INDEX I. GENERAL PAGE · 2019. 11. 8. · WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 1 Rev 3. I. GENERAL

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Rev 3

INDEX I. GENERAL PAGE A. Introduction 1 B. Description 1 C. Inspection and Storage 2 Figure 1 4 II. INSTALLATION A. Foundation 5 B. Leveling and Drive Alignment 5 C. Piping 5 D. Accessories (Optional) 5 III. OPERATION A. Preliminary Inspection 6 B. Start-Up 7 C. General 8 D. Operating Rules 8 E. Troubleshooting 9 IV. MAINTENANCE A. Classifier 10 B. Lubrication 11 C. Wemclone 12

D. Seal Installation Instructions (Dwg.# 60857) 15 E. Inspection Procedure - 400L Bearing 16

400-L Bearing Assembly (Dwg.# 66245) 18

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 1 Rev 3 I. GENERAL INFORMATION A. Introduction Thank you for purchasing a WEMCO grit separation system. This system has been

engineered and designed to meet your specific grit removal needs. This manual will provide you with the information necessary for proper maintenance and

operation. Its study will also facilitate training of operation and maintenance personnel as well as providing a base for the establishment of a maintenance schedule.

WARNING

PLEASE STUDY THESE INSTRUCTIONS CAREFULLY BEFORE PUTTING THE HYDROGRITTER INTO SERVICE. ADHERENCE TO THESE INSTRUCTIONS IS NECESSARY FOR SATISFACTORY START-UP OF YOUR WEMCO HYDROGRITTER. OPERATING PERSONNEL MUST READ AND UNDERSTAND THE START-UP AND OPERATION PARAGRAPHS.

B. Description The WEMCO Hydrogritter is a compound grit separating, washing, dewatering, and

removal process which is accomplished through the tandem operation of a cyclonic grit separator(s), and a helical conveyor-type grit Classifier. The theory of operation can be explained as follows:

Please refer to Figure 1. In the WEMCLONE, the feed fluid pressure energy injects the slurry through the feed inlet

nozzle (B) into the cylindrical WEMCLONE body (C) producing mass rotation. The relative motion of the materials in the liquid separates the solids from each other and from the liquid. The WEMCLONE's involute feed entry (A) minimizes turbulence in transferring the fluid mass from a linear to a cylindrical form.

The centrifugal force generated causes the heaviest particles to migrate towards the rim

and down to the apex valve (D) at the bottom of the cone, thus permitting the discharge of the coarser fractions into the classifier. Finer or lighter fractions as well as sludge at the interior of the revolving mass, are forced inward and upward by the resulting air core (E) where they are skimmed from the slurry by the vortex finder (F) and discharged through the overflow.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 2 Rev 3 The incline of the Classifier's trough provides a quiet settling pool at the lower end where the WEMCLONE's underflow undergoes its final separation and washing. In the

settling pool, the heavier inorganic particles settle to the bottom where they are raked up by the helical conveyor. The lighter inorganics as well as organics are floated over the factory bars at the lower end of the classifier to discharge. As the helical conveyor moves the settled solids up the incline, dewatering takes place prior to discharge at the upper end.

C. Inspection And Storage

WARNING NEVER OPERATE CONVEYOR WITHOUT COVERS, GRATING, GUARDS AND OTHER SAFETY DEVICES IN POSITION.

The Hydrogritter should be inspected for damage as soon as it is received. Any damage

should be noted on the delivery receipt to aid in the filing of a damage claim.

WARNING WHEN PERFORMING EQUIPMENT MAINTENANCE OR IF THE HYDROGRITTER IS TO REMAIN OUT OF SERVICE FOR A PERIOD OF TIME, THE EQUIPMENT ELECTRICAL SERVICE MUST BE LOCKED OUT WITH AN APPROVED LOCKOUT AND KEY. FAILURE TO LOCKOUT EQUIPMENT MAY RESULT IN INJURY.

If the unit is not to be installed and operated immediately, it should be stored in a clean dry

place and all exposed unpainted surfaces protected from rust and corrosion. If the unit is to be installed but not operated for a period in excess of two months, WEMCO recommends the following action be taken to protect the equipment:

1. Raise the spiral to its fully elevated position and thoroughly grease the lifting device lead

screw. 2. Lower the spiral to its lowest position for its storage period.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 3 Rev 3 3. Check the lubrication of the speed reducer. If grease lubricated, it will require no further

service at this time. If oil lubricated, check the oil level in the sight tube. It should be at the upper red line or slightly below when the unit is not operating. If the oil level is low or the reducer contains no oil, fill/refill unit. (See Maintenance Section in this manual for proper type of lubrication.)

