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6.4.5 Assemble the packed stuffing box (80-PF)

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1. Slinger

2. Shaft sleeve

3. Packing gland

4. Flush line

5. Coverplate capscrew

6. Impeller key

7. Volute capscrew

8. Impeller washer

9. Impeller

10.Impeller capscrew

11.Volute

12.Impeller lockwasher

13.Volute gasket

14.Coverplate

15.Drip drain

16.Lantern ring

17.Packing

18.Gland bolt

19.Bracket

20.Shaft

Figure 6: Packed stuffing box

1. Insert two packing rings into the stuffing box.
2. Insert the lantern ring and the last two pieces of packing.

Make sure that the joints on the packing rings are staggered 90º.

3. Install, but do not tighten, the packing gland.
4. Install the coverplate over the pump shaft.
5. Tighten the capscrews according to the Capscrew torque table in the Maintenance

chapter.

6. Tighten the packing gland to compress the packing.

See the note on the packed pump operation in the Operations chapter for more
information.

6 Maintenance

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Series 80 INSTRUCTION MANUAL

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Содержание 80

Страница 1: ...INSTRUCTION MANUAL P81629 Rev G Series 80 ...

Страница 2: ......

Страница 3: ...issioning Startup Operation and Shutdown 14 5 1 Preparation for startup 14 5 1 1 Check the rotation 14 5 2 Prime the pump 15 5 3 Start the pump 15 5 4 Pump operation precautions 16 5 5 Shut down the pump 16 5 6 Note on the packed pump operation 16 6 Maintenance 18 6 1 Lubrication 18 6 2 Disassembly 18 6 2 1 Disassembly precautions 18 6 2 2 Drain the pump 18 6 2 3 Remove the pump assembly 18 6 2 4 ...

Страница 4: ... 80 S 22 6 4 4 Assemble the double mechanical seal 80 D 23 6 4 5 Assemble the packed stuffing box 80 PF 24 6 4 6 Install the impeller 25 6 4 7 Reinstall the pump assembly 25 6 4 8 Screw torque values 25 6 4 9 Dealer servicing 25 7 Product warranty 26 Table of Contents 2 Series 80 INSTRUCTION MANUAL ...

Страница 5: ... 1 2 Safety WARNING The operator must be aware of safety precautions to prevent physical injury Operating installing or maintaining the unit in any way that is not covered in this manual could cause death serious personal injury or damage to the equipment This includes any modification to the equipment or use of parts not provided by Xylem If there is a question regarding the intended use of the e...

Страница 6: ...gnetic fields hazard Electrical Hazard CAUTION 1 2 2 Safety instruction decals WARNING Do NOT exceed the maximum working pressure of the pump This information is listed on the nameplate of the pump Alert symbol This safety alert symbol is used in manuals and on the safety instruction decals on the pump to draw attention to safety related instructions When used the safety alert symbol means that fa...

Страница 7: ...l safety instruction decals are always clearly visible and readable 1 2 3 User safety General safety rules These safety rules apply Always keep the work area clean Pay attention to the risks presented by gas and vapors in the work area Avoid all electrical dangers Pay attention to the risks of electric shock or arc flash hazards Always bear in mind the risk of drowning electrical accidents and bur...

Страница 8: ... chemicals or hazardous fluids that have come into contact with your eyes or your skin Condition Action Chemicals or hazardous fluids in eyes 1 Hold your eyelids apart forcibly with your fingers 2 Rinse the eyes with eyewash or running water for at least 15 minutes 3 Seek medical attention Chemicals or hazardous fluids on skin 1 Remove contaminated clothing 2 Wash the skin with soap and water for ...

Страница 9: ...duct 3 If applicable unfasten the product by removing any screws bolts or straps Use care around nails and straps 4 If there is any issue then contact a sales representative 2 2 Pump lifting WARNING Assembled units and their components are heavy Failure to properly lift and support this equipment can result in serious physical injury and or equipment damage Lift equipment only at the specifically ...

