GORMAN-RUPP AMT 576C-95 User manual

Specications Information and Repair Parts Manual 5760-95 thru 576E-95
5760-250-00 1 6/2015
Please read and save this Repair Parts Manual. Read this manual and the General Operating Instructions carefully before attempting to assemble, install, operate
or maintain the product described. Protect yourself and others by observing all safety information. The Safety Instructions are contained in the General Operating
Instructions. Failure to comply with the safety instructions accompanying this product could result in personal injury and/or property damage! Retain instructions
for future reference. AMT reserves the right to discontinue any model or change specications at any time without incurring any obligation.
©2015 AMT Pump Company, A Subsidiary of The Gorman-Rupp Company, All Rights Reserved.
Periodic maintenance and inspection is required on all pumps to ensure proper operation. Unit must be clear of debris and sediment. Inspect for leaks and loose bolts. Failure to do so
voids warranty.
Submersible Shredder Pumps
Refer to pump manual 1808-636-00 for General Operating and Safety Instructions.
MAINTENANCE
Make certain that unit is disconnected from power source before
attempting to service or remove any components!
POWER CORD REPLACEMENT
Periodically inspect power cord and replace whenever abrasion, cracking,
softening or other signs of deterioration are found.
Refer to Figures 1 and 2.
1. Place unit on workbench in upright position. Clean dirt and rust from
around wire cover (Ref. No. 7).
2. Remove two fasteners (Ref. No. 4) which hold cord retainer (Ref. No. 3).
3. Remove fastener(s) (Ref. No. 5) at handle (Ref. No. 6) to free wire loom
(Ref. No. 2).
4. Remove four fasteners (Ref. No. 8) which hold wire cover in place.
5. Carefully pry cover from unit with screwdriver.
IMPORTANT: Be careful to keep rust and other debris from falling into motor
housing during cover removal.
6. Take note of proper wire conguration, and connect new power cord (Ref.
No. 1) in identical fashion.
If unsure about above information or wiring diagrams, consult an
electrician familiar with motor wiring.
7. Clean sealing anges if necessary and reassemble pump in reverse
order.
IMPELLER INSPECTION /REPLACEMENT
If pump develops poor performance characteristics, impeller may be worn or
clogged.
IMPELLER INSPECTION
Refer to Figure 2
1. Place unit on workbench in upright position and clean rust and buildup
from around pump-to-motor ange.
2. Remove four short fasteners (Ref. No. 15), which attach pump to motor.
3. Lift motor assembly up out of pump assembly and lay on workbench in
horizontal position. Rap down on pump body with soft mallet, if necessary,
to separate parts.
4. Inspect impeller (Ref. No. 26). If clog is found, remove debris and
reassemble in reverse order. If damage to impeller is found, such as
pitting, deep grooves, or breakage, proceed to next section.
IMPELLER REPLACEMENT
1. Remove impeller fastener (Ref. No. 28) by unscrewing in counterclockwise
direction.
NOTE: To prevent motor shaft from turning, wedge a screwdriver between
impeller vane and impeller fastener (see Figure 1).
2. Slide off impeller washer (Ref. No. 27). Impeller is keyed to motor shaft
and can now be pulled free.
3. Install replacement impeller and reassemble in reverse order.
MECHANICAL SEAL REPLACEMENT
Motor internals are protected from contact with liquid being pumped by a
mechanical shaft seal and oil cavity. When seal wears out, potential motor life
will be compromised. Therefore, periodic seal replacement is recommended.
Time interval between replacements will depend on abrasiveness of liquid
being pumped, temperature, total accumulated runtime, etc.
IMPORTANT: Always replace seal head (Ref. No. 18) and both seal seats (Ref.
Nos. 17 & 19) at same time to ensure proper mating of components.
Refer to Figure 2
1. Disassemble pump by following directions in both “Power Cord
Replacement” and “Impeller Inspection / Replacement” sections.
DESCRIPTION
These heavy duty centrifugal Submersible Shredder Pumps are intended for use in residential, commercial, and industrial settings. Examples include: sewage,
wastewater and other general processing applications involving dirty liquids with small solids. Submersible design means low noise and no priming issues.
Each unit is completely assembled and includes a self-cleaning, semi-open cast iron impeller featuring a tungsten carbide cutting tip for durability while helping
to break up solids. Pumps incorporate a mechanical shaft seal with long lasting silicon carbide wear faces and feature a secondary shaft seal and oil chamber.
Pumps have a 3450 RPM electric motor tted with an unnished power cord that requires eld wiring (no controls are supplied). Motors are rated continuous duty
and single phase units have automatic restart thermal overload protection. Handle liquids from 40° to 104° F (4° to 40° C). For use with non-ammable liquids
compatible with pump component materials.
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AMT Pumps 576C-95

