaft end using an ex tractor Danger of malfunction due to curing liquids Curing liquids can engage the device mechanically and make it unusable Immediately clean the pump or store it in such a way that curing is def initely prevented in cases where the pump was operated with curing liquids 62 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 9 Maintenance 9 1 General points Danger of property damage due to insufficiently qualified personnel Improper work can lead to damages and malfunctions in the device and in the plant e Permit only expert and technically qualified personnel to work on the device Danger of damages and malfunctions due to a lack of maintenance If the device is not regularly maintained damage that is not discovered or not repaired can lead to malfunctions and to the failure of the device e Maintain the device regularly e Check the device initially
3. 76 1 20 65 73 117 6 730 730 1500 68 76 120 See type key and type designation at pump KF Permissible forces only at version with outboard bearing Fai ON Central shaft end Valid for pump with mechanical seal e n 1500 rom HLP 46 v 12 34 85 mms p 5 bar p 26 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 4 3 Permissible speed Tab 4 3 Permissible speed depending on the viscosity KRACHT Kinematic viscosity v in mm s lt 300 300 500 1000 2000 3000 6000 10000 20000 30000 gt 1450 1250 1000 750 600 500 400 300 200 100 Speed Nmax In rpm 4 4 Overview materials Tab 4 4 Materials KF 3 63 KF 6 730 Seal Housing Cover Gear Bearing Shaft seal Other seals type 1 NBR NBR C4400 2 FKM FKM C4400 29 Cr casting FKM C4400 Carbon anti mon impregna ted FKM 1 4571 30 Cr casting FEP DU P10 i Steel Carbon anti C4400 Cu sintered bronze TON MPregna EN GJL 250 T ted PTFE Carburising PTFE Pb GG 25 1 4571 steel Iglidur G X 32 EN GJS 400 15 1 7139 DPA PTFE FEP GGG 40 Steel C4400 Cu 37 sintered bronze FKM low tem FKM low PTFE perature tempera ture 39 Cr casting FKM C4400 Carbon anti mon impregna ted FKM 1 4571 40 SiC SiC PTFE FEP 1 4571 C4400 Cu See type key and type designatio
4. Any openings must be closed 10 5 Disposal Disposal of the packaging and used parts must be garried out according to the regualtions valid in the country where the device is installed 10 6 Detecting and eliminating problems The following table lists the possible causes of the most frequently occuring malfunctions and notes on possible remedies If the problems cannot be identified please request help from the manufac turer Tab 10 1 Transfer pumps Faults and causes Fault Potential causes Increased Pump noise cavitation Negative pressure too high causing pump short filling Suction height too high Suction filter plugged or too small Inner diameter of suction line too small Suction line too long Too many bends in the suction line Too many local constrictions in the suction line Suction line plugged or leaking Too high viscosity Temperature too low Wrong direction of rotation Place of installation too high 70 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Fault Potential causes Foaming or trap ped air in medium Suction line leaking Fluid level in supply tank too low Too little oil supply Return line to tank leaking Wrong tank dimensioning Shaft seal or seal on suction line leaking Return line end above the fluid level in the supply tank Insufficient venting Too strong foaming in the gear Mechani cal vibra tions Inco
5. 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 e Use only connections and lines approved for the expected pressure range e Comply with each manufacturer s regulations 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 e Immediately replace damaged connections pipes and hose lines 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Hazard caused by incorrect direction of rotation Operating the device with the incorrect direction of rotation can lead to damage to the device and to the up or downstream plant elements Break age can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death Always pay attention to the correct direction of rotation when installing the pumps Always pay attention to the correct direction of rotation when connecting the motors e Secure the fitting keys against flying off when monitoring the direction of rotation Danger due to electric voltage Danger of death due to electric shock e Follow the special safety regulations
6. Transfer Gear Pumps KF 3 63 KF 6 730 KRACHT Danger due to breakage or squirting fluids e Never allow positive displacement pumps to pump against closed e A pressure relief valve or other kind of over pressure safeguard must e Do not put the device into operation without a pressure relief device Operating the device with impermissibly high pressures can lead to damage to the device and to the up or downstream plant elements Breakage can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death gates be installed as close as possible to the pump pressure connection The pressure relief device must be dimensioned so that the entire delivery volume can be conducted through it with the lowest possible pressure or must be depressurized 9 2 Unusual noise Danger due to hazardous fluid Danger of death upon contact with hazardous fluids and when inhaling va pours from these liquids e Comply with the safety data sheets and regulations on handling the hazardous liquids e Collect and dispose leaks of hazardous materials so that no hazards arise for people or the environment e Comply with national and international rules at the place of installation e Wear suitable protective clothing Danger due to hot surfaces When operating the device with hot media there is a danger of being burned and scalded when touching
7. quench Special number 94 Special number 94 1 NBR 2 FKM Transfer Gear Pumps KF 3 63 KF 6 730 Pump with double rotary shaft lip seal and con nection pipe 8x1 for liq uid seal quench Special number 44 261 Sealing materials 1 NBR 2 FKM 32 PTFE Pump with single rotary shaft lip seal for vacuum operation Special number 191 Sealing materials 1 NBR 2 FKM 2011 09 06 BKF0097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT z gt EEE mm V e O HH Z S LG A A SS Z Ve aug y ESSE Pump with outboard bearing Pump with mechanical seal and out without shaft seal board bearing Special number 196 Sealing materials Sealing materials 29 FKM 1 NBR 30 PTFE FEP 2 FKM Pump with mechanical seal and connection borehole G 1 4 for liquid seal quench Sealing materials 39 FKM 40 PTFE FEP BKF0097EN_D0024860002 05 2011 09 06 21 KRACHT 3 4 Type key Tab 3 9 Ordering example KF 3 63 KF 6 730 Transfer Gear Pumps KF 3 63 KF 6 730 KF3 163 F 1 0 B P 0 00 7 D P 2 4 DKF 3 D 04 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 KF4U04 18 Tab 3 10 Explanation of type key KF 3 63 KF 6 730 Ex
8. 25 5 200 25 30 5 250 20 25 5 315 16 20 6 400 25 30 6 500 20 25 6 630 16 20 6 730 14 16 See type key and type designation at pump KF BKF0097EN_D0024860002 05 2011 09 06 29 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Tab 4 7 Operating pressure suction side for universal device KF U Nominal size Permissible operating pressure p at pump suction connection Pe min Pe max bar abs bar 3 63 3 80 0 64 3 100 3 112 0 65 4 125 0 66 4 150 0 67 nn Ze See table 4 5 5 200 0 62 5 250 0 63 5 315 0 64 6 400 0 63 6 500 0 64 6 630 0 67 6 730 See type key and type designation at pump KF 30 NOTICE Danger of property damage due to overload Overloads in pumps with Iglidur X bearings can cause the bearings to wear prematurely Never exceed the max permissible Ap 10 bar Danger of property damage when simultaneously utilizing multiple operating limits When simultaneously utilizing multiple operating limits see chapter 4 Technical data the pump could become damaged or prematurely wear Do not use minimum and maximum parameters at the same time For example maximum operating pressure ist not permissible in con nection with low speed and or low viscosity 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Danger of property damage when pumping aqueous fluids When pump
9. 6 730 KRAC HT Tab 3 7 Basic construction KF 3 63 KF 6 730 KF U Description 1 Socket head cap screw 18 Usit Ring 2 Rotary shaft lip seal 19 Gasket 3 Parallel key 20 Screw plug 4 Housing 21 Ball 5 Plain bearing bush 22 Cover 6 Parallel key 23 Screw plug 7 Gear 24 Compression spring 8 Driven shaft 25 Gasket 9 Shaft 26 Rod 10 O Ring 27 Piston 11 Flange cover 28 Valve cone 12 Retaining ring 29 Compression spring 13 Roller bearing 30 Valve housing 14 O Ring 31 Cover 15 Seal retainer 32 O Ring 16 Gasket 33 Cover 17 Connection elbow 34 O Ring See section 3 3 Type of seals for further seal types BKF0097EN_D0024860002 05 2011 09 06 19 KRACHT 3 3 Type of seals Tab 3 8 Types of seals KF 3 63 KF 6 730 Pump with single rotary shaft lip seal Sealing materials 1 NBR 2 FKM 32 PTFE 37 FKM low temperature only KF 3 P Pump with double rotary shaft lip seal for vacuum operation with connection pipe 8x1 for liq uid seal quench Special number 74 309 Sealing materials 1 NBR 2 FKM 20 ip IH NCTA EN Uri MET gt OS as N WA KS Pump with single rotary shaft lip seal and outboard bearing Sealing materials 1 NBR 2 FKM 32 PTFE x ea N SY N i R Pump with triple rotary shaft lip seal for vacuum and normal operation with connection pipe 8x1 for liquid seal
10. and in the plant Pay attention to cleanliness during all work Close all openings with protective caps to prevent dirt from penetrating into the system Malfunctions due to leaking lines and connections Leaks can occur and air can be sucked in if lines or connections are not tight Suctioned air leads to a decrease of the delivery rate and foams up the medium Make sure all lines and connections are tight 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 64 e Immediately replace damaged connections pipes and hose lines Danger due to electric voltage Danger of death due to electric shock Follow the special safety regulations during all work on electrical instal lations e Only allow electricians to work on electrical systems Hazard caused by rotating parts and fluid squirting out During all work on the device rotating parts and squirting fluids can lead to accidents and severe injuries or even restult in death Depressurize all connections lines during all work on the device Depressurize or disconnect the driving motor during all work on the de vice Securely prevent the motor and device from restarting during work e Wear suitable protective clothing 2011 09 06 BKFO097EN_D0024860002 05
