Graymills QC User Manual download pdf

795-91382

02-10

Graymills Corporation – 3705 N. Lincoln Ave. – Chicago, IL USA – www.graymills.com

Graymills

QC Series Pumps

In order to ensure the safe operation, never operate pump without motor installed snugly against the

flange. Read all warnings and cautions in OMI #795-08260 before any service work.

For proper pump cleaning and maximum bearing life, both motor and bearing cartridge should be

removed from housing.

Removing/Installing Motor

To remove: Make sure motor is cool.

a. QC Models- Remove pin clips from retaining screws below mating flange of bearing housing.

b. QCE Models- Remove pin clip from the retaining screw above mating flange of bearing

housing.

c. Using handle, lift motor away from mating flange. DO NOT USE ELECTRICAL

CONNECTIONS FOR LIFTING.

To install motor:

1. QC Models- If installing motor on bearing housing for first time, install threaded retaining

screws to proper depth. Place the motor on top of bearing housing so retaining screws

protrude below bearing housing flange. Adjust retaining screws so hole in screw protrudes just

below housing flange.

2. QCE Models- If installing motor on bearing housing for the first time, thread retaining screws

into bearing housing flange. Place motor on top of the bearing housing so retaining screws

protrude above motor flange. Adjust retaining screws until hole in screw just protrudes above

motor flange.

3. Both Models- Insert pin clip into the retaining screw. Twist clip in a ratcheting motion, tighten

retaining screw down until flanges on motor and bearing housing are mated tightly.

Removing Bearing Cartridge from Housing- QC and QCE Series

To obtain ultimate bearing life, bearing cartridge should be removed before cleaning pump

body.

Tools Required: 4mm hex key and two 5/8” open-end wrenches

1. Remove Motor as described above.

2. Remove (2) 4mm screws located inside bearing housing with hex key. This will allow shaft to

“float” and makes bearing cartridge removal easier.

3. Place (2) 5/8” open end wrenches on straddle-milled slots on the upper and lower sections of

the pump shaft. NOTE: Shafts are threaded with a left-hand thread, thus loosening

requires turning clockwise

1 2

Graymills 1
QC and QCE Versions 2

Summary of Contents

Page 1 - Graymills

795-91382 02-10 Graymills Corporation – 3705 N. Lincoln Ave. – Chicago, IL USA – www.graymills.com Graymills QC Series Pumps In order to en

Page 2 - QC and QCE Versions

795-91382 02-10 Graymills Corporation – 3705 N. Lincoln Ave. – Chicago, IL USA – www.graymills.com 4. Holding lower section stationary, rotate upper

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Graymills QC User Manual

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