Specications Information and Repair Parts Manual 5760-95 thru 576E-95
5760-250-00 2 6/2015
2. With unit on its side and wire cover, pump assembly and impeller removed,
lift shaft key (Ref. No. 13) from shaft/rotor (Ref. No. 12) using a pliers.
3. Clean rust and buildup from unit.
4. From top of unit, remove four long fasteners (Ref. No. 10), which attach
lower end bell (Ref. No. 16) to motor case (Ref. No. 11).
5. Rap on ears of lower end bell with a soft mallet to break it free from motor
case. Next, carefully guide lower end bell along with shaft/rotor and
bearing assembly out of motor case.
6. Drain oil from seal cavity by removing drain screw (Ref. No. 23) and seal
(Ref. No. 22) from seal plate (Ref. No. 21). Then tip components upright
overtop of a catch pan until oil is drained.
7. Remove three fasteners (Ref. No. 25) and pry out seal plate with
screwdriver. Slinger washer (Ref. No. 24) will come free at this time.
8. Use a press or gear puller to remove shaft and bearings from lower end
bell. Shaft seal head will now be free.
IMPORTANT: Shaft seal head (with spring) has unique ends and two seal
seats are different from one another also. Be sure to note size and color of
each before disassembly so that new parts are installed in proper orientation.
9. Remove upper seal seat (Ref. No. 17) from lower end bell by using a
screwdriver or dowel to press on seal from rear. Do the same for lower
seal seat (Ref. No. 19) in seal plate.
10. Clean seal seat cavities before inserting new seals.
11. Carefully wipe polished surface of new seal seats with a clean cloth.
12. Wet outside of rubber portion of seal seats with a light coating of soapy
water.
13. Press each new seal seat squarely into cavity in both seal plate and lower
end bell. If seal seat does not press squarely into cavity, it can be adjusted
into place by pushing on it carefully with a piece of pipe or dowel. Always
use a piece of cardboard between pipe and seal seat to avoid scratching
seal seat. (This is a lapped surface and must be handled very carefully.)
14. After each seal seat is in place, be sure that it is clean and has not been
marred.
15. Using a clean cloth, wipe shaft and make certain that it is perfectly clean.
16. Carefully guide motor shaft through seal seat and use a press to seat
bearing back into lower end bell.
17. Apply a light coating of soapy water to inside rubber portion of seal head
and slide onto shaft (be sure to start correct end rst).
18. Place seal plate back onto lower end bell being careful to guide shaft and
avoid damage to seal seat. Secure with fasteners.
19. Press slinger washer back in place.
20. Rell cavity with oil through ll hole and reassemble in reverse order.
Submersible Shredder Pumps
Figure 1 - Impeller Removal
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AMT Pumps 576C-95

Specications Information and Repair Parts Manual 5760-95 thru 576E-95
5760-250-00 3 6/2015
For Repair Parts contact dealer where pump was purchased.
Please provide following information:
-Model Number
-Serial Number (if any)
Part description and number as shown in parts list
Figure 2 - Repair Parts Illustrations - 2 & 3-Inch
Submersible Shredder Pumps
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AMT Pumps 576C-95

Specications Information and Repair Parts Manual 5760-95 thru 576E-95
5760-250-00 4 6/2015
Part Number for Models
2-inch - 1HP 3-inch - 2HP
5760-95
5761-95 5763-95
Ref 5762-95 5764-95
No. Description 576B-95 576C-95 Qty
1 Power Cord Kit - 110VAC, 1PH 5760-350-90 - 1
Power Cord Kit - 220VAC, 1PH 5761-350-90 5763-350-90 1
Power Cord Kit - 220VAC, 3PH 5762-350-90 5764-350-90 1
Power Cord Kit - 440VAC, 3PH 576B-350-90 576C-350-90 1
(includes Ref. Nos. 1, 2, 3, and 4)
2 Wire Loom Incl. w/ Ref. 1 Incl. w/ Ref. 1 1
3 Retainer Incl. w/ Ref. 1 Incl. w/ Ref. 1 1
4 Fastener Incl. w/ Ref. 1 Incl. w/ Ref. 1 2
5 Fastener * * 2
6 Handle Kit 5760-100-90 5763-100-90 1
7 Wire Cover - - -
8 Fastener * * 4
9 Seal Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
10 Fastener - - -
11 Motor Case - - -
12 Shaft/Rotor - - -
13 Shaft Key - - -
14 Seal Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
15 Fastener * * 4
16 Lower End Bell - - -
17 Upper Seal Seat Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
18 Seal Head Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
19 Lower Seal Seat Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
20 Seal Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
21 Seal Plate - - -
22 Seal Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
23 Drain Plug * * 1
24 Slinger Washer Incl. w/ Ref. 35 Incl. w/ Ref. 35 1
25 Fastener * * 4
26 Impeller Incl. w/ Ref. 34 Incl. w/ Ref. 34 1
27 Impeller Washer Incl. w/ Ref. 34 Incl. w/ Ref. 34 1
28 Impeller Fastener Incl. w/ Ref. 34 Incl. w/ Ref. 34 1
29 Casing Kit 5760-001-95 5763-001-95 1
30 Base Incl. w/ Ref. 34 Incl. w/ Ref. 34 1
31 Fastener Incl. w/ Ref. 34 Incl. w/ Ref. 34 4
32 Strainer Kit 5760-170-90 5763-170-90 1
33 Fastener * * 3
34 Wear Plate & Impeller Kit 5760-010-90 5763-010-90 1
(includes Ref. Nos. 26, 27, 28, 30, and 31)
35 Seal Kit (not shown) 5760-300-90 5763-300-90 1
(includes Ref. Nos. 9, 14, 17, 18, 19, 20, 22, and 24)
36 Start Capacitor - 110VAC, 1PH 5760-351-00 - 1
Start Capacitor - 220VAC, 1PH 5761-351-00 5763-351-00 1
37 Run Capacitor - 110VAC, 1PH - - 1
Run Capacitor - 220VAC, 1PH - 5761-351-00 1
(*) Standard Hardware Item, Available Locally
Repair Parts List
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AMT Pumps 576C-95