4. Motor bearings are prelubricated and require no further service at this time. If the unit is to

be subjected to high humidity, however, the drain plugs of the unit should be removed and a small amount of grease purged monthly.

5. At least every two weeks the helical conveyor should be rotated one full revolution to

distribute all lubricants. This can be accomplished by simply turning the V-belts. 6. The drive sheaves and V-belts should be adequately protected from moisture, rust and

corrosion throughout the storage period. WEMCO assumes that the equipment will be stored in accordance with the above

Iinstructions and assumes no liability for damage resulting from improper storage.

WARNING KEEP AREA AROUND CONVEYOR, DRIVE AND CONTROL STATION FREE OF DEBRIS AND OBSTACLES.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 4 Rev 3

FIGURE 1

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 5 Rev 3 II. INSTALLATION A. Foundation The foundation for the WEMCO Hydrogritter must be rigid and level. For size and location of

anchor bolts, refer to the certified General Arrangement Drawing provided.

WARNING EQUIPMENT LIFTING DEVICES SUCH AS CHAIN, LIFTING EYES, HOOKS, ETC. MUST BE APPROVED BY LOCAL, STATE, OR FEDERAL SAFETY CODES. HOISTS AND CRANES MUST BE ADEQUATELY SIZED TO LIFT RATED LOADS. FAILURE TO USE APPROVED LIFTING DEVICES MAY RESULT IN INJURY.

B. Leveling And Drive Alignment After the Classifier has been placed on its anchor bolts, the tank level should be checked at

the factory bars located at the lower end of the tank. This level must be exact as any unlevel condition will affect the grit settling potential of the pool and impede the operation of the unit. Correct any out of level condition by shimming as necessary.

Check the alignment of the V-belt drive by placing a straight edge against the flat side of both

sheaves. The rim of both sheaves should touch the straightedge along the entire width of the rim. The sheave should be checked in two or three places. If the sheaves require alignment, loosen the motor bolts to move the sheaves into alignment.

C. Piping After alignment, install the following piping: 1. Cyclone overflow (See III.A.5 below and drawings furnished with your operation and

maintenance manual.) D. Accessories (Optional) Zero Speed Switch 1. See MFA 4p manual for zero speed switch installation and wiring. Note: Zero speed switch power must turn on/off with classifier power.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 6 Rev 3 2. Classifier tank overflow (See drawings furnished with your operation and maintenance

manual, and contract drawings.) 3. Classifier tank drain (piping to floor drain with valve is optional - see contract drawings)

Tank draining would be necessary only if needed for maintenance of the tank interior. III. OPERATION

WARNING ALL ELECTRICAL CONNECTIONS AND WIRING ARE TO BE IN COMPLIANCE WITH LOCAL BUILDING AND SAFETY CODES. DO NOT OPERATE EQUIPMENT WITH OPEN ELECTRICAL BOXES OR FITTINGS. CONTACT WITH INCORRECTLY WIRED EQUIPMENT COULD RESULT IN INJURY.

A. Preliminary Inspection Before placing the Hydrogritter in operation the following items should be checked: 1. Check all bolting elements for tightness, paying particular attention to the lower bearing

mounting bolts.

WARNING WHEN HELICAL CONVEYOR IS BEING CHECKED, THE HYDROGRITTER ELECTRICAL SERVICE MUST BE LOCKED OUT USING AN APPROVED LOCKOUT AND KEY. FAILURE TO LOCKOUT EQUIPMENT MAY RESULT IN INJURY.

2. Rotate helical conveyor at least one full revolution by hand to ensure spiral is free from

obstructions. The spiral should be in its lowest position so the lower bearing housing rests in the support provided for it in the deep end of the tank.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 7 Rev 3 3. The lubrication instructions in the Maintenance Section should be read and followed before

starting. 4. Ensure full length guard is in place over screw and securely fastened. Ensure belt guards

are in place and fastened. All guards must be in place during operation to protect operator from possible injury. Power must be disconnected from the machine prior to removing guards for service.

5. Ensure that cyclone overflow piping is vented to the atmosphere. WEMCO recommends a

tee the size of the cyclone overflow size be used on the overflow venting. The tee should be extended upward 3-4 feet.