Страница 10: ...dirt and vibrations Rotate the shaft by hand several times at least every three months Treat bearing and machined surfaces so that they are well preserved Refer to the drive unit and coupling manufacturers for their long term storage procedures For questions about possible long term storage treatment services please contact your local sales and service representative 2 Transportation and Storage 8...

Страница 11: ...ids Unheated domestic and fresh water Boiler feed water Condensate Hydronic cooling or heating Benign liquids Pressure boosting General liquid transfer Rotation Pump rotation is clockwise when viewed from the back of the motor An arrow is also located on the pump to show the direction of rotation 3 2 Operational specifications Mechanical seal specifications This table describes the specifications ...

Страница 12: ...r as well as systems that are subjected to a wide variety of chemical conditions and solids buildup 3 For operating temperatures above 250 F a cooled flush is required and is recommended for temperatures above 225 F for optimum seal life On closed systems cooling is accomplished by inserting a small heat exchanger in the flush line to cool the seal flushing fluid 4 Flush line filters and sediment ...

Страница 13: ...grated Technologic with Sensorless Control ITSC can be oriented to different positions relative to the pump nozzles This can be easily changed during pump installation by removing the motor mounting capscrews raising the motor assembly slightly 0 015 to 0 030 if needed and rotating the motor assembly around the pump centerline Raising the motor assembly more than 0 030 could damage the mechanical ...

Страница 14: ... This facilitates priming ensures a steady flow of liquid and provides a positive suction head on the pump 4 1 3 Piping checklist WARNING The heating of water and other fluids causes volumetric expansion The associated forces can cause the failure of system components and the release of high temperature fluids In order to prevent this install properly sized and located compression tanks and pressu...

Страница 15: ...the strainer has an area three times that of the suction pipe with a mesh hole diameter of no less than 0 25 in 0 64 cm Check that flexible piping is used on both the suction and discharge sides of the pump when you use an isolation base Check that a B G Triple Duty valve is installed in the discharge line This valve serves as a check valve that protects the pump from water hammer and serves as an...

Страница 16: ...he pipe system in order to prevent premature failure at initial startup Bring variable speed drivers to the rated speed as quickly as possible Run a new or rebuilt pump at a speed that provides enough flow to flush and cool the close running surfaces of the stuffing box bushing If temperatures of the pumped fluid will exceed 200 F 93 C then warm up the pump prior to operation Circulate a small amo...

Страница 17: ...nning requirements Before you start the pump you must perform these tasks Open the suction valve Open any recirculation or cooling lines 1 Fully close or partially open the discharge valve depending on system conditions 2 Start the driver 3 Slowly open the discharge valve until the pump reaches the desired flow 4 Immediately check the pressure gauge to ensure that the pump quickly reaches the corr...

Страница 18: ...evels can damage the bearings stuffing box or seal chamber and the mechanical seal which can result in decreased performance NOTICE Avoid increased radial load Failure to do so can cause stress on the shaft and bearings Avoid heat build up Failure to do so can cause rotating parts to score or seize Avoid cavitation Failure to do so can cause damage to the internal surfaces of the pump Operation un...

Страница 19: ...nd installation has unique operating conditions that result in widely variable leakage rate requirements Maximum fluid temperature At fluid operating temperatures near the upper limit of 190 F 88 C the maximum temperature rise of the leakage is important Never operate a packed pump with steam forming at the gland This limits the temperature rise to a maximum of about 20 F 7 C If the formation of s...

Страница 20: ...rts are available before you disassemble the pump for overhaul 6 2 2 Drain the pump CAUTION Allow all system and pump components to cool before you handle them to prevent physical injury 1 Close the isolation valves on the suction and discharge sides of the pump You must drain the system if no valves are installed 2 Open the drain valve Do not proceed until liquid stops coming out of the drain val...

