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Appendix 1 - Impeller Pump Inspection, Common Problems and Operation

A self-priming vacuum is created as the
flexible impeller vanes straighten upon

leaving the cam, drawing liquid into the pump.

The rotating impeller carries liquid from
the inlet to the outlet port.

As a consequence of their design, flexible
impeller pumps can pass fairly large solids.

When the flexible impeller vanes regain
contact with the cam, they bend and the

liquid is discharged from the pump in a
uniform flow.

Liquids can be pumped in the opposite direc-
tion by reversing the rotation of the pump.

Operation: How an Impeller Pump Works

Shurflo recommends replacing your impeller annually. Proper storage of the impellers during a prolonged lay-up can help
maintain the life of the impeller.

Remove the impeller from the housing and store it in a cool, dark place. This will avoid the following:

• Copper bonding of the impeller to the housing

• Vanes “setting” into position as stored in the housing

• Ultraviolet deterioration

Recommended inspection to be performed at any service interval:

Impeller . . . . . Inspect for cracks or tears. Also, inspect for excessive abrasion of vane ends.

Replace annually or if any of the conditions exist (see picture).

Wear Plate . . . . Inspect for wear, flatness, and pin for fatigue. Replace at minor

and major pump rebuild or if wear is evident to maintain
pump flow and suction performance.

Cam . . . . . . . . . Replace at major pump rebuild or if pitting/wear is evident.

Cover . . . . . . . . Replace at major pump rebuild or if wear exists to maintain

pump flow and suction performance.

Mechanical Seal

Replace at minor and major pump rebuild or if leaking.

Lip Seal . . . . . . Replace at minor and major pump rebuild or if leaking.

Shaft . . . . . . . . . Inspect for wear in area of lip seal and rubber impeller. Grooving of

lip seal area or heavy fretting of the impeller end shaft will require shaft replacement.

Bearing . . . . . . Inspect for loss of grease, corrosion or rough rotation. Replace at major pump rebuild

or if in doubt.

Three tips to help you install your new Shurflo impeller:

• Use a non-petroleum-based lubricant (silicone or soapy water) to help slide the impeller into the housing.

• Install the impeller with a twisting motion onto the shaft. Never force an impeller onto the shaft.

• Impeller must be able to move freely on the shaft to properly prime and function.

(Use a small amount of non-petroleum-based lubricant to help hold the o-ring or gasket when replacing the cover.)

Ripped
Vane

Bead Worn
To A Flat

Pitting

Cavitation

Bowed (set)

Tear

SHURflo Bronze Pedestal Self-Priming
Flexible Impeller Pumps

Models R30GN, R50GN and R102N

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual

Form L-4095 (12/09)

Содержание R102N

Страница 1: ... is 25 PSI 60 ft of head Max RPM 3450 Suction lift to 13 5 ft Buna N mechanical seal with carbon ceramic wear faces and 18 8 stainless steel components Maximum viscosity up to 500 SSU and 25 PSI 60 ft of head at 1725 RPM or run at reduced speeds to handle a wide range of pump fluid viscosities up to 2500 SSU and specific gravity up to 1 3 DO NOT pump oils or petroleum derivatives with optional neo...

Страница 2: ...ailable from the manufacturer Custom model configurations may require ordering standard components and or optional parts that will need to be assembled by the customer Manufacturer reserves the right to change model order codes stan dard models specifications and performance without notification Pedestal Pumps are not supplied with a motor Maximum motor speed is 3600 RPM R series pumps are all ped...

Страница 3: ...w As pump wears the performance will decrease Extended operation beyond 60 feet of head will result in immediate impeller failure Female NPT inlet and outlet in inches Suggested horsepower pumps do not ship with motors Suction lift requires wetted impellers and seal chamber NOTES Consult tables on HP adders and speed recommendations for high viscosity fluids The pump relationship between volume GP...

Страница 4: ...1 2 1 2 Nitrile BZ BR 300 Series SS SS CG Ball Vellumoid Buna 4 2 R50GN 3450 3 4 5 8 Nitrile BZ BR 300 Series SS SS CG Ball Vellumoid Buna 5 2 R102N 3450 1 5 8 Nitrile BZ BR 300 Series SS SS CG Ball Vellumoid Buna 6 6 SS Stainless Steel CG Carbon Graphite BR Brass BZ Bronze 303 or 300 Stainless Steel Series The shafts have drive slots with key for drive couplers or pulleys The impeller insert can ...

Страница 5: ...13 4 26 3 00 3 68 5 69 1 12 4 69 2 75 0 39 3 24 1 44 3 62 0 18 1 8 Standard NPT female pipe thread Models R30GN and R50GN only have one drain plug one dimension N The shafts have drive slots with key for drive couplers or pulleys NOTE All dimensions have a tolerance of or 1 8 Manufacturer reserves the right to change dimensions without notification View is from Drive Shaft End NOTE Location of sin...