B. Start-Up

WARNING GUARDS, ACCESS DOORS AND COVERS MUST BE SECURELY FASTENED BEFORE OPERATING THIS EQUIPMENT. LOCK OUT POWER BEFORE REMOVING GUARDS, ACCESS DOORS AND COVERS. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY OR PROPERTY DAMAGE.

After the unit has been bumped to determine proper rotation (CW viewed from motor end),

the Classifier must be bedded in with clean sand. This is accomplished by first filling the tank with water and then with the unit running, loading it with sand in the pool area until sand is discharged by the conveyor at the upper end of the Classifier.

WARNING

DO NOT PLACE HANDS OR FEET IN CONVEYOR OPENING.

The bedding in of the Hydrogritter accomplishes two functions; first, it establishes a bed

for the spiral to work against, and second, it eliminates the possibility of stagnant grit filling the void between the spiral and the tank.


The water connection at the top end of the classifier tank (located in the lower right corner of the tank end when facing the drive end) provides a means of keeping a channel (formed by the tank wall and an angle iron mounted inside on the bottom of the classifier tank) free of grit. During operation, as the grit is augured up to the discharge point, free water drains into this channel and back into the pool area. Small particles of grit are carried into the channel by the draining action. If this grit is not "washed" back into the pool area and is allowed to build up and restrict free drainage back to the pool a much wetter product will result. A solenoid valve by others is usually wired to the Hydrogritter drive control circuit to provide control of this water supply so water is consumed only while the Hydrogritter is in operation, also, a manual valve is provided for flow control by WEMCO.

C. General The specific characteristics of any WEMCLONE such as sizes of vortex finder, apex orifice,

and feed inlet pressure are chosen for each application to obtain maximum efficiency for the conditions of the application. Many variables affect the operation of a WEMCLONE and because of this a few rules of operation should be understood and followed by operating personnel.

D. Operating Rules 1. Wemclone Steady Feed: A WEMCLONE is a hydraulic vessel relying on a constant volume of feed

for peak efficiency. Changes in the rate of feed alter the force pattern within the cyclone with consequent changes in character of products. Feed density can fluctuate within certain narrow limits without any serious effect on efficiency. The best separative operation is obtained with constant volume at constant density.

Pressure: The lowest feed pressure that yields the desired results should be used.

WEMCLONES are always selected to meet this requirement. Since the required fluid energy is usually supplied by vortex type centrifugal pumps, some form of speed/flow control on the pumps is essential to achieve the required pressure to the cyclone.

Apex Discharge: If the feed volume and density vary, the apex discharge varies in

character. As the feed volume or density increase, the amount of solids reporting to underflow solids decrease. A spray discharge in the shape of a hollow cone yields peak efficiency and should be maintained. If the discharge forms a rope, this is an indication of excessive tonnage for the orifice in use and may cause plugging of the apex.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 9 Rev 3 The apex orifice is not used to control mesh of separation or inlet pressure, but is merely

an opening for discharging the cyclone's underflow at the same rate that it accumulates in the upper cone sections.

2. Classifier

WARNING DO NOT PLACE HANDS OR FEET IN THE CONVEYOR OPENING. NEVER WALK ON CONVEYOR COVERS OR GRATINGS. AVOID POKING OR PRODDING MATERIAL IN CONVEYOR WITH BAR OR STICK INSERTED THROUGH OPENINGS.

In normal operation the lower bearing should rest on the support provided for it at overflow

end of the tank. The classifier should never be shutdown while cyclones are feeding grit. The classifier

should be run 2 to 5 minutes after grit feed pumps are shutdown to prevent sanding in the classifier screw. If the screw becomes sanded in, the required torque may cause damage to the unit.

E. Troubleshooting In general, the solutions to any problems encountered with the WEMCLONE are simple. This

is due to the fact that the system has virtually no moving parts to wear out and affect operation, thus virtually all troubles encountered are caused externally to the equipment. Listed below are some common ailments and their solutions:

1. NO UNDERFLOW FROM THE WEMCLONE APEX: The most common cause is a clog in

the apex itself. The apexes of WEMCLONES are provided with hinged flanges for ease in checking for clogs. The second most common cause is unvented, or insufficiently vented overflow piping. This will cause a siphoning within the cyclone, pulling the entire flow into the overflow pipe.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 10 Rev 3 2. EXCESSIVE UNDERFLOW FROM THE WEMCLONE APEX: Again the most common

cause is a clog, only this time in the area of the vortex finder. This can be investigated and cleared simply by looking up the cyclone from the hinged apex with a light and clearing the clog if necessary with a hook or similar device. Insufficient feed pressure or extremely high densities can also cause excessive underflows as both these conditions reduce the centrifugal force created by the cyclone and allow excessive slurry to migrate to the apex.

