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OPERATION AND MAINTENANCE MANUAL

QTS SERIES

Twin Screw Positive Displacement Pump

QTS-M

NNE

ANNEX B

Nut-and-Locknut Technique

The nut-and-locknut technique serves to prevent a nut from loosening by superimposing
another nut.

Thus it is possible to use as a fastening
device. This technique is useful to
remove and tighten the studs from the
gearbox.

To loosen both nuts two keys are used
likewise, now in the opposite direction.

Two keys are used to tighten a nut
against each other, making both nuts
fix so they can’t loosen.

Содержание QTS-M08

Страница 1: ...Operation and Maintenance Manual of Positive Displacement Pump QT S S e r i e s T w i n S c r e w P u m p www qpumps com QTS M08 support qpumps com Affiliated 02 11...

Страница 2: ...llignment 12 Pump Operation 14 Starting Up Procedure 14 Shutting Down Procedure 14 Restarting Procedure 14 Maintenance Pump Assembly and Disassembly 15 Tools and Spare Parts 15 Oil and Oil Change 15 E...

Страница 3: ...normal wear include but are not limited to standard rotors wear casing mechanical seals gears and bearings wear Accidents operating errors or improper maintenance are not covered by the warranty Q Pu...

Страница 4: ...ceive the equipment in poor condition or it is lost during transportation file a claim with the carrier immediately The transport service provider is responsible for collecting the goods Q Pumps ensur...

Страница 5: ...employing security practices such as signs guards approach alarms etc TEMPERATURE The main risk is associated with direct contact of hot or cold sources Operate the pump only in accordance with its sp...

Страница 6: ...s motors are used not supplied by Q Pumps Temperature The QTS Series are designed to work in a normal temperature range between 40 C 40 F and 100 C 212 F Be careful when touching the body and bearing...

Страница 7: ...Take precautions and follow the manufacturer recommendations to use the slings or straps When lifting assemblies motor gear motor coupled to the pump always try to lift them up simultaneously Make su...

Страница 8: ...ump reducing cost in additional equipment and timing Suction and discharge enlarged option available Totally drainable Even when running at high speed there is no rotor rotor body contact Meets 3A and...

Страница 9: ...armoloy 2 Casing armoloy and rotors SuperExpanite 3 Casing armoloy and rotors Kolsterising 4 Without hardening 5 Rotors only SuperExpanite 6 Rotors only Kolsterising 7 Casing and Rotors Expanite 8 Ca...

Страница 10: ...33 SS 21 M V Selected by ABC Revision A Customer Seal Single Mechanical Seal EXAMPLE SiC SiC FKM 7 20 2017 Quantity Application Data Ports Type Pumping Fluid Concentrate Front Tri Clamp Operating Poin...

Страница 11: ...onnection usually inlet 9 10 6 7 5 4 1 4 Pump casing 5 Back cover with port connection usually outlet 6 Bearing housing 7 Pump base plate NEMA IEC 9 Drive shaft 10 Gear case Pump Arrangements Assembli...

Страница 12: ...s of operation If your equipment is supplied with a variable frequency drive it s the result of an analysis of the applications of the pump please follow the data shown in the Data Sheet If you want t...

Страница 13: ...red space has to be equal at both sides of the coupling use shims in the pump base or motor base if needed Proceed to align the pump and drive parallel to the axis of rotation Use a straight edge in b...

Страница 14: ...In order to prevent cavitation check the valves in the suction side are fully open The valves on the discharge side are fully open to prevent overpressure inside the pump Security measures are taken...

Страница 15: ...the lower port as inlet and the top port as outlet each mechanical seal is independent the buffer pressure must be less than the process fluid pressure and the maximum buffer pressure is 80 psi 5 5 ba...

Страница 16: ...0 001 0 002 0 004 and 0 008 You may require these tools 1 Set of ball end hexagonal L keys in standard sizes 3 16 1 4 5 16 and 3 8 2 Socket wrench and set of six points hexagonal sockets 3 Wrenches 7...

Страница 17: ...M08 MAINTENANCE MAINTENANCE 11 2X 24 2X 26 2X 2 3 52 4X 21 4X 28 20X 5 12F Q 2X 13 6X 14 4X 29 2X 25 6X 31 4X 7 6 54 48 17 2X 40 12X 47 16 43 2X 44 2X 41 19 33 4X 18 51 2X 45 6X 49 50 23 2X 38 6X 15...