11. burned and scalded when touching the hot surfaces At medium temperatures above 60 C take measures against uninten ded contact e Wear safety gloves Danger due to hot surfaces When operating the device with hot media there is a danger of being burned and scalded when touching the hot surfaces Let the device cool off first when the medium temperature is over 48 C e Wear safety gloves 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 3 Device description 3 1 General points KF series pumps are external gear pump types that work according to the positive displacement principle When rotated two gears being engaged with each other cause volume ex pansion by opening the tooth gaps in the pump inlet suction side so that the medium can enter while a corresponding volume is being displaced in the pump outlet pressure side through engagement of the teeth into the filled tooth gap Fluid transport takes place through entrainment in the tooth gaps along the wall of the wheel chamber The so called geometric flow rate V is being displaced per wheel rotation A value that is stated in technical docu ments as rated volume V to specify the pump size The actually delivered amount of liquid does not correspond with the theo retical value it is being reduced through losses due to the necessary toler ances The losses are less the lower the operating pressure and the hig
12. drags in pressure pipe too low Too low viscosity Pressure relief valve set too low or does not shut Too low speed Driving power too low Pump worn out Excessive power con sumption Too high pressure Too high viscosity Driving power too low Motor winding defective Excessive operating temperature Pressure relief valve set too high Speed too high Cooling and heat dissipation insufficient Supply of fluid too low Fluid is being delivered into the supply tank via pressure relief valve under load Impermissi ble pump heating Delivery side valve cone not completely shut Directly mounted pressure relief valve set too low does not apply for the universal valve and T valve versions Too high pressure Too low viscosity Gland lid overtightened Separating can insufficiently bled Admission pressure impermissibly high Pump worn out 72 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Fault Potential causes Leakages on shaft seal Admission pressure impermissibly high Wrong direction of rotation Too high radial shaft loading Temperature at sealing point too high Wrong seal material Missing confining fluid Separating can defective Sealing wear due to poorly lubricating medium Sealing wear through abrasive components in medium Sealing wear through curing medium Gland lid not sufficiently tightened Clutch wear Incorrectly al
13. during all work on electrical instal lations e Only allow electricians to work on electrical systems BKF0097EN_D0024860002 05 2011 09 06 co KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Hazard caused by rotating parts and fluid squirting out During all work on the device rotating parts and squirting fluids can lead to accidents and severe injuries or even restult in death e Depressurize all connections lines during all work on the device e Depressurize or disconnect the driving motor during all work on the de vice e Securely prevent the motor and device from restarting during work e Wear suitable protective clothing Danger due to hazardous fluid Danger of death upon contact with hazardous fluids and when inhaling va pours from these liquids e 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 Hazard caused by rotating parts Rotating parts can cause accidents with severe injuries or result in death due to body parts hair or clothing getting caught or wrapped up e Protect rotating parts e g coupling and shaft ends against uninten tional contact e Close any maintenance openings when using bell housings e Do
14. end 94 Pump with triple rotary shaft lip seal for vacuum and normal operation with connection for liquid seal quench 191 Pump with rotary shaft lip seal for vacuum operation sealing lip mounted on shaft end noise optimized version for aerated oils and vacuum 196 Pump without shaft seal noise optimized version for aerated oils and vacuum external leak oil drainage 197 Noise optimized version for aerated oils and vacuum 261 Pump with double rotary shaft lip seal and connection for liquid seal quench noise optimized version for aerated oils and vacuum 304 Bearing bushings Iglidur X Apna 10 bar 309 Pump with double rotary shaft lip seal for vacuum operation and connection for liquid seal quench inner rotary shaft lip seal mounted with sealing lip towards shaft end noise optimized version for aerated oils and vacuum 317 Noise optimized version for aerated oils and vacuum bearing bushings Iglidur X APmax 10 bar 332 Version for low viscous media only in connection with material GJS bearing bushings Iglidur X Vmin 4 mm s at Apna 10 bar 353 Noise optimized version for aerated oils and vacuum bearing bushings DP4 leadfree gt Particularities in noise optimized pumps 24 e Air trapped in the medium or too high negative pressure can result in delivery rate reduction for pumps in noise optimized version e Measures for noise
15. lead to breakdowns e Comply with each manufacturer s operating instructions when assem bling with additional components or devices 6 9 Electrical connection Danger due to electric voltage Danger of death due to electric shock e Follow the special safety regulations during all work on electrical instal lations e Only allow electricians to work on electrical systems Hazard caused by incorrect direction of rotation Operating the device with the incorrect direction of rotation can lead to damage to the device and to the up or downstream plant elements Break age can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death e Always pay attention to the correct direction of rotation when installing the pumps e Always pay attention to the correct direction of rotation when connecting the motors e Secure the fitting keys against flying off when monitoring the direction of rotation All data stated on the motor type plate must be checked for conformity to the required operating data Adjust the overload protection to the correct value Check the rotational drive direction of the pump before switching on BKF0097EN_D0024860002 05 2011 09 06 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 7 Operation start up 7 1 54 Preparation Hazard caused by rotating parts Rotating parts can cause accidents w
16. not operate the device without safeguards Danger due to exposed gears Gears can pull in and crush or cut off fingers and hands e Do not reach into the gears e Put the device into operation with connected lines only 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT BKF0097EN_D0024860002 05 Danger due to falling loads 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 Compliance with applicable industrial safety requirements is mandatory Use only suitable means of conveyance and lifting tackle with sufficient load bearing capacity Attach lifting tackle only to suitable points see table 5 1 and table 5 2 Attach the lifting tackle in such a manner that it cannot slip The device s centre of gravity must lie between the lifting tackle mount ing points on the device 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 2011 09 06 11 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Danger due to hot surfaces When operating the device with hot media there is a danger of being
17. optimisation are only feasible for one rotational di rection and only effective for aerated oils or vacuum 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 4 Technical data 4 1 KRACHT General characteristics Tab 4 1 General characteristics KF 3 63 KF 6 730 General characteristics KF 3 63 KF 6 730 Construction External gear pump Material See section 4 4 Overview materials Fixing type Flange mounting mounting angle End of drive shaft See Technical data sheets Pipe connection Flange connection threades connection welding connection see Technical data sheets Installtion position KF 3 63 KF 6 730 without quench Arbitrary KF 3 63 KF 6 730 with quench Horizontal quenching connection on top KF 3 63 KF 6 730 KF U Horizontal pressure connection on top Viscosity Vmin 12 mm s Vmax 15000 mm s Ambient tempera 9 min 20 C ture Iu max 60 C Speed n See section 4 2 Overview of nominal sizes Fluid temperature 9 Operating pressure p and Ppp See section 4 5 Operating pressure and fluid temperature Filtering Filter porosity lt 60 um Permissible media Fluids without abrasive components which are compatible with the pump materials used The fluids must guarantee minimum lubrication Media specific characteristics must be taken into account
18. possibility that the suction line A can run dry if the pump stops piping the suction line as siphon is an option to avoid suction problems This way the pump will Q remain permanently filled after initial com missioning The air in the pressure line can be conduc ted directly into the tank via a nozzel see section 6 5 2 Pressure line OH It is appropriate to employ a foot valve or a non return valve in case of longer suction lines that can run dry while the pump is at rest These must have been designed for use in suction lines and should offer as low a flow resistance as possible Tab 6 8 Suction line at vacuum operation If the pump is to intake from a tank under vacuum the pump must be arranged ap prox 0 8 m below the tank The suction line must run in a straight line and without any resistances The tank may be subjected to vacuum only 1 then when the pipework and the pump have been filled with liquid For this application only pumps designed as a vacuum system may be employed Q Malfunction due to excessive underpressure Undercutting the permissible underpressure can lead to a decrease in the delivery rate due to short filling of the pump high noise emission and cav itation Furthermore in shaft seals the sealing lip can lift up allowing air to be sucked in e The permissible pressure at the pump inlet shall not be lower than value Pe min as stated in the chapter 4 Technical da
