CPE C Series Manuel d'instruction - Page 10

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MAINTENANCE

REPAIR

It is recommended that periodic inspection of all parts of the pump be made to prevent mal-

functions 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.

1. For D and F seals, examine the backplate sealing surface carefully for any defects that will shorten seal life.

2. Remove the carbon seal, o-ring seal, cup and spring. If your pump is equiped with a drive collar, remove it by

loosening set screws and sliding colar off the stub shaft.

3. 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 pressur-

izes the o-ring groove and augments the spring tension in keeping a tight joint at the sealling faces. The location of

width of the sealing face controls the balancing of the seal.

4. 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 1/32" from the body, it is advisable that the

carbon seal be replaced.

5. Remove the cascading water attachement 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 fluid

leakage into the motor along the armature shaft.

6. Remove the bolts securing the adapter to the motor frame and remove the adapter. Loosen the 4 set screws se-

curing 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 pry bar.

7. Examine the stub shaft sealing surface for nicks or scratches which can cause excessive o-ring seal wear or leak-

ing.

8. Attach a hoist to the motor if necessary, and remove the bolts securing the motor to the pump cart.

9. Inspect casing clamp for damage or wear and replace as required. Inspect the cart wheels, adapter and casing and

replace if necessary. The electric motor contains no feild servicable components therefore this manual does not

cover the maintenance, repair and wiring of the electric motor. For specific information contact CPE Systems.

Page 8

cpesystems.com

1-800-668-2268