Tri-Clover® C-Series Centrifugal Pump
Contents
1. CONTENTS Thank you for purchasing a Tri Clover Product This manual contains installation operation cleaning and repair instructions with parts lists for the C Series close coupled pumps manufactured by Tri Clover Inc Kenosha Wisconsin It also provides a troubleshooting chart to assist in determining pump malfunction READ THIS MANUAL carefully to learn how to service and reconfigure these valves Failure to do so could result in personal injury or equipment damage SAFETY IMPORTANT SAFETY INFORMATION INTRODUCTION DESCRIPTION INSTALLATION INSTALLATION GUIDELINES PIPING HINTS MAINTENANCE TYPE D OR F SEALS EXTERNAL BALANCED TYPE E WATER COOLED BALANCED DOUBLE SEAL STUB SHAFT ON MODEL CC4410 PUMPS TROUBLESHOOTING TROUBLESHOOTING GUIDELINES PARTS LIST SAFETY IMPORTANT SAFETY INFORMATION Safety is very important DO NOT attempt to modify any Tri Clover product To do so could create unsafe conditions and void all warranties DO NOT place any Tri Clover product in an application where general product service ratings are exceeded The following DANGER WARNING AND CAUTION signs and their meanings are used within these instructions A DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury The word Danger is used in the most extreme cases 44 WARNING Indicates a potentially hazardous situation which if2. BEVEL SEAT fittings POSITIVE PUMPS CENTRIFUGAL PUMPS AUTOMATIC Air Actuated VALVES STAINLESS STEEL TUBING AUTOMATED FLOW CONTROL SYSTEMS Terms Warranty Provisions Notice of Claims and Limitation of Liability Prices and all terms and conditions of sale are established in current price sheets and are subject to change without notice All orders are subjectto acceptance by Tri Clover Inc atits Kenosha Wisconsin or Distribution Center offices only No assignment of the purchaser s rights may be made without consent of Tri Clover Inc Each Tri Clover item is warranted to be free from manufactur ing defects for a period of one 1 year from the date of shipment providing ithas been used as recommended and in accordance with recognized piping practice and providing it has not been worn out dueto severe service such as encountered under extremely corro sive or abrasive conditions This warranty is expressly in lieu of any other warranties express or implied including but not limited to any implied warranty of merchantability or fitness for a particular pur pose All claims must be in writing and must be mailed or delivered by purchaser within thirty 30 days after purchaser learns of the facts upon which such claimis based Any claim not made in writing Tri Clover Inc Food amp Dairy Division Bio Pharm Division 9201 Wilmot Road PHONE 1 800 511 5444 Kenosha Wisconsin 53141 1413 FAX 414 694 2454 PHONE 1 800 242 4
3. REPAIR It is recommended that periodic inspection of all parts of the pump be made to prevent malfunctions caused by worn or broken parts Disassembly for repair is the same procedure as for cleaning Note Protect the sealing surface of the backplate against nicks and scratches while removing cleaning and reassembling For D and F seals examine the backplate sealing surface carefully for any defects that will shorten seal life Remove the carbon seal o ring seal cup and spring Remove the drive collar by loosening set screws and sliding collar off the stub shaft The balanced seal is designed for outside application Sealing of the process fluid along the shaft is accomplished by action of the process pressure on an o ring seal installed in a groove in the carbon seal The same action pressurizes the o ring groove and augments the spring tension in keeping a tight joint at the sealing faces The location or width of the sealing face controls the balancing of the seal Carefully inspect the o ring seal and carbon seal for signs of abrasions cuts or other wear that would cause leakage When the extension of the carbon seal face extends less than s2 from the body it is advisable that the carbon seal be replaced Remove the cascading water attachment if included Remove the rubber shaft deflector by prying it gently from the rear while sliding it forward Examine the deflector for tearing loose fit or other defects that would allow
