company confidential waukesha cherry-burrell 200 series centrifugal pump seal school company...

Company Confidential

Waukesha Cherry-Burrell

200 Series

Centrifugal Pump

Seal School



Seal School

No, not Navy seals!

And no, not marine life.

JM MOTOR SEAL

ADAPTER IMPELLER

CASING

200 Series Centrifugal

BACKPLATE

CLAMP


200 Series Tear Down

•Lock out power.

•Disconnect suction and discharge piping

•Loosen clamp



Remove Clamp



Remove pump casing, may require light tapping with soft mallet.



With casing removed, unscrew impeller nut by turning counter clock wise.



Use a 9/16” wrench to remove impeller nut.



With impeller nut removed, the impeller, back plate and seal assembly can be removed by pulling toward you.

(Pumps built after July of 2004 are fitted with an impeller nut versus bolt)



Complete removal by pulling assembly off of the motor, or bearing frame shaft. Make sure to check shims located on motor shaft. It is not necessary to replace shims unless they have been damaged.



Place assembly impeller down on soft or non metallic surface.



Using a 1/8” allen wrench loosen both set screws in the spring retainer.



Slide spring retainer off of the impeller shaft, using care not to lose the three springs.



Remove rotary seal and o-ring.



Loosen seal retainer ring using a 7/16” wrench by turning the four bolts counter clockwise.



With the four bolts removed, remove seal retainer.



Remove back plate and stationary seal at the same time.



Remove stationary seal and L-gasket.



Remove stationary seal from L gasket.



Naked back-plate.


200 Series Assembly

Place back plate over impeller, using care not to drop the

plate onto the impeller.


200 Series Assembly

Install new L gasket and stationary seal. Note stationary seal can be used on both

sides.


200 Series Assembly

Re-install seal retainer and 4 bolts.

Slide rotary seal over impeller shaft.


200 Series Assembly

Install new rotary seal o-ring over impeller shaft.


200 Series Assembly

Using the spring retainer upside

down press rotary seal o-ring into

place.


200 Series Assembly

Remove spring retainer and install

tabbed washer, align tabs with flats on the

rotary seal.


200 Series Assembly

Install spring retainer with springs pointed down. A light coat of grease or sealant can

be used to retain springs into the

retainer. Align tabs of washer onto the

retainer.


200 Series Assembly

Using a 1/8” allen wrench as a spacer,

press the sprint retainer down to

compress the wrench onto the rotary seal.

While keeping pressure on the spring

retainer, remove wrench and tighten

both set screws.


200 Series Assembly

Install splash defector with flat side toward the motor. Install

until deflector is over the end of

the impeller shaft.


200 Series Assembly

Apply a light coat of food grade anti-seize onto motor shaft and

install complete assembly onto the motor by aligning key and keyway.


200 Series Assembly

Press back plate onto the motor

adaptor to ensure clearance of .030” between impeller and back plate is obtained. Use a feeler gauge to

check clearances.


200 Series Assembly

If clearance between impeller and back plate needs to be adjusted, shims can be

added or removed from motor shaft.


200 Series Assembly

Re-install impeller nut and o-ring

onto shaft stud and tighten with 9/16”

wrench turning clockwise.


200 Series Assembly

Install causing over back plate and o-

ring.


200 Series Assembly

Install clamp and tighten, check to ensure clamp is

installed correctly by clamping both

casing and adaptor.



Install piping, turn power back into

operation.


Remember One Size seal fits all 200 series pumps!

Thank you

company confidential waukesha cherry-burrell 200 series centrifugal pump seal school company...

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