AMT 3100-99 Specifications Information And Repair Parts Manual

Specifications Information and Repair Parts Manual
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.
©2011 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-Inch Trash Pedestal Pump
Refer to pump manual 1808-635-00 for General Operating and Safety Instructions.
DESCRIPTION
This self-priming (to 20 ft. lift) trash pump is a high capacity, heavy duty unit, designed for direct coupling drive or pulley
drive. Each pump is equipped with mechanical seal to reduce the likelihood of leakage and clog-resistant cast iron
impeller capable of handling solids up to 1-1/2" diameter. The pump is designed to handle water containing mud, sand,
sludge, solids and sewage.
MAINTENANCE
Always disconnect battery cables and spark plug
wire from spark plug before performing any
maintenance operation requiring disassembly of the
pump.
REPAIRS & REPLACEMENTS
NOTE: First examine exploded parts illustration which
shows all parts and how they are related to one another.
Different degrees of dismantling can be accomplished
depending on what areas of pump are to be reached.
Note that entire front pump assembly can be removed
by first removing (6) cap screws (Ref. No. 31). Impeller
(Ref. No. 17) and cutwater/wear plate (Ref. No. 20) are
subject to wear only by abrasive action of sandy or dirty
fluid. If badly worn, all these parts can be replaced easily
and pump thus restored to full efficiency.
Performance Chart
Pump
Speed Motor Motor
RPM HP RPM PD
3.0"
1800 1 ½ 1800
2.5"
1 ½ 3600
5.5"
2800 5 1800
3.5"
5 3600
7.0"
3600 7 ½ 1800
3.5"
7 ½ 3600
3100-254-00
Sheave
Pump No. of
PD Grooves 5'
3.0"
1
10,600
5.0"
1
3.5"
2
-
4.5"
2
3.5"
2
-
3.5"
2
IMPELLER & WEARPLATE RENEWAL
When clearance
cutwater/wearplate exceeds 1/16" at face of impeller or
1/8" on outside diameter of impeller, it may be
necessary to take corrective action. Increased clearance
can cause lengthened priming times and reduced
pumping capacity. If both priming and capacity of your
unit are satisfactory
recommended that no corrective maintenance be
performed regardless of what clearances may have
developed, since increased clearances in themselves
are not generally dangerous to your pump. Normally,
new pump face clearances can be restored by simply
shimming behind the impeller. (Add impeller shims Ref.
No. 21). If diameter of impeller is badly worn or if 1/16"
shim washers do not restore clearances to less than
1/16" face dimension and/or 1/8" diametral clearance, it
is recommended that impeller be replaced. This is
usually all that is required since only on unusually
abrasive surfaces do cast iron wearplates show
deterioration.
GPM at Total Head in Feet
10' 20' 30' 40'
− −
8,580 1,320
17,880 14,940 12,000 7,800
- 21,360 19,080 16,620
1
3100-99
between impeller
for your application, it
50' 60' 70'
− − −
− −
2700
14,160 10,200 4,500
and
is
80'
−
−
2,100
07/2012