4. The exploded views and accompanying parts list facilitate ordering repair parts from the factory All parts of the pump are exploded and keyed to the parts list DESCRIPTION QTY KEY DESCRIPTION Casing 80 Carbon Seal Impeller 80A Cup Set Screw Shaft 80B O ring Seal Universal Stub Shaft Threaded 80C Spring Universal Stub Shaft STD 80G Cup Backplate 80H Spring Backplate 80J Drive Collar Backplate Pin 80K Set Screw Backplate DG 80L Drive Collar Follower 80M Set Screw Drive Collar Machine Screw 80N Seal Seat DG O ring 80P PTFE Gaskets DG Lockwasher 80R PTFE Gaskets DG SS Gland Ring DG 83C Stuffing Box Bolt Screw DG 83D Machine Screw Lockwasher DG 83E O ring Retainer Impeller 90 Casing Gasket Castellated Nut Impeller 127 Water Inlet Assembly Cotter Pin Impeller 127A Lock Nut Deflector 131 Seal Guard Assembly Adapter 133 Washer Impeller Adapter Pin 207 Adjustable Leg Adapter Mounting Screw 209 Adjustable Leg Bracket Adapter Plate 209A Set Screw Square Hd See note next page 209B Bracket Mounting Screw Adapter Mounting Screw 209C Washer Leg Assembly Used only with 71C above Clamp Assembly Complete 4 4 4 1 1 1 1 2 1 1 4 1 4 4 4 4 4 4 4 1 1 2 4 1 E Seal takes 2 Model 114 216 218 328 req 1 80P outboard gasket he thick and 1 80R inboard gasket thick Gaskets are not interchangeable Model 4410 req 2 80P gaskets same size out inboard
5. locate per setting instructions in next section Assemble the spring seal cup o ring seal and carbon seal and install as a unit taking care that slot in seal cup is aligned with pin in drive collar Gentle finger pressure will overcome o ring resistance on the shaft Note Do not lubricate seal with any type of oil or grease The seal faces are lubricated by product being pumped For floating retainer models Install the backplate by rotating it until the pins in the backplate engage the pins in the adapter Rotate the shaft until the floating pin hole is in a horizontal position Insert the floating retainer center it in the shaft and slide the impeller on the shaft Hold the impeller tight against the shoulder on the shaft and rotate the shaft one fourth turn until the floating retainer drops and engages the impeller For threaded shaft models Install the backplate by rotating it until the pins in the backplate engage the pins in the adapter Slide the impeller on the shaft Install washer s and thread the castellated nut to the shaft in a clockwise direction until impeller hub contacts shaft shoulder Use a combination of washers if needed to ensure that the castellated nut is tight on the impeller before inserting and securing cotter pin 10 MAINTENANCE For both models Install gasket on backplate Place the casing in position and close and tighten the clamp while lightly tapping the clamp with a hammer to ensure even tighten
6. not avoided may result in minor or moderate injury May also be used to alert against an unsafe operating or maintenance practice A CAUTION Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Safety labels are placed on every pump Do not remove any labeling on any Tri Clover product Immediately replace any label that is missing AWARNING ROTATING SHAFT DO NOT OPERATE WITHOUT GUARD IN PLACE Part Number 38 241 INTRODUCTION DESCRIPTION 44 WARNING Before servicing pump disconnect electrical power source The C series close coupled pumps are made up of two sections power or drive section and the liquid end or pump section The pump is mounted to the frame of the drive motor by means of an adapter and is coupled to the motor shaft by a stainless steel stub shaft The impeller mounts on the stub shaft and is retained by one of two methods The casing is clamped to the adapter greatly simplifying removal and also permitting positioning of the discharge outlet through 360 The external balanced seal assures long seal life The drive motor is mounted on a frame having adjustable legs providing simple installation and leveling INSTALLATION INSTALLATION GUIDELINES UNPACKING EQUIPMENT Check the contents and all wrapping when unpacking your equipment Inspect al