Страница 18: ...NCE 1 2 12A J 2X 3 6 8 9 15 2X 17 2X 10 41 42 18 46 6X 7 11 2X 14 4X 43 2X 21 4X 22 4X 26 2X 23 2X 25 2X 27 2X 28 2X 29 2X 31 4X 30 4X 32 53 4X 33 4X 35 36 4X 37 2X 38 6X 39 12X 40 12X 19 45 6X 20 47...

Страница 19: ...8 1 4 2 12A J 2X 3 6 8 9 15 2X 17 2X 10 41 42 18 46 6X 7 11 2X 14 4X 43 2X 21 4X 22 4X 26 2X 23 2X 25 4X 27 2X 28 2X 29 2X 31 4X 30 4X 32 53 4X 33 4X 35 36 4X 37 2X 38 6X 39 12X 40 12X 19 45 6X 20 47...

Страница 20: ...AINTENANCE 21 4X 22 4X 1 27 2X 11 2X 24 2X 26 4X 23 2X 4 32 2X 2 3 25 4X 12A J 2X 28 53 4X 13 8X 14 4X 29 2X 48 8 9 34 35 36 4X 37 2X 15 2X 38 6X 43 2X 44 2X 16 17 2X 41 42 39 12X 40 12X 18 19 20 45 1...

Страница 21: ...ew QTS HM4 Rectangular Inlet 21 4X 22 4X 1 27 11 2X 24 2X 26 2X 23 2X 2 3 28 2X 12A E 2X 12F Q 2X 4 13 8X 53 4X 14 4X 29 2X 25 4X 32 48 6 7 31 4X 30 4X 8 9 34 35 36 4X 37 2X 15 2X 38 6X 43 2X 44 2X 16...

Страница 22: ...oil seal 14 Stud 32 Eye bolt 50 Oil sight glass 15 Bearing spacer 33 Hexagonal bolt 51 Hex Plug 16 Gear spacer 34 Gear key 52 Dowel pin 17 Retaining flange 35 Coupling key 53 Flush nipple 18 Tapered d...

Страница 23: ...ation issues Removing the Rotors 1 Remove the cover nuts 21 and flat washers 22 use a wrench or a six points socket Remove the front cover 1 2 Take off carefully the front cover gasket 27 you may use...

Страница 24: ...e out 5 The objective is to loosen both nuts simultaneously to avoid contact between rotors 3 11 2 9 6 Remove the O rings 26 spring washers 23 and the rotor nut socket set screws 24 7 Take off the gas...

Страница 25: ...l seal should be installed using your hands only No special tools are required unless it is indicated You may use a hook to take out the O rings from their grooves Be careful not to scratch the seal f...

Страница 26: ...ooves and get stuck to other components 4 On the back cover 5 pull out the static face 12G and the O ring 12H Avoid any harsh contact on the sealing faces 5 To remove the seal housing 12J it is necess...

Страница 27: ...l housing 12J into the back cover It has a drag pin in the front for the static face 12G 3 Tighten the button head screws 13 to secure the seal housing in the back cover 4 Place the O ring 12H on the...

Страница 28: ...side groove of the stainless steel holder 12B Insert the springs 12C on the inside bores on the holder 11 Lubricate the inside diameter of the O ring 12E and place it on the inside groove of the holde...

Страница 29: ...eel rotary holder subassembly 12B F by grabbing and pulling out from the rotating face 12F When pulling the static face 12G might come together 2 To inspect the O rings inside remove the rotating face...

Страница 30: ...ct the seal housing Push with your thumbs from the front of the back cover Be careful when removing the housing to avoid any harsh contact 9 Take away the O ring 12K on the housing using the O ring ho...

Страница 31: ...ng on the shafts until the end shoulder and tight the set screws 4 Insert the O ring 12R into the groove on the rotating face of the secondary mechanical seal 12Q and slide them together on the shafts...

Страница 32: ...al and the static face of the secondary mechanical seal 13 Place the O ring 12H on the box of the back cover 5 14 Proceed to place the static face 12G in the back cover Make sure the notch is aligned...

Страница 33: ...ays be placed before running the pump Not doing so will cause severe damage to the pump 16 Fix the back cover to the bearing housing with the hexagonal socket head cap screws 28 and tighten them firml...

Страница 34: ...echanical seal failure to do so properly can cause damage to the mechanical seals and the rotors 20 Place the O ring 12A into the holder front groove to finish the rotary holder subassembly 21 With th...

Страница 35: ...he front faces are leveled Turn the drive shaft to the marks of the meshed rotors 9 and the rotors so the dots correspond 4 Slide the rotors together onto the shafts Some alignment might be needed By...