19. pump KF BKF0097EN_D0024860002 05 2011 09 06 41 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 6 5 Design of suction and pressure line AN 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 e Comply with each manufacturer s regulations NOTICE Danger of property damage due to distortion The load on the device due to impermissible external loads can lead to malfunctions or to breakage of the flange or housing Pipelines must be fitted absolutely tension free to the device connec tions Pipelines must be designed in such a way that no tension e g caused by changes in length due to fluctuations in temperature can be trans ferred to the device NOTICE Danger of property damage caused by foreign bodies in the device During installation when using unsuitable sealing materials foreign bodies can get into the interior of the device or the plant due to a lack of cleanliness and cause malfunctions there During installation do not use any hemp or filler as sealing material gt Suction and pressure hoses Installation of suction and pressure hoses diminishes the noise level of hydraulic systems Some hose manufacturer offer special h
20. right after commissioning e Adapt the scope and time between maintenance intervals to the de mands posed by the location During visual inspections look purposefully for possible damages The device must not be used if visible damages are found e Document the type and extent of the maintenance work That allows the fastest possible detection of a change in operating performance When designed to the conditions of use and fitted correctly the devices are able to be used for long and problem free operation They only require a little maintenance This is absolutely essential for problem free operation howev er Experience shows that a high percentage of the problems and damage that occur can be traced back to dirt and lack of maintenance The scope and time intervals for inspections and maintenance are generally specified by the operator in a respective plan N Barriers and instructions e All removed barrieres and warning signs must be put back to their orig inal position on completing maintenance and or repair gt Checking the operating data e Regular checking of all operating data such as pressure temperature current consumption degree of filter soiling etc contributes to early problem detection BKF0097EN_D0024860002 05 2011 09 06 63 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Danger of property damage due to a lack of cleanliness A lack of cleanliness can lead to damages and malfunctions in the device
21. the device due to impermissible external loads can lead to malfunctions or to breakage of the flange or housing Pipelines must be fitted absolutely tension free to the device connec tions Pipelines must be designed in such a way that no tension e g caused by changes in length due to fluctuations in temperature can be trans ferred to the device BKF0097EN_D0024860002 05 2011 09 06 KRACHT 52 Transfer Gear Pumps KF 3 63 KF 6 730 Connect suction and pressure side according to the marking on the pump or the information on the type plate see section 6 3 Definition of the direction of rotation and pumping flow Connect the pipework to the suction and pressure piping Always heed the respective manufacturer s instructions Mount a suitable tank for the liquid seal see chapter 7 Operation start up if applicable when operating the pump with liquid seal quench Danger due to breakage or squirting fluids Operating the device with impermissibly high pressures can lead to damage to the device and to the up or downstream plant elements Breakage can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death e Never allow positive displacement pumps to pump against closed gates e A pressure relief valve or other kind of over pressure safeguard must be installed as close as possible to the pump pressure con
22. through thermal shock Proper function indicated by noise generation or on the pressure gage should be reached after max 30 seconds First of all run the pump at zero pressure or low pressure for a couple of minutes after switching on the motor Bleed the plant on the distribution pipes preferably at the highest point Pressure loading can be gradually increased up to the desired operating pressure max permissible pressures see chapter 4 Technical data Check the temperature of the medium and that of the pump after the intended operating characteristics have been reached Checkpoints on the pump are the bearing locations the housing and the shaft seal The temperatures observed on the pump surface may be approx 10 C above medium temperature Check the fluid level of the plant once more and top up if necessary Check the final operating temperature after several hours running time see chapter 4 Technical data for max permissible temperatures Check the static seals on the suction and pressure connections and the pump s joints for leakages Check the threaded connections for leakages Such leakages can be easily eliminated by simply retightening the threaded connections Also check all motor and pump fastening screws after a few hours of operation 2011 09 06 BKFO097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 8 Removal 8 1 General points Danger of property damage due to insufficien
23. 0024860002 05 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 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 2011 09 06 7 KRACHT 2 4 Hazard statemen Transfer Gear Pumps KF 3 63 KF 6 730 ts Danger due to breakage or squirting fluids Operating the device with impermissibly high pressures can lead to damage to the device and to the up or downstream plant elements Breakage can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death e Do not put the device into operation without a pressure relief device Never allow positive displacement pumps to pump against closed gates A pressure relief valve or other kind of over pressure safeguard must be installed as close as possible to the pump pressure connection The pressure relief device must be dimensioned so that the entire delivery volume can be conducted through it with the lowest possible pressure or must be depressurized
24. 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRACHT Tab 3 5 Basic construction KF 3 63 KF 6 730 DKF Description 1 Socket head cap screw Valve cover Housing Shaft Plain bearing bush Driven shaft Gear o ee ho oes Parallel key 9 O Ring 10 Flange cover 11 Retaining ring 12 Roller bearing 13 O Ring 14 Socket head cap screw 15 Rotary shaft lip seal 16 Seal retainer 17 Parallel key 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 See section 3 3 Type of seals for further seal types BKF0097EN_D0024860002 05 2011 09 06 Valve cone Compression spring Distance tube Guide sleeve O Ring Cap screw Spring guide Hexagonal nut Set screw Protection cap Gasket Centering sleeve Stud Hexagonal nut Centering sleeve Socket head cap screw 17 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 3 2 3 KF 3 63 KF 6 730 KF U with universal valve Tab 3 6 Basic construction KF 3 63 KF 6 730 KF U EAN eee F NIS E NSSE LEE aT L A 4 5 6 7 8 9 10 11 12 43 14 15 21 22 23 24 25 16 17 18 19 20 26 27 28 29 30 31 ZZZ mie Pez A 1 lesen 2 gt pa man ee AG ZZ GG i x im rare Alan i E SNS EZ KK View without connection elbow View without universal device 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF
25. 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 7 2 2 Seal variants with liquid seal Tab 7 1 KF 3 63 KF 6 730 with liquid seal quench Sealing materials 1 2 Sealing materials 1 2 Special numbers 44 261 Special numbers 74 309 57 2 E A i ae jell INS a aZ Sealing numbers 1 2 Sealing materials 39 40 Special number 94 BKF0097EN_D0024860002 05 2011 09 06 57 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 7 3 Setting the pressure relief valve Applies for pumps with built on pressure relief valve Type designation KF DKF Fig 7 1 Pressuer setting KF 3 63 KF 6 730 DKF response pressure higher response pressure lower Danger of the pump overheating The series D pressure relief valves are exclusively used to protect the pump The valves must only respond for short durations Permanent drain ing of the volumetric flow through the valve will destroy the pump through overheating e Make sure the valve responds only briefly For pressure setting on the pressure relief valve see figure 7 1 e remove the protection cap 3 e loosen the hexagon nut 2 e adjust set screw 1 clockwise response pressure higher counterclockwise response pressure lower e secure the set screw 1 using hexagon nut 2 once the desired pressure has been adjusted e _refasten the protection cap 3 58 2011 09 06 BKFO097EN_D0024860002 05
26. Operation instructions BKFO097EN Transfer Gear Pumps KF 3 63 KF 6 730 BKF0097EN_D0024860002 05 KR Al HT Englisch 2011 09 06 Table of Content 1 General points 5 1 1 About the documentation 5 1 2 Manufacturer s address 5 1 3 Intended use 5 2 Safety 7 2 1 Safety instructions and symbols E 2 2 Staff qualification and training 7 2 3 General safety instructions 7 2 4 Hazard statements 8 3 Device description 13 3 1 General points 13 3 2 Basic construction 14 3 2 1 KF 3 63 KF 6 730 with end cover 14 3 2 2 KF 3 63 KF 6 730 DKF with pressure relief 16 valve 3 2 3 KF 3 63 KF 6 730 KF U with universal valve 18 3 3 Type of seals 20 3 4 Type key 22 3 5 Important special numbers 24 4 Technical data 25 4 1 General characteristics 25 4 2 Overview of nominal sizes 26 4 3 Permissible speed 27 4 4 Overview materials af 4 5 Operating pressure and fluid temperature 28 4 6 Dimensions 31 5 Transport and storage 32 5 1 Transport damage 32 5 2 Transport 32 5 3 Corrosion protection 34 6 Installation 35 6 1 General points 35 6 2 Noise reduction 36 6 3 Definition of the direction of rotation and pumping 36 flow 6 3 1 KF 3 63 KF 6 730 with end cover or pressure relief 37 Valve 6 3 2 KF 3 63 KF 6 730 KF U with universal valve 38 6 4 Change of the direction of rotation 38 6 4 1 Change of direction of rotation of pumps in standard 39 version 6 4 2 Change ofthe direction of r
