Gormann-Rupp Pumps AMT 3670-94 Instructions de montage

Specications Information and Repair Parts Manual 3670-94

3670-253-00 1 4/2015

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.

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.

Bronze Marine Pump

Refer to pump manual 1808-634-00 for General Operating and Safety Instructions.

INSTALLATION

Because of crystallization and erosive material on shaft seal (Ref. No. 11),

installation of a seal wash is recommended to avoid premature leaks. Two

types may be used, a recirculated liquid type or a clean liquid type. Sometimes

a periodic seal cleaning is unavoidable.

Use pipe or hose to connect drain port on front of casing (Ref. No. 15) to seal

ush port on side of adapter (Ref. No. 9). Whenever pump is running, this re-

circulation line will ush seal.

Or, connect a line supplying clean liquid to seal ush port on adapter. Always

use an in-line check valve on this line. Flush as required.

MAINTENANCE

Disconnect from power source before servicing or inspecting the pump

for any reason. Failure to do so could result in fatal electrical shock!

MECHANICAL SEAL REPLACEMENT

Refer to Figures 1, 2 and 3.

IMPORTANT: Always replace both the seal seat and the seal head (Ref. No.

11) to ensure proper matching of components!

1. Unthread cap screws (Ref. No. 2) and remove casing (Ref. No. 15) and

o-ring (Ref. No. 14).

2. Unscrew impeller (Ref. No. 13) from shaft (Ref. No. 7). To keep the shaft

from turning, remove three screws holding the motor fan guard and

remove the guard. Loosen the screw clamping the fan to the motor shaft

and remove the fan. When the fan is removed, the shaft can be held using

vise grip pliers or other suitable means.

3. Remove the three hex nuts (Ref. No. 8) and remove the adapter (Ref.

No. 9).

4. Lay the adapter face down on a at stable surface and press the seal

cartridge from the adapter.

5. Pry the seal seat from the rear of the impeller with a screwdriver or other

suitable means.

6. Clean the recess in the adapter for the seal cartridge and the recess in the

impeller for the seal seat before inserting any new parts.

7. Inspect the ceramic face of the seal seat and carbon face of the cartridge

to insure they are clean and not marred.

DESCRIPTION

This non self-priming, low pressure, centrifugal pump is intended for liquid transfer, re-circulation and wash down applications in marine environments where no

suction lift is required. Pump is sized for saltwater (1.03 specic gravity) and features provisions for the installation of an automatic seal wash. This may extend

shaft seal life by retarding salt crystallization on seal wear face. Seal wash hose not included. For use with nonammable, non-abrasive liquids compatible with

pump component materials. Units are equipped with a TEFC (Totally Enclosed Fan Cooled), ball bearing, splash protected, capacitor start, 4 pole motor. Thermal

protection not provided. The motor has ON/OFF switch, standard plug and six foot cord.

Figure 1 - Mechanical Seal Replacement

Figure 2 - Mechanical Seal Replacement

Specications Information and Repair Parts Manual 3670-94

3670-253-00 2 4/2015

8. Press the new cartridge into the recess in the adapter. A sealing compound

(such as silicon or Permatex) may be used to assure a water tight t on the

outside of the cartridge.

9. Wet the rubber portion of the ceramic seat with a light coating of soapy

water.

10. Press the seal seat squarely into the cavity in the impeller. If the seal

seat does not press squarely into the cavity, it can be adjusted in place

by pushing on it with a piece of pipe. Always use a piece of cardboard

between the pipe and the seal seat to avoid scratching the face of the seal

seat. This is a lapped surface and must be handled very carefully.

11. After the seal seat is in place, check that it is clean and has not been

scratched or cracked.

12. Mount the adapter on the motor mounting face making sure the seal ush

part is approximately in the 1 o’clock position when facing the pump.

13. Replace the impeller and tighten, make certain any shims (Ref. No. 12)

previously used are in place.

14. Place the o-ring seal on the adapter and replace the casing. Replace and

tighten the cap screws.

15. Before proceeding to replace the fan and fan guard, turn the shaft to make

certain the impeller turns free and is not rubbing the casing.

16. If the shaft turns free replace the fan and fan guard. If it rubs the casing

follow steps 1 and 2. Remove any shims from the shaft and reassemble

following steps 13 thru 16.

SHIM ADJUSTMENT

When installing a replacement impeller (Ref. No. 13) or motor (Ref. No. 1), it

may be necessary to adjust the number of shims (Ref. No. 12) to ensure proper

running clearance between the impeller and the casing. Proceed as follows:

NOTE: A proper running clearance is less than 0.010”.

1. For impeller replacement, add one 0.010” shim in addition to those

removed originally.

2. For motor replacement, add two 0.010” shims in addition to the shims

removed during disassembly.

3. Reassemble the pump as described in steps 13 thru 16.

IMPORTANT: Be sure that the casing is snugly in place and check the shaft to

make sure it is turning freely. If it turns freely, check to be sure that the adapter

and casing are tted tight together. If they are not, tighten the fasteners (Ref.

No. 2) and recheck the shaft for free turning. Tighten carefully, turning the shaft

while tightening so that the motor bearings are not damaged in the event that

too many shims were installed. If shaft seizes before fasteners are completely

tight, disassemble the pump and remove one shim and repeat reassembly.

Bronze Marine Pump

Specications Information and Repair Parts Manual 3670-94

3670-253-00 3 4/2015

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 3 - Repair Parts Illustrations

Bronze Marine Pump

Repair Parts List

Ref Part Number for Model

No. Description 3670-94 Qty

1 Motor 1626-017-00 1

2 Fastener 1718-001-00 9

3Washer 1766-020-00 4

4 Rubber Foot 1508-000-00 4

5 Nut 1774-000-00 4

6 Fastener 1736-005-00 2

7 Stub Shaft 3670-140-00 1

8 Nut 1772-012-00 3

9Adapter 3670-033-00 1

10 1/8” NPT Pipe Plug 1768-000-00 2

11 Seal Assembly - Buna N 1640-161-92 1

12 Shim Kit 1806-044-90 1

13 Impeller 3680-012-00 1

14 Casing O-Ring - Buna N 1582-000-00 1

15 Casing 3680-004-09 1

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