Страница 36: ...the back cover WARNING Dowel pins must always be placed before running the pump Not doing so will cause severe damage to the pump 11 Insert the casing 4 carefully it should be mounted and centered on...

Страница 37: ...drive shaft 9 6 51 10 35 6 51 10 35 Sincronizaci n de rotores Rotor Synchronization 9 10 47 33 9 10 47 33 3 Loosen the hexagonal bolts 33 and pull back the gear case Inside are the gears that drive th...

Страница 38: ...this step it is not necessary to assemble the complete seals it is just a preliminary assembly to set position It is recommended to remove the O rings 12A and 12D in the subassembly 8 Take the new ro...

Страница 39: ...he shaft shoulder and insert the tapered driven ring 20 back on the shaft Use a flat screwdriver if needed to open the ring Do not tighten yet 13 On the front of the pump equally distribute the space...

Страница 40: ...1 and mark the rotors with their corresponding marks on the shaft using indelible ink or by making a notch View original rotors spline as example 17 Remove the rotors and rotary holder subassemblies 1...

Страница 41: ...tate 2 Use a hook spanner or the special QTS adapter provided in the QTS tool bag to loosen the lock nut 3 Remove the lock nut and the lock washer At this moment the drive gear can be taken out whit i...

Страница 42: ...riven gear The tapered rings will come out too 3 Loosen and remove the screws 40 to take away the retention flange 17 4 The bearings are held in position by a lock nut 44 and a lock washer 43 Use a fl...

Страница 43: ...contact ball bearings 38 in the back and are separated by a bearing spacer 15 The needle bearings has an internal race that is kept in position by retaining rings 36 The ball bearings have to be arra...

Страница 44: ...nternal race of the needle bearing Support only the internal race IMPORTANT Use similar diameter rings or V blocks of softer metal to avoid damage to the shaft The shaft needs to have enough clearance...

Страница 45: ...t 4 Identify the thinner side of the bearing spacer 15 and insert it from the back of the shaft until it reaches the retaining ring 5 Place the shaft in the press supporting it with its first shoulder...

Страница 46: ...the bearing arrangement type 2 the ball bearing can be pressed by the inner or outer race 8 Insert the third bearing acording to the bearing arrangement and press by the inner race until it reaches t...

Страница 47: ...er 43 with the inner tab aligned with the shaft keyway 3 Put the bearing lock nut 44 and tighten with the QTS special adapter Use the torque value provided in the torque table page 19 The torque wrenc...

Страница 48: ...e provided in the torque table Don t forget the lock washers 39 3 Insert the gear spacer 16 until it touches the bearings 4 Place the gear key 34 in the shaft keyway and insert the drive gear 41 40 34...

Страница 49: ...ints female socket to loosen and tighten the rotor nuts to avoid indentations 6 The dowel pins surface finish is rectified If they are damaged replace them to prevent assembly problems 7 Synchronizati...

Страница 50: ...stem information available and verify the application Remember that your equipment was selected for a particular application and any other use without prior consent may result in damages that can avoi...

Страница 51: ...ed motor manual In some circumstances fluid running through pump can generate static electricity use of a grounding strap mitigates this risk High Temperature Pump alone will not tend to run at potent...

Страница 52: ...size Viscosity is higher than expected Heat product or change system parameters Mechanical componets in contact Check pump assembly Verify that all dowell pins are in place Noise due to cavitation Net...

Страница 53: ...s and procedures Cleaning according to schedules and defined guidelines increase the control over cleaning parameters to ensure fluid safety and quality Be careful to determinate the right guidelines...

Страница 54: ...ent solution may vary depending on the properties of the fluid being pumped 3 Intermediate rinse with cold water Intermediate rinse with clean water at ambient temperature for a period of 5 to 10 minu...

Страница 55: ...p The sterilization can be carried out by means of chemicals hot water or steam In the dairy industry the sterilization temperature is approximately 145 C 293 F Contact Q Pumps in case of temperatures...

Страница 56: ...serves to prevent a nut from loosening by superimposing another nut Thus it is possible to use as a fastening device This technique is useful to remove and tighten the studs from the gearbox To loose...

Страница 57: ...namiento Industrial Jurica Quer taro Qro M xico C P 76130 Call 52 442 218 4570 218 7400 Fax 52 442 218 4577 www qpumps com Operation and Maintenance Manual Positive Displacement Pump QTS Series Twin S...

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