Ross CDA-10 Installation, Maintenance And Operating Manual Download Page 13

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2. Mechanical Seals, single.

If Single Mechanical Seals are installed, the procedure is generally the same as above minus the plastic shim
stock. Refer to the Vendor Literature section for more specific details regarding the Mechanical Seals. Do not
lubricate the seal faces, only the o-rings.

1. Under normal conditions, the mechanical seals require no routine maintenance. Check the oil level in the bearing
tower prior to every use and add or replace as necessary.
2. If a seal starts to leak, it must be replaced.
3. Drain the oil from the housing by removing the threaded pipe plug located to one side of the shaft.
4. Remove the Seal Cap. The Stationary portion of the seal will be installed in the seal cap.
5. The Rotary portion of the seal is installed up and inside of the housing and is in contact with the lower bearing.
The seal may have “set screws” that hold the rotary portion of the seal to the shaft. These set screws must be
properly loosened to allow the rotary portion of the seal to be removed. Once free, pull the rotary seal down the
shaft, out of the housing and off the end of the shaft.
6. After removal, examine the seal for signs of corrosion. If corrosion is present, consult the factory as a
replacement seal will require special materials compatible with the your formulas components. Install the new seal
per manufacturer’s instructions.

Do not lubricate the seal faces during installation, mechanical seals must

be installed "dry" otherwise they will not seal.

a. All O-Rings on the seal caps should be replaced whenever a new seal is installed.

B. BEARINGS.

1. The upper and lower bearings in the Standard Configuration for a

VACUUM RATED MIXER

with Dry

Running Flexi-Lip Seals and an

ATMOSPHERIC RATED MIXER

without seals, are lubricated by grease and

should be greased regularly or at least every 500 hours. If a bearing makes an unusual noise or runs unusually hot, it
must be replaced. Contact the factory for replacement.

a. Remove the belts, pulleys and bushings from the mixer shaft.
b. Loosen the set screws holding the outer race of the bearing.
c. Loosen the set screws on the locking collar/inner race of the bearing.
d. Remove the bearing.
e. Remove the mechanical seal cap and mechanical seal assembly.
f. Remove the internal snap ring.
g. Remove the bearing.

2. For

VACUUM RATED MIXERS equipped with Single Mechanical Seals

(Oil Lubricated), the bottom shaft

bearings used in the bearing housing/tower in the

VACUUM RATED MIXER

are lubricated by the same oil as

the mechanical seals in the tower assembly. If excessive noise or heat is detected, these bearings will most likely
require replacement. Refer to the tower assembly drawing for proper removal and replacement.

a. Remove the mechanical seal cap and mechanical seal assembly.
b. Remove the internal snap ring.
c. Remove the bearing.

3. The upper bearings in

all MIXERS

are lubricated by grease and should be greased regularly or at least every

500 hours. If a bearing makes an unusual noise or runs unusually hot, it must be replaced.
Contact the factory for replacement.

a Remove the belts, pulleys and bushings from the mixer shaft.
b. Loosen the set screws holding the outer race of the bearing.
c. Loosen the set screws on the locking collar/inner race of the bearing.
d. Remove the bearing.

C. GEAR REDUCER.

The gear oil in the Anchor Gear Reducer should be changed after the initial 100 hours of operation, and
thereafter, at regular intervals of 2500 hours or as recommended by the manufacturer. Refer to the gear
manufacturer’s manual for additional information, lubrication types and correct volume of oil.