27. Petrols solvents etc are not permissible A reduced service life must be expected for the shaft seal when vertically installed Lower viscosities only in connection with GJS housings and reduced pressures consult manu facturer BKF0097EN_D0024860002 05 2011 09 06 25 KRACHT 4 2 Overview of nominal sizes Transfer Gear Pumps KF 3 63 KF 6 730 Tab 4 2 Overview of nominal sizes KF 3 63 KF 6 730 Nomi Geom Speed Permis Permis Sound Weights nal deliv sible ra sible ax level kg i Bie STEN el Lpa withcov with with uni vol rpm rpm force force db A er DKF versal ume Fradial Faxial valve device Vg N N cm n 1450 n 1450 rpm rpm 3 63 63 8 lt 75 12 13 5 32 3 80 81 3 lt 76 13 5 157 33 5 200 2000 1500 200 3 100 100 8 lt 76 13 5 15 34 3 112 112 6 lt 77 15 16 5 35 5 18 5 20 39 lt J 4 125 129 lt 78 aoe 214 5 40 5 20 21 5 40 4 150 153 200 2000 1500 200 lt 79 21 5 og 4150 21 21 5 41 4 180 184 lt 80 20 5 Dgr 42 5 28 30 80 5 200 204 lt 81 30 gore gor 33 35 85 lt 5 250 255 200 2000 2000 300 lt 82 gge gro g7 33 35 85 5 31 5 321 lt 82 35 37 87 51 59 103 6 400 405 S 82 54 62 1 06 55 63 107 lt 6 500 505 2000 lt 83 5gr 66 110 200 3000 500 65 73 117 6 630 629 lt 84 68
28. Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Danger due to breakage or squirting fluids When Hexagon nut 2 is loose Setscrew 1 can be screwed into the valve until the valve is completely shut That can result in inadmissibly high pres sures in the system if there is no other pressure relief device Breakage can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death Fluid can spurt out from the valve if Setscrew 1 is completely screwed out That can lead to accidents with severe injuries or result in death e Never operate the unit with Hex nut 2 loosened e Never completely screw Setscrew 1 into the valve e Never completely unscrew Setscrew 1 out of the valve BKF0097EN_D0024860002 05 2011 09 06 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 7 4 Further operation start up 60 The pumps may only start without or with low pressure load For this purpose open the existing shut off elements and adjust the pressure relief valve incorporated in the pressure pipe to the lowest opening pres sure Start up takes place by repeated quick on off switching of the driving motor jog mode without reaching full speed until proper operation of the device is evident This applies particularly when a cold pump is to start with already heated medium The reason for this is to achieve slow heat ing of the pump and prevent the pump seizing
29. cover or the pressure relief valve respectively from the pump housing and put it back on rotated by 180 e Tighten all fastening screws applying the below mentioned tightening torques see table 6 4 When checking pay attention to the following points e Pumps without pressure relief valve must have their leak oil hole on the interior cover side at the pump s suction side e Pumps with pressure relief valve must have their pressure relief valve adjusting screw point toward the pump s suction side BKF0097EN_D0024860002 05 2011 09 06 39 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Tab 6 4 Tightening torques for cover and valve fastening screws KF 3 KF 4 KF 5 KF 6 Nominal size 20 5 Nm 20 Nm 45 5 Nm 45 5 Nm Tightening torque See type key and type designation at pump KF 6 4 2 Change of the direction of rotation of pumps in noise optimized version Danger of damage to the unit The housing and flange cover are fixated to each other with centring bush ings Ifthe bearings are damaged when assembling or dismantling the housing e g by bending out of line there could be malfunctions and a de crease of the service life Furthermore the seal faces on the housing and flange cover could be damaged That can lead to leaks during operation e When mounting and dismantling the housing do not damage the hous ing e g by bending out of line e When dismantling the housi
30. d in the plant with mineral hydraulic oil Then all connections are closed The remaining residual oil protects the interior parts for about 6 months Clean bare outer metal parts have also been protected by anti corrosive oil or protective metal paint for a period of 6 months against corrosion The device must not be exposed in the influence of the weather and major fluctuations in temperature during transport and storage and must be stored in a dry place If the device is stored over a longer period it must be treated on the inside and outside with a suitable corrosion protecting oil In addition it must be protected from humidity by a humidity absorbing agent If high air humidity or aggressive atmosphere is to be expected during trans port suitable corrosion prevention measures must be carried out Corrosion damage on units with EPDM seals The functionality of units with EPDM seals is not tested There is no pres ervation of the interior parts Ifthe unit is not put into operation immediately corrosion damage can occur e Protect the unit by using suitable corrosion preventing measures Chemical impact on the device and the sealing materials Incompatibility between the preservation agents and the materials and elastomers used in the device can lead to damage of the device and the seals being used e Check to make sure the preservation agent is compatible with the ma terials and elastomers used in the device e Check to ma
31. e 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 1 3 BKF0097EN_D0024860002 05 Intended use Kracht GmbH GewerbestraBe 20 DE 58791 Werdohl phone 49 0 23 92 935 0 fax 49 0 23 92 935 209 email info kracht eu web www kracht eu The device is a pump for continuous delivery of liquids The various seal var iants and materials enable use with different media The device has been designed for operation with fluids Dry operation is not permitted The medium must guarantee a minimum lubrication The medium must not contain any abrasive constituents Petrols solvents etc are not permissible Use in explosive areas is not permissible The operator must guarantee that the medium to be conveyed is compatible with the materials used in the device see Overview materials in the chapter 4 Technical data Chemical expertise is required for that 2011 09 06 5 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 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 t
32. e filling level should rise the inner shaft seal may probably be leaking and the confining fluid is begin mixed with the pressurised medium Stop plant operation immediately in both cases 9 6 Rotary shaft lip seal 66 Rotary shaft lip seals are particulary prone to wear for functional reasons and must accordingly be carfully checked Excessicely high supply pressure or negative suction pressure wrong rotational direction or pollution leads to in creased wear increased and impermissible temperature rises Small amounts of leakage however are indispensable for function The per missible amount of leakage though is highly dependet on the operational conditions and cannot be quantified If there are excessive amounts of leakage stop pump operation immediately Replace the rotary shaft lip seal 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Increased wear on the rotary shaft lip seal should be taken into account in the case of vertical pump installation 9 7 Mechanical seal 9 8 Clutch 9 9 Screw joints 9 10 Damage Mechanical seals are particularly prone to wear for functional reasons and must accordingly be carfully checked Too high admission pressure wrong rotational direction frequent star ups gas or air portions in the oil or contam ination lead to increased wear increased leckage and impermissible tem perature rises Small amounts of leckages however are indispensabl
33. e for mechanical seal function The permissible amount of leackage though is highly dependent on the operational conditions and cannot be quantified If there are excessive amounts of leakage stop pump operation immediately Replace the mechanical seal In so doing heed the assembly instructions of the mechanical seal manufacturer Increased wear on the mechanical seal should be taken into account in the case of vertical pump installation Clutches must be maintained according to the specifications of the respective manufacturer All the screw joints must be checked at regular intervals to make sure they are tight fit Loose screw joints must be tightened and if necessary secured against loosening by e g Loctite medium stregth Check the pump as well as its environment regularly for damage such as dents in the clutch guard 9 11 Surface temperature BKF0097EN_D0024860002 05 For identifying premature wear or pump overload it is useful to check the temperatures on the pump surface at regular intervals 2011 09 06 67 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 This temperatures should never be much higher max 10 C than the media temperature at the pump inlet Checkpoints on the pump are the bearing lo cations the housing and the shaft seal If the measured temperatures are higher than the permissible values this is an indication of wear or bearing damages The pump must be replaced in this case 9 12 Beari