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8. special instructions for proper assembly C4410 pump shafts utilize six set screws to secure the stub shaft to the motor shaft Because some of these six set screws are of the dog point design it is necessary to drill F 257 diameter holes 3 16 5mm deep into the motor shaft when assembling the pump C4410 pumps manufactured between December 1988 and June 1989 feature stub shafts designated as Type on illustration below Figure 6 Three of the six set screws on Type shafts are dog point and must be installed as noted above C4410 pumps manufactured after June 1989 feature stub shafts designated as Type II on illustration below Two of the six set screws on Type II shafts are dog point and must be installed as noted above These holes must be drilled AFTER the stub shaft is properly located on the motor shaft Proper location is with s 1 5mm clearance between the impeller back face and the inside face of the backplate Holes are drilled into the motor shaft in line with the set screw holes of the stub shaft DRILL BUSHING C4410DB 06 should be used when drilling the holes to assure correct placement Effective 4 1 89 one C4410DB 06 Bushing is included with each C4410 pump shipped from Tri Clover LESS MOTOR Additional bushings are available upon request from Tri Clover if you require for later field servicing of the pump O I K J C4410DB 06 Drill Bushing NS A Ky x7 Type Shaft Insert drill
9. 000 FAX 414 694 7104 and within the time period specified above shall be deemed waived Purchaser s sole and exclusive remedy and Tri Clover Inc s maximum liability for claims arising hereunder or for negligence for any and all losses and damages resulting from any cause shall be either the repair or replacement of defective items or at Tri Clover Inc s option the refund of the purchase price for such items In no event including in the case of a claim for negligence shall Tri Clover be liable for incidental or consequential damages including loss of profits No person including any representative employee or agent of Tri Clover is authorized to assume on behalf of Tri Clover Inc any liability or responsibility in addition to or different from that described inthis provision Any and all representations promises warranties orstatements that are in addition to or different from the terms of this provision are of no force or effect Distribution Centers in Union City California and Memphis Ten nessee Export Division PHONE 1 414 697 3170 FAX 1 414 694 8188 Tri Clover Mexico Distribution Centers Tri Clover Canada Recursos Petroleros No 7 Memphis TN 101 Milner Avenue Fracc Ind La Loma be PHONE 1 800 238 0142 Scarborough Ontario M1S4S6 54060 Tlalnepantla Edo de Mexico e Union City CA PHONE 416 297 3400 PHONE 52 5 397 0601 Alfa Laval PHONE 1 800 852 3178 FAX 416 299 5095 FAX 52 5 362 3246 CSM 97 7 5
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11. AINTENANCE 3 Assemble the stub shaft to the motor armature shaft Do not tighten set screws 4 Install the backplate into the counter bore in the adapter For floating retainer models Rotate the shaft until the floating pin hole is in a horizontal position Insert the floating retainer center it in the shaft and slide the impeller on the shaft Hold the impeller tight against the shoulder on the shaft and rotate the shaft one fourth turn until the floating retainer drops and engages the impeller For threaded shaft models Slide the impeller on the shaft and replace washer and castellated nut and cotter pin Use a combination of washers if needed to ensure that the castellated nut is tight on the impeller before inserting and securing cotter pin For both models 1 Assemble the clamp to the adapter and install the casing 2 Push the stub shaft onto the motor shaft until the impeller strikes the inside front face of the backplate Locate the stub shaft on the motor shaft allowing s 1 5mm maximum clearance between the rear face of the impeller and the inside face of the backplate Tighten the four set screws on the stub shaft Ata location behind the backplate scribe a mark on the shaft refer to Figure 5 This will be required to set the drive collar location as described in this section Drive Collar Setting Remove casing impeller and backplate Slide the rubber deflector on the shaft until it seats the groove