Страница 6: ...6S Nitrile 2 23 0 78 0 53 0 09 12 21251S Nitrile 2 45 1 25 0 63 0 18 12 19317S Nitrile 2 58 1 63 0 63 0 18 12 Refer to Repair Parts list pages in this manual to match up impeller with pump model Nitrile is standard and is equivalent to Buna N Nitrile is suggested for pumping oil based fluids and Neoprene is suggested for pumping water based fluids NOTES Dry running will result in immediate failure...

Страница 7: ...s depends on the length of time between starts and whether or not the impeller is wet enough to close cavities to affect a prime 6 If solid contaminates are suspected in a liquid place a filter in the suction line 7 Be certain all suction piping connec tions are airtight NOTE Assure airtight pipe connections with the use of a pipe joint sealant DISCHARGE 8 Attach discharge piping to the discharge ...

Страница 8: ...ump place a small quanti ty of light oil or some other storage preservative compatible with your application in the pump and rotate the shaft very slowly to work the oil throughout the gears and the body PUMP REPAIR Procedures for Models R30GN and R50GN See Figures 2 and 6 DISASSEMBLY Never use petroleum based grease or oil with optional Neoprene impellers 1a Remove six screws Ref No 21 and six lo...

Страница 9: ...ing is flush against cover Ref No 4 Do not damage the brass cover 4a Replace mechanical seal Ref Nos 10 11 if removed or is leaking between the body and shaft while the pump is running b Remove the shaft Ref No 18 See above c Push or pry out the old mechanical seal seat Ref No 11 by applying incremental pressure with a screw driver from shaft bore at pump drive end in bearing retainer Ref No 14 Do...

Страница 10: ...of pliers Alternately pull on the impeller with the pliers or use two screwdrivers on opposite sides to pull it out See Figure 2 d Inspect impeller for excessive wear and or damage See Figure 2 NOTE The impeller is a common wear item in this pump and frequent replace ment is suggested Impeller can become torn distorted and overheated becom ing brittle When this happens impeller blade fragments can...

Страница 11: ...drive shaft assembly Ref No 12 with bearing Ref No 2 and bearing retaining rings Ref No 3 into the drive shaft side of the pump body Ref No 4 Be sure to lubricate the drive shaft with water before pushing it through the new seal seat After the bearing shaft assembly is pushed into the pump body Ref No 4 reinstall snap ring Ref No 1 into the pump body Ref No 4 f Using a snap ring pliers place the t...

Страница 12: ... Woodruff Key 10093 04432 1 10 11 Mechanical Seal and Seat Buna N Assembly 24833S 24843S 1 12 Pump Body Bronze or Brass 10596 10176 1 13 Gasket Vellumoid 10197 10171 1 14 Ball Bearing Housing Bronze or Brass 15103 15104 1 15 Ball Bearing 04306 04257 1 16 Retaining Ring 04303 04259 1 17 Retaining Ring 04304 04258 3 18 Shaft 303 Stainless Steel 24832 10175 1 19 Key Square 13370 21437 1 20 Screw 0543...

Страница 13: ...or Stainless Steel 10515C 1 9 Gasket Vellumoid 10931 1 10 Cover Bronze or Brass 10182 1 11 Bushing Carbon Graphite 06333 1 12 Shaft 300 Series Stainless Steel 18502 1 13 Woodruff Key 303 Series Stainless Steel or Brass 04432 1 14 Key Square 21437 1 15 Dowel Pin 01311 2 16 Screw 17845 4 17 Lockwasher 12170 4 18 Drain Plug Bronze Brass or Stainless Steel 00336 2 Repair Kit consists of Ref Nos 5 7 9 ...

Страница 14: ...t for wear flatness and pin for fatigue Replace at minor and major pump rebuild or if wear is evident to maintain pump flow and suction performance Cam Replace at major pump rebuild or if pitting wear is evident Cover Replace at major pump rebuild or if wear exists to maintain pump flow and suction performance Mechanical Seal Replace at minor and major pump rebuild or if leaking Lip Seal Replace a...

Страница 15: ...15 SHURflo Operating Instructions Performance Specifications and Parts Manual Form L 4095 12 09 Notes ...

Страница 16: ...ing shipped to SHURflo for service or warranty consideration SHURflo reserves the right to request a Material Safety Data sheet from the Purchaser for any pump or product SHURflo deems necessary SHURflo reserves the right to disposition as scrap pumps or products returned which contain unknown substances or to charge for any and all costs incurred for chemical testing and proper disposal of compon...

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