34. eal with FKM sec 39 Mechanical seal with FKM secon ondary seal dary seal and connection for liquid quench 30 Mechanical seal with PTFE 40 Mechanical seal with PTFE secon secondary seal dary seal and connection for liquid quench 14 Special number for specific types See section 3 5 Important special numbers 15 Size DKF DKF 3 DKF 4 DKF 5 DKF 6 Size KF 16 Housing material and seal DKF A Housing EN GJL 250 G Housing EN GJS 400 15 sealing NBR sealing NBR Cc Housing EN GJL 250 L Housing EN GJS 400 15 sealing copper sealing FKM D Housing EN GJL 250 sealing FKM 17 Pressure setting ranges 04 2 4 bar 16 8 16 bar 08 4 8 bar 25 16 25 bar 18 Universal valve KF 3 KF 4 U 04 KF 5 250 KF 5 U 07 KF 4 KF 4U 05 KF 5 315 KF 5 U 07 KF 5 200 KF 5 U 06 KF 6 KF 6 U 08 BKF0097EN_D0024860002 05 2011 09 06 23 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 3 5 Important special numbers Tab 3 11 Important special numbers KF 3 63 KF 6 730 Special number Description 44 Pump with double rotary shaft lip seal for liquid seal quench sealing effect of the radial shaft seals on the product side 74 Pump with double rotary shaft lip seal for vacuum operation and connection for liquid seal quench inner rotary shaft lip seal mounted with sealing lip towards shaft
35. h the manufacturer is necessary for deviating operating conditions The displacement data may only be used individually in each case and in case of simultaneous appearance in proportion only Increasing the service life of the coupling e Careful and exact shaft alignment inreases clutch life 2011 09 06 47 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Fig 6 1 Displacements aligning the clutch ES E L _ AKs Clutch clearance E Shaft with parallel key extends into the gear rim d Tab 6 10 Types of coupling 19 24 28 38 42 48 55 65 75 Type of coupling 19 24 24 28 28 38 38 45 42 55 48 60 55 70 65 75 75 90 Clutch clearance E 16 18 20 24 26 28 30 35 40 Dimension 2 2 2 5 3 3 3 5 4 4 5 5 Dimension du 18 27 30 38 46 51 60 68 80 Dimension dvi 12 20 22 28 36 40 48 55 65 Max axial displace AK 1 2 1 4 1 5 1 8 2 0 2 1 2 2 2 6 3 0 ment Max radial displace AK 0 20 0 22 0 25 0 28 0 32 0 36 0 38 0 42 0 48 ment n 1500 1 min Max angular dis AK 12 09 0 9 10 10 14 1 1 1 2 128 placement n 1500 rpm Example RA19 Z25 14 Z25 19 or RA19 24 Z25 14 Z25 24 Dimensions in mm 48 Danger of property damage when mounting other types of couplings If other coupling types are used when mounting the coupling the instruc tions from the respective manufacturer is bi
36. he 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 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 2 Safety 2 1 Safety instructions and symbols A 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 Identification of a potential medium risk hazard which would 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 A BKF0097EN_D
37. he pump connection Expansion of the suction cross section e Funnel shaped formation of the suction port at the pump suction side or obliquely cutting the suction pipe end is recommended of enlargement of the suction cross section When hose lines are used on the pump suction side care must be taken to ensure thatthe hoses are sufficient stability so that they will not be constricted through the sucking action The media specific data need to be observed for example the device must be arranged below the fluid level in case of aqueous dispersions and solu tions Danger of property damage when pumping aqueous fluids When pumping aqueous dispersions or solvents low pressure on the inlet port can lead to cavitation damage on the pump e Comply with the media specific attributes e When designing the inlet line make sure the inlet port pressure on the pump inlet during operation is always higher than the steam pressure of the pumping fluid While doing so also take the altitude of the site of the device over mean sea level into consideration e For aqueous dispersions and solvents limit the operating temperature to max 50 C install the pump underneath the liquid level and limit the rotational speed to maximal 1500 rpm 2011 09 06 43 KRACHT 44 Transfer Gear Pumps KF 3 63 KF 6 730 The recommended flow velocity in the suction line is max 1 5 m s Tab 6 7 Piping the suction line as siphon If there is a
38. her the viscosity Gear pumps are self priming within wide limits The displacement cycle de scribe initially takes place without exhibiting appreciable pressure build up Only after setting external loads for example through delivery head outlet resistances line elements etc the required working pressure will arise to overcome these resistances As usual with so called rigid pumps i e non axial play compensated pumps the lateral clearance between gear and front face has been set in such a way that the maximum allowable operating pressure is managed in an adequate and secure way The medium lubricates the pump s friction bearings and shaft seal The pump s operating life will be reduced if the medium contains abrasive ingre dients The shaft sealing pocket is connected to the pump s suction side Therefore the max permissible suction side pressure is dependent on the type of seal Tab 3 1 Functional principle external gear pumps GER oe Yancy BOY PON Pe Suction side Pp Pressure side Pb gt N Ve Y BKF0097EN_D0024860002 05 2011 09 06 13 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 3 2 Basic construction 3 2 1 KF 3 63 KF 6 730 with end cover Tab 3 2 Basic construction KF 3 63 KF 6 730 1 2 3456 78910 1 12 13 14 15 16 17 SN MT 7 EH In Y VEREIN BI eZ R A gt El 22 23 24 SS eN 77 kaasas LLAN Y N NDZZA
39. ighly flexi ble suction hoses for this purpose e Lay pressure hoses in sufficiently large radii 6 5 1 Suction line NOTICE Malfunction due to incorrectly designed inlet line Due to excessive underpressure an incorrectly designed inlet line can lead to a reduction of the delivery rate increased noise emissions and cavitation Design the inlet line with extreme care since it will strongly influence the pump s performance 42 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT BKF0097EN_D0024860002 05 The suction line must be piped as short as possible and in a straight line Avoid large suction heights Additional line resistance such as formed parts fittings and closed meshed suction filters increase the pipe resistance of the suction line and must be avoided The negative pressure in the suction line is calculated from the sum of all suction side resistances and the suction height considering the media spe cific data Check the underpressure e The negative pressure can be controlled by fitting a vacuum gauge to the pump suction line connector Ensure proper suction when piping the suction line and the distances to the floor and to the bulkhead partitions must be sufficiently large The inlet port must have a sufficient distance to the lowest fluid level Nominal width of the suction line e The nominal width of the suction line may actually be selected to be larger than t
40. igned or loose clutch Axial clutch clearance insufficient Clutch overloaded Temperature too high Magnetic coupling torn off Magnetic coupling under dimensioned Pressure too high Driving motor oversized Too high starting torque Too high operating temperature Pump is blocking due to foreign objects Short opera Wear on tional lives bearing gear and housing parts Wear through abrasive components Wear due to poorly lubricating medium Too low viscosity Check corrosion material compatibility Too high operating pressure for the media properties BKF0097EN_D0024860002 05 2011 09 06 73
41. ing aqueous dispersions or solvents low pressure on the inlet port can lead to cavitation damage on the pump e Comply with the media specific attributes e When designing the inlet line make sure the inlet port pressure on the pump inlet during operation is always higher than the steam pressure of the pumping fluid While doing so also take the altitude of the site of the device over mean sea level into consideration e For aqueous dispersions and solvents limit the operating temperature to max 50 C install the pump underneath the liquid level and limit the rotational speed to maximal 1500 rpm 4 6 Dimensions Dimensions of the device can be found in the relevant technical data sheets BKF0097EN_D0024860002 05 2011 09 06 31 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 5 Transport and storage 5 1 Transport damage Inspect the device for shipping damage as soon as the delivery has been received If shipping damage is discovered inform the shipping company If proper operation of the device is impaired by the damage the device must be replaced or repaired In that case contact the manufacturer 5 2 Transport Danger due to falling loads 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 e Compliance with applicable industrial safety requirements is mandatory e Use only suitable means of conveyance a
42. ith respect to the rotation and delivery direction of external gear pumps in case of pump connections being posi tioned below the drive shaft Looking at the pump shaft end the Looking at the pump shaft end the pumping flow is from left to right when pumping flow is from right to left when the shaft is moving clockwise the shaft is moving counterclock wise Without pressure relief valve Pe suction connection Pp pressure connection With pressure relief valve Pe suction connection Pp pressure connection BKF0097EN_D0024860002 05 2011 09 06 37 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 6 3 2 KF 3 63 KF 6 730 KF U with universal valve Tab 6 2 Rotation and delivery direction KF 3 63 KF 6 730 KF U With ragard to the direction of rotation and pumping flow of pumps KF 3 63 KF 6 730 KF U the following definition shall apply then locking at the pump shaft end Direction of rotation right and left Direction of dis charge consistent Pe suction connection Pp pressure connection 6 4 Change of the direction of rotation Change of the direction of rotation in the case of KF 3 63 KF 6 730 with the direction of rotation code 1 or 2 i e pure clockwise or counterclockwise ro tating pumps is only possible by converting the pump The manufacturer normally carries out the conversion work and the customer should do this only in case of an emergency It is not p