If the foregoing solutions do not resolve your problem, please contact your nearest

WEMCO representative for assistance. IV. MAINTENANCE A. Classifier


Periodic inspection of the wearing shoes should be made. These shoes are attached to the

flights of the helical conveyor and are easily replaced when worn.


WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 11 Rev 3 Once a year the lower bearing should be removed from the unit and torn down for a complete

inspection. Inspection of the lower bearing should be made in a clean location away from the operating unit to preclude the possibility of contamination. The lower bearing will run trouble free if the inspection procedures located in this section are adhered to.

B. Lubrication - Cyclo Drive 2. Oil Lubricated - 24" Classifier

a. Oil Selection

Select such high quality lubricants as motor oil, high grade industrial gear oil or their equivalents. Lubricants should be for A.P.I. service MS.

The appropriate viscosities of these lubricants range from SAE 20 to 50 at ambient

temperatures between 14 and 122 degrees Fahrenheit. (ISO viscosity grade of 46 to 460.) See Table 1.

Table 1 - Recommend Oil Viscosity

AMBIENT TEMP. ° F

SAE MOTOR OIL NUMBER

ISO VISCOSITY GRADE

14 - 32 20W 46 - 68 32 - 95 30 - 40 100 - 150 95 - 122 50 220 - 460

Table 2 – Quantity of Oil

Classifier Size 18 24 30 36 Gallon 0.2 0.4 1.0 1.5

b. Oiling Procedure

Each SM-Cyclo drive is filled to the proper level before leaving the WEMCO factory. The oil in the reducer will be satisfactory for operating even if it is six to nine months from the time of shipment before the machine is placed in operation.


c. Oil Change

The first oil change should be made after 500 hours of operation. Subsequent oil changes are made after 2,500 hours of long continuous operation (12 to 24 hours per day) and after one year of short intermittent operation.

Before restarting an SM-Cyclo Drive reduction unit that has been out of operation for a long period, be sure to change the oil.

The oil can be removed by removing the bottom plug which secures the oil level gauge and the plug near the reducer mounting plate. Both must be out when draining oil.

d. Oil Level Control

When refilling the reducer after an oil change, take care that the oil level is at or above the upper red line in the oil level gauge when the unit is not operating and not lower than midpoint between the red lines during operation.

After refilling the reducer with oil, run the unit for 10 minutes and then, if required, top up the oil level so that it is midway between the two red lines on the oil gauge while the machine is running.

C. Wemclone All rubber or neoprene liners, except the apex liners, must be cemented in place. Each liner is

slightly longer than its respective housing so that each flange joint compresses slightly to produce an effective seal. On liners larger than the 1000 cone liner, this extra length must be equally proportioned between both ends when the liner is inserted in the housing.

A neoprene semi-contact rubber cement such as Master Quick Drying All Purpose Cement as

manufactured by Petronio Shoe Products Corp., 305 Cortlandt Street, Belleville, NJ 07109, or equal substitute. Note: Many commonly available cements are not satisfactory as they will not adhere to the smooth molded liner surfaces.

After cementing, the liners should be allowed to cure for three to four hours before returning

unit to operation. All liners must be installed and housing tightened correctly or the reverse step which is

designed into the assembly may become a ledge which will cause turbulence and interference with operation.

1. Inlet Head Liners a. Remove old liner by peeling it away from the housing, starting at the side opposite the inlet.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 13 Rev 3 b. Clean the housing surface thoroughly of all dirt and foreign material. The adhesive

material need not be removed if all that remains is a thin film. Degrease both housing and liner surfaces by wiping thoroughly with a solvent such as naphtha, or chlorinated hydrocarbon.

c. Apply one coat of adhesive to the inside of the housing and to the outside of the liner. The

entire contacting surface area must be covered. d. Place the inlet nozzle neck portion of the liner into position first, with a vertical fold or loop

in the liner on the opposite side. Place the inlet side tightly in place, then work the loop in place, pushing in both directions towards the inlet. Any remaining hump in the liner may be worked out by hand pressure. The lubrication of surfaces by the adhesive material while placing the liner makes possible a tight fit. On the series 2000 WEMCLONES, two men may be required.