12. All models req 4 17M lockwashers 18 QTY 1 or 2 N ad p For All C Series Pumps Note Depending on type of frame some older models C114 and 216 with type E seals require a special adapter 71C and longer mounting screws 71D Additional Type DG Clamped in Seal Seat Components For use with type D seal Floating Retainer with Type D or F External Balanced Seals Threaded Shaft and Castellated Nut Retainer System for Use with Type D F or E Seals 19 v 08 101yy 08 101yy 7 08 001yy N ST ZI 08 10Tpy 1 08 4017 S GSZ 01ytdS S IVII OIFSdS 9TE TX rETI 9T 9TE YT 18TEAS N IFTasTe SS 00 I VAT SS HIIEIDS T9I I 5 01Iyy SS 00 TVANT xxST N7801 ZI SS H80 TOS 91 ZT 10Tyy 9T TI DOTPy W A801 10S 9T TI HOT py 9TE TI COLT yy 9TE VZO 0TPSAS 9TE ATO 1OTPYAS 9TE VIO LLOTYYAS 9TE VIO INOIFFAS ITE VIO SOIFFAS 9TE VIO LOIFFAS TIIE VIO WOIFFAS Joquinyy Meg 0177 Vy 08 187 dE 08 I8TE 08 C87E N 7 08 87 S dE OS ASTE VI 08 I8TE SEO AT SHHWEI S F0 VSZ FIIS STUVSL 8TES S I VIZ GQ9IT 9TETX ELIT 9TE YT 18TEAS TITE AFT ASTE SS 00 T VAT SS HIIEIDS T9TE ZI D8ZEAS SS 00EIVAT NP SS H80 TOS 91 ZT 187 ILE II ISTE S I IT A9IT JLE ALI ASTE ITE TI ASTE ITE ITO STES TITE AIO ISTES ITE DIO LLETES ITE DIO INSTES YLE DIO SSTES ITE DIO LSTES TITE DIIO NETES Joquny Ved 87 Vy 08 187 dE 08 I8TE 7 08 1
13. M Printed in March 1997
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15. bent or worn Magnetic hum in motor Motor bearings are worn Foreign matter is rotating with impeller Impeller is binding Cavitation Pump is not leveled properly Impeller is damaged Piping is not supported Cavitation O ring seal is worn or defective Carbon seal is worn Insufficient compression on seal assembly Damaged inlet or outlet Backplate gasket is worn Clamp is loose 17 REMEDY Correct wrong or poor electrical connections Reverse a three phase motor by switching any two of the three power leads at the motor controller reverse a single phase motor per motor manufacturer s instructions Open gate valve clear obstruction See la above See 1b above See 1c above Replace impeller Internal motor wiring is incorrect replace motor Relieve strain on casing replace defective impeller Replace shaft Consult motor manufacturer Replace bearings Remove casing and remove foreign matter See 3b above Improper sizing or piping etc Level pump Replace impeller Support discharge and suction piping Improper sizing or piping etc Replace o ring seal Replace carbon seal Replace spring Replace casing Replace gasket Tighten clamp PARTS LIST All orders for repair parts must contain the following data 1 Complete model number located on nameplate 2 Pump serial number located on nameplate 3 Description and part key number from the parts list
16. bushing in holes A B C Insert drill bushing in holes A and drill into motor shaft B and drill into motor shaft 16 TROUBLESHOOTING TROUBLESHOOTING GUIDELINES Tri Clover pumps are relatively maintenance free with the exception of sanitizing Like any piece of machinery however occasional problems can arise This section provides a means of determining and correcting most of your pump problems The motor manufacturer should be contacted for specific repair instructions on the motor The chart below has been prepared on the basis that the pump is properly suited to its application Should problems arise where the remedies listed below chart do not cure the situation pump cavitation may be the problem Symptoms of pump cavitation such as noisy operation insufficient discharge and vibration can result when a pump is not properly applied If these conditions are present check the system and re evaluate the application If assistance is required contact Tri Clover PROBLEM 1 No discharge Insufficient discharge Excessive power consumption Pump is noisy Excessive vibration Pump leaks PROBABLE CAUSE Pump speed too low Wrong direction of rotation Closed valve obstruction in discharge piping Pump speed too low Wrong direction of rotation Valve partially closed obstruction in discharge piping Impeller damaged Motor speed too high Impeller is binding Motor shaft is
17. e armature shaft Remove the bolts securing the adapter to the motor frame and remove the adapter Loosen the 4 set screws securing the stub shaft by prying from the back with a flat bar The stub shaft is a tight fit but can be removed by evenly applying pressure around the periphery of the shaft with the pry bar Examine the stub shaft sealing surfaces for nicks or scratches which can cause excessive o ring seal wear or leaking Attach a hoist to the motor if necessary and remove the bolts securing the motor to the adjusting leg brackets Remove the set screws securing the adjustable legs and remove the legs Note The metal displaced by the setscrews on the adjustable legs makes it necessary to tap the legs out with soft hammer Rough spots should be filed down prior to reassembly Inspect casing clamp for damage or wear and replace as required Inspect the adjusting legs adjusting leg brackets adapter and casing and replace if necessary Motor maintenance repair and wiring are not covered in this manual For specific information contact the motor manufacturer REASSEMBLY 1 Assemble the adjusting legs to the adjusting leg brackets and assemble the brackets to the motor Level the motor by individually adjusting the legs and locking them in place with set screws Install the adapter to the motor with the drain cavity at the bottom Insert the four bolts securing the adapter to the motor Tighten the bolts securely 14 M