43. ith severe injuries or result in death due to body parts hair or clothing getting caught or wrapped up e Protect rotating parts e g coupling and shaft ends against uninten tional contact e Close any maintenance openings when using bell housings e Do not operate the device without safeguards Danger due to exposed gears Gears can pull in and crush or cut off fingers and hands e Do not reach into the gears e Put the device into operation with connected lines only Danger due to hazardous fluid Danger of death upon contact with hazardous fluids and when inhaling va pours from these liquids e Comply with the safety data sheets and regulations on handling the hazardous liquids e 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 Danger due to hot surfaces When operating the device with hot media there is a danger of being burned and scalded when touching the hot surfaces e At medium temperatures above 60 C take measures against uninten ded contact e Wear safety gloves 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Danger of property damage due to incorrect commissioning Improper commissioning can lead to damages and malfunctions in the de vice and in the plant Per
44. ke sure the preservation agent is compatible with the media to be pumped 34 2011 09 06 BKFO097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 6 Installation 6 1 General points Hazard caused by rotating parts and fluid squirting out During all work on the device rotating parts and squirting fluids can lead to accidents and severe injuries or even restult in death Depressurize all connections lines during all work on the device Depressurize or disconnect the driving motor during all work on the de vice Securely prevent the motor and device from restarting during work Oo e Wear suitable protective clothing Danger of property damage due to insufficiently qualified personnel Improper work can lead to damages and malfunctions in the device and in the plant Permit only expert and technically qualified personnel to work on the device NOTICE Danger of property damage due to a lack of cleanliness During installation foreign bodies can get into the interior of the device or the plant due to a lack of cleanliness and cause malfunctions there e Pay attention to cleanliness during all work BKF0097EN_D0024860002 05 2011 09 06 35 KRACHT 6 2 Noise reduction Transfer Gear Pumps KF 3 63 KF 6 730 er Measures for sound optimizing In view of optimising noise protection it is advisable to mount a bell housing with vibration damper between pum
45. mit only expert and technically qualified personnel to work on the device Comply with the permissible operating data such as rotational speed pressure temperature permissible media etc see chapter 4 Techni cal data Pay attention to cleanliness during all work Before starting the system make sure that a sufficient quantity of the service fluid is extant to avoid dry running Before starting the plant pumps and inlet line must be filled with oper ating fluid to prevent damage to the pump and the shaft seal during dry runs That also guarantees pump suction For pumps with liquid seal quench fill the sealing cavity with a suitable confining fluid before it is used for the first time Make sure that all lines and connections are tight and that no leakages can occur or air can be sucked in BKF0097EN_D0024860002 05 Check the permissible operating data against the operating states to be expected Check all fastening screws on the device Fill the pump and suction line with the operating fluid In the case of pumps with liquid seal quench fill the sealing cavity using an appropriate confining fluid see section 7 2 Pumps with liquid seal quenching connection Checking the direction of rotation See section Change of the direction of rotation in chapter 6 Installation for any change in rotational direc tion 2011 09 06 55 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 7 2 Pumps with liquid
46. n at pump KF For version in EN GJS 400 15 type designation KF VP 2011 09 06 27 BKF0097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 4 5 Operating pressure and fluid temperature Tab 4 5 Operating pressure suction side and fluid temperature KF 3 63 KF 6 730 Seal type Operating pressure Fluid temperature Suction side Pressure side Inn Basen Pe min Pe max Pb Pb max C C bar abs bar bar bar 1 j 90 2 150 29 10 150 10 30 200 0 6 32 200 0 5 37 30 150 39 150 10 40 200 1 74 90 See table 4 6 2 74 150 1 94 90 0 1 0 2 2 94 150 10 1 191 ke 2 191 150 1 196 gogx like operating presssure at press 90 2 196 uer side 150 1 309 90 0 1 0 2 2 309 150 See type key and type designation at pump KF Heed restriction Of Pe min for universal design KF U see table 4 7 Temporary during starting state 0 4 bar absolute 28 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Tab 4 6 Operating pressure at pressure side KF 3 63 KF 6 730 Nominal size Operating pressure at pressure side P bar Pb max bar perm coninous pressure pressure peak 3 63 50 3 80 40 3 100 30 3 112 25 4 125 40 4 150 25 30 4 180
47. nated by straightforward tightening of the screw joints If the device itself is leaking the respective seals have to be replaced 10 3 Elimination of damage Repair damage onsite predominantly by replacing the defective device The device itself is generally repaired by the manufacturer If corresponding expertise and sufficient equipment is available the consum er or OEM can also make the repairs For support spare parts lists and sectional drawings are available They can be requested from the manu facturer Danger of property damage due to incorrect work and use of non original spare parts Improper work can lead to damages and malfunctions in the device and in the plant That also applies to the use of non original spare parts e Permit only expert and technically qualified personnel to work on the device e Use only genuine original spare parts 10 4 Return If the device has to be repaired or checked over the manufacturer s premises it must be packed suitably for transport In addition a safety data sheet for the medium used must be enclosed with the device In case of well known mineral oils at least the exact type description is required BKF0097EN_D0024860002 05 2011 09 06 69 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 If harding or agglutinative media are involved the device must be cleaned befor it is returned Cleaning is also necessary if the device has been operated with hazardous fluids
48. nd lifting tackle with sufficient load bearing capacity e Attach lifting tackle only to suitable points see table 5 1 and table 5 2 e Attach the lifting tackle in such a manner that it cannot slip e The device s centre of gravity must lie between the lifting tackle mount ing points on the device e Secure the device so that toppling over and falling down is impossible e Always avoid jerks impacts and strong vibrations during transportation e Never walk under suspended loads never work under suspended loads e To prevent damage to the device be extremely cautious when shipping or transporting e Wear suitable protective clothing 32 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT GEN Handling aid e When transporting individuals devices the eyebolts can be screwed into the connectiing flange as a handling aid Tab 5 1 Examples for safe transport of pumps Hazard from falling and tipping loads Due to the size and weight of the device accidents can occur resulting in severe injuries or death during transport and shipping e For pump devices do not use eyelets on the motor to transport the pump devices They can only support the weight of the motor Tab 5 2 Examples for safe transport of pump units BKF0097EN_D0024860002 05 2011 09 06 33 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 5 3 Corrosion protection The device s function is teste
49. nding e The respective manufacturer s installation instructions must be com plied with when using other coupling types 2011 09 06 BKFO097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 NOTICE Danger of property damage if installation is not correct When installing the respective coupling halves there is a hazard of dam aging the inegrated bearing or other components e Do not knock onto the shafts during installation of the clutch halves gt Easing coupling installation e The hubs should be heated for mounting the clutch and slid onto the shaft while hot Using a pinion gear drive it must also be heated and slid onto the shaft end while hot Danger of property damage due to displacement of the coupling halves When the coupling hub is not secured against axial displacement on each shaft there is a danger that the coupling hub will shift during operation That can lead to a failure of the coupling e Prevent axial displacement on every coupling hub on cylindrical shafts with a threaded pin that presses against the fitting key or the shaft BKF0097EN_D0024860002 05 2011 09 06 49 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 6 7 Mechanical installation Hazard caused by rotating parts and fluid squirting out During all work on the device rotating parts and squirting fluids can lead to accidents and severe injuries or even restult in death e Depressurize all connectio
50. nection The pressure relief device must be dimensioned so that the entire delivery volume can be conducted through it with the lowest possible pressure or must be depressurized e Do not put the device into operation without a pressure relief device Danger due to hot surfaces When operating the device with hot media there is a danger of being burned and scalded when touching the hot surfaces e At medium temperatures above 60 C take measures against uninten ded contact e Wear safety gloves Danger of malfunctions through polluted medium When filling the storage tank with the medium impurities or small parts can get into the tank and cause damage or malfunctions on the unit and in the system e When filling the storage tank pay attention to the greatest possible cleanliness Before opening clean filler screw and shutoff on fluid transport and stor age tank Check media tank for contamination and clean if necessary On no ac count remove the filter screen on the filler neck or the filter insert during the filling process 2011 09 06 BKFO097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 e Filling the media tank with the prescribed fluid e Ensure sufficient filling of the media tank 6 8 Assembly with further components and devices Danger of property damage if installation is not correct Incorrect assembly with components or devices from other manufacturers can