2. Cone and Cylinder Liners The procedure for changing the cone and cylinder liners is the same as that for the inlet head

liners except as follows: a. The flanges must be cemented in place as well as the liner. b. The vertical fold or loop may be at any point on the circumference of the liner. c. These rubber liners are shipped blank so that bolt holes can be positioned exactly after the

liner is in place. Coat the exposed surface of the rubber flange with a soap solution, then place the ball of a ball peen hammer over the hole location, and strike the flat end sharply with another hammer, or use heavy duty scissors, or hole punch to cut out rubber at each hole location.

When reassembling the WEMCLONE, take up the flange bolts evenly all around, leaving a

uniform gap between the steel flanges. Do not overtighten so as to close this gap or the rubber flange will be pushed out of shape inwards, and the liners will be distorted.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 14 Rev 3 3. Cover Plate and Liner On the 1500 and 2000 series WEMCLONES, the cover plate liner is screwed to the cover.

Installation is started by fastening the liner to the cover plate, leaving the screws loose. The cover plate with the liner is then rotated over the inlet head liner so as to fit the cover plate liner inside the step in the inlet head liner. The adhesive acts as a lubricant to make this operation easier and should be placed around the periphery of the cover plate liner for this reason. The fit should be carefully checked by reaching through the cover plate hole, making sure there is no overlapping of the cover plate liner with the inlet head liner. The cover plate is then bolted to the inlet head housing prior to tightening the cover plate liner to the cover plate.

On the 1000 series WEMCLONES, the cover plate liner is laid on the inlet head liner to

produce an overlapping fit. There are no screws securing the cover plate liner to the cover plate.

4. Apex Liners Fixed apex liners are changed by removing the splash skirt and skirt ring. The apex valve will

then drop out and the replacement can be inserted. You do not have to cement apex liners in place. In cases where grit or other foreign material has accumulated between the inside housing surface and the liner, it may be necessary to remove the housing and the liner from the cyclone, and push the liner out of the bottom of the housing.

Hydraulic or adjustable apex valves are supplied with a fixed apex valve above them. The

adjustable unit is removed from the fixed unit allowing the fixed apex liner to drop out. The splash skirt and skirt ring are then removed from the adjustable apex assembly so that the adjustable apex liner can be removed from the lower end of the housing. To reassemble, the fixed apex is placed on and into the adjustable apex, and then the entire assembly is reassembled to the lower cone. The splash skirt is then slipped around the rubber protruding from the apex valve and the skirt ring is bolted into place. NOTE: It may be necessary to use soap as a lubricant when reinstalling the splash skirt.

5. Vortex Finders The vortex finder is changed by unbolting the overflow flange and removing the worn vortex

finder and installing the replacement. The overflow flange is then revolted, taking care that the gaskets on the top and bottom of the vortex finder flange are in place and not crimped.


DUO-CONE SEALS

WEMCO Dwg. 60857

INSTALLATION

HOW TO GET MAXIMUM LIFE FROM YOUR SEALS Proper handling and installation of Caterpillar Duo-Cone seals is vital to obtain maximum life and positive sealing protection afforded by these precision lapped units. Special attention is given during manufacturing and shipping to insure absolute cleanliness. To obtain maximum service, cleanliness during installation and while filling with oil must be the rule.

1. Rubber Sealing Ring or Toric 2. Metal Sealing Ring 3. Seal Retaining Lip 4. Seal Seat 5. Installing Tool

CLEAN ALL SURFACES BEFORE INSTALLATION When installing Duo-Cone seals, thoroughly clean all dirt or rust accumulations where seals are to be installed. AVOID CARELESS HANDLING Handle all parts with care to avoid damaging critical areas. The sealing face of seal (2) must not be nicked or scratched. REMOVE ALL PROTECTIVE COATING Remove all oil and any protective coating from seal (2) and from the seat (4) using a cleaning solvent and making certain all surfaces are dry.

