AMT 3680 Series, Спецификация, информация и руководство по ремонту запасных частей

Страница: 1 / 8

Specifications Information and Repair Parts Manual 3680, 3690 and 3700 Series
3680-250-00 1 9/2016
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 specifications at any time without
incurring any obligation.
©2016 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.
Small Straight Centrifugal Pumps
Cast Iron, Bronze and Stainless Steel Models
Refer to pump manual 1808-634-00 for General Operating and Safety Instructions.
DESCRIPTION
These pumps are non-self-priming (gravity feed) units designed to handle liquid transfer, heating and cooling applications, where no suction lift is
required. All models feature semi-open, clog-resistant impellers and continuous duty, 3450 RPM, 56J frame motors. Discharge port can be rotated in 90º
increments to accommodate specific applications. Casing working pressure to 75 psi (517 kPa). These are manual units, no controls are supplied. For
use with nonflammable, nonabrasive liquids compatible with pump component materials.
CAST IRON UNITS
Pump construction is Investment Cast Iron casing and adapter. Cast 300 Series Stainless Steel impeller. Buna N mechanical shaft seal with carbon and
ceramic wear faces. O-ring casing seal. Handles liquids from 40º to 180º F (4º to 82º C).
BRONZE UNITS
Pump construction is Investment Cast Bronze casing and adapter. Cast 300 Series Stainless Steel impeller. Viton® mechanical shaft seal with carbon
and ceramic wear faces. O-ring casing seal. Handles liquids from 40º to 200º F (4º to 93º C).
STAINLESS STEEL UNITS
Pump construction is Investment Cast 300 Series Stainless Steel casing, adapter and impeller. Viton® mechanical shaft seal with carbon and ceramic
wear faces. O-ring casing seal. Handles liquids from 40º to 200º F (4º to 93º C).
MAINTENANCE
Make certain that unit is disconnected from power source before
attempting to service or remove any components!
MECHANICAL SEAL REPLACEMENT:
Refer to Figures 1, 2, & 3.
IMPORTANT:
Always replace both seal seat (Ref. No. 5) and seal
head (Ref. No. 6) to ensure proper mating of components! Also,
impeller seal (Ref. No. 9) should be replaced anytime impeller fastener
(Ref. No. 10) has been removed.
1.
Remove fasteners (Ref. No. 13) connecting casing (Ref. No.
12) to adapter (Ref. No. 4).
2. Remove casing.
Care should be taken not to "pinch" or "shave" casing seal (Ref.
No. 11) between adapter and casing.
3. Use a box and/or socket wrench to remove impeller fastener.
Remove impeller seal and impeller (Ref. No. 8).
IMPORTANT: Care should be taken to ensure that the same number
and thickness of shim washers (Ref. No. 7) are replaced behind
impeller that were removed. Shim washers are located directly behind
impeller and become loose as impeller is removed.
4.
Seal head can now be pulled from shaft.
5. Pry seal seat from adapter (Ref. No. 4).
The precision lapped faces on mechanical seal are easily
damaged. Handle your replacement seal carefully. Do not touch
polished seal faces.
IMPORTANT: Be sure that shaft shoulder does not damage polished
face (see Figure 1).
6.
Thoroughly clean all surfaces of seal seat cavity in adapter.
7. Using a clean cloth, wipe shaft and shaft sleeve to make
certain that both parts are perfectly clean.
8. Wet the rubber portion of new seal seat with a light coating
of soapy water. While wearing clean gloves or using a clean
light rag, press seal seat squarely into adapter recess, use
cardboard washer (usually supplied with new seal), place
over polished surface and use a piece of pipe or dowel rod
to press in firmly, but gently. Avoid scratching polished face.
9. Dispose of cardboard washer. Check again to see that
polished surface is free of dirt and all other foreign particles
and that it has not been scratched or damaged.
10. Wet inside rubber portion of new seal head with a light
coating of soapy water. Slide head onto motor shaft with
sealing surface facing seal seat. (See Figure 2).
11. Replace any impeller shims (Ref. No. 7) which may have
been removed in disassembly. (See “Shim Adjustment”
below.)
12. Screw impeller back into place, tightening until it is against
shaft shoulder.
13. Replace impeller seal and fastener and tighten until snug.
14. Remount casing and casing seal on adapter.
Figure 1
– Seal Replacement