18. fluid leakage into the motor along the armature shaft Remove the bolts securing the adapter to the motor frame and remove the adapter Loosen the 4 set screws securing the stub shaft to the motor armature Remove the stub shaft by prying from the back with a flat bar The stub shaft is a tight fit but can be removed by evenly applying pressure around the periphery of the shaft with the pry bar Examine the stub shaft sealing surface for nicks or scratches which can cause excessive o ring seal wear or leaking Attach a hoist to the motor if necessary and remove the bolts securing the motor to the adjusting leg brackets Remove the set screws securing the adjustable legs and remove the legs Note The metal displaced by the set screws on the adjustable legs makes it necessary to tap the legs out with a soft hammer Rough spots should be filed down prior to reassembly Inspect casing clamp for damage or wear and replace as required Inspect the adjusting legs adjusting leg brackets adapter and casing and replace if necessary Motor maintenance repair and wiring are not covered in this manual For specific information contact the motor manufacturer MAINTENANCE REASSEMBLY 1 Assemble the adjusting legs to the adjusting leg brackets and assemble the brackets to the motor Level the motor by individually adjusting the legs and locking them in place with the set screws Install the adapter to the motor with the drain cavity at the bott
19. in the shaft A Dimension Note f the deflector cannot be forced on with the fingers a blunt 11 32 instrument can be used to provide additional force at the 216 11 32 1 D of the deflector 218 11 32 Slide the follower one carbon seal one seal o ring one seal 328 11 32 cup and drive collar onto the shaft 4410 11 32 Locate drive collar in relation to scribe mark as shown in Figure 5 and secure to the shaft with the set screws Drive collar location is critical Install the seal spring seal cup seal o ring and carbon onto the shaft Be sure the spring is seated in each cup and the drive ear on each seal cup is not in alignment with the drive pins on the drive collar Slide the stuffing box and backplate assembly over the shaft and seal parts Secure the follower to the stuffing box using four screws Assemble the backplate the impeller and the casing to the pump and tighten clamp tapping with soft hammer Make sure the orientation of the water connection on the stuffing box is correct Figure 5 Assemble seal guard and tighten nut Connect the water inlet and outlet piping to the stuffing box Assemble the suction and discharge piping to the pump Check for strain on the casing Adjust as required 15 MAINTENANCE STUB SHAFT ON MODEL CC4410 PUMPS INSTALLATION If you purchased a MODEL C4410 pump LESS MOTOR and are installing your own motor or if you are CHANGING MOTORS please note following
20. ing Assemble seal guard and tighten nut Assemble the cascading water attachment if so equipped to the adapter Close and tighten the clamp Assemble the suction and discharge piping to the pump Check for strain on the casing Adjust as necessary EXTERNAL BALANCED SEALS SETTING SEAL DRIVE COLLAR LOCATION The balanced seal is designed for outside applications and is available with cascading water attachment Sealing of the process fluid along the shaft is accomplished by action of the process pressure on an o ring seal installed in a groove in the carbon seal The same action pressurizes the o ring groove and augments the spring tension in keeping a tight joint at the sealing faces The width of the seal face controls balancing of the seal This type of seal should be replaced when the clearance between the carbon seal face and the backplate is less the 1 32 79mm or when leakage is noted To replace the seal 1 Disconnect the suction and discharge piping and remove the casing impeller and backplate 2 Assemble the spring seal cup o ring seal and carbon seal and install as a unit taking care that slot in seal cup is aligned with pin on drive collar Gentle finger pressure will overcome o ring resistance on the shaft When the carbon seal is replaced the location of the drive collar should be checked and relocated if necessary by one of the two following methods 11 MAINTENANCE Setting the Drive Collar by Measureme