ELIMINATE ROUGHNESS ON RAMP Check retaining lip(3) for rough tool marks or nicks. Smooth any nicks and re-clean. WIPE SEAL FACES CLEAN Before assembly, wipe the seal faces to remove any foreign material. Place a few drops of light oil on a cleaning tissue and completely coat the sealing faces of seals to assure corrosion protection and initial lubrication. EXERCISE CARE WITH TORIC Install rubber toric (1) so it sets uniformly on the seal ring (2). Be sure that the toric is not twisted and that it rests uniformly against the lip that prevents it from falling of the seal ring. Always install new rubber torics on new or used Duo-Cone seal rings. TOOLS THAT PROTECT RING DURING INSTALLATION Simple installer tools are available. A lip on the install tool (5) permits uniform pressure to be exerted directly on the rubber sealing ring and provides protection to the sealing surface. Press the rubber ring into the seat making certain that it is straight in the bore and inside the lip on the ramp. Dimension (X) must be uniform around the entire circumference of the seal. When an installer tool is not used, press with fingers on the rugger ring only, seating the ring inside the lip. Do not use a screwdriver or any sharp instrument to seat the ring. ALWAYS USE MATED SEALS Duo-Cone seals should always be installed in pairs; that is, two new seals together or two seals that have previously run together. Never assemble one new seal and one used seal together, or two used seals that have not previously run together.

Clar, Cat and are Trademarks of Caterpillar Tractor Co.

LEHQ1075 (5/75) Printed in U.S.A. Materials and specifications subject to change without notice Supersedes LE2 021047-02

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 16 Rev 3 D. INSPECTION PROCEDURE - 400L BEARING - FOR 24" CLASSIFIERS (RECOMMENDED INTERVAL - YEARLY) 1. Tools Required (in addition to standard mechanics tools) a. Allen wrenches (hex key) 7/32 & 3/8 b. Seal installation tool - Caterpillar #5M-2162 c. Seal installation instructions - WEMCO Dwg. 60857 d. Bearing assay. Dwg. 66245 2. Parts Required a. "O" ring, P/N 66241-1, 1 req'd. b. Toric rings, P/N 157232, 2 req'd. c. Recommended "on hand" spares - Item 12 (1 req'd), Item 5 (1 req'd), and Item 6 (1 req'd.). 3. Procedure


a. Remove bearing assembly from lower end of spiral. NOTE: The following procedure is to be performed in a clean area, free of any wind blown dust or similar contamination. b. Remove end cap, Item 3, and drain oil. After removing Item 9, socket head screws, Item 2,

housing, can be lifted off of the spindle exposing the seals for inspection. Discard gasket, Item 7.

c. Remove seals from spindle & housing and discard rubber toric rings. (New rings must be

installed to ensure continued, proper seal face pressure.) d. Carefully clean cast seals, housing and spindle (especially area of toric contact) to remove

any grit or other foreign material which might prevent an effective seal.

WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 17 Rev 3 e. Check spindle and bushing for abnormal wear or scratches. If found, replace oilite bushing,

Item 5, and polish out scratches with 600 grit wet or dry sandpaper or crocus cloth. f. Reassemble bearing as follows: 1) Place one half of Item 6, seal, (with rubber toric ring in place) into seal installation tool. 2) Place Item 1, spindle, flat on a clean surface, with seal cavity up. Carefully press seal

down into cavity until the toric ring "seats" into the cavity. a) Repeat Step 2) with Item 2, housing. 3) Cover seal faces and inside of Item 5 with light coat of oil, and lower housing onto spindle.

Compress seal assembly until spindle projects through housing. Place Item 12, thrust bearing, onto spindle, followed by Item 4, thrust washer. Install Item 9, screw, while still holding pressure on housing (pressure can then be removed).

4) Torque Item 9 to 43 - 48 ft. lbs. 5) Fill bearing to within 1/8” of rim on housing with SAE 10-40 multigrade oil. (Note: During filling

operation it will be necessary to tip assembly back and forth to permit the release of entrapped air and ensure the cavity is filled completely.)

6) Rub Item 7, gasket, with a light coat of oil and place on housing. 7) Place end cap, Item 3, onto housing and install 6 each Item 10, screws.




PARTS & SERVICE

For parts and service, call your local WEMCO representative whose name is on the front cover of this manual. Be prepared with the serial number of the unit and the item No.(s) of the parts needed shown in the assembly drawings in this manual.

Documents

INDEX I. GENERAL PAGE · 2019. 11. 8. · WEMCO DATA SHEETS WEMCO HYDROGRITTER SEPARATOR P11-D350-24” 1500C 11/8/19 Installation, Operation & Maintenance Page 1 Rev 3. I. GENERAL