NVE 4307 Series User manual

National Vacuum Equipment
Owner’s Manual
&
Operating Instructions
Models 4307 & 4310 Blower
MADE
IN USA
Visit our web site to download pump setup guides,
brochures and other technical information.

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© 2011 National Vacuum Equipment, Inc.
October 2012 rev.
No part of this manual may be reproduced without the written permission of
National Vacuum Equipment, Inc.
4307 & 4310 Blowers
Owner’s Record
Date of Purchase: _________________________
Purchased from: __________________________
Serial Number: ____________________________

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Table of Contents
Introducon................................................................................................................. 5
About Naonal Vacuum Equipment, Inc............................................................... 5
Our History .............................................................................................................. 5
Limited Warranty ........................................................................................................ 6
Warranty.................................................................................................................. 6
Warranty Procedures.............................................................................................. 7
Overview...................................................................................................................... 8
General Blower Operaon ..................................................................................... 8
General Blower Construcon................................................................................. 8
Locaon of Serial Number ..................................................................................... 9
Specicaons............................................................................................................... 9
Operang Environment.......................................................................................... 9
Operang Limits...................................................................................................... 9
Performance (Reference Only) ............................................................................10
Dimensions............................................................................................................11
Air Flow Control ....................................................................................................11
Noise Level ............................................................................................................11
Limitaons on Use ................................................................................................12
Storage .......................................................................................................................13
Unpacking Blower.................................................................................................13
Handling ................................................................................................................13
Preservaon .......................................................................................................... 13
Installaon ................................................................................................................. 14
Rotaon and Airow ............................................................................................14
Diesel Engine Precauons.................................................................................... 14
Direct Coupling...................................................................................................... 15
Recommended Equipment............................................................................. 15
Installaon and Alignment..............................................................................15
Belt Drive............................................................................................................... 16
Drive Sha ............................................................................................................ 17
Hydraulic Drive ..................................................................................................... 17

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PTO Drive .............................................................................................................. 17
Plumbing and Piping............................................................................................18
Recommended Accessories ................................................................................18
Exhaust Silencer............................................................................................... 18
Tunable Ballast Silencer...................................................................................18
Inlet Filter .........................................................................................................18
Four Way Valve and Hoses..............................................................................19
Pressure Relief Valve........................................................................................19
Vacuum Relief Valve ........................................................................................19
Check Valves.....................................................................................................19
Primary Shuto................................................................................................19
Secondary Shuto/Moisture Trap ..................................................................20
Bag House ........................................................................................................20
Operaon................................................................................................................... 20
Inial Start Up ....................................................................................................... 20
Operang............................................................................................................... 21
Stopping the Blower .............................................................................................21
Cold Weather Operaon......................................................................................21
Maintenance .............................................................................................................22
MAINTENANCE SCHEDULE ..................................................................................22
Oil Capacies and Recommendaons ................................................................23
Rebuilding.............................................................................................................. 25
Cleanout Procedure If Flooded............................................................................25
4307 Parts Diagram ..............................................................................................26
4310 Parts Diagram ..............................................................................................27
4307 & 4310 Parts List ........................................................................................28
4307 4-Way Manifold Parts Diagram & Parts List...............................................30
4310 4-Way Manifold Parts Diagram & Parts List...............................................32
Troubleshoong ........................................................................................................34

4307 & 4310 Blower | 5www.natvac.com | 800.253.5500
Introduction
About National Vacuum Equipment, Inc.
Congratulaons! You now own a quality vacuum/pressure blower proudly manu-
factured in the U.S.A. by Naonal Vacuum Equipment, Inc. You have not only
acquired a superior piece of equipment from a qualied dealer, you have hired
a team of vacuum experts. We stand ready to work with your dealer to answer
your quesons and provide you with the informaon necessary to keep your
equipment in peak working condion. Thank you for using Naonal Vacuum
Equipment. OUR MISSION: We are dedicated to the manufacture and wholesale
distribuon of quality vacuum system products at a reasonable price, on a mely
basis. We are a “one-stop shop” for manufacturers and distributors of vacuum
equipment.
Our History
Naonal Vacuum Equipment, Inc. was founded in 1980 by Bruce Luoma. The
Company started as a retailer of vacuum pumps. Soon aer it started, the Com-
pany secured the rights to exclusive distribuon of the Baoni vacuum pumps
in North America. This helped the Company to evolve into its current status as
a wholesale supplier. To reach the goal of becoming a full service supplier of
vacuum system components, the Company began fabricang its own line of com-
ponents, purchased and developed its own line of vacuum pumps, and began
purchasing for resale various valves and accessories. Today, NVE has full service
machine and fabricaon shops complete with CNC-controlled producon equip-
ment designed for close tolerance work. The company has a highly trained sta
all of whom are dedicated to quality.

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Limited Warranty
Warranty
Naonal Vacuum Equipment, Inc. guarantees that the product it provides is
free of manufacturer’s defects, including materials and workmanship. Properly
installed and maintained product is warranted for a period of one (1) year
subject to the following condions:
1. A properly completed warranty registraon card must be received by
us within 30 days of sale to end user for pump sales to be considered
warrantable. All pumps received for warranty consideraon must
retain the original NVE serial number tag.
2. The one (1) year period shall begin the day the product is shipped
from our warehouse, unless we are provided with an authenc copy
of the original resale invoice, in which case the one (1) year period
shall begin at such invoice date.
3. The covered product must be used in an applicaon for which it was
intended. We do not recommend our product for parcular uses or
applicaons.
4. Damage caused by improper use or lack of proper maintenance is
not warrantable.
5. Manufacturer’s liability under this or any other warranty, whether
express or implied, is limited to repair of or, at the manufacturers’ op-
on, replacement of parts which are shown to have been defecve
when shipped.
6. Manufacturer’s liability shall not be enforceable for any product
unl Naonal Vacuum Equipment, Inc. has been paid in full for such
product.
7. Except to the extent expressly stated herein, manufacturer’s liability
for incidental and consequenal damage is hereby excluded to the
full extent permied by law.
8. Manufacturer’s liability as stated herein cannot be altered except in
wring signed by an ocer of Naonal Vacuum Equipment, Inc.
9. Certain products provided by Naonal Vacuum Equipment, Inc. are
covered by their respecve manufacturer’s warranes (e.g., engines
used in the NVE engine drive packages). These products are not
covered by the Naonal Vacuum Equipment, Inc. Manufacturer’s
Warranty.