21. l parts for damage that may have occurred during shipping Report any damage to the carrier LOCATION AND INSTALLATION The pump unit should be located as near as possible to the Figure One liquid source and in a position where the suction piping can be short and direct with a minimum number of elbows and fittings It should also be readily accessible for inspection and cleaning Motor Foot The pump unit as received from the factory is ready for installation To install it attach a hoist if necessary loosen the Bracket setscrews in the adjusting leg brackets and individually adjust the legs until the pump unit is level Tighten the setscrews Attach the suction and discharge piping Be sure suction and discharge piping is properly supported to avoid any strain on the Setscrew Adjustable Leg pump casing INSTALLATION PIPING HINTS GENERAL This section provides some do s and don ts of piping which will aid in obtaining the maximum efficiency and service from your pump Piping should be independently supported at both the suction inlet and discharge outlet Care should be taken that piping is properly aligned and does not put any strain on the pump casing The piping should have as few bends as possible SUCTION PIPING The suction piping should be short and follow a direct route with a minimum number of elbows and fittings Elbows should be located as far as po
22. nt Install the backplate gasket and casing Install and tighten casing clamp At a location behind the backplate scribe a mark on the shaft See Figure 2 or 3 Remove casing clamp casing 8 backplate Slide the drive collar onto the shaft Locate drive collar in relation to the scribe mark as shown in dimension A and secure to the shaft with the set screws Drive collar location is critical Install the seal spring seal cups seal o ring and carbon onto the shaft SETTING THE DRIVE COLLAR BY POSITION 1 Assemble the spring seal cup o ring seal and carbon seal onto the drive collar Care must be taken so that the spring does not rest on the tab that is bent back A portion of the spring is offset to provide clearance for this tab Care must be taken to ensure that pin on drive collar is in line with slot on cup Install as a unit on the shaft Install the backplate and casing Install and tighten the casing clamp Slide the drive collar and seal assembly toward the backplate until the nose of the drive collar pushes the o ring and carbon seal tight against the backplate 3 32 2 5mm IA S Di IT MARK SCRIBE D F Seals Figure Three SCRIBE MARK DG FG Seals C114 C216 C218 C328 C4410 A Dimension 11 92 11 99 11 37 11 32 11 32 Slide the drive collar away from the backplate 1 32 79mm and secure the drive collar in this location with the set screws Note Extra ca
23. of a discharge pipe smaller than the pump discharge outlet increases the total pump head but decreases the volume Ifa reducer is required on the outlet port of the pump and the discharge is vertical a concentric reducer should be used If the discharge is horizontal an eccentric reducer should be used and should be positioned so the straight side is down LOCATING VALVES In suction lift applications where the lift is not very high it may be desirable to install a foot valve to facilitate priming and to prevent draining off of the liquid back to the source A throttling valve should be installed in the discharge piping to provide a means of throttling pump volume MAINTENANCE TYPE D OR F SEALS EXTERNAL BALANCED DISASSEMBLY CLEANING GENERAL 44 WARNING Before servicing pump disconnect electrical power source carefully relieve all pressure and drain all fluids from pump and connected piping It is necessary to disassemble parts of the pump for cleaning and sanitizing For Tri Clover pumps equipped with the Groove In Shaft design types D DG or F seals only it is not necessary to disassemble if used in Clean In Place installation The extent of disassembly will depend on the application and the type of seal used in your pump To disassemble disconnect the suction and discharge piping Remove seal guard assembly with a wrench of appropriate size Turn the wing nut on the clamp assembl
