Specifications Information and Repair Parts Manual
4421-95 thru 4443-95
4421-257-00
1
2/2015
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 specifications 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.
Industrial Coolant Pumps
Refer to pump manual 1808-634-00 for General Operating and Safety Instructions.
DESCRIPTION
These coolant/recirculating pumps are heavy-duty industrial units designed for a variety of applications involving evaporating coolers, fountains,
laboratories, bilge pumping, etc. Each pump is constructed using cast iron column and base parts, stainless steel impeller, shaft and hardware. All units
are manual models; no controls are supplied. For use with nonflammable liquids, compatible with pump component materials.
PERFORMANCE CHART
Models 4430-95 and 4431-95
GPM at Total Head in Feet
3'
6'
9'
12'
15'
Shut-Off
Water
48 46 42 38 32 21
ft.
500
SSU
40 38 34 30 25 21
ft.
Models 4421-95 and 4422-95
GPM at Total Head in Feet
3'
6'
9'
12'
15'
Shut-Off
Water
46 43 36 30 20 17
ft.
500
SSU
26 23 19 15 8 17
ft.
Models 4440-95, 4442-95 and 4443-95
GPM at Total Head in Feet
3'
6'
9'
12'
15'
18'
21'
24'
Shut-Off
Water
- - - 67 58 48 38 27 32
ft.
500
SSU
50 46 42 37 32 27 20 12 27
ft.
SPECIFICATIONS
Liquid Temperature…………………………………40
̊
to 200
̊
F (4
̊
to 93
̊
C)
Maximum Liquid Viscosity………..………………………………500 SSU
Specific Gravity (S.G) Maximum……………………………………….1.0
Discharge Outlet:
4421-95 thru 4431-95…………………………………..…………1 ¼” NPT
4440-95 thru 4443-95……………………………………………..1 ½” NPT
Pump Construction……………………………………………..…Cast Iron
Impeller Material…………………………………………….Stainless Steel
Fasteners…………………………………………………….Stainless Steel
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.
3. Familiarize yourself and others with all controls for this pump. Learn
how to stop pump/motor quickly in an emergency.
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 volute (Ref. No. 14) by removing cap screws (Ref.
No. 6), leaving volute cover (Ref. No. 9) attached to column
(Ref. No. 3).
3.
Place a 5/32" allen wrench through slot in top of column and
into one of the socket head screws of coupling (Ref. No. 2).
Rotate impeller (Ref. No. 11) so allen wrench is against side
of slot preventing shaft from rotating and remove acorn nut
(Ref. No. 12) and impeller. Nut and impeller both have right
hand thread.
4.
Remove allen wrench from slot and remove four cap screws
(Ref. No. 5) holding motor to column.
5.
Remove motor (Ref. No. 1) with shaft (Ref. No. 10) and
coupling assembly from column.
6.
Loosen socket head screws in coupling and remove
coupling from motor shaft and pump shaft.
7.
To reassemble, place motor in a vertical position then slide
coupling onto motor shaft until end of shaft is flush with split
in center of coupling. Tighten two socket head screws
holding coupling to motor shaft.
8.
Replace motor and coupling onto column and secure with
four cap screws with split washers (Ref. No. 4).
9.
Thread impeller onto shaft and tighten.
10.
Replace acorn nut and tighten.
11.
Turn motor and column, with volute cover attached, upside
down in a vertical position.
12.
Insert shaft assembly into column until there is a clearance
between impeller and volute cover of 0.024/0.011 for 4430-
95 thru 4422-95 and 0.159/0.146 for 4442-95 thru 4443-95
then tighten coupling.
13.
Using a new gasket (Ref. No. 13), reassemble volute to
volute cover.
14.
Rotate impeller to make sure it does not strike volute cover
or volute. If impeller strikes either volute cover or volute, go
back to step 12 and adjust clearance.
15.
Return pump to service.
CALL TOLL FREE 877-742-2878 FOR SALES AND SUPPORT
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Summary of Contents for 4430-95
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