51. ng do not lever in the joint with a screw driver or similar tools Tab 6 5 Change of the direction of rotation KF 3 63 KF 6 730 direction of rotation code 1 or 2 noise optimized version KF 3 63 KF 6 730 a ES EIN E sia NO Oy SAILS Fastening screws Leak oil hole Pp pressure connection Pe suction connection When changing the direction of rotation of the pump rotate cover or pressure relief valve and the housing 180 together e Loose fastening screws 40 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT Remove the pump housing respectively from the flange cover and put it back on rotated 180 Tighten all fastening screws applying the below mentioned tightening torques see table 6 6 When checking pay attention to the following points The grooves in the housing wheel chamber must be located on the de livery side of the pump Pumps without pressure relief valve must have their leak oil hole on the interior cover side at the pump s suction side Pumps with pressure relief valve must have their pressure relief valve adjusting screw point toward the pump s suction side Tab 6 6 Tightening torques for housing retaining nuts and bolts Nominal size KF 3 KF 4 KF 5 KF 6 Tightening torque 45 5 Nm 45 5 Nm 45 5 Nm 75 10 Nm See type key and type designation at
52. ng gear wheel chamber housing 68 Like shaft seals bearings gear and wheel chamber housings are wear items Wear largely depends on the occurring loads life cycle as well as type and proportion of solids in the medium Wear cannot be identified from the outside The condition of a pump however can be analysed by the volumetric effi ciency factor Decrease of the efficiency factor would normally indicate wear Therefore a check on all operating data such as delivery pressure temper ature drive data degree of filter contamination should also be carried out during maintenance work Further investigations into the cause are necessary in the event of major de viations gt 10 to the reference values This helps detecting premature pump failure in time The pump must immediately be taken out of service at a drop of delivery or pressure to 80 of the original values The achieved values at initial commissioning serve as reference in this case 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 10 Repairs 10 1 General points The term repairs covers e Troubleshooting in other words establishing damage determining and localising the reason for the damage e Elimination of the damage in other words eliminating the primary cau ses and replacing or repairing faulty components 10 2 Troubleshooting Leaks are the most frequent problem If these occure on the pipelines they can be elimi
53. ns lines during all work on the device e Depressurize or disconnect the driving motor during all work on the de vice e Securely prevent the motor and device from restarting during work e Wear suitable protective clothing Malfunctions due to leaking lines and connections Leaks can occur and air can be sucked in if lines or connections are not tight Suctioned air leads to a decrease of the delivery rate and foams up the medium e Make sure all lines and connections are tight Before installation the device must be checked for transport damage and soiling Any preserving agents must be removed before installation using ben zine or solvent Clean the pipework of dirt scale sand swarf etc prior to installation Welded pipes in particularly must be pickled or flushed Cotton waste must not be used for cleaning Mount clutch and clutch halves respectively to pump and drive see sec tion 6 6 Mounting the clutch Hazard caused by rotating parts Rotating parts can cause accidents with severe injuries or result in death due to body parts hair or clothing getting caught or wrapped up e Protect rotating parts e g coupling and shaft ends against uninten tional contact e Close any maintenance openings when using bell housings e Do not operate the device without safeguards Mount pump to bellhousing foot or housing and pay attention to careful alignment and correct fitting position
54. ossible to change the direction of rotation in pump types KF 3 63 KF 6 730 The device must be replaced N Guarantee and manufacturer responsibility e All warranty claims and manufacturer responsibility shall be void when improper conversation work takes place Danger of property damage due to incorrect installation Improper retrofitting can lead to damages and malfunctions in the unit and in the plant e Permit only expert and technically qualified personnel to work on the device 38 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT NOTICE Danger of leaks on the unit When altering the unit seals that are removed damaged or jammed can lead to leaks during operation e Do not remove damage or jam seals 6 4 1 Change of direction of rotation of pumps in standard version This description does not apply to pumps in noise optimized version for aer iferous oils and vacuum Their conversion is described in section 6 4 2 Change of the direction of rotation of pumps in noise optimized version Tab 6 3 Change of the direction of rotation of KF 3 63 KF 6 730 direc tion of rotation code 1 or 2 standard version Pe suction connection Fastening screws Pp pressure connection Leak oil hole In case of a pump s change of the direction of rotation the cover and or pres sure relief valve must be rotated through 180 Loose fastening screws Remove the
55. otation of pumps in noise 40 optimized version 6 5 Design of suction and pressure line 42 6 5 1 Suction line 42 6 5 2 Pressure line 45 6 6 Mounting the clutch 47 6 7 Mechanical installation 50 6 8 Assembly with further components and devices 53 6 9 Electrical connection 53 7 Operation start up 54 7 1 Preparation 54 7 2 Pumps with liquid seal quenching connection 56 7 2 1 General points 56 7 2 2 Seal variants with liquid seal 57 7 3 Setting the pressure relief valve 58 7 4 Further operation start up 60 8 Removal 61 8 1 General points 61 8 2 Disassembling the pump 61 9 Maintenance 63 9 1 General points 63 9 2 Unusual noise 65 9 3 Cleaning 66 9 4 Static seals 66 9 5 Confining fluid level 66 9 6 Rotary shaft lip seal 66 9 7 Mechanical seal 67 9 8 Clutch 67 9 9 Screw joints 67 9 10 Damage 67 9 11 Surface temperature 67 9 12 Bearing gear wheel chamber housing 68 10 Repairs 69 10 1 General points 69 10 2 Troubleshooting 69 10 3 Elimination of damage 69 10 4 Return 69 10 5 Disposal 70 10 6 Detecting and eliminating problems 70 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 1 1 1 General points About the documentation These operating instructions describe the installation operation and mainte nance of the transfer gear pump KF 3 63 KF 6 630 also referred to below as the device The device is manufactured in different versions Information about the ver sion concerned in the individual case can be found on th
56. p and motor as well as vibration damper between motor and mounting surface Suction and pressure piping must be able to move freely or it needs to be elastically suspended Installation of suction and pressure hoses diminishes the noise level of hydraulic systems Some hose manufacturers offer special highly flex ible suciton hoses for this purpose Installation of the pump above the liquid level diminished the noise level of hydraulic systems The pressure p on the pump s intake should be approx 0 8 0 9 bar absolute 6 3 Definition of the direction of rotation and pumping flow 36 Hazard caused by incorrect direction of rotation Operating the device with the incorrect direction of rotation can lead to damage to the device and to the up or downstream plant elements Break age can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death Always pay attention to the correct direction of rotation when installing the pumps Always pay attention to the correct direction of rotation when connecting the motors Secure the fitting keys against flying off when monitoring the direction of rotation 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 6 3 1 KF 3 63 KF 6 730 with end cover or pressure relief valve Tab 6 1 Rotation and delivery direction KF 3 63 KF 6 730 The following definition shall apply w
57. planation of type key KF 3 63 KF 6 730 1 Production name 2 Nominal size Vg KF 3 63 80 100 112 cm KF 4 125 150 180 cm KF 5 200 250 315 cm KF 6 400 500 630 730 cm 3 Flange mounting cover F KF 3 H KF 5 KF6 G KF 4 4 Direction of rotation 1 Right 3 Right and left 2 Left 5 Mounting equipment X Mounting angle 0 Without mounting flange 6 Construction of housing B Housing with flange connection 7 Shaft end P Cylindrical shaft end without outboard bearing N Cylindrical shaft end with outboard bearing M Cylindrical shaft end without outboard bearing reinforced R Cylindrical shaft end with outboard bearing reinforced shaft end shortened 8 2 shaft end 0 Without 2 shaft end 9 Endcover A For direction of rotation 1 or 2 0 Without end cover for valve fitting B For direction of rotation 3 10 Design serial number specified by manufacturer 22 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRACHT Explanation of type key KF 3 63 KF 6 730 11 Housing material and plain bearing D EN GJL 250 GG 25 with DU P10 bearing bushings V EN GJS 400 15 GGG 40 with DU P10 bearing bushings 12 Type of gear P Helical gear 13 Seal 1 Single rotary shaft lip seal NBR 32 Single rotary shaft lip seal PTFE 2 Single rotary shaft lip seal FKM 37 Single rotary shaft lip seal FKM low temperature only KF 3 P 29 Mechanical s