24. om Insert the four bolts securing the adapter to the motor Tighten the bolts securely Assemble the stub shaft to the motor armature shaft Do not tighten set screws Install the backplate by rotating it until the pins in the backplate engage the pins in the adapter bracket For floating retainer models Rotate the shaft until the floating pin hole is in a horizontal position Insert the floating retainer center it in the shaft and slide the impeller on the shaft Hold the impeller tight against the shoulder on the shaft and rotate the shaft one fourth turn until the floating retainer drops and engages the impeller For threaded shaft models Slide the impeller on the shaft and replace washer and castellated nut and cotter pin For both models 1 Assemble the clamp to the adapter and install the casing 2 Push the stub shaft onto the motor shaft until the impeller strikes the inside front face of the backplate Locate the stub shaft on the motor shaft allowing s 1 5mm maximum clearance between the rear face of the impeller and the inside face of the backplate Tighten the four set screws on the stub shaft Remove casing impeller impeller pin and backplate 3 Slide the rubber deflector on the shaft until it seats the groove in the shaft Note f the deflector cannot be forced on with the fingers a blunt instrument can be used to provide additional force at the I D of the deflector Slide drive collar onto stub shaft and
25. re should be taken when assembling C series pumps with type DG or FG seals Incorrect stub shaft settings will allow the impeller hub to contact the inboard face of the stationary seal seat Interference of impeller hub and seal seat face will cause wear of impeller hub and damage the inboard or secondary seal face of the clamped in seat Visual inspection is recommended after installation of the impeller and before installation of casing to ensure clearance between the impeller hub and seal face If no clearance is visible the pump should be disassembled and stub shaft moved forward to provide at least s2 79mm clearance between the impeller hub and seal seat face Reset seal drive collar if necessary 7 When the drive collar is properly positioned and seal components are properly installed the pump shaft should rotate freely by hand If excessive effort is required to rotate the shaft check to be sure that all components are properly installed and the drive collar is properly positioned 12 MAINTENANCE TYPE E WATER COOLED BALANCED DOUBLE SEAL DISASSEMBLY CLEANING GENERAL A WARNING WARNING Before servicing pump disconnect electrical power source carefully relieve all pressure and drain all fluids from pump and connected piping It is necessary to disassemble parts of the pump for cleaning and sanitizing The extent of disassembly will depend on the application and the type of seal
26. s inside a stuffing box which is attached to the backplate lts sealing action is the same as the external balanced seal 1 WATER MUST BE PIPED THROUGH THE STUFFING BOX TO KEEP THE SEAL COOL AND VACUUM TIGHT The amount of water used will vary depending on the operating temperature of the pump In vacuum applications 10 drops per minute discharge is recommended while approximately 3 gallons per hour is required to maintain seal temperature at 100 F 38 C when the product temperature is 175 F 79 C Two s NPT water connections are provided on the stuffing MEA box They are spaced at 90 from each other and should Wa N P T be located when assembling the pump so that they are at 45 to vertical Flush water must enter one of these _ 45 connections and exit through the other connection Refer to figure 4 de AA Carefully inspect the o ring seals and the carbon seals for Y 7 signs of abrasions cuts or other wear that would cause u leakage When the extension of the carbon seal face extends less than s2 from the body it is advisable that the e carbon seal be replaced Inspect backplate seal surface and follower seal surface for nicks or scratches Replace if necessary E Seal VERTICAL Remove the rubber shaft deflector by prying it gently from the rear while sliding it forward Examine the deflector for tearing loose fit or other defects that would allow fluid leakage into the motor along th