Страница 21: ...ert gasket and the retainer if it is used 6 2 6 Remove the seal or packing rings 80 S 80 D and 80 PF 1 Remove the hex nuts from the seal cap bolts 2 For the 80 PF remove the hex nuts that hold the packing gland to the stuffing box 3 Remove the coverplate screws 4 Remove the coverplate from the bracket 5 Remove the seal assembly or packing rings 6 2 7 Remove the 2 inch single mechanical seal 80 S 1...

Страница 22: ...Inspection criteria Inspect the shaft and sleeve according to this criteria Thoroughly clean the shaft and sleeve Thoroughly clean the coverplate seal cavity Inspect the surface for damage such as pitting corrosion nicks and scratches Replace these parts if they are damaged 6 4 Reassembly 6 4 1 Assemble the standard mechanical seal 80 and 80 F 1 Lubricate the shaft sleeve and coverplate seal cavit...

Страница 23: ...ationary seal with an O ring into the seal cap and slide it onto the shaft 3 Replace the seal cap gasket 4 Slide the rotating portion of the seal assembly onto the shaft sleeve and lock it in place ID seal size Distance between collar and impeller end of the shaft sleeve 1 1 4 in 3 175 cm 1 13 32 in 3 571 cm 1 5 8 in 4 128 cm 1 1 4 in 3 175 cm 5 Assemble the coverplate onto the bracket 6 Tighten t...

Страница 24: ...m lubricant 2 Slide the stationary seal with an O ring onto the shaft 3 Slide the rotating portion of the seal assembly onto the shaft sleeve and lock it in place a distance of 55 64 in 2 813 cm from the seal collar to the impeller end of the shaft sleeve 4 Assemble the coverplate onto the bracket 5 Tighten the capscrews according to the Capscrew torque table 6 Attach the seal gland to the coverpl...

Страница 25: ...housed in the coverplate A seal cap gasket is not used 1 2 1 1 O rings 2 Motor end Figure 5 Double mechanical seal 3 Insert another stationary seal and O ring into the coverplate 4 Slide the seal cap onto the shaft 5 Replace the seal cap gasket 6 Slide the rotating portion of the seal assembly onto the shaft sleeve 7 Assemble the coverplate onto the bracket 8 Tighten the capscrews according to the...

Страница 26: ...et 20 Shaft Figure 6 Packed stuffing box 1 Insert two packing rings into the stuffing box 2 Insert the lantern ring and the last two pieces of packing Make sure that the joints on the packing rings are staggered 90º 3 Install but do not tighten the packing gland 4 Install the coverplate over the pump shaft 5 Tighten the capscrews according to the Capscrew torque table in the Maintenance chapter 6 ...

Страница 27: ... Capscrew torque in ft lb Nm Capscrew type Head marking Capscrew diameter in inches 1 4 5 16 3 8 7 16 1 2 5 8 3 4 7 8 1 SAE grade 2 6 8 13 18 25 34 38 52 60 81 120 163 190 258 210 285 300 407 Brass and stainless steel or 4 5 10 14 17 23 27 37 42 57 83 113 130 176 200 271 300 407 SAE grade 5 10 14 20 27 35 47 60 81 90 122 180 244 325 440 525 712 800 1085 The M6 set screw has a rating of 10 N m 6 4 ...

Страница 28: ...Seller shall have no warranty obligations to Buyer with respect to any product or parts of a product that have been a repaired by third parties other than Seller or without Seller s written approval b subject to misuse misapplication neglect alteration accident or physical damage c used in a manner contrary to Seller s instructions for installation operation and maintenance d damaged from ordinary...

Страница 29: ...ed in a manner contrary to Seller s instructions for installation operation and maintenance d damaged from ordinary wear and tear corrosion or chemical attack e damaged due to abnormal conditions vibration failure to properly prime or operation without flow f damaged due to a defective power supply or improper electrical protection or g damaged resulting from the use of accessory equipment not sol...

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Страница 32: ...logies and advanced analytics solutions for water electric and gas utilities In more than 150 countries we have strong long standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise with a strong focus on developing comprehensive sustainable solutions For more information on how Xylem can help you go to www xylem com Xylem I...

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