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Specifications Information and Repair Parts Manual  

     

4410-95 and 4411-95

4410-258-00

1

12/2013

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.

©2013 American Machine & Tool Co., Inc. of PA, 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.

3/4-Inch Industrial Coolant Pumps

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

 

OPERATION

1.  Liquid level should always be below opening located in top of column. 

Motor is NOT submersible.

2.  Activate unit. No controls are supplied with this unit. Dry running will not 

harm pump or motor.

MAINTENANCE

Make certain that the unit is disconnected from the power source before 

attempting to service or remove any component! Failure to do so could 

result in electrical shock.

IMPELLER MOTOR REPLACEMENT PROCEDURE

1.  Remove pump assembly from tank or reservoir.

2.  Remove base volute housing (Ref. No. 12) and gasket (Ref. No. 11) by 

removing four hex head cap screws (Ref. No. 7).

3.  Remove impeller (Ref. No. 9) from motor shaft (Ref. No. 1) by loosening 

set screw (Ref. No. 10) in hub of impeller. This is accessible through 

opening between column (Ref. No. 4) and cover plate (Ref. No. 8).

4.  Remove motor by removing four hex nuts (Ref. No. 3) and lift motor and 

shaft from column.

5.  Reassemble in reverse order using a new gasket between base volute 

and cover plate.

NOTE:

 A proper running clearance is 0.020” between impeller and cover plate.

DESCRIPTION

These coolant/recirculating pumps are heavy-duty industrial units suitable for a variety of applications involving evaporation coolers, fountains, laboratories, bilge

pumping, etc. Each pump is constructed using cast iron column and base parts in addition to a stainless steel impeller, shaft and hardware. All units are manual 

models, no controls are supplied.

NOTE:

 These pumps are for use with nonflammable liquids compatible with pump component materials. The motor on these pumps is not intended to be  

submersed in liquid.

Outlet

GPM of Water at Total Head in Feet

Shut**

Piping

3’

6’

8’

Off

3/4” NPT

14

11

6

10 ft

Performance Charts

Figure 1 – Dimensions (Inches)

NOTE:

 All dimensions have a tolerance of ± 1/8”.

(*) Standard NPT (female) pipe thread.

(†) This dimension may vary due to the

motor manufacturer’s specifications.

Outlet

GPM of 500 SSU Liquid at Total Head in Feet

Shut**

Piping

3’

6’

8’

Off

3/4” NPT

8

6

5

10 ft

(**) To convert to psi, multiply by specific gravity and divide by 2.31.

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