27. ssible from the suction inlet to prevent head loss due to increased friction Excessive friction losses in the suction line could result in pump cavitation causing poor performance noise vibration damage to equipment and possible damage to product Whenever practical the diameter of the piping at the suction inlet should be increased in size An eccentric tapered reducer should be used in lieu of a concentric tapered reducer to prevent air pockets from forming and impairing pump efficiency In turn the eccentric reducer may be placed at the inlet of the pump and should be positioned so the straight side is up A horizontal suction pipe must have a gradual rise to the pump A high point in the suction line will form an air pocket and prevent proper pump operation All joints in the suction line should be air tight to prevent air leakage which can reduce pump capacity and efficiency DISCHARGE PIPING Position of the pump discharge is preferably either vertical or top horizontal The discharge piping should be short and direct with a minimum number of elbows and fittings Elbows should not be used at the discharge outlet as the friction encountered would be increased resulting in head loss It is advisable to increase the pipe diameter at the discharge outlet to prevent head loss However use of a larger discharge pipe than recommended may reduce the total pump head but increase the pump volume which can cause pump vibration due to overload Use
28. used in your pump To disassemble disconnect the suction and discharge piping Remove seal guard assembly with wrench of appropriate size Turn the wing nut on the clamp assembly until tension on the clamp saddle is relieved Open the saddles and remove the casing At this point the disassembly varies depending on the impeller retaining system applicable to your pump For floating retainer models Push back on the impeller and center the retainer in the stub shaft Slide the impeller forward and remove it For threaded shaft models Remove cotter pin and turn castellated nut in counterclockwise direction and remove washer and impeller For both models Disconnect the water inlet and outlet from the stuffing box Remove the four screws that retain the follower to the stuffing box Slide the stuffing box and backplate assembly forward off of the stub shaft Remove the inboard carbon seal seal o ring cup and the seal spring from the shaft Loosen the two set screws and remove the drive collar The remaining carbon seal seal o ring cup and the follower may now be removed from the shaft 13 MAINTENANCE REPAIR It is recommended that periodic inspection of all parts of the pump be made to prevent malfunctions caused by worn or broken parts Disassembly for repair is the same procedure as for cleaning This seal design is used in applications where a vacuum tight cool operating seal is required This seal consists of two carbon seal
29. y until tension on the clamp saddle is relieved Open the saddles and remove the casing At this point the disassembly varies depending on the impeller retaining system applicable to your pump For floating retainer models Push back on the impeller and center the retainer in the stub shaft Slide the impeller forward and remove it Do not try to remove retainer before removing impeller as this will cause damage to the retainer shaft and impeller For threaded shaft models Remove cotter pin and turn castellated nut in counterclockwise direction Remove washer s and impeller For both models 1 Rotate the backplate until the backplate pins clear the pins in the adapter and remove the backplate 2 Remove the casing gasket Note Protect the sealing surface of the backplate against nicks and scratches while removing cleaning and reassembling 3 Remove the carbon seal o ring seal seal cup and spring DG FG CLAMPED IN SEAT 1 Remove four bolt screws from backplate Inspect DG seat insert gland ring and gaskets for damage or wear and replace as required Note 80P outboard and 80R inboard gaskets are NOT INTERCHANGEABLE 80R thicker gasket MUST be inboard between backplate and seal seat Care must be taken to protect the sealing face of the backplate for D and F seals and the seal seat for DG seals from nicks and scratches 2 Remove the carbon seal and o ring seal Examine and replace as necessary MAINTENANCE
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