58. rrectly aligned or loose clutch Magnetic coupling defective Faulty or insufficient line fastening Wobbling pressure relief valve No noise optimized design missing dampers Unfavourable place of pump installation Pump worn out tooth flanks worn out Disturbances in pump operation Pump does not suck Too high negative pressure Fluid level in supply tank too low Magnetic coupling torn off Wrong direction of rotation Throttled shut off element in the suction line Suction line too long Suction line leaking Suction resistance too high Foreign objects in suction line Volume of pressure pipe between pump and non return valve too little pump cannot compress the air contained in the suction line Non return valve not bled Too high start up pressure if suction line is filled with air Speed too low Place of installation too high BKF0097EN_D0024860002 05 2011 09 06 71 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Fault Potential causes Insufficient delivery Too high negative pressure Throttled shut off element in the suction line Fluid level in supply tank too low Suction filter plugged or too small Too high viscosity Too low viscosity Too high speed Too high pressure Pressure relief valve set too low Pump sucks air Pump worn out Too high proportion of air in the oil Universal valve defective Place of installation too high Insufficient pressure Delivery too low work
59. seal quenching connection 7 2 1 General points Danger of the failure of the seal due to a lack of sealing fluid A lack of sealing fluid can lead to a failure of the shaft seal and to increased temperatures and increased wear e Fill the pump s sealing cavity with a suitable sealing medium The seal ing fluid must be compatible with the seals and materials used as well as with the pumping medium e The confining fluid s minimum and maximum filling level must be en sured using appropriate technical and or organisational measures e The liquid seal in the quenching connection must not be subjected to pressure or vacuum If fluids are delivered that cure in air crystallise in contact with air humidity the leakage of which must not be released into the environment are under vacuum and their seal shall be gastight than the employment of a double seal with liquid seal is necessary e A tank for the liquid seal is to be connected to the quenching connection Suitable tanks are available from the manufacturer e The tank for the liquid seal must be placed above the pump e The installation position is restricted and the quenching connection shall be directed upward e Check of the fluid level in the tank must be possible at any time er Flushing connection sealing cavity e A second port on the device enables purging of the sealing cavity and draining of the seal liquid 56 2011 09 06 BKFO097EN_D0024860002
60. see chapter 4 Technical data Tighten all fastening screws applying the torque as prescribed by the manufacturer of the bellhousing avoiding any twisting of the pump in the process without fail 50 2011 09 06 BKFO097EN_D0024860002 05 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Remove the protective plugs in the pump s suction and pressure con nections Danger due to exposed gears Gears can pull in and crush or cut off fingers and hands e Do not reach into the gears e Put the device into operation with connected lines only 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 e Wear suitable protective clothing Wet devices interiors with fluid being pumped 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 e Comply with each manufacturer s regulations Danger of property damage due to distortion The load on
61. t be selected such that the maxi mum permissible pressures are not exceeded The pressure must be checked by a manometer installed as closely as pos sible to the pressure connection To avoid pump overload caused by an impermissibly high pressure a pres sure relief valve or a rupture disc with return to the supply tank must be installed as closely as possible to the pump s pressure connection Another option of pressure limiting is to mount a pressure relief valve directly to the pump During operation of a pump that has to pump media via a non return valve in a pressurized circuit e g reserve pump in a lubricant circuit intake problems can occur if the inlet pipe is filled with air In this case the pressure pipe must be bled directly upstream of the non return valve This can be carried out by a bleeding valve with return or a throttled bypass for example KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 Tab 6 9 Bleeding valve and throttled bypass Bleeding valve with return Throttled bypass If none of the measures described is carried out the volume of the pressure pipe between the pump and the non return valve must be at least 75 of the inlet pipe volume 46 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 6 6 Mounting the clutch as BKF0097EN_D0024860002 05 Danger of property damage due to falsely dimensioned coupling An incorrect design can lead to premat
62. ta An exception to this is the pump s starting state during which a pressure of 0 4 bar absolute is tolerable for max 30 minutes 2011 09 06 BKFO097EN_D0024860002 05 Transfer Gear Pumps KF 3 63 KF 6 730 KRAC HT 6 5 2 Pressure line BKF0097EN_D0024860002 05 2011 09 06 Damage or failure of the shaft seal due to high supply pressure Exceeding the permissible supply pressure can lead to a failure of the shaft seal or to impermissible heating and increased wear e The permissible pressure at the pump inlet must not exceed the value Pe max as stated in the chapter 4 Technical data Danger due to breakage or squirting fluids Operating the device with impermissibly high pressures can lead to damage to the device and to the up or downstream plant elements Breakage can lead to parts flying around uncontrolled or to fluids squirting out which can lead to accidents and severe injuries or even result in death e Never allow positive displacement pumps to pump against closed gates e A pressure relief valve or other kind of over pressure safeguard must be installed as close as possible to the pump pressure connection The pressure relief device must be dimensioned so that the entire delivery volume can be conducted through it with the lowest possible pressure or must be depressurized e Do not put the device into operation without a pressure relief device The nominal width of the pressure line mus
63. the hot surfaces e Let the device cool off first when the medium temperature is over 48 C e Wear safety gloves Some damage is indicated by unusual noises If there is a change in the dec ive s operating noise a thorough examination of the cause must always take place BKF0097EN_D0024860002 05 2011 09 06 KRACHT 9 3 Cleaning 9 4 Static seals Transfer Gear Pumps KF 3 63 KF 6 730 The pump shaft as well as the associated hardware must not run in dust ac cumulations Regular cleaning of the device and its environment is therefore necessary Cleaning the device using a steam jet cleaner is not permissible The static seals on the device s separation joints and the connection lines must be periodically checked for leakproofness If there are any visible leaks immediately stop plant operation If the leaks cannot be stopped by simply retightening the connection replace all affected seals 9 5 Confining fluid level Checking the confining fluid filling level is mandatory for safe pump operation Top up the confining fluid as required If there is no automatic monitoring the filling level must be checked at least befor each shift begins The outer but also the inner shaft seal could be leaking if the filling level should drop unusually fast within a short period of time The confining fluid will then leak into the coupling space or it will be sucked into the pump thereby mixing with the medium If th
64. tly qualified personnel Improper work can lead to damages and malfunctions in the device and in the plant Permit only expert and technically qualified personnel to work on the device Danger of property damage due to a lack of cleanliness A lack of cleanliness can lead to damages and malfunctions in the device and in the plant e Pay attention to cleanliness during all work Close all openings with protective caps to prevent dirt from penetrating into the system 8 2 Disassembling the pump Hazard caused by rotating parts and fluid squirting out During all work on the device rotating parts and squirting fluids can lead to accidents and severe injuries or even restult in death Depressurize all connections lines during all work on the device Depressurize or disconnect the driving motor during all work on the de vice Securely prevent the motor and device from restarting during work Wear suitable protective clothing BKF0097EN_D0024860002 05 2011 09 06 KRACHT Transfer Gear Pumps KF 3 63 KF 6 730 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
65. ure failure of the coupling due to breakage or wear e When dimensioning the coupling pay attention to safe dimensioning to be able to transfer the expected maximum torque reliably and perma nently e Take the vibrations peak torques and temperatures into consideration The permissible values from the coupling manufacturer must not be ex ceeded e Comply with the coupling manufacturer s installation rules When mounting the clutch keeping the E measure exactly is of the essence so that the clutch will remain axially movable when used In order to avoid any frontal pressure against the elastic gear rim measure E should each be considered as minimum in the case of an axial displacement If the shaft clearance is less than clutch clearance E one of the shaft ends can easily extend into the gear rim Size dy corresponds to the max shaft diameter that may extend with the parallel key into the gear rim size d If there is the chance to offset the parallel key i e only the shaft extends into the gear rim the size of the shaft may be increased up to 2 mm below the specified dj size in order not to obstruct the gear rim in its axial movability The permissible displacement values of the elastic clutches stated represent general guide values taking a clutch loading up the the clutch nominal torque and an operating speed n 1500 rpm as well as an occurring ambient tem perature of 30 C into account Consultation wit

Operation instructions

Contents

Download Pdf Manuals

Related Search

Related Contents