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Warranty Procedures
Should a potenal warranty situaon arise, the following procedures must be
followed:
· Contact your dealer immediately upon the occurrence of the event
and within the warranty period.
· Customer must receive a return goods authorizaon (RGA) before
returning product.
· All serial-numbered products must retain the NVE serial number tag to
be qualied for warranty.
· Product must be returned to NVE intact for inspecon before
warranty will be honored.
· Product must be returned to NVE freight prepaid in the most
economical way.
· Credit will be issued for material found to be defecve upon our
inspecon, based upon prices at the me of purchase.

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Overview
General Blower Operation
The NVE BLOWERS are severe duty vacuum
pumps, designed to be used in liquid waste
pumping systems where extended operaon
is desired. The pump incorporates a ballast
air cooling system to provide superior cooling,
allowing for extended operaon.
The air enters the intake under vacuum or at
atmospheric pressure. As the rotors rotate, a xed volume of air is moved along
the wall of the cylinder towards the exhaust where the pressure and temperature
of the volume of air increases. If the intake air is below atmospheric pressure,
cooling air will be drawn in when the rotor p passes the ballast port.
The airow capacity of the machine (in ACFM) is nearly proporonal to the speed
of the machine and is nearly constant with changes in inlet or outlet pressures.
General Blower Construction
BALLAST INJECTION
BALLAST INJECTION
INTAKE
EXHAUST
BLOWER HOUSING
DRIVE ENDPLATE
NON-DRIVE ENDPLATE
DRIVE OIL
TANK
DRIVE ROTOR
IDLER ROTOR
DRIVE BEARINGS NON-DRIVE BEARINGS
OIL SLINGER
OIL SLINGER
TIMING GEARS
SEAL SLEEVE
SEAL RINGS
SEAL VENT

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Sereial Number
Location of Serial Number
Each blower should have a brass colored tag with an embossed serial number. In
addion, the serial number and blower direcon as assembled at the factory are
stamped into the top of the housing as shown:
Specifications
Operating Environment
The 4307 and 4310 blowers are
designed to move atmospheric
air. Do not use to move explosive
or corrosive gasses or operate the
blower in an area with explosive
gases. Any materials in the intake
air must be ltered and separated from the air by means of an intake lter, mois-
ture trap and/or a cyclonic lter.
The ballast inlet must be posioned and protected from ingesng debris, uid or
explosive gases.
Operating Limits
The blower must be operated within all limits at all mes. This typically means
the blower performance is limited by the exhaust temperature and temperature
rise over ambient for the blower.
*Exhaust temp and temp rise limited, †Pressure rise is from inlet to outlet, ‡Temperature rise is
exhaust minus ambient temperature surrounding blower (note if enclosed)
InletVac
Pressure
Rise†
(psig)
Exhuast
Pressure
(psig)
Inlet
Temp
(°F)
Exhuast
Temp
(°F)
Temp.
Rise‡
(°F)
BallastInlet
Temp
(°F)
Max Min Max Max Max  Max Max 
4307 4000 900 FULLVAC 14 10 * 380 235 *
4310 4500 900 FULLVAC 14 10 * 380 260 *
RPM
Size

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Performance (Reference Only)
ACFM - Actual CFM generated on the vacuum or pressure side of the machine
B.O. - Blanked O
PRESSURE
PSI
0 9 15 18 21 24 27 10
HP 2.0 7.4 11.0 12.8 14.6 16.4  14.2
ACFM 280 171 114 77 26   143
HP 2.5 9.2 13.7 16.0 18.2 20.5  17.7
ACFM 349 241 184 147 96 17  213
HP 3.0 11.1 16.5 19.2 21.9 24.6 27.3 21.3
ACFM 419 311 254 217 166 87  283
HP 3.5 12.9 19.2 22.4 25.5 28.7 31.8 24.8
ACFM 489 381 324 286 236 157  353
HP 4.0 14.8 22.0 25.6 29.2 32.8 36.4 28.4
ACFM 559 451 394 356 306 227 57 423
PRESSURE
PSI
0 9 15 18 21 24 27 10
HP 2.0 9.9 15.2 17.8 20.4 23.1  19.9
ACFM 409 293 268 252 207 61  221
HP 2.5 12.4 19.0 22.2 25.5 28.8  24.8
ACFM 512 395 371 354 309 164  324
HP 3.0 14.8 22.7 26.7 30.6 346.0  29.8
ACFM 614 498 473 456 412 266  426
HP 3.5 17.3 26.5 31.1 35.7 40.3  34.8
ACFM 716 600 575 559 514 369  528
HP 4.0 19.8 30.3 35.6 40.8 46.1 51.4 39.7
ACFM 918 702 678 661 616 471 B.O. 631
HP 4.5 22.3 34.1 40.0 46.0 51.9 57.8 44.7
ACFM 921 805 780 763 719 573 129 733
VACUUMINCHESOFMERCURY
RPM
4307 VACUUMINCHESOFMERCURY
RPM
2000
2500
3000
4500
3500
4000
4310
2000
